WO2021107704A1 - Wireless charging system and electric vehicle including same - Google Patents

Wireless charging system and electric vehicle including same Download PDF

Info

Publication number
WO2021107704A1
WO2021107704A1 PCT/KR2020/017144 KR2020017144W WO2021107704A1 WO 2021107704 A1 WO2021107704 A1 WO 2021107704A1 KR 2020017144 W KR2020017144 W KR 2020017144W WO 2021107704 A1 WO2021107704 A1 WO 2021107704A1
Authority
WO
WIPO (PCT)
Prior art keywords
wireless charging
power
electric vehicle
control unit
unit
Prior art date
Application number
PCT/KR2020/017144
Other languages
French (fr)
Korean (ko)
Inventor
김태경
최종학
김나영
이승환
Original Assignee
에스케이씨 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 에스케이씨 주식회사 filed Critical 에스케이씨 주식회사
Publication of WO2021107704A1 publication Critical patent/WO2021107704A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/302—Cooling of charging equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/22—Standstill, e.g. zero speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/03—Lubrication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the present invention relates to a wireless charging system and an electric vehicle including the same.
  • the wireless power transmission wirelessly transmits power through space using an electromagnetic field resonance structure such as magnetic coupling, capacitive coupling, or an antenna without physical contact between a transmitter that supplies power and a receiver that receives power.
  • the wireless power transmission is suitable for portable communication devices and electric vehicles that require a large-capacity battery, and since the contacts are not exposed, there is little risk of a short circuit, and a wired charging failure phenomenon can be prevented.
  • the problem to be solved by the present invention is to cut off the power of the driving unit of the electric vehicle while wireless charging of the electric vehicle battery is performed, and to operate the cooling unit through electric vehicle internal power other than wireless charging power to dissipate heat from the wireless charging pad and the like may be included in the problems to be solved by the present invention.
  • a wireless charging system includes a wireless charging pad for charging a battery of an electric vehicle by receiving first power wirelessly from an external transmitter, a temperature controller for monitoring the temperature of the wireless charging pad, and the temperature controller.
  • a cooling unit for dissipating heat to the wireless charging pad under control, and a power control unit for supplying second power to the temperature control unit while the battery of the electric vehicle is being charged in a state in which the electric vehicle is turned off,
  • the power control unit may supply the second power to the temperature control unit and at the same time cut off the power of the driving unit for driving the electric vehicle.
  • the second power may be lower than the first power.
  • the second power may include battery power of the electric vehicle.
  • the second power may be supplied from an external power supply outside the electric vehicle.
  • the temperature controller may control the cooling unit to radiate heat to the wireless charging pad.
  • the state in which the engine of the electric vehicle is turned off may include a state in which an engine of the electric vehicle is stopped or a state in which the electric vehicle is stopped.
  • the wireless charging pad includes a coil including a conductive wire, a magnetic material disposed on one surface of the coil, and a metal plate formed to be spaced apart from the magnetic material, and the cooling unit is located on the magnetic material or the metal plate. They may be arranged adjacent to each other.
  • the cooling unit may include at least one of an air circulation unit, a micro-channel, a thermal conductive unit, and a cooling fan.
  • the cooling unit circulates air or cooling water to the wireless charging pad through at least one of the air circulation unit, the micro-channel, the thermal conductive unit, and the cooling fan based on the control of the temperature control unit to dissipate the heat of the wireless charging pad.
  • An electric vehicle includes a power supply unit for supplying power to an engine of the electric vehicle from a battery, a wireless charging pad for charging the battery of the electric vehicle by receiving first power wirelessly from an external transmitter, and the wireless charging A temperature control unit for monitoring the temperature of the pad, a cooling unit for dissipating heat to the wireless charging pad under the control of the temperature control unit, and the electric vehicle while the battery of the electric vehicle is being charged in a state in which the electric vehicle is turned off and a power control unit supplying second power inside the vehicle to the temperature control unit, wherein the power control unit supplies the second power to the temperature control unit and at the same time cuts off the power of the driving unit for driving the electric vehicle .
  • the temperature control unit may be supplied with a second power inside the electric vehicle capable of operating a cooling unit different from the first power for wireless charging, the temperature control unit is 2
  • the heat generated in the wireless charging pad can be effectively dissipated by lowering the temperature of the magnetic material or metal plate of the wireless charging pad through the circulation of air or cooling water.
  • the power control unit for supplying the second power inside the electric vehicle to the temperature control unit cuts off the power of the driving unit of the electric vehicle and supplies the second power to the temperature control unit, so that only the temperature control unit operates independently.
  • FIG. 1 is a view for explaining a wireless charging system according to an embodiment.
  • FIG. 2 is an exemplary flowchart of a procedure of a wireless charging method according to an embodiment.
  • FIG 3 is a view for explaining a wireless charging system according to another embodiment.
  • FIG. 4 is a view for explaining a cooling unit including an air circulation unit according to an embodiment.
  • FIG. 5 is a view for explaining a cooling unit including a microchannel according to an embodiment.
  • FIG. 6 is a view for explaining a cooling unit including a thermally conductive unit according to an embodiment.
  • FIG. 7 is a view for explaining a cooling unit including a cooling fan according to an embodiment.
  • the wireless charging system 100 may include a wireless charging pad 110 , a temperature control unit 120 , a cooling unit 130 , and a power control unit 140 .
  • the wireless charging system 100 of FIG. 1 is only an embodiment of the present invention, the spirit of the present invention is not interpreted as being limited by FIG. 1 .
  • the wireless charging system 100 may not include at least one of the components shown in FIG. 1 or may additionally include a configuration not shown in FIG. 1 .
  • each of the components included in the wireless charging system 100 may be implemented in the form of a software module or a hardware module, or a combination of a software module and a hardware module.
  • the wireless charging pad 110 may receive first power wirelessly from the external transmitter 160 to charge the battery of the electric vehicle 1 .
  • the wireless charging pad 110 may include a coil including a conductive wire, a magnetic material disposed on one surface of the coil, and a metal plate formed to be spaced apart from the magnetic material.
  • the temperature controller 120 may monitor the temperature of the wireless charging pad 110 .
  • the temperature control unit 120 may control the cooling unit 130 to be described later according to the temperature of the wireless charging pad 110 .
  • the temperature control unit 120 may control the cooling unit 130 to dissipate heat from the wireless charging pad 110 .
  • the temperature control unit 120 may use a cooling facility basically provided in the electric vehicle.
  • the temperature control unit 120 may include an automobile air conditioner, but is not limited thereto.
  • the cooling unit 130 may perform heat dissipation to the wireless charging pad 100 under the control of the temperature control unit 120 . At this time, the cooling unit 130 may be connected to the temperature control unit 120 and the wire 50, but is not limited thereto.
  • the cooling unit 130 may be provided to be adjacent to the magnetic material or metal plate of the wireless charging pad 110 , and the cooling unit 130 is at least one of an air circulation unit, a micro-channel, a thermal conductive unit, and a cooling fan. It may include one or more, but is not limited thereto.
  • the cooling unit 130 includes an air circulation unit
  • air is supplied to the air circulation unit from the temperature control unit 120 , and the air introduced into the air circulation unit is circulated to the wireless charging pad 110 while circulating the wireless charging pad.
  • the heat dissipation of (110) can be performed.
  • cooling unit 130 When the cooling unit 130 includes a micro-channel, cooling water is supplied to the micro-channel from the temperature control unit 120, and the cooling water introduced into the micro-channel is circulated to the wireless charging pad 110 while the wireless charging pad 110 is cooled. heat dissipation can be performed.
  • cooling unit 130 includes a cooling fan
  • gaseous cooling is supplied to the cooling fan from the temperature controller 120 , and the gaseous cooling introduced into the cooling fan is circulated to the wireless charging pad 110 , and wirelessly Heat dissipation of the charging pad 110 may be performed.
  • the thermally conductive part may include a thermally conductive sheet, and may perform heat dissipation of the wireless charging pad 110 through the thermally conductive part.
  • the power control unit 140 may supply the second power inside the electric vehicle 1 to the temperature control unit 120 while the battery of the electric vehicle 1 is being charged in a state in which the engine of the electric vehicle 1 is turned off.
  • the second power inside the electric vehicle 1 may include battery power of the electric vehicle 1, but is not limited thereto.
  • the power control unit 140 may supply the second power to the temperature control unit 120 and at the same time cut off the power of the driving unit (not shown) for driving the electric vehicle.
  • the driving unit means at least one or more devices operated to drive the electric vehicle.
  • the power control unit 140 supplies the second power to the temperature control unit 120 and at the same time cuts off the power of the driving unit (not shown) of the electric vehicle 1, so that the temperature control unit (not shown) except for the driving unit (not shown) 120) can be operated independently.
  • the power control unit 140 may supply second power to the temperature control unit 120 after shutting off the power of the driving unit (not shown) of the electric vehicle 1 .
  • the second power of the power controller 140 may be lower than the first power used to charge the battery of the electric vehicle 1 supplied from the external transmitter 160 to the wireless charging pad 110 .
  • the state in which the start of the electric vehicle 1 is turned off may include a state in which the engine of the electric vehicle is stopped or a state in which the electric vehicle is stopped, but this is only an embodiment and is not limited thereto.
  • FIG. 2 is an exemplary flowchart of a procedure of a wireless charging method according to an embodiment.
  • the wireless charging method shown in FIG. 2 can be performed by the wireless charging system 100 shown in FIG. 1 .
  • the wireless charging method shown in FIG. 2 is merely exemplary.
  • a user may attempt wireless charging while the engine of the electric vehicle is stopped or the electric vehicle is stopped (step S10 ).
  • the user may proceed with wireless charging in a state in which the engine is turned off (the engine may be stopped) after the electric vehicle stops in the wireless charging zone.
  • the wireless charging pad 110 of the electric vehicle may receive the first power wirelessly from the external transmitter 160 to charge the battery of the electric vehicle 1 (step S20 ).
  • the power control unit 140 controls the second power inside the electric vehicle 1 to temperature may be supplied to the control unit 120 , and in this case, the power control unit 140 may cut off the power of the driving unit (not shown) of the electric vehicle 1 (step S30 ).
  • the power control unit 140 may supply the second power to the temperature control unit 120 and then cut off the power of the driving unit (not shown), and after cutting off the power of the driving unit (not shown), the temperature control unit ( It is also possible to supply a second power to 120).
  • the cooling unit 130 may perform heat dissipation to the wireless charging pad 110 under the control of the temperature control unit 120 (step S40).
  • the heat generated in the magnetic material may change the magnetic properties of the magnetic material. Not only that, it could also cause the destruction of the magnetic material by thermal shock.
  • the power control unit 140 since the power control unit 140 supplies the second power of the electric vehicle 1 to the temperature control unit 120 , the operation of the temperature control unit 120 is not affected. As the cooling unit 130 performs heat dissipation of the wireless charging pad 110 , it is possible to solve the problem that heat is generated in the wireless charging pad 110 .
  • the power control unit 140 supplies the second power to the temperature control unit 120 and at the same time cuts off the power of the driving unit (not shown) of the electric vehicle 1, so that a malfunction does not occur in the driving unit (not shown), , only the temperature control unit 120 may be driven independently.
  • the wireless charging system 100 includes a wireless charging pad 110 , a temperature control unit 120 , a cooling unit 130 , an external power supply unit 145 and a control unit 150 .
  • a wireless charging pad 110 includes a wireless charging pad 110 , a temperature control unit 120 , a cooling unit 130 , an external power supply unit 145 and a control unit 150 .
  • the description of the wireless charging pad 110 , the temperature controller 120 , and the cooling unit 130 is the same as that described above, and thus a description thereof will be omitted.
  • the external power supply unit 145 is a device capable of supplying second power.
  • the second power of the external power supply unit 145 may be lower than the first power used to charge the battery of the electric vehicle 1 supplied from the external transmitter 160 to the wireless charging pad 110 .
  • the second power of the external power supply 145 may be lower than the first power used to charge the battery of the electric vehicle 1 supplied from the external transmitter 160 .
  • the external power supply unit 145 and the temperature control unit 120 may be connected by wire 70 or wirelessly.
  • the external power supply 145 and the temperature controller 120 are connected by a wire 70
  • the The second power may be supplied to the temperature control unit 120 according to the control of the control unit 150 while the set portion and the control unit 150 to be described later are connected, but is not limited thereto.
  • the external power supply 145 and the temperature controller 120 are connected by a wire 70
  • the user connects the wire 70 to a preset part of the electric vehicle 1
  • the The preset portion and the temperature control unit 120 may be directly connected to supply the second power to the temperature control unit 120 .
  • the temperature control unit 120 may receive the second power wirelessly from the external power supply unit 145, but is not limited thereto.
  • the control unit 150 may control the second power of the external power supply unit 145 to be supplied to the temperature control unit 120 while the battery of the electric vehicle 1 is being charged in a state in which the engine of the electric vehicle 1 is turned off. .
  • the state in which the start of the electric vehicle 1 is turned off may include a state in which the engine of the electric vehicle is stopped or a state in which the electric vehicle is stopped, but this is only an embodiment and is not limited thereto.
  • cooling unit 4 is a view for explaining a case in which the cooling unit includes an air circulation unit according to an embodiment.
  • the cooling unit 130 may include an air circulation unit 300 .
  • the air circulation unit 300 of the cooling unit 130 may be provided with an air circulation unit 300 instead of an empty space or a spacer unit between the magnetic material 180 and the metal plate 170 of the wireless charging pad 110 .
  • the air flowing into the air circulation unit 300 may be supplied from the temperature control unit 120 .
  • the wireless charging pad 110 includes an air circulation unit 300 that can circulate air supplied from the temperature control unit 120 in direct contact with the surface of the magnetic material 180 . , It is possible to improve the charging efficiency by 0.1% or more, specifically 0.2% to 10%, more specifically 0.5% to 5% compared to the wireless charging pad 110 that does not include the air circulation unit 300 . In addition, it is possible to prevent mechanical damage that may occur in adjacent circuits due to heat generated from the magnetic material 180 and the coil 190 .
  • the cooling unit 130 includes the air circulation unit 300
  • the air supplied from the temperature control unit 120 can circulate in direct contact with the surface of the magnetic material 180 of the wireless charging pad 110. Therefore, it is possible to improve the charging efficiency and improve the heat dissipation characteristics, and it is possible to minimize the deterioration of the magnetic material due to moisture.
  • FIG. 5 is a diagram for explaining a case in which a cooling unit includes a microchannel according to an exemplary embodiment.
  • the cooling unit 130 may include a microchannel 400 .
  • the microchannel 400 of the cooling unit 130 is at least one of the adjacent portion of the magnetic material 180 of the wireless charging pad 110 , the metal plate 170 , and between the magnetic material 180 and the coil 190 . It may be provided in the portion, but is not limited thereto. Meanwhile, when the microchannel 400 is provided between the magnetic material 180 and the coil 190 , heat generated from the magnetic material 180 and the coil 190 can be simultaneously processed.
  • the micro-channel 400 of the cooling unit 130 may further include a cooling fluid that circulates and flows through the micro-channel 400 .
  • the fluid may transfer heat generated from the magnetic material 180 to the outside.
  • the fluid may transfer heat generated from the magnetic material 180 to the cooler.
  • Such a fluid may be gas or liquid, for example, air, water, or other liquid or gaseous fluid used as a refrigerant.
  • the fluid may be air, water, oil (eg, engine oil), alcohol (eg, ethylene glycol, propylene glycol, antifreeze), or a mixture thereof, but is not limited thereto.
  • the temperature controller 120 may adopt a method and structure for effectively cooling the fluid.
  • the temperature control unit 120 may cool the fluid inside the microchannel 400 of the cooling unit 130 by air cooling or water cooling.
  • the temperature control unit 120 may be connected to the microchannel 400 of the cooling unit 130 while having a sealed structure for waterproofing and dustproofing. Furthermore, the cooling unit 130 may be connected to the temperature controller 120 through a connection passage at the inlet and the outlet of the microchannel 400 , but is not limited thereto.
  • the cooling unit 130 includes the microchannel 400
  • the microchannel 400 of the cooling unit 130 is located inside the magnetic material 180 or adjacent to the magnetic material 180 . ) to easily dissipate the heat generated in the wireless charging pad 110 through the refrigerant.
  • the air conditioner when the temperature controller 120 includes an air conditioner provided inside the electric vehicle, the air conditioner may be connected to a connection passage connected to the micro-channel inlet and outlet of the cooling unit 130 and the air conditioner is not limited thereto. no.
  • FIG. 6 is a view for explaining a case in which a cooling unit includes a thermally conductive unit according to an exemplary embodiment.
  • the cooling unit 130 may include a thermally conductive unit 500 .
  • the thermally conductive part 500 of the cooling part 130 may be provided inside the magnetic material 180 .
  • the thermally conductive portion of the cooling unit 130 may include a mesh sheet having a network structure, a ribbon sheet, or a thermally conductive sheet including a plurality of holes.
  • the cooling unit 130 is a mesh sheet, a ribbon sheet or a plurality of holes having a mesh structure, which is an open structure so that a magnetic field can travel inside the magnetic material 180 used in the wireless charging pad 110 .
  • the thermally conductive part 500 including the thermally conductive sheet heat generated in the magnetic material 180 can be easily dissipated, and the battery charging efficiency of the electric vehicle 1 can be further improved.
  • the cooling unit includes a cooling fan according to an exemplary embodiment.
  • the cooling unit 130 may include a cooling fan 600 .
  • the cooling fan 600 of the cooling unit 130 may be provided on the rear surface of the metal plate 170 of the wireless charging pad 110 or adjacent to the magnetic material 180 . More specifically, the cooling fan 600 of the cooling unit 130 may circulate the heat generated in the magnetic material of the wireless charging pad 110 by cooling the gaseous state introduced from the temperature control unit 120 , the cooling fan The air flowing into the 600 may be supplied from the temperature controller 120 .
  • the wireless charging pad 110 is a cooling fan 600 that operates so that the cooling of the gaseous state supplied from the temperature controller 120 can circulate in direct contact with the surface of the magnetic material 180 . ) by including, the charging efficiency can be improved compared to the wireless charging pad 110 that does not include the cooling fan 600 . In addition, it is possible to prevent mechanical damage that may occur in adjacent circuits due to heat generated from the magnetic material 180 and the coil 190 .
  • the cooling unit 130 includes the cooling fan 600
  • the cooling of the gaseous state supplied from the temperature control unit 120 is in direct contact with the surface of the magnetic material 180 of the wireless charging pad 110 and circulates. Therefore, the charging efficiency may be improved and the heat dissipation characteristics may be improved, and the deterioration of the magnetic material 180 due to moisture may be minimized.
  • the temperature control unit may receive second power inside the electric vehicle capable of operating a cooling unit different from the first power for wireless charging. Therefore, the temperature control unit receives the second power and operates the cooling unit, thereby lowering the temperature of the magnetic material or metal plate of the wireless charging pad through the circulation of air or cooling water, thereby effectively dissipating the heat generated in the wireless charging pad.
  • the power control unit that supplies the second power inside the electric vehicle to the temperature control unit cuts off the power of the driving unit of the electric vehicle and supplies the second power to the temperature control unit, so that only the temperature control unit operates independently.
  • the method according to this embodiment can be implemented in the form of a computer program stored in a computer-readable recording medium programmed to perform each step of the method, and also includes a computer program programmed to perform each step of the method. It can be implemented in the form of a computer-readable recording medium for storing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

