KR20200082098A - Charging connector for electric vehicle and over-heating preventing device for connector - Google Patents

Charging connector for electric vehicle and over-heating preventing device for connector Download PDF

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KR20200082098A
KR20200082098A KR1020180172318A KR20180172318A KR20200082098A KR 20200082098 A KR20200082098 A KR 20200082098A KR 1020180172318 A KR1020180172318 A KR 1020180172318A KR 20180172318 A KR20180172318 A KR 20180172318A KR 20200082098 A KR20200082098 A KR 20200082098A
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South Korea
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charging
line
connector
temperature sensor
electric vehicle
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KR1020180172318A
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Korean (ko)
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허석배
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(주)클린일렉스
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    • 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
    • B60L53/14—Conductive energy transfer
    • B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
    • 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
    • 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
    • B60L53/14—Conductive energy transfer
    • B60L53/18—Cables specially adapted for charging electric vehicles
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts
    • 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
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/302—Temperature sensors
    • 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
    • Y02T90/14—Plug-in electric vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present invention relates to a connector for charging an electric vehicle which has an overheating prevention function. According to the present invention, the connector for charging an electric vehicle is realized on at least one side of a charging cable plug or a socket of an EV and an EVSE having a plurality of connection pins including a power line for supplying power, a control line for transferring a charging control signal, and a ground line for grounding. A temperature sensor turned on when a prescribed temperature or a higher temperature is sensed in a turning-off state is coupled around the power line to sense the temperature of the power line. One side of the temperature sensor is electrically connected to the control line, and the other side of the temperature sensor is connected to the ground line. When the power line is overheated to turn on the temperature sensor, the control line is connected to the ground line to block transmission of a control signal to stop charging of the EV.

Description

전기 자동차 충전용 커넥터 및 과열 방지 장치{Charging connector for electric vehicle and over-heating preventing device for connector}{Charging connector for electric vehicle and over-heating preventing device for connector}

본 발명은 과열 방지 기능을 갖는 전기 자동차 충전용 커넥터에 관한 것이다.The present invention relates to a connector for charging an electric vehicle having a function of preventing overheating.

전기 자동차(Electric Vehicle, EV) 또는 플러그-인 하이브리드 자동차(Plug-In Hybrid Electric Vehicle, PHEV)와 같은 친환경 자동차는 배터리 충전을 위하여 충전소에 설치된 전기 자동차 충전 설비(Electric Vehicle Supply Equipment, EVSE)를 이용한다.Green vehicles, such as electric vehicles (EVs) or plug-in hybrid electric vehicles (PHEVs), use electric vehicle supply equipment (EVSE) installed in charging stations for battery charging. .

이를 위하여, 전기 자동차 충전 장치(Electric Vehicle Charging Controller, EVCC)가 EV 내에 탑재되고, EV 및 EVSE와 통신하며, 전기 자동차의 충전을 제어한다.To this end, an electric vehicle charging controller (EVCC) is mounted in the EV, communicates with the EV and EVSE, and controls charging of the electric vehicle.

예를 들어, EVCC가 전기 자동차로부터 충전 시작을 지시하는 신호를 수신하면, 충전을 시작하도록 제어할 수 있으며, 전기 자동차로부터 충전 종료를 지시하는 신호를 수신하면, 충전을 종료하도록 제어할 수 있다.For example, when the EVCC receives a signal instructing to start charging from the electric vehicle, it may be controlled to start charging, and when it receives a signal instructing to end charging from the electric vehicle, it may be controlled to terminate charging.

이때, 전기 자동차는 완속 충전 방식 또는 고속 충전 방식에 따라 충전될 수 있다. 완속 충전 시 약 7시간의 충전 시간이 소요되며, 고속 충전 시 약 30분의 충전 시간이 소요된다. 이에 따라, 완속 충전 또는 고속 충전이 종료되는 시점에 충전 종료를 위한 절차가 정상적으로 진행되어야 한다.At this time, the electric vehicle may be charged according to the slow charging method or the fast charging method. A full charge takes about 7 hours to charge, and a fast charge takes about 30 minutes to charge. Accordingly, the procedure for the termination of charging should proceed normally at the time when the slow charging or the fast charging ends.