A wireless charging system according to one embodiment comprises: a wireless charging pad that charges a battery of an electric vehicle by wirelessly receiving first power from an external transmitter; a temperature control unit that monitors the temperature of the wireless charging pad; a cooling unit that radiates heat to the wireless charging pad under control of the temperature control unit; and a power control unit that supplies second power to the temperature control unit while the battery of the electric vehicle is being charged while the electric vehicle is turned off, wherein the power control unit may supply the second power to the temperature control unit while simultaneously cutting off a power supply to a driving unit for driving the electric vehicle.

Description

무선충전 시스템 및 이를 포함하는 전기 자동차Wireless charging system and electric vehicle including same
본 발명은 무선충전 시스템 및 이를 포함하는 전기 자동차에 관한 것이다.The present invention relates to a wireless charging system and an electric vehicle including the same.
오늘날 정보통신 분야는 매우 빠른 속도로 발전하고 있으며, 전기, 전자, 통신, 반도체 등이 종합적으로 조합된 다양한 기술들이 지속적으로 개발되고 있다. 또한, 전자기기의 모바일화 경향이 증대함에 따라 통신분야에서도 무선 통신 및 무선 전력 전송 기술에 대한 연구가 활발히 진행되고 있다. 특히, 전자기기 등에 무선으로 전력을 전송하는 방안에 관한 연구가 활발히 진행되고 있다.Today, the information and communication field is developing at a very fast pace, and various technologies that comprehensively combine electricity, electronics, communication, and semiconductor are continuously being developed. In addition, as electronic devices become more mobile, research on wireless communication and wireless power transmission technology is actively conducted in the communication field. In particular, research on a method of wirelessly transmitting power to an electronic device or the like is being actively conducted.
상기 무선 전력 전송은 전력을 공급하는 송신기와 전력을 공급받는 수신기 간에 물리적인 접촉 없이 자기 결합(inductive coupling), 용량 결합(capacitive coupling) 또는 안테나 등의 전자기장 공진 구조를 이용하여 공간을 통해 전력을 무선으로 전송하는 것이다. 상기 무선 전력 전송은 대용량의 배터리가 요구되는 휴대용 통신기기, 전기 자동차 등에 적합하며 접점이 노출되지 않아 누전 등의 위험이 거의 없으며 유선 방식의 충전 불량 현상을 막을 수 있다.The wireless power transmission wirelessly transmits power through space using an electromagnetic field resonance structure such as magnetic coupling, capacitive coupling, or an antenna without physical contact between a transmitter that supplies power and a receiver that receives power. will be sent to The wireless power transmission is suitable for portable communication devices and electric vehicles that require a large-capacity battery, and since the contacts are not exposed, there is little risk of a short circuit, and a wired charging failure phenomenon can be prevented.
또한, 최근 들어 전기 자동차에 대한 관심이 급증하면서 충전 인프라 구축에 대한 관심이 증대되고 있으며, 이미 가정용 충전기를 이용한 전기 자동차 충전을 비롯하여 배터리 교체, 급속 충전 장치, 무선충전 장치 등 다양한 충전 방식이 등장하였고, 새로운 충전 사업 비즈니스 모델도 나타나기 시작했다. 아울러, 유럽에서는 시험 운행중인 전기차와 충전소가 눈에 띄기 시작했고, 일본에서는 자동차 제조 업체와 전력 회사들이 주도하여 전기 자동차 및 충전소를 시범적으로 운영하고 있다.In addition, with the recent surge in interest in electric vehicles, interest in building charging infrastructure is increasing, and various charging methods such as electric vehicle charging using home chargers, battery replacement, fast charging devices, and wireless charging devices have already appeared. , new charging business business models are also beginning to appear. In addition, electric vehicles and charging stations under test operation are starting to stand out in Europe, and in Japan, car manufacturers and electric power companies are piloting electric vehicles and charging stations.
한편, 전기 자동차의 무선충전 동작 시에는, 무선으로 전력을 공급 받아 전기 자동차의 배터리를 충전하는 무선충전 패드의 코일과 자성소재에 열이 발생되게 되는데, 특히 자성소재에서 발생된 열은 자성소재의 자기적 특성을 변화시킬 뿐만 아니라 열충격에 의해 자성소재의 파괴를 발생시킬 수도 있었다.On the other hand, during the wireless charging operation of the electric vehicle, heat is generated in the coil and magnetic material of the wireless charging pad that receives power wirelessly and charges the battery of the electric vehicle. In addition to changing the magnetic properties, it could also cause the destruction of the magnetic material by thermal shock.
따라서, 무선충전 패드의 코일 및 자성소재를 방열시키기 위한 장치(예컨대, 냉각팬 등을 포함)를 작동시켜야 하지만, 전기 자동차의 무선충전은 대부분 시동을 정지한 상태(엔진을 정지한 상태)로 무선충전 구역에 정차되어 무선충전을 수행하기 때문에, 방열 장치를 작동시킬 전력을 공급 받지 못해 무선충전 패드의 코일 및 자성소재의 열을 방출하는데 어려움이 발생하였다.Therefore, it is necessary to operate a device (eg, including a cooling fan) for dissipating the coil and magnetic material of the wireless charging pad, but most of the wireless charging of electric vehicles is wirelessly charged with the engine stopped in a state where the engine is stopped. Since it is stopped in the charging area to perform wireless charging, it is difficult to dissipate the heat of the coil and magnetic material of the wireless charging pad because it does not receive power to operate the heat dissipation device.
이에 대하여, 전기 자동차의 무선충전 동작 중, 무선충전 패드의 열을 방열할 수 있는 기술을 필요로 하고 있다.In contrast, there is a need for a technology capable of dissipating the heat of the wireless charging pad during the wireless charging operation of the electric vehicle.
(선행기술문헌)(Prior art literature)
한국공개특허공보, 제2011-0042403호 (2011.04.27. 공개) Korean Patent Laid-Open Publication No. 2011-0042403 (published on April 27, 2011)
본 발명의 해결하고자 하는 과제는, 전기 자동차 배터리의 무선 충전을 수행하는 동안 전기 자동차의 구동부 전원은 차단하고, 무선 충전 전력 이외의 전기 자동차 내부 전력을 통해 냉각부를 작동시켜 무선충전 패드를 방열시키는 것 등이 본 발명의 해결하고자 하는 과제에 포함될 수 있다.The problem to be solved by the present invention is to cut off the power of the driving unit of the electric vehicle while wireless charging of the electric vehicle battery is performed, and to operate the cooling unit through electric vehicle internal power other than wireless charging power to dissipate heat from the wireless charging pad and the like may be included in the problems to be solved by the present invention.
다만, 본 발명의 해결하고자 하는 과제는 이상에서 언급한 것으로 제한되지 않으며, 언급되지 않은 또 다른 해결하고자 하는 과제는 아래의 기재로부터 본 발명이 속하는 통상의 지식을 가진 자에게 명확하게 이해될 수 있을 것이다.However, the problems to be solved of the present invention are not limited to those mentioned above, and other problems to be solved that are not mentioned can be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be.
일 실시예에 따른 무선 충전 시스템은, 외부 송신기로부터 무선으로 제 1 전력을 공급 받아 전기 자동차의 배터리를 충전하는 무선충전 패드와, 상기 무선충전 패드의 온도를 모니터링 하는 온도 제어부와, 상기 온도 제어부의 제어를 받아 상기 무선충전 패드에 방열을 수행하는 냉각부와, 상기 전기 자동차의 시동이 꺼진 상태에서 상기 전기 자동차의 배터리가 충전되는 동안 제 2 전력을 상기 온도 제어부에 공급하는 전력 제어부를 포함하고, 상기 전력 제어부는, 상기 온도 제어부에 상기 제 2 전력을 공급하는 동시에 상기 전기 자동차를 구동시키기 위한 구동부의 전원을 차단할 수 있다.A wireless charging system according to an embodiment includes a wireless charging pad for charging a battery of an electric vehicle by receiving first power wirelessly from an external transmitter, a temperature controller for monitoring the temperature of the wireless charging pad, and the temperature controller. A cooling unit for dissipating heat to the wireless charging pad under control, and a power control unit for supplying second power to the temperature control unit while the battery of the electric vehicle is being charged in a state in which the electric vehicle is turned off, The power control unit may supply the second power to the temperature control unit and at the same time cut off the power of the driving unit for driving the electric vehicle.
또한, 상기 제 2 전력은, 상기 제 1 전력보다 낮은 전력일 수 있다.Also, the second power may be lower than the first power.
또한, 상기 제 2 전력은, 상기 전기 자동차의 배터리 전력을 포함할 수 있다.Also, the second power may include battery power of the electric vehicle.
또한, 상기 제 2 전력은 상기 전기 자동차의 외부에 있는 외부 전력 공급부로부터 공급될 수 있다.In addition, the second power may be supplied from an external power supply outside the electric vehicle.
또한, 상기 온도 제어부는, 상기 무선충전 패드의 온도가 기 설정된 온도 이상일 경우, 상기 무선충전 패드에 방열을 수행하도록 상기 냉각부를 제어할 수 있다.In addition, when the temperature of the wireless charging pad is greater than or equal to a preset temperature, the temperature controller may control the cooling unit to radiate heat to the wireless charging pad.
또한, 상기 전기 자동차의 시동이 꺼진 상태는, 상기 전기 자동차의 엔진이 정지한 상태 또는 상기 전기 자동차가 정차한 상태를 포함할 수 있다.Also, the state in which the engine of the electric vehicle is turned off may include a state in which an engine of the electric vehicle is stopped or a state in which the electric vehicle is stopped.
또한, 상기 무선충전 패드는, 전도성 와이어를 포함하는 코일과, 상기 코일의 일면 상에 배치된 자성 소재와, 상기 자성 소재와 이격되어 형성된 금속판을 포함하고, 상기 냉각부는 상기 자성 소재 또는 상기 금속판에 인접하도록 배치될 수 있다.In addition, the wireless charging pad includes a coil including a conductive wire, a magnetic material disposed on one surface of the coil, and a metal plate formed to be spaced apart from the magnetic material, and the cooling unit is located on the magnetic material or the metal plate. They may be arranged adjacent to each other.