한편, 전기 자동차 충전은, 일반적으로 EV가 충전 케이블을 매개로 EVSE에 접속되어 전력을 공급하는 방식으로 이루어진다. 이때, 충전 케이블은 양 단에 제 1 및 제 2 플러그가 구비될 수 있고, EV와 EVSE에는 제 1 및 제 2 플러그가 접속되는 제 1 콘센트 및 제 2 콘센트가 각각 구비될 수 있다. On the other hand, electric vehicle charging is generally performed in such a way that EV is connected to EVSE via a charging cable to supply power. At this time, the charging cable may be provided with first and second plugs at both ends, and EV and EVSE may include first and second outlets to which the first and second plugs are connected, respectively.

그러나 이와 같은 EV와 EVSE의 콘센트에 접속되는 충전 케이블의 플러그는, 통상적으로 16A 이상의 고압 전류가 흐르기 때문에, 대용량의 전기 에너지 차량을 충전할 때에, 플러그 핀이나 케이블에서 발열이 보통의 전자 기기에 비해서 크게 발생한다. 이와 같이, 콘센트와 플러그의 연결 부위 또는 충전 케이블 자체에서 발생되는 고온의 열은 전력 전송의 효율을 저하시키고, 자칫 충전중 EV나 EVSE에 화재를 발생시킬 위험이 있다.However, the plug of the charging cable connected to the outlets of EV and EVSE typically flows high voltage of 16A or more, so when charging a large-capacity electric energy vehicle, the heat generated from the plug pins or cables compared to ordinary electronic equipment It occurs greatly. As described above, the high temperature heat generated at the connection portion between the outlet and the plug or the charging cable itself degrades the efficiency of power transmission, and there is a risk of generating a fire in EV or EVSE during charging.

한국공개특허 10-2018-0092091(2018.08.17.공개, 전기 자동차의 충전을 위한 충전 제어 장치)Korean Patent Publication No. 10-2018-0092091 (published on August 17, 2018, charging control device for charging an electric vehicle)

본 발명은 상기와 같은 문제점을 해결하기 위하여 제안된 것으로, 전기 자동차의 충전 과정에서 발생되는 열을 감지하여, 콘센트, 플러그 및 케이블 등에서 소정 온도 이상으로 열이 발생하는 경우 충전이 중단되도록 하는 전기 자동차 충전용 커넥터를 제공하는 것을 목적으로 한다.The present invention is proposed to solve the above problems, and detects heat generated in the charging process of the electric vehicle, so that the electric vehicle to stop charging when heat is generated above a predetermined temperature in an outlet, a plug, and a cable, etc. It is an object to provide a connector for charging.

또한, 본 발명의 다른 목적은 이미 설치되거나 제조된 기존의 충전 설비나 충전 케이블의 구조를 변경하지 않고 간단하게 적용할 수 있는 전기 자동차 충전용 커넥터를 제공하는 것이다.In addition, another object of the present invention is to provide a connector for charging an electric vehicle that can be simply applied without changing the structure of an existing charging facility or a charging cable that is already installed or manufactured.

상기와 같은 목적을 달성하기 위한 본 발명의 전기 자동차 충전용 커넥터는, 전력을 공급하는 전력선과, 충전 제어신호를 전달하는 제어선과, 접지를 위한 접지선을 포함하는 다수의 접속 핀을 갖는 EV 및 EVSE의 콘센트 또는 충전 케이블 플러그의 적어도 어느 일 측에 구현되고, 오프 상태에서 소정의 온도 이상이 감지되면 온되는 온도 센서가 상기 전력선 주위에 결합되어 상기 전력선의 온도를 감지하며, 상기 온도 센서는 일 측이 상기 제어선에 전기적으로 연결되고, 타 측이 상기 접지선에 연결되어, 상기 전력선이 과열되어 상기 온도 센서가 온될 때 상기 제어선이 상기 접지선에 연결되어 제어신호의 전송이 차단됨으로써, 상기 EV의 충전이 중단되도록 구성된다.The electric vehicle charging connector of the present invention for achieving the above object is EV and EVSE having a plurality of connection pins including a power line for supplying power, a control line for transmitting a charge control signal, and a ground line for grounding. Is implemented on at least one side of the outlet or charging cable plug, and when a predetermined temperature or more is detected in the off state, a temperature sensor that is turned on is coupled around the power line to sense the temperature of the power line, and the temperature sensor is one side The control line is electrically connected to the control line, the other side is connected to the ground line, and when the power line is overheated and the temperature sensor is turned on, the control line is connected to the ground line to block transmission of a control signal, thereby preventing the EV It is configured to stop charging.