또한, 상기 냉각부는, 공기 순환부, 미세유로, 열전도성부 및 냉각팬 중 적어도 하나 이상을 포함할 수 있다.In addition, the cooling unit may include at least one of an air circulation unit, a micro-channel, a thermal conductive unit, and a cooling fan.
또한, 상기 냉각부는, 상기 온도 제어부의 제어에 기초하여 상기 공기 순환부, 미세유로, 열전도성부 및 냉각팬 중 적어도 하나를 통해 공기 또는 냉각수를 상기 무선충전 패드에 순환시켜 상기 무선충전 패드의 방열을 수행할 수 있다.In addition, the cooling unit circulates air or cooling water to the wireless charging pad through at least one of the air circulation unit, the micro-channel, the thermal conductive unit, and the cooling fan based on the control of the temperature control unit to dissipate the heat of the wireless charging pad. can be done
일 실시예에 따른 전기 자동차는, 배터리로부터 전기 자동차의 엔진에 전력을 공급하는 전력 공급부와, 외부 송신기로부터 무선으로 제 1 전력을 공급 받아 전기 자동차의 배터리를 충전하는 무선충전 패드와, 상기 무선충전 패드의 온도를 모니터링 하는 온도 제어부와, 상기 온도 제어부의 제어를 받아 상기 무선충전 패드에 방열을 수행하는 냉각부와, 상기 전기 자동차의 시동이 꺼진 상태에서 상기 전기 자동차의 배터리가 충전되는 동안 상기 전기 자동차 내부의 제 2 전력을 상기 온도 제어부에 공급하는 전력 제어부를 포함하고, 상기 전력 제어부는, 상기 온도 제어부에 상기 제 2 전력을 공급하는 동시에 상기 전기 자동차를 구동시키기 위한 구동부의 전원을 차단할 수 있다.An electric vehicle according to an embodiment includes a power supply unit for supplying power to an engine of the electric vehicle from a battery, a wireless charging pad for charging the battery of the electric vehicle by receiving first power wirelessly from an external transmitter, and the wireless charging A temperature control unit for monitoring the temperature of the pad, a cooling unit for dissipating heat to the wireless charging pad under the control of the temperature control unit, and the electric vehicle while the battery of the electric vehicle is being charged in a state in which the electric vehicle is turned off and a power control unit supplying second power inside the vehicle to the temperature control unit, wherein the power control unit supplies the second power to the temperature control unit and at the same time cuts off the power of the driving unit for driving the electric vehicle .
일 실시예에 따르면, 전기 자동차등의 무선 충전 수행 동안, 온도 제어부는 무선 충전을 위한 제 1 전력과 상이한 냉각부를 동작시킬 수 있는 전기 자동차 내부의 제 2 전력을 공급받을 수 있기 때문에 온도 제어부가 제 2 전력을 공급 받아 냉각부를 동작 시킴으로써 공기 또는 냉각수의 순환을 통해 무선충전 패드의 자성소재 또는 금속판의 온도를 낮추어 무선충전 패드에 발생하는 열을 효과적으로 방출할 수 있다.According to an embodiment, during wireless charging of an electric vehicle, etc., since the temperature control unit may be supplied with a second power inside the electric vehicle capable of operating a cooling unit different from the first power for wireless charging, the temperature control unit is 2 By receiving power and operating the cooling unit, the heat generated in the wireless charging pad can be effectively dissipated by lowering the temperature of the magnetic material or metal plate of the wireless charging pad through the circulation of air or cooling water.
또한, 온도 제어부에 전기 자동차 내부의 제 2 전력을 공급하는 전력 제어부는, 전기 자동차의 구동부의 전원은 차단시키고, 온도 제어부에 제 2 전력을 공급함으로써, 온도 제어부만 독립적으로 작동하도록 할 수 있다. In addition, the power control unit for supplying the second power inside the electric vehicle to the temperature control unit cuts off the power of the driving unit of the electric vehicle and supplies the second power to the temperature control unit, so that only the temperature control unit operates independently.
또한, 전기 자동차의 무선 충전 수행 동안, 전기 자동차의 구동부의 전원은 차단되기 때문에 안전성이 증가될 수 있다.In addition, since the power of the driving unit of the electric vehicle is cut off during wireless charging of the electric vehicle, safety may be increased.
도 1은 일 실시예에 따른 무선충전 시스템을 설명하기 위한 도면이다.1 is a view for explaining a wireless charging system according to an embodiment.
도 2는 일 실시예에 따른 무선충전 방법의 절차에 대한 예시적인 순서도이다.2 is an exemplary flowchart of a procedure of a wireless charging method according to an embodiment.
도 3은 또 다른 실시예에 따른 무선충전 시스템을 설명하기 위한 도면이다.3 is a view for explaining a wireless charging system according to another embodiment.
도 4는 일 실시예에 따른 공기순환부를 포함하는 냉각부를 설명하기 위한 도면이다.4 is a view for explaining a cooling unit including an air circulation unit according to an embodiment.
도 5는 일 실시예에 따른 미세유로를 포함하는 냉각부를 설명하기 위한 도면이다.5 is a view for explaining a cooling unit including a microchannel according to an embodiment.
도 6은 일 실시예에 따른 열전도성부를 포함하는 냉각부를 설명하기 위한 도면이다.6 is a view for explaining a cooling unit including a thermally conductive unit according to an embodiment.
도 7은 일 실시예에 따른 냉각팬을 포함하는 냉각부를 설명하기 위한 도면이다.7 is a view for explaining a cooling unit including a cooling fan according to an embodiment.
본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 수 있으며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하고, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다.Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.
본 발명의 실시예들을 설명함에 있어서 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다. 그리고 후술되는 용어들은 본 발명의 실시예에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례 등에 따라 달라질 수 있다. 그러므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In describing the embodiments of the present invention, if it is determined that a detailed description of a well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.
도 1은 본 발명의 일 실시예에 따른 무선충전 시스템을 설명하기 위한 도면이다. 도 1을 참조하면, 일 실시예에 따른 무선충전 시스템(100)은 무선충전 패드(110), 온도 제어부(120), 냉각부(130) 및 전력 제어부(140) 를 포함할 수 있다. 단, 도 1의 무선충전 시스템(100)은 본 발명의 일 실시예에 불과하므로, 도 1에 의해 본 발명의 사상이 제한 해석되는 것은 아니다.1 is a view for explaining a wireless charging system according to an embodiment of the present invention. Referring to FIG. 1 , the wireless charging system 100 according to an embodiment may include a wireless charging pad 110 , a temperature control unit 120 , a cooling unit 130 , and a power control unit 140 . However, since the wireless charging system 100 of FIG. 1 is only an embodiment of the present invention, the spirit of the present invention is not interpreted as being limited by FIG. 1 .
이때, 실시예에 따라 무선충전 시스템(100)는 도 1에 도시된 구성 중 적어도 하나를 포함하지 않거나 도 1에 도시되지 않은 구성을 추가로 포함할 수 있다. 아울러, 이러한 무선충전 시스템(100)에 포함된 구성 각각은 소프트웨어 모듈이나 하드웨어 모듈 형태로 구현되거나 또는 소프트웨어 모듈과 하드웨어 모듈이 조합된 형태로 구현될 수 있다.At this time, according to an embodiment, the wireless charging system 100 may not include at least one of the components shown in FIG. 1 or may additionally include a configuration not shown in FIG. 1 . In addition, each of the components included in the wireless charging system 100 may be implemented in the form of a software module or a hardware module, or a combination of a software module and a hardware module.
다시 도 1을 참조하면, 무선충전 패드(110)는 외부 송신기(160)로부터 무선으로 제 1 전력을 공급 받아 전기 자동차(1)의 배터리를 충전할 수 있다.Referring back to FIG. 1 , the wireless charging pad 110 may receive first power wirelessly from the external transmitter 160 to charge the battery of the electric vehicle 1 .
이때, 무선충전 패드(110)는 전도성 와이어를 포함하는 코일, 코일의 일면 상에 배치된 자성 소재 및 자성 소재와 이격되어 형성된 금속판을 포함할 수 있다.In this case, the wireless charging pad 110 may include a coil including a conductive wire, a magnetic material disposed on one surface of the coil, and a metal plate formed to be spaced apart from the magnetic material.
온도 제어부(120)는 무선충전 패드(110)의 온도를 모니터링 할 수 있다. The temperature controller 120 may monitor the temperature of the wireless charging pad 110 .
보다 상세히, 온도 제어부(120)는 무선충전 패드(110)의 온도에 따라 후술할 냉각부(130)를 제어할 수 있다. 일 실시예로서, 온도 제어부(120)는 무선충전 패드(110)의 온도가 기 설정된 온도 이상일 경우, 무선충전 패드(110)에서 방열이 수행되도록 냉각부(130)를 제어할 수 있다.In more detail, the temperature control unit 120 may control the cooling unit 130 to be described later according to the temperature of the wireless charging pad 110 . As an embodiment, when the temperature of the wireless charging pad 110 is higher than a preset temperature, the temperature control unit 120 may control the cooling unit 130 to dissipate heat from the wireless charging pad 110 .
한편, 또 다른 실시예로서, 온도 제어부(120)는 전기 자동차에 기본적으로 구비되는 냉각 설비를 이용할 수도 있으며, 예컨대 온도 제어부(120)는 자동차 에어컨을 포함할 수 도 있으나, 이에 한정되는 것은 아니다.Meanwhile, as another embodiment, the temperature control unit 120 may use a cooling facility basically provided in the electric vehicle. For example, the temperature control unit 120 may include an automobile air conditioner, but is not limited thereto.
냉각부(130)는 온도 제어부(120)의 제어를 받아 무선충전 패드(100)에 방열을 수행할 수 있다. 이때, 냉각부(130)는 온도 제어부(120)와 유선(50)으로 연결되어 있을 수 있으나, 이에 한정되는 것은 아니다.The cooling unit 130 may perform heat dissipation to the wireless charging pad 100 under the control of the temperature control unit 120 . At this time, the cooling unit 130 may be connected to the temperature control unit 120 and the wire 50, but is not limited thereto.
일 실시예로서, 냉각부(130)는 무선충전 패드(110)의 자성 소재 또는 금속판에 인접하도록 마련될 수 있으며, 냉각부(130)는 공기 순환부, 미세유로, 열전도성부 및 냉각팬 중 적어도 하나 이상을 포함할 수 있으나, 이에 한정되지는 않는다.As an embodiment, the cooling unit 130 may be provided to be adjacent to the magnetic material or metal plate of the wireless charging pad 110 , and the cooling unit 130 is at least one of an air circulation unit, a micro-channel, a thermal conductive unit, and a cooling fan. It may include one or more, but is not limited thereto.
한편, 냉각부(130)가 공기 순환부를 포함할 경우, 온도 제어부(120)로부터 공기 순환부에 공기가 공급되고, 공기 순환부에 유입된 공기가 무선충전 패드(110)에 순환되면서 무선충전 패드(110)의 방열을 수행할 수 있다.Meanwhile, when the cooling unit 130 includes an air circulation unit, air is supplied to the air circulation unit from the temperature control unit 120 , and the air introduced into the air circulation unit is circulated to the wireless charging pad 110 while circulating the wireless charging pad. The heat dissipation of (110) can be performed.
냉각부(130)가 미세유로를 포함할 경우, 온도 제어부(120)로부터 미세유로에 냉각수가 공급되고, 미세유로에 유입된 냉각수가 무선충전 패드(110)에 순환되면서 무선충전 패드(110)의 방열을 수행할 수 있다. When the cooling unit 130 includes a micro-channel, cooling water is supplied to the micro-channel from the temperature control unit 120, and the cooling water introduced into the micro-channel is circulated to the wireless charging pad 110 while the wireless charging pad 110 is cooled. heat dissipation can be performed.
냉각부(130)가 냉각팬을 포함할 경우, 온도 제어부(120)로부터 냉각팬에 기체 상태의 냉각이 공급되고, 냉각팬에 유입된 기체 상태의 냉각이 무선 충전 패드(110)에 순환되면서 무선충전 패드(110)의 방열을 수행할 수 있다.When the cooling unit 130 includes a cooling fan, gaseous cooling is supplied to the cooling fan from the temperature controller 120 , and the gaseous cooling introduced into the cooling fan is circulated to the wireless charging pad 110 , and wirelessly Heat dissipation of the charging pad 110 may be performed.
냉각부(130)가 열전도성부를 포함할 경우, 예컨대, 열전도성부는 열전도성 시트를 포함할 수 있으며, 열전도성부를 통해 무선충전 패드(110)의 방열을 수행할 수 있다.When the cooling unit 130 includes a thermally conductive part, for example, the thermally conductive part may include a thermally conductive sheet, and may perform heat dissipation of the wireless charging pad 110 through the thermally conductive part.
전력 제어부(140)는 전기 자동차(1)의 시동이 꺼진 상태에서 전기 자동차(1)의 배터리가 충전되는 동안 전기 자동차(1) 내부의 제 2 전력을 온도 제어부(120)에 공급할 수 있다.The power control unit 140 may supply the second power inside the electric vehicle 1 to the temperature control unit 120 while the battery of the electric vehicle 1 is being charged in a state in which the engine of the electric vehicle 1 is turned off.
여기서, 전기 자동차(1) 내부의 제 2 전력은 전기 자동차(1)의 배터리 전력을 포함할 수 있으나, 이에 한정되는 것은 아니다.Here, the second power inside the electric vehicle 1 may include battery power of the electric vehicle 1, but is not limited thereto.
더 나아가, 전력 제어부(140)는 온도 제어부(120)에 제 2 전력을 공급하는 동시에 전기 자동차를 구동시키기 위한 구동부(미도시)의 전원은 차단시킬 수 있다.Furthermore, the power control unit 140 may supply the second power to the temperature control unit 120 and at the same time cut off the power of the driving unit (not shown) for driving the electric vehicle.
여기서 구동부(미도시)는 전기 자동차를 구동시키는데 작동되는 적어도 하나 이상의 장치를 의미한다.Here, the driving unit (not shown) means at least one or more devices operated to drive the electric vehicle.
일 실시예로서, 전력 제어부(140)는 온도 제어부(120)에 제 2 전력을 공급하는 동시에 전기 자동차(1)의 구동부(미도시)의 전원은 차단시켜 구동부(미도시)를 제외한 온도 제어부(120)만 독립적으로 동작되도록 할 수 있다. As an embodiment, the power control unit 140 supplies the second power to the temperature control unit 120 and at the same time cuts off the power of the driving unit (not shown) of the electric vehicle 1, so that the temperature control unit (not shown) except for the driving unit (not shown) 120) can be operated independently.
또 다른 실시예로서, 전력 제어부(140)는 전기 자동차(1)의 구동부(미도시)의 전원을 차단시킨 후, 온도 제어부(120)에 제 2 전력을 공급하는 것도 가능하다.As another embodiment, the power control unit 140 may supply second power to the temperature control unit 120 after shutting off the power of the driving unit (not shown) of the electric vehicle 1 .
이때, 전력 제어부(140)의 제 2 전력은 외부 송신기(160)에서 무선 충전 패드(110)에 공급하는 전기 자동차(1)의 배터리를 충전하는데 사용되는 제 1 전력보다 낮은 전력일 수 있다.In this case, the second power of the power controller 140 may be lower than the first power used to charge the battery of the electric vehicle 1 supplied from the external transmitter 160 to the wireless charging pad 110 .
한편, 전기 자동차(1)의 시동이 꺼진 상태는 전기 자동차의 엔진이 정지한 상태 또는 전기 자동차가 정차한 상태를 포함할 수 있으나, 이는 실시예일뿐 이에 한정되는 것은 아니다.Meanwhile, the state in which the start of the electric vehicle 1 is turned off may include a state in which the engine of the electric vehicle is stopped or a state in which the electric vehicle is stopped, but this is only an embodiment and is not limited thereto.
도 2는 일 실시예에 따른 무선충전 방법의 절차에 대한 예시적인 순서도이다. 도 2에 도시된 무선충전 방법은 도 1에 도시된 무선충전 시스템(100)에 의해 수행 가능하다. 아울러, 도 2에 도시된 무선충전 방법은 예시적인 것에 불과하다.2 is an exemplary flowchart of a procedure of a wireless charging method according to an embodiment. The wireless charging method shown in FIG. 2 can be performed by the wireless charging system 100 shown in FIG. 1 . In addition, the wireless charging method shown in FIG. 2 is merely exemplary.
도 2를 참조하면, 먼저 사용자가 전기 자동차의 엔진이 정지한 상태 또는 전기 자동차가 정차한 상태에서 무선충전을 시도할 수 있다(단계 S10).Referring to FIG. 2 , first, a user may attempt wireless charging while the engine of the electric vehicle is stopped or the electric vehicle is stopped (step S10 ).
보다 상세하게, 사용자는, 전기 자동차가 무선충전 구역에 정차한 후, 시동을 턴오프 한 상태(엔진이 정지한 상태일 수 있음)에서 무선충전을 진행할 수 있다.More specifically, the user may proceed with wireless charging in a state in which the engine is turned off (the engine may be stopped) after the electric vehicle stops in the wireless charging zone.
이때, 전기 자동차의 무선충전 패드(110)는 외부 송신기(160)로부터 무선으로 제 1 전력을 공급받아 전기 자동차(1)의 배터리를 충전할 수 있다(단계 S20).In this case, the wireless charging pad 110 of the electric vehicle may receive the first power wirelessly from the external transmitter 160 to charge the battery of the electric vehicle 1 (step S20 ).
전기 자동차(1)의 시동이 꺼진 상태에서 전기 자동차의 배터리가 충전되는 동안(전기 자동차(1)의 무선충전을 진행), 전력 제어부(140)는 전기 자동차(1) 내부의 제 2 전력을 온도 제어부(120)에 공급할 수 있으며, 이때 전력 제어부(140)는 전기 자동차(1)의 구동부(미도시)의 전원은 차단시킬 수 있다(단계 S30).While the battery of the electric vehicle is being charged in a state where the engine of the electric vehicle 1 is turned off (wireless charging of the electric vehicle 1 is performed), the power control unit 140 controls the second power inside the electric vehicle 1 to temperature may be supplied to the control unit 120 , and in this case, the power control unit 140 may cut off the power of the driving unit (not shown) of the electric vehicle 1 (step S30 ).
아울러, 전력 제어부(140)는 온도 제어부(120)에 제 2 전력을 공급한 후, 구동부(미도시)의 전원을 차단시킬 수도 있고, 구동부(미도시)의 전원을 차단시킨 후, 온도 제어부(120)에 제 2 전력을 공급하는 것도 가능하다.In addition, the power control unit 140 may supply the second power to the temperature control unit 120 and then cut off the power of the driving unit (not shown), and after cutting off the power of the driving unit (not shown), the temperature control unit ( It is also possible to supply a second power to 120).
마지막으로, 냉각부(130)는 온도 제어부(120)의 제어에 따라 무선충전 패드(110)에 방열을 수행할 수 있다(단계 S40).Finally, the cooling unit 130 may perform heat dissipation to the wireless charging pad 110 under the control of the temperature control unit 120 (step S40).
한편, 전기 자동차(1)의 무선충전이 진행되는 동안, 무선충전 패드(110)에는 코일과 자성소재에 열이 발생되게 되는데, 특히 자성소재에서 발생된 열은 자송소재의 자기적 특성을 변화시킬 뿐만 아니라 열충격에 의해 자성소재의 파괴를 발생시킬 수도 있었다. Meanwhile, while the wireless charging of the electric vehicle 1 is in progress, heat is generated in the coil and magnetic material in the wireless charging pad 110. In particular, the heat generated in the magnetic material may change the magnetic properties of the magnetic material. Not only that, it could also cause the destruction of the magnetic material by thermal shock.
하지만, 일 실시예에 따른 무선충전 시스템을 사용한 무선충전 방법은 전력 제어부(140)가 전기 자동차(1)의 제 2 전력을 온도 제어부(120)에 공급하기 때문에, 온도 제어부(120)의 동작에 따른 냉각부(130)의 무선충전 패드(110) 방열 수행에 따라 무선충전 패드(110)에 발열이 발생하는 문제점을 해결할 수 있다. 또한, 전력 제어부(140)가 제 2 전력을 온도 제어부(120)에 공급하는 동시에 전기 자동차(1)의 구동부(미도시)의 전원을 차단시킴으로써, 구동부(미도시)에 오작동이 발생되지 않도록 하고, 온도 제어부(120)만 독립적으로 구동시킬 수 있도록 할 수 있다.However, in the wireless charging method using the wireless charging system according to an embodiment, since the power control unit 140 supplies the second power of the electric vehicle 1 to the temperature control unit 120 , the operation of the temperature control unit 120 is not affected. As the cooling unit 130 performs heat dissipation of the wireless charging pad 110 , it is possible to solve the problem that heat is generated in the wireless charging pad 110 . In addition, the power control unit 140 supplies the second power to the temperature control unit 120 and at the same time cuts off the power of the driving unit (not shown) of the electric vehicle 1, so that a malfunction does not occur in the driving unit (not shown), , only the temperature control unit 120 may be driven independently.