여기서, 상기 온도 센서는, 써미스터 또는 바이메탈 센서인 것을 특징으로 한다.Here, the temperature sensor is characterized in that the thermistor or bimetallic sensor.

또한, 상기 온도 센서는 120℃ 이상에서 온되는 것을 특징으로 한다.In addition, the temperature sensor is characterized in that it is turned on at 120 ℃ or more.

그리고 상기와 같은 목적을 달성하기 위한 본 발명의 과열 감지 장치는, 전력을 공급하는 전력선과, 충전 제어신호를 전달하는 제어선과, 접지를 위한 접지선을 포함하는 커넥터 하우징 내부에 삽입되어 결합되고, 절연 소재의 기판과, 상기 전력선, 상기 제어선 및 상기 접지선에 대응하는 위치에서 상기 기판을 관통하여 형성되는 전력선 홀, 제어선 홀 및 접지선 홀과, 상기 전력선 홀 주위에 결합되는 온도 센서와, 상기 기판의 표면 또는 내부를 따라 형성되며, 상기 온도 센서의 일 측과 상기 제어선 홀을 연결하는 제 1 전도성 회로와, 상기 온도 센서의 타 측과 상기 접지선 홀을 연결하는 제 2 전도성 회로를 포함한다.And the overheat detection device of the present invention for achieving the above object is inserted into the connector housing including a power line for supplying power, a control line for transmitting a charge control signal, and a ground line for grounding, and is insulated. A substrate of a material, a power line hole, a control line hole and a ground line hole formed through the substrate at positions corresponding to the power line, the control line and the ground line, a temperature sensor coupled around the power line hole, and the substrate It is formed along the surface or the inside of the, and includes a first conductive circuit connecting one side of the temperature sensor and the control line hole, and a second conductive circuit connecting the other side of the temperature sensor and the ground line hole.

본 발명은 전력선에서 발생되는 열의 온도에 따라 제어선의 기능을 차단하여 충전을 중단하도록 구성됨으로써, 간단한 구조로 커넥터의 과열을 방지할 수 있다.The present invention is configured to stop charging by blocking the function of the control line according to the temperature of heat generated from the power line, thereby preventing overheating of the connector with a simple structure.

또한, 본 발명은 이미 설치되거나 제조된 기존의 충전 설비나 충전 케이블의 본체 구조를 변경하지 않고 간단하게 과열 방지 시스템을 구현할 수 있다.In addition, the present invention can easily implement an overheating prevention system without changing the body structure of an existing charging facility or a charging cable that is already installed or manufactured.

도 1은 본 실시예에 따른 전기 자동차 충전 시스템을 나타낸 도면,
도 2는 본 실시예의 케이블 커넥터를 나타낸 정면도,
도 3은 도 2의 커넥터에 대한 과열 방지 구조를 나타낸 개념도,
도 4는 본 실시예에 따른 과열 방지 장치의 구현 예를 나타낸 도면.1 is a view showing an electric vehicle charging system according to the present embodiment,
Figure 2 is a front view showing the cable connector of this embodiment,
Figure 3 is a conceptual diagram showing the overheating prevention structure for the connector of Figure 2,
4 is a view showing an implementation example of an overheating prevention device according to the present embodiment.