이하는, 또 다른 실시예에 따른 무선충전 시스템에 대하여 도 3을 통해 후술하도록 한다.Hereinafter, a wireless charging system according to another embodiment will be described later with reference to FIG. 3 .
도 3을 참조하면, 또 다른 실시에에 따른 무선충전 시스템(100)은 무선충전 패드(110), 온도 제어부(120), 냉각부(130), 외부 전력 공급부(145) 및 제어부(150)를 포함할 수 있다.Referring to FIG. 3 , the wireless charging system 100 according to another embodiment includes a wireless charging pad 110 , a temperature control unit 120 , a cooling unit 130 , an external power supply unit 145 and a control unit 150 . may include
이 경우, 무선충전 패드(110), 온도 제어부(120) 및 냉각부(130)에 대한 설명은 앞서 설명한 내용과 동일하므로, 이에 대한 설명은 생략하도록 한다.In this case, the description of the wireless charging pad 110 , the temperature controller 120 , and the cooling unit 130 is the same as that described above, and thus a description thereof will be omitted.
외부 전력 공급부(145)는 제 2 전력을 공급할 수 있는 장치이다.The external power supply unit 145 is a device capable of supplying second power.
이때, 외부 전력 공급부(145)의 제 2 전력은 외부 송신기(160)에서 무선 충전 패드(110)에 공급하는 전기 자동차(1)의 배터리를 충전하는데 사용되는 제 1 전력보다 낮은 전력일 수 있다.In this case, the second power of the external power supply unit 145 may be lower than the first power used to charge the battery of the electric vehicle 1 supplied from the external transmitter 160 to the wireless charging pad 110 .
한편, 외부 전력 공급부(145)의 제 2 전력은 외부 송신기(160)에서 공급되는 전기 자동차(1)의 배터리를 충전하는데 사용되는 제 1 전력보다 낮은 전력이 사용될 수 있다.Meanwhile, the second power of the external power supply 145 may be lower than the first power used to charge the battery of the electric vehicle 1 supplied from the external transmitter 160 .
아울러, 외부 전력 공급부(145)와 온도 제어부(120)는 유선(70) 또는 무선으로 연결될 수 있다. 이때, 외부 전력 공급부(145)와 온도 제어부(120)가 유선(70)으로 연결될 경우, 사용자가 유선(70)을 전기 자동차(1)의 기 설정된 부분에 연결하면, 전기 자동차(1)의 기 설정된 부분과 후술할 제어부(150)가 연결되면서 제어부(150)의 제어에 따라 제 2 전력이 온도 제어부(120)에 공급될 수 있으나, 이에 한정되지 않는다.In addition, the external power supply unit 145 and the temperature control unit 120 may be connected by wire 70 or wirelessly. At this time, when the external power supply 145 and the temperature controller 120 are connected by a wire 70 , when the user connects the wire 70 to a preset portion of the electric vehicle 1 , the The second power may be supplied to the temperature control unit 120 according to the control of the control unit 150 while the set portion and the control unit 150 to be described later are connected, but is not limited thereto.
더 나아가, 외부 전력 공급부(145)와 온도 제어부(120)가 유선(70)으로 연결될 경우, 사용자가 유선(70)을 전기 자동차(1)의 기 설정된 부분에 연결하면, 전기 자동차(1)의 기 설정된 부분과 온도 제어부(120)가 직접적으로 연결되어 제 2 전력이 온도 제어부(120)에 공급될 수도 있다.Furthermore, when the external power supply 145 and the temperature controller 120 are connected by a wire 70 , when the user connects the wire 70 to a preset part of the electric vehicle 1 , the The preset portion and the temperature control unit 120 may be directly connected to supply the second power to the temperature control unit 120 .
한편, 외부 전력 공급부(145)와 온도 제어부(120)가 무선으로 연결될 경우, 온도 제어부(120)는 외부 전력 공급부(145)로부터 무선으로 제 2 전력을 공급받을 수도 있으나, 이에 한정되는 것은 아니다.Meanwhile, when the external power supply unit 145 and the temperature control unit 120 are wirelessly connected, the temperature control unit 120 may receive the second power wirelessly from the external power supply unit 145, but is not limited thereto.
제어부(150)는 전기 자동차(1)의 시동이 꺼진 상태에서 전기 자동차(1)의 배터리가 충전되는 동안 외부 전력 공급부(145)의 제 2 전력이 온도 제어부(120)에 공급되도록 제어할 수 있다.The control unit 150 may control the second power of the external power supply unit 145 to be supplied to the temperature control unit 120 while the battery of the electric vehicle 1 is being charged in a state in which the engine of the electric vehicle 1 is turned off. .
여기서, 전기 자동차(1)의 시동이 꺼진 상태는 전기 자동차의 엔진이 정지한 상태 또는 전기 자동차가 정차한 상태를 포함할 수 있으나, 이는 실시예일뿐 이에 한정되는 것은 아니다.Here, the state in which the start of the electric vehicle 1 is turned off may include a state in which the engine of the electric vehicle is stopped or a state in which the electric vehicle is stopped, but this is only an embodiment and is not limited thereto.
이하는, 냉각부(130)의 다양한 실시예에 대하여 도 4 내지 도 7을 참조하여 상세히 후술하도록 한다.Hereinafter, various embodiments of the cooling unit 130 will be described in detail with reference to FIGS. 4 to 7 .
도 4는 일 실시예에 따른 냉각부가 공기 순환부를 포함할 경우를 설명하기 위한 도면이다.4 is a view for explaining a case in which the cooling unit includes an air circulation unit according to an embodiment.
먼저, 도 4를 참조하면, 냉각부(130)는 공기 순환부(300)를 포함할 수 있다.First, referring to FIG. 4 , the cooling unit 130 may include an air circulation unit 300 .
이 경우, 냉각부(130)의 공기 순환부(300)는 무선충전 패드(110)의 자성 소재(180) 및 금속판(170) 사이의 빈 공간 또는 스페이서부 대신 공기 순환부(300)가 마련될 수 있다. 이때, 공기 순환부(300)로 유입되는 공기는 온도 제어부(120)로부터 공급받을 수 있다.In this case, the air circulation unit 300 of the cooling unit 130 may be provided with an air circulation unit 300 instead of an empty space or a spacer unit between the magnetic material 180 and the metal plate 170 of the wireless charging pad 110 . can At this time, the air flowing into the air circulation unit 300 may be supplied from the temperature control unit 120 .
이러한 본 발명의 일 실시예에 따르면 무선충전 패드(110)는 온도 제어부(120)로부터 공급되는 공기가 자성 소재(180)의 표면과 직접 접촉하여 순환할 수 있는 공기 순환부(300)를 포함함으로써, 공기 순환부(300)를 포함하지 않은 무선충전 패드(110)에 비해 충전 효율을 0.1% 이상, 구체적으로 0.2% 내지 10%, 더욱 구체적으로 0.5% 내지 5%까지 향상시킬 수 있다. 뿐만 아니라, 자성 소재(180) 및 코일(190)에서 발생하는 열로 인하여 인접하는 회로에 발생할 수 있는 기기적인 손상을 방지할 수 있다.According to this embodiment of the present invention, the wireless charging pad 110 includes an air circulation unit 300 that can circulate air supplied from the temperature control unit 120 in direct contact with the surface of the magnetic material 180 . , It is possible to improve the charging efficiency by 0.1% or more, specifically 0.2% to 10%, more specifically 0.5% to 5% compared to the wireless charging pad 110 that does not include the air circulation unit 300 . In addition, it is possible to prevent mechanical damage that may occur in adjacent circuits due to heat generated from the magnetic material 180 and the coil 190 .
따라서, 냉각부(130)가 공기 순환부(300)를 포함할 경우, 온도 제어부(120) 로부터 공급된 공기가 무선충전 패드(110)의 자성 소재(180)의 표면과 직접 접촉하여 순환할 수 있기 때문에 충전 효율이 향상됨과 함께 방열 특성이 개선될 수 있으며, 습기로 인한 자성 소재의 변성을 최소화할 수 있다.Therefore, when the cooling unit 130 includes the air circulation unit 300, the air supplied from the temperature control unit 120 can circulate in direct contact with the surface of the magnetic material 180 of the wireless charging pad 110. Therefore, it is possible to improve the charging efficiency and improve the heat dissipation characteristics, and it is possible to minimize the deterioration of the magnetic material due to moisture.
도 5는 일 실시예에 따른 냉각부가 미세유로를 포함할 경우를 설명하기 위한 도면이다.5 is a diagram for explaining a case in which a cooling unit includes a microchannel according to an exemplary embodiment.
도 5를 참조하면, 냉각부(130)는 미세유로(400)를 포함할 수 있다.Referring to FIG. 5 , the cooling unit 130 may include a microchannel 400 .
이 경우, 냉각부(130)의 미세유로(400)는 무선충전 패드(110)의 자성 소재(180)의 인접부, 금속판(170) 및 자성 소재(180)와 코일(190) 사이 중 적어도 한 부분에 마련될 수 있으나, 이에 한정되는 것은 아니다. 한편, 미세유로(400)가 자성 소재(180)와 코일(190) 사이에 마련될 경우에는 자성소재(180)와 코일(190)에서 발생하는 열을 동시에 처리할 수 있다.In this case, the microchannel 400 of the cooling unit 130 is at least one of the adjacent portion of the magnetic material 180 of the wireless charging pad 110 , the metal plate 170 , and between the magnetic material 180 and the coil 190 . It may be provided in the portion, but is not limited thereto. Meanwhile, when the microchannel 400 is provided between the magnetic material 180 and the coil 190 , heat generated from the magnetic material 180 and the coil 190 can be simultaneously processed.
또한, 냉각부(130)의 미세유로(400)는, 미세유로(400)를 순환하며 흐르는 냉각을 위한 유체를 더 포함할 수 있다. 이때 유체는 자성 소재(180)에서 발생하는 열을 외부로 전달할 수 있다. 구체적으로 유체는 자성 소재(180)에서 발생하는 열을 냉각기로 전달할 수 있다.In addition, the micro-channel 400 of the cooling unit 130 may further include a cooling fluid that circulates and flows through the micro-channel 400 . In this case, the fluid may transfer heat generated from the magnetic material 180 to the outside. Specifically, the fluid may transfer heat generated from the magnetic material 180 to the cooler.
이러한, 유체는 기체 또는 액체일 수 있으며, 예를 들어 공기, 물 또는 그 외 냉매로 사용되는 액상 또는 기상의 유체일 수 있다. 구체적으로, 유체는 공기, 물, 오일(예: 엔진오일), 알코올(예: 에틸렌글리콜, 프로필렌글리콜, 부동액), 또는 이들의 혼합물일 수 있으나, 이에 한정되는 것은 아니다.Such a fluid may be gas or liquid, for example, air, water, or other liquid or gaseous fluid used as a refrigerant. Specifically, the fluid may be air, water, oil (eg, engine oil), alcohol (eg, ethylene glycol, propylene glycol, antifreeze), or a mixture thereof, but is not limited thereto.