본 발명과 본 발명의 실시에 의해 달성되는 기술적 과제는 다음에서 설명하는 바람직한 실시예들에 의해 명확해질 것이다. 이하 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 살펴보기로 한다. 후술되는 본 발명의 실시예들의 차이는 상호 배타적이지 않은 사항으로 이해되어야 한다. 즉, 본 발명의 기술 사상 및 범위를 벗어나지 않으면서, 기재되어 있는 특정 형상, 구조 및 특성은, 일 실시예에 관련하여 다른 실시예로 구현될 수 있으며, 각각의 개시된 실시예 내의 개별 구성요소의 위치 또는 배치는 변경될 수 있음이 이해되어야 하며, 도면에서 유사한 참조부호는 여러 측면에 걸쳐서 동일하거나 유사한 기능을 지칭하며, 길이 및 면적, 두께 등과 그 형태는 편의를 위하여 과장되어 표현될 수도 있다.The technical problems achieved by the present invention and the practice of the present invention will be clarified by the preferred embodiments described below. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the differences between the embodiments of the present invention described below are not mutually exclusive. That is, without departing from the spirit and scope of the invention, the specific shapes, structures, and properties described may be implemented in other embodiments in relation to one embodiment, and of individual components within each disclosed embodiment. It should be understood that the position or arrangement may be changed, and similar reference numerals in the drawings refer to the same or similar functions across various aspects, and the length, area, thickness, and the like may be exaggerated for convenience.

도 1은 본 실시예에 따른 전기 자동차 충전 시스템을 나타낸 도면이고, 도 2는 본 실시예의 케이블 커넥터를 나타낸 정면도이며, 도 3은 도 2의 커넥터에 대한 과열 방지 구조를 나타낸 개념도이고, 도 4는 본 실시예에 따른 과열 방지 장치의 구현 예를 나타낸 도면이다.1 is a view showing an electric vehicle charging system according to the present embodiment, FIG. 2 is a front view showing a cable connector of the present embodiment, FIG. 3 is a conceptual view showing a structure for preventing overheating of the connector of FIG. 2, and FIG. 4 is It is a view showing an example of the implementation of the overheating prevention device according to the present embodiment.

먼저, 도 1을 참조하면, 본 실시예의 전기 자동차 충전 시스템은, 충전을 필요로 하는 전기 자동차(EV, 10)와, 충전소 등에 설치되어 전력을 공급하는 전기 자동차 충전 설비(EVSE, 20)와, EV(10)와 EVSE(20)를 연결하는 충전 케이블(30)을 포함한다.First, referring to FIG. 1, the electric vehicle charging system of this embodiment includes an electric vehicle EV, 10 that needs charging, and an electric vehicle charging facility EVSE 20 that is installed at a charging station or the like to supply electric power. It includes a charging cable 30 for connecting the EV (10) and EVSE (20).

EV(10)는 내부에 충전된 배터리의 전력으로 구동이 이루어지고, 충전 가능한 다양한 종류의 차량일 수 있으며, 하이브리드 자동차, 전기 버스 등을 포함할 수 있다.The EV 10 is driven by the power of a battery charged therein, and may be various types of vehicles that can be charged, and may include a hybrid vehicle, an electric bus, and the like.

EVSE(20)는 충전소나 주차장 등에 설치될 수 있고, 전력이 공급되는 곳이라면 충전을 필요로하는 다양한 위치에 설치될 수 있다. The EVSE 20 may be installed at a charging station or a parking lot, and may be installed at various locations that require charging as long as power is supplied.

충전 케이블(30)은 일단은 EVSE(20)에 연결되고 타단은 EV에 접속되기 위한 플러그가 구비된다. 본 실시예에서 충전 케이블(30)은 EVSE(20)에 연결되어 종속된 구성을 예시하였으나, EVSE(20)와 별도로 독립적으로 구성될 수 있다. 독립 구성의 충전 케이블(30)은 일 단에 EV(10)에 접속되는 제1 플러그를 구비하고, 타단에 EVSE에 접속되는 제2 플러그를 구비할 것이다. 또한, EV(10) 및 EVSE(20)에는 충전 케이블의 각 플러그가 접속되기 위한 콘센트(소켓)이 마련될 것이다. 이하, 본 실시예의 설명에서 플러그 및 콘센트의 어느 일 측 또는 양 측을 통칭하여 '커넥터'라 한다. 따라서 본 실시예의 충전 케이블(30)은 적어도 일 측 단부에 커넥터(100)를 구비한다.The charging cable 30 has one end connected to the EVSE 20 and the other end provided with a plug for connecting to the EV. In this embodiment, the charging cable 30 is connected to the EVSE 20 and illustrated a dependent configuration, but may be configured independently of the EVSE 20. The charging cable 30 of the independent configuration will have a first plug connected to the EV 10 at one end, and a second plug connected to the EVSE at the other end. In addition, an outlet (socket) for connecting each plug of the charging cable will be provided in the EV 10 and EVSE 20. Hereinafter, in the description of the present embodiment, either or both sides of the plug and the outlet are collectively referred to as a'connector'. Therefore, the charging cable 30 of this embodiment is provided with a connector 100 on at least one side end.

도 2를 참조하면, 충전 케이블(30)은 커넥터(100)를 통하여 전력 전송이 이루어지기 위한 적어도 5개의 접속 핀을 제공한다. 커넥터(100)에서 제공되는 접속 핀은 상대의 접속 핀을 수용하는 암 커넥터로 구성되거나, 상대의 접속 핀에 삽입되는 수 커넥터로 구성될 수 있다. 본 실시예의 충전 시스템에 있어서, 충전 케이블(30) 측의 커넥터(100) 즉, 플러그는 암 커넥터 구조를 이루고, EV(10) 또는 EVSE(20) 측의 커넥터(100) 즉, 콘센트는 수 커넥터 구조를 이룬다.Referring to FIG. 2, the charging cable 30 provides at least five connection pins for power transmission through the connector 100. The connection pin provided in the connector 100 may be configured as a female connector accommodating the connection pin of the other, or may be composed of a male connector inserted into the connection pin of the other. In the charging system of the present embodiment, the connector 100 on the charging cable 30 side, that is, the plug forms a female connector structure, and the connector 100 on the EV 10 or EVSE 20 side, that is, the outlet is a male connector Structure.

본 실시예의 커넥터(100)는 전력을 전송하는 한 쌍의 전력 핀(L,N)과, 충전 제어 신호를 전송하는 제어 핀(CP : Control Pilot 또는 Communication Pin)과, 충전 케이블을 접지시키는 접지 핀(PE : Protective Earth)과, 충전 케이블의 접속을 감지하는 감지 핀(PP : Proximity Pin)을 제공한다. 커넥터(100)는 전력 핀(L,N)을 통하여 전력이 공급됨에 따라 전력 핀(L,N)에 주로 과열이 발생된다.The connector 100 of this embodiment includes a pair of power pins (L,N) for transmitting power, a control pin (CP: Control Pilot or Communication Pin) for transmitting a charging control signal, and a ground pin for grounding the charging cable. (PE: Protective Earth) and a sensing pin (PP: Proximity Pin) that detects the connection of the charging cable. As the connector 100 is supplied with power through the power pins L and N, overheating is mainly generated in the power pins L and N.

이를 위하여, 도 3에 도시된 바와 같이, 본 실시예의 커넥터(100)는 전력 핀(L,N)에 열을 감지하는 온도 센서(S)가 결합되고, 온도 센서(S)는 일 단이 제어 핀(CP)에 연결되며 타 단이 접지 핀(PE)에 연결된다. 제어 핀(CP)은 충전이 이루어지도록 하는 제어 신호의 통신 선로로서, 접지 선(PE)에 연결되는 경우 제어 신호가 전송되지 않으므로 커넥터(100)를 통한 충전이 이루어지지 않는다.To this end, as shown in Figure 3, the connector 100 of the present embodiment is coupled to a temperature sensor (S) for sensing heat to the power pins (L, N), the temperature sensor (S) is one end control It is connected to the pin CP and the other end is connected to the ground pin PE. The control pin CP is a communication line of a control signal to be charged, and when connected to the ground line PE, the control signal is not transmitted, so charging through the connector 100 is not performed.