한편, 온도 제어부(120)는 유체를 효과적으로 냉각시키기 위한 방식 및 구조를 채용할 수 있다. 예를 들어, 온도 제어부(120)는 공냉식 또는 수냉식으로 냉각부(130)의 미세유로(400) 내부 유체를 냉각시킬 수 있다.Meanwhile, the temperature controller 120 may adopt a method and structure for effectively cooling the fluid. For example, the temperature control unit 120 may cool the fluid inside the microchannel 400 of the cooling unit 130 by air cooling or water cooling.
이때, 온도 제어부(120)는 방수 및 방진을 위해 밀폐된 구조를 가지면서 냉각부(130)의 미세유로(400)와 연결될 수 있다. 더 나아가 냉각부(130)의 미세유로(400)의 유입구 및 배출구에 연결유로를 통해 온도 제어부(120)와 연결될 수도 있으나, 이에 한정되는 것은 아니다.In this case, the temperature control unit 120 may be connected to the microchannel 400 of the cooling unit 130 while having a sealed structure for waterproofing and dustproofing. Furthermore, the cooling unit 130 may be connected to the temperature controller 120 through a connection passage at the inlet and the outlet of the microchannel 400 , but is not limited thereto.
따라서, 냉각부(130)가 미세유로(400)를 포함할 경우, 일 실시예로서, 자성 소재(180)의 내부 또는 자성 소재(180)의 인접부에 냉각부(130)의 미세유로(400)를 배치하여 냉매를 통해 무선충전 패드(110)에 발생되는 열을 쉽게 배출할 수 있다.Accordingly, when the cooling unit 130 includes the microchannel 400 , as an embodiment, the microchannel 400 of the cooling unit 130 is located inside the magnetic material 180 or adjacent to the magnetic material 180 . ) to easily dissipate the heat generated in the wireless charging pad 110 through the refrigerant.
한편, 일 실시예로서, 온도 제어부(120)가 전기 자동차 내부에 구비된 에어컨을 포함할 경우, 냉각부(130)의 미세유로 유입구 및 배출구와 연결된 연결유로와 에어컨이 연결될 수도 있으나 이에 한정되는 것은 아니다.On the other hand, as an embodiment, when the temperature controller 120 includes an air conditioner provided inside the electric vehicle, the air conditioner may be connected to a connection passage connected to the micro-channel inlet and outlet of the cooling unit 130 and the air conditioner is not limited thereto. no.
도 6은 일 실시예에 따른 냉각부가 열전도성부를 포함할 경우를 설명하기 위한 도면이다.6 is a view for explaining a case in which a cooling unit includes a thermally conductive unit according to an exemplary embodiment.
도 6을 참조하면, 냉각부(130)는 열전도성부(500)를 포함할 수 있다.Referring to FIG. 6 , the cooling unit 130 may include a thermally conductive unit 500 .
이 경우, 냉각부(130)의 열전도성부(500)는 자성 소재(180) 내부에 마련될 수 있다.In this case, the thermally conductive part 500 of the cooling part 130 may be provided inside the magnetic material 180 .
구체적으로, 냉각부(130)의 열전도성부는 망 구조를 갖는 메쉬 시트, 리본 시트 또는 복수개의 홀을 포함하는 열전도성 시트를 포함할 수 있다. 이때, 냉각부(130)는 무선충전 패드(110)에 사용되는 자성 소재(180)의 내부에 자기장이 다닐 수 있도록 오픈되어 있는 구조인, 망 구조를 갖는 메쉬 시트, 리본 시트 또는 복수개의 홀을 포함하는 열전도성 시트를 포함하는 열전도성부(500)를 포함함으로써, 자성 소재(180) 내에서 발생하는 열을 쉽게 방출할 수 있으며, 전기 자동차(1)의 배터리 충전 효율을 더욱 향상시킬 수 있다.Specifically, the thermally conductive portion of the cooling unit 130 may include a mesh sheet having a network structure, a ribbon sheet, or a thermally conductive sheet including a plurality of holes. At this time, the cooling unit 130 is a mesh sheet, a ribbon sheet or a plurality of holes having a mesh structure, which is an open structure so that a magnetic field can travel inside the magnetic material 180 used in the wireless charging pad 110 . By including the thermally conductive part 500 including the thermally conductive sheet, heat generated in the magnetic material 180 can be easily dissipated, and the battery charging efficiency of the electric vehicle 1 can be further improved.
도 7은 일 실시예에 따른 냉각부가 냉각팬을 포함할 경우를 설명하기 위한 도면이다.7 is a view for explaining a case in which the cooling unit includes a cooling fan according to an exemplary embodiment.
도 7을 참조하면, 냉각부(130)는 냉각팬(600)을 포함할 수 있다.Referring to FIG. 7 , the cooling unit 130 may include a cooling fan 600 .
이 경우, 냉각부(130)의 냉각팬(600)은 무선충전 패드(110)의 금속판(170)의 후면 또는 자성 소재(180)의 인접부에 마련될 수 있다. 보다 구체적으로, 냉각부(130)의 냉각팬(600)은 온도 제어부(120)로부터 유입된 기체 상태의 냉각이 무선충전 패드(110)의 자성 소재에서 발생하는 열을 순환시킬 수 있으며, 냉각팬(600)으로 유입되는 공기는 온도 제어부(120)로부터 공급 받을 수 있다.In this case, the cooling fan 600 of the cooling unit 130 may be provided on the rear surface of the metal plate 170 of the wireless charging pad 110 or adjacent to the magnetic material 180 . More specifically, the cooling fan 600 of the cooling unit 130 may circulate the heat generated in the magnetic material of the wireless charging pad 110 by cooling the gaseous state introduced from the temperature control unit 120 , the cooling fan The air flowing into the 600 may be supplied from the temperature controller 120 .
이러한 본 발명의 일 실시예에 따르면 무선충전 패드(110)는 온도 제어부(120)로부터 공급되는 기체 상태의 냉각이 자성 소재(180)의 표면과 직접 접촉하여 순환할 수 있도록 동작하는 냉각팬(600)을 포함함으로써, 냉각팬(600)을 포함하지 않은 무선충전 패드(110)에 비해 충전 효율이 향상될 수 있다. 뿐만 아니라, 자성 소재(180) 및 코일(190)에서 발생하는 열로 인하여 인접하는 회로에 발생할 수 있는 기기적인 손상을 방지할 수 있다.According to this embodiment of the present invention, the wireless charging pad 110 is a cooling fan 600 that operates so that the cooling of the gaseous state supplied from the temperature controller 120 can circulate in direct contact with the surface of the magnetic material 180 . ) by including, the charging efficiency can be improved compared to the wireless charging pad 110 that does not include the cooling fan 600 . In addition, it is possible to prevent mechanical damage that may occur in adjacent circuits due to heat generated from the magnetic material 180 and the coil 190 .
따라서, 냉각부(130)가 냉각팬(600)을 포함할 경우, 온도 제어부(120)로부터 공급된 기체 상태의 냉각이 무선충전 패드(110)의 자성 소재(180)의 표면과 직접 접촉하여 순환할 수 있기 때문에 충전 효율이 향상됨과 함께 방열 특성이 개선될 수 있으며, 습기로 인한 자성 소재(180)의 변성을 최소화할 수도 있다.Therefore, when the cooling unit 130 includes the cooling fan 600, the cooling of the gaseous state supplied from the temperature control unit 120 is in direct contact with the surface of the magnetic material 180 of the wireless charging pad 110 and circulates. Therefore, the charging efficiency may be improved and the heat dissipation characteristics may be improved, and the deterioration of the magnetic material 180 due to moisture may be minimized.
이상에서 살펴본 바와 같이, 일 실시예에 따르면, 전기 자동차등의 무선 충전 수행 동안, 온도 제어부는 무선 충전을 위한 제 1 전력과 상이한 냉각부를 동작시킬 수 있는 전기 자동차 내부의 제 2 전력을 공급받을 수 있기 때문에 온도 제어부가 제 2 전력을 공급 받아 냉각부를 동작 시킴으로써 공기 또는 냉각수의 순환을 통해 무선충전 패드의 자성소재 또는 금속판의 온도를 낮추어 무선충전 패드에 발생하는 열을 효과적으로 방출할 수 있다.As described above, according to an embodiment, while performing wireless charging of the electric vehicle, the temperature control unit may receive second power inside the electric vehicle capable of operating a cooling unit different from the first power for wireless charging. Therefore, the temperature control unit receives the second power and operates the cooling unit, thereby lowering the temperature of the magnetic material or metal plate of the wireless charging pad through the circulation of air or cooling water, thereby effectively dissipating the heat generated in the wireless charging pad.
또한, 온도 제어부에 전기 자동차 내부의 제 2 전력을 공급하는 전력 제어부는, 전기 자동차의 구동부의 전원은 차단시키고, 온도 제어부에 제 2 전력을 공급함으로써, 온도 제어부만 독립적으로 작동하도록 할 수 있다.In addition, the power control unit that supplies the second power inside the electric vehicle to the temperature control unit cuts off the power of the driving unit of the electric vehicle and supplies the second power to the temperature control unit, so that only the temperature control unit operates independently.
또한, 전기 자동차의 무선 충전 수행 동안, 전기 자동차의 구동부의 전원은 차단되기 때문에 안전성이 증가될 수 있다.In addition, since the power of the driving unit of the electric vehicle is cut off during wireless charging of the electric vehicle, safety may be increased.
한편, 이러한 일 실시예에 따른 방법은 이러한 방법의 각 단계를 수행하도록 프로그램된 컴퓨터 판독가능한 기록매체에 저장된 컴퓨터 프로그램의 형태로 구현 가능하고, 또한 이러한 방법의 각 단계를 수행하도록 프로그램된 컴퓨터 프로그램을 저장하는 컴퓨터 판독가능한 기록매체의 형태로 구현 가능하다.On the other hand, the method according to this embodiment can be implemented in the form of a computer program stored in a computer-readable recording medium programmed to perform each step of the method, and also includes a computer program programmed to perform each step of the method. It can be implemented in the form of a computer-readable recording medium for storing.
이상의 설명은 본 발명의 기술 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 품질에서 벗어나지 않는 범위에서 다양한 수정 및 변형이 가능할 것이다. 따라서, 본 발명에 개시된 실시예들은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 균등한 범위 내에 있는 모든 기술사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The above description is merely illustrative of the technical idea of the present invention, and various modifications and variations will be possible without departing from the essential quality of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (10)