또한, 본 실시예의 온도 센서(S)는 일정 이하의 온도에서는 오프 상태를 유지하지만, 소정 온도 이상이 되는 경우 온 상태로 변환되는 온오프 센서로 구성되며, 써미스터(thermistor) 또는 바이메탈 센서(bimetal sensor)로 구성될 수 있다. 이때, 온도 센서(S)가 온오프 되는 온도의 기준은 임의로 설정될 수 있으며, 일 예로, 120℃ 이상의 온도가 감지되는 경우 온 되도록 설정될 수 있다. 따라서 커넥터(100)는 전력 핀(L,N)이 120℃ 이상으로 과열될 때 온도 센서(S)가 온 됨에 따라 제어 핀(CP)이 접지되어 충전이 중단되고, 중단 중 온도가 120℃ 미만으로 내려갈 때 온도 센서(S)가 오프되어 다시 충전이 시작된다. 이러한 온도 센서(S)는 한 쌍의 전력 핀(L,N) 모두에 구비되는 것이 바람직하다.In addition, the temperature sensor S of the present embodiment maintains an off state at a temperature below a certain level, but is composed of an on-off sensor that is converted to an on state when the temperature exceeds a predetermined temperature, and includes a thermistor or a bimetal sensor. ). At this time, the reference of the temperature at which the temperature sensor S is turned on or off may be arbitrarily set, and for example, it may be set to be turned on when a temperature of 120° C. or higher is detected. Accordingly, when the power pins L and N are overheated to 120° C. or higher, the connector 100 is grounded, and the control pin CP is grounded to stop charging, and the temperature of the connector 100 is less than 120° C. When going down to the temperature sensor (S) is off and charging is started again. The temperature sensor (S) is preferably provided on all of the pair of power pins (L, N).

이와 같이 본 실시예의 커넥터(100)는 커넥터 내부의 접속 핀을 이용함으로써, 과열 방지 장치는 커넥터의 접속부 즉, 플러그 영역 또는 콘센트 영역에 쉽게 구현될 수 있고, EV(10) 또는 EVSE(20)와는 별도의 결선이 요구되지 않는 장점이 있다. 또한, 이미 제작된 충전 케이블(30)의 플러그나 EV(10) 또는 EVSE(20) 측의 콘센트에 간단한 과정으로 결합시킬 수 있는 장점이 있다.As described above, the connector 100 of the present embodiment uses the connection pin inside the connector, so that the overheating prevention device can be easily implemented in the connection part of the connector, that is, the plug area or the outlet area, and the EV 10 or EVSE 20 There is an advantage that no separate wiring is required. In addition, there is an advantage that can be coupled to the plug of the already manufactured charging cable 30 or the outlet on the EV (10) or EVSE (20) side by a simple process.

도 4를 참조하면, 본 실시예의 커넥터(100)는 절연 소재의 기판(110) 상에 온도 센서(S)와 전도성 회로(C)가 형성되는 과열 방지 장치(100')로 구현될 수 있다. 기판(110)은 절연 소재로서, 커넥터(100)의 단면 형상에 대응하는 원형을 이룰 수 있고, 기판(110)의 직경은 커넥터(100)의 내경에 대응할 수 있다. 또한, 기판(110)에는 커넥터(100)의 접속 핀이 삽입되는 다수의 핀 홀이 형성되고, 전력 핀(L,N)에 대응하는 핀 홀(L',N') 주위에는 온도 센서(S)가 배치된다. 또한, 각 온도 센서(S)는 기판(110) 표면에 형성되는 전도성 회로(C)를 따라 제어 핀(CP)과 접지 핀(PE)에 대응하는 핀 홀(CP',PE')에 연결된다. 따라서 제어 핀(CP)과 접지 핀(PE)에 대응하는 핀 홀(CP',PE')들은 온도 센서(S)를 매개로 연결되어 있다. 전도성 회로(C)는 기판(110) 표면에 인쇄되어 형성되거나 기판(110) 내부에 형성될 수 있다.Referring to FIG. 4, the connector 100 of the present embodiment may be implemented as an overheating prevention device 100 ′ in which a temperature sensor S and a conductive circuit C are formed on an insulating material substrate 110. The substrate 110 is an insulating material, and may form a circle corresponding to the cross-sectional shape of the connector 100, and the diameter of the substrate 110 may correspond to the inner diameter of the connector 100. In addition, a plurality of pin holes into which the connection pins of the connector 100 are inserted is formed on the substrate 110, and the temperature sensors S are around the pin holes L'and N'corresponding to the power pins L and N. ) Is placed. Further, each temperature sensor S is connected to the pin holes CP' and PE' corresponding to the control pin CP and the ground pin PE along the conductive circuit C formed on the surface of the substrate 110. . Therefore, the pin holes CP' and PE' corresponding to the control pin CP and the ground pin PE are connected via the temperature sensor S. The conductive circuit C may be formed by being printed on the surface of the substrate 110 or may be formed inside the substrate 110.