  1. 외부 송신기로부터 무선으로 제 1 전력을 공급 받아 전기 자동차의 배터리를 충전하는 무선충전 패드와,A wireless charging pad that receives the first power wirelessly from an external transmitter and charges the battery of the electric vehicle;
    상기 무선충전 패드의 온도를 모니터링 하는 온도 제어부와,And a temperature control unit for monitoring the temperature of the wireless charging pad;
    상기 온도 제어부의 제어를 받아 상기 무선충전 패드에 방열을 수행하는 냉각부와,And a cooling unit for performing heat dissipation to the wireless charging pad under the control of the temperature control unit;
    상기 전기 자동차의 시동이 꺼진 상태에서 상기 전기 자동차의 배터리가 충전되는 동안 제 2 전력을 상기 온도 제어부에 공급하는 전력 제어부를 포함하고,and a power control unit for supplying second power to the temperature control unit while the battery of the electric vehicle is being charged in a state in which the engine of the electric vehicle is turned off,
    상기 전력 제어부는,The power control unit,
    상기 온도 제어부에 상기 제 2 전력을 공급하는 동시에 상기 전기 자동차를 구동시키기 위한 구동부의 전원을 차단하는supplying the second power to the temperature control unit and at the same time cutting off the power of the driving unit for driving the electric vehicle
    무선 충전 시스템.wireless charging system.
  2. 제 1 항에 있어서,The method of claim 1,
    상기 제 2 전력은,The second power is
    상기 제 1 전력보다 낮은 전력인power lower than the first power
    무선 충전 시스템.wireless charging system.
  3. 제 1 항에 있어서,The method of claim 1,
    상기 제 2 전력은,The second power is
    상기 전기 자동차의 배터리 전력을 포함하는,including battery power of the electric vehicle,
    무선 충전 시스템.wireless charging system.
  4. 제 1 항에 있어서,The method of claim 1,
    상기 제 2 전력은 The second power is
    상기 전기 자동차의 외부에 있는 외부 전력 공급부로부터 공급될 수 있는may be supplied from an external power supply external to the electric vehicle.
    무선 충전 시스템.wireless charging system.
  5. 제 1 항에 있어서,The method of claim 1,
    상기 온도 제어부는,The temperature control unit,
    상기 무선충전 패드의 온도가 기 설정된 온도 이상일 경우, 상기 무선충전 패드에 방열을 수행하도록 상기 냉각부를 제어하는When the temperature of the wireless charging pad is above a preset temperature, controlling the cooling unit to dissipate heat to the wireless charging pad
    무선 충전 시스템.wireless charging system.
  6. 제 1 항에 있어서,The method of claim 1,
    상기 전기 자동차의 시동이 꺼진 상태는,When the electric vehicle is turned off,
    상기 전기 자동차의 엔진이 정지한 상태 또는 상기 전기 자동차가 정차한 상태를 포함하는Including a state in which the engine of the electric vehicle is stopped or a state in which the electric vehicle is stopped
    무선 충전 시스템.wireless charging system.
  7. 제 1 항에 있어서,The method of claim 1,
    상기 무선충전 패드는,The wireless charging pad,
    전도성 와이어를 포함하는 코일과,A coil comprising a conductive wire;
    상기 코일의 일면 상에 배치된 자성 소재와,a magnetic material disposed on one surface of the coil;
    상기 자성 소재와 이격되어 형성된 금속판을 포함하고,and a metal plate formed to be spaced apart from the magnetic material,
    상기 냉각부는 상기 자성 소재 또는 상기 금속판에 인접하도록 배치되는The cooling unit is disposed adjacent to the magnetic material or the metal plate.
    무선 충전 시스템.wireless charging system.
  8. 제 7 항에 있어서,8. The method of claim 7,
    상기 냉각부는,The cooling unit,
    공기 순환부, 미세유로, 열전도성부 및 냉각팬 중 적어도 하나 이상을 포함하는comprising at least one of an air circulation unit, a micro-channel, a thermal conductive unit, and a cooling fan
    무선 충전 시스템.wireless charging system.
  9. 제 8 항에 있어서,9. The method of claim 8,
    상기 냉각부는,The cooling unit,
    상기 온도 제어부의 제어에 기초하여 상기 공기 순환부, 미세유로, 열전도성부 및 냉각팬 중 적어도 하나를 통해 공기 또는 냉각수를 상기 무선충전 패드에 순환시켜 상기 무선충전 패드의 방열을 수행하는Based on the control of the temperature controller, air or cooling water is circulated to the wireless charging pad through at least one of the air circulation unit, the micro-channel, the thermal conductive unit, and the cooling fan to perform heat dissipation of the wireless charging pad
    무선 충전 시스템.wireless charging system.
  10. 배터리로부터 전기 자동차의 엔진에 전력을 공급하는 전력 공급부와,A power supply unit for supplying power from the battery to the engine of the electric vehicle;
    외부 송신기로부터 무선으로 제 1 전력을 공급 받아 전기 자동차의 배터리를 충전하는 무선충전 패드와,A wireless charging pad that receives the first power wirelessly from an external transmitter and charges the battery of the electric vehicle;
    상기 무선충전 패드의 온도를 모니터링 하는 온도 제어부와,And a temperature control unit for monitoring the temperature of the wireless charging pad;
    상기 온도 제어부의 제어를 받아 상기 무선충전 패드에 방열을 수행하는 냉각부와,And a cooling unit for performing heat dissipation to the wireless charging pad under the control of the temperature control unit;
    상기 전기 자동차의 시동이 꺼진 상태에서 상기 전기 자동차의 배터리가 충전되는 동안 상기 전기 자동차 내부의 제 2 전력을 상기 온도 제어부에 공급하는 전력 제어부를 포함하고,and a power control unit configured to supply second power inside the electric vehicle to the temperature control unit while the battery of the electric vehicle is being charged in a state in which the engine of the electric vehicle is turned off,
    상기 전력 제어부는,The power control unit,
    상기 온도 제어부에 상기 제 2 전력을 공급하는 동시에 상기 전기 자동차를 구동시키기 위한 구동부의 전원을 차단하는,supplying the second power to the temperature control unit and at the same time cutting off power of a driving unit for driving the electric vehicle;
    전기 자동차.electric vehicle.
PCT/KR2020/017144 2019-11-28 2020-11-27 Wireless charging system and electric vehicle including same WO2021107704A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0155658 2019-11-28
KR1020190155658A KR20210066425A (en) 2019-11-28 2019-11-28 Wireless charging system and electric vehicle comprising same

Publications (1)

Publication Number Publication Date
WO2021107704A1 true WO2021107704A1 (en) 2021-06-03

Family

ID=76128902

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/017144 WO2021107704A1 (en) 2019-11-28 2020-11-27 Wireless charging system and electric vehicle including same

Country Status (2)

Country Link
KR (1) KR20210066425A (en)
WO (1) WO2021107704A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114655047A (en) * 2022-03-16 2022-06-24 哈尔滨商业大学 Electric automobile wireless charging vehicle-mounted equipment cooling device based on pulsating heat pipe
CN115871482A (en) * 2023-02-03 2023-03-31 威泊(上海)新能源科技股份有限公司 Wireless battery pack system and method supporting mobile charging of new energy automobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170011715A (en) * 2015-07-24 2017-02-02 엘지이노텍 주식회사 Wireless charger for vehicle
US20170096073A1 (en) * 2014-04-29 2017-04-06 Tesla Motors, Inc. Charging station providing thermal conditioning of electric vehicle during charging session
US20170274778A1 (en) * 2016-03-25 2017-09-28 Qualcomm Incorporated Systems and methods for thermal management in wireless power transfer
US20180154781A1 (en) * 2016-12-05 2018-06-07 Lear Corporation Air Cooled Wireless Charging Pad
KR101971884B1 (en) * 2018-11-14 2019-04-25 (주)그린파워 Cooling Pad and Electronic Vehicle using that

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110042403A (en) 2009-10-19 2011-04-27 김현민 Wireless charging system for electric car and charging method therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170096073A1 (en) * 2014-04-29 2017-04-06 Tesla Motors, Inc. Charging station providing thermal conditioning of electric vehicle during charging session
KR20170011715A (en) * 2015-07-24 2017-02-02 엘지이노텍 주식회사 Wireless charger for vehicle
US20170274778A1 (en) * 2016-03-25 2017-09-28 Qualcomm Incorporated Systems and methods for thermal management in wireless power transfer
US20180154781A1 (en) * 2016-12-05 2018-06-07 Lear Corporation Air Cooled Wireless Charging Pad
KR101971884B1 (en) * 2018-11-14 2019-04-25 (주)그린파워 Cooling Pad and Electronic Vehicle using that

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114655047A (en) * 2022-03-16 2022-06-24 哈尔滨商业大学 Electric automobile wireless charging vehicle-mounted equipment cooling device based on pulsating heat pipe
CN115871482A (en) * 2023-02-03 2023-03-31 威泊(上海)新能源科技股份有限公司 Wireless battery pack system and method supporting mobile charging of new energy automobile
CN115871482B (en) * 2023-02-03 2023-05-16 威泊(上海)新能源科技股份有限公司 Wireless battery pack system and method supporting mobile charging of new energy automobile

Also Published As

Publication number Publication date
KR20210066425A (en) 2021-06-07

Similar Documents

Publication Publication Date Title
WO2021107704A1 (en) Wireless charging system and electric vehicle including same
WO2017018669A1 (en) Wireless charging device for vehicle
WO2017078473A1 (en) Wireless power transmitter and receiver for vehicle
WO2020054998A1 (en) Battery module, battery pack comprising same battery module, and vehicle comprising same battery pack
WO2018174484A1 (en) Converter
WO2015126209A1 (en) Battery pack
WO2017131432A1 (en) Battery module and energy storing device having same
US11848565B2 (en) Air-cooled wireless power transmission system
WO2019117449A1 (en) Battery pack
WO2020204534A1 (en) Converter
WO2018012937A1 (en) High-voltage cooling fan motor unit
WO2020105869A1 (en) Wireless control system, wireless connection method, and battery pack
WO2019231070A1 (en) System for controlling battery cell temperature and method for controlling same
WO2020138584A1 (en) Portable air cooler
WO2015163526A1 (en) Electric heating device
WO2013137612A1 (en) Battery cooling system using thermoelectric element
WO2022149749A1 (en) Secondary battery charge/discharge system comprising peltier device, and temperature control method of secondary battery charge/discharge system using same
WO2018135816A1 (en) Heat dissipation device for wireless power transmitter
WO2022164058A1 (en) Secondary battery charging/discharging system including insulation pad, and method for controlling temperature of secondary battery charging/discharging system by using same
WO2023080448A1 (en) Cooling water control unit
WO2019231223A1 (en) Wireless power transmission apparatus having improved exothermal performance
WO2015083942A1 (en) Image processing apparatus and control method thereof
WO2011002191A2 (en) Thermoelectric power-generating system using the waste heat of a cooling fluid
WO2016153085A1 (en) Electric compressor inverter cooling device, and inverter assembly comprising same
WO2022211273A1 (en) Semiconductor circuit breaker

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20892593

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20892593

Country of ref document: EP

Kind code of ref document: A1