상기와 같이 구현되는 과열 방지 장치(100')는 수 커넥터 구조의 커넥터(100)에 결합될 수 있다. 즉, 커넥터 내부 공간에 삽입되면서, 각 핀 홀에는 그에 대응하는 접속 핀들이 삽입되고, 이때, 전력 핀(L,N)은 온도 센서(S)에 접촉되고, 제어 핀(CP)과 접지 핀(PE)은 핀 홀에 형성된 전도성 회로(C)에 각각 접촉된다. 따라서 제어 핀(CP)과 접지 핀(PE)은 온도 센서(S)와 전도성 회로(C)를 매개로 연결되면서, 온도 센서(S)의 온 오프 동작에 따라 제어 핀(CP)이 접지 또는 활성화되어 충전이 중단되거나 충전이 이루어지게 된다.The overheat prevention device 100 ′ implemented as described above may be coupled to the connector 100 having a male connector structure. That is, as it is inserted into the space inside the connector, connection pins corresponding to each of the pin holes are inserted, and at this time, the power pins L and N contact the temperature sensor S, and the control pin CP and the ground pin ( PE) are respectively contacted to the conductive circuit C formed in the pin hole. Therefore, while the control pin CP and the ground pin PE are connected via the temperature sensor S and the conductive circuit C, the control pin CP is grounded or activated according to the on/off operation of the temperature sensor S. Charging is stopped or charging is performed.

상기와 같은 구성의 과열 방지 장치는 이미 제조된 커넥터 즉, 충전 케이블의 플러그나 EV 또는 EVSE의 콘센트 중 적어도 어느 하나에 추가로 결합되거나, 충전 케이블의 플러그나 EV 또는 EVSE의 콘센트 중 적어도 어느 하나의 내부에 미리 구현될 수 있다. 따라서, 본 실시예의 과열 방지 장치는 EV 또는 EVSE의 충전 시스템 본체를 조작하지 않고도 쉽게 과열 방지 기능을 갖는 전기 자동차 충전 시스템을 구현할 수 있는 장점이 있다.The device for preventing overheating of the above-described configuration is additionally coupled to a connector that is already manufactured, that is, a plug of a charging cable or an outlet of EV or EVSE, or at least one of a plug of a charging cable or an outlet of EV or EVSE It can be implemented in advance inside. Therefore, the overheat prevention apparatus of the present embodiment has an advantage that an electric vehicle charging system having an overheat prevention function can be easily implemented without manipulating the EV or EVSE charging system body.

이상 설명한 바와 같이 본 발명의 예시적인 실시예가 도시되어 설명되었지만, 다양한 변형과 다른 실시예가 본 분야의 숙련된 기술자들에 의해 행해질 수 있을 것이다. 이러한 변형과 다른 실시예들은 첨부된 청구범위에 모두 고려되고 포함되어 본 발명의 진정한 취지 및 범위를 벗어나지 않는다 할 것이다.As described above, although exemplary embodiments of the present invention have been illustrated and described, various modifications and other embodiments may be made by those skilled in the art. These modifications and other embodiments are all to be considered and included in the appended claims will not depart from the true spirit and scope of the invention.

10 : EV 20 : EVSE
30 : 충전 케이블
100 : 커넥터
100' : 과열 방지 장치10: EV 20: EVSE
30: charging cable
100: connector
100': Overheat prevention device

Claims (4)

전력을 공급하는 전력선과, 충전 제어신호를 전달하는 제어선과, 접지를 위한 접지선을 포함하는 다수의 접속 핀을 갖는 EV 및 EVSE의 콘센트 또는 충전 케이블 플러그의 적어도 어느 일 측에 구현되고,
오프 상태에서 소정의 온도 이상이 감지되면 온되는 온도 센서가 상기 전력선 주위에 결합되어 상기 전력선의 온도를 감지하며,
상기 온도 센서는 일 측이 상기 제어선에 전기적으로 연결되고, 타 측이 상기 접지선에 연결되어,
상기 전력선이 과열되어 상기 온도 센서가 온될 때 상기 제어선이 상기 접지선에 연결되어 제어신호의 전송이 차단됨으로써, 상기 EV의 충전이 중단되도록 구성되는 전기 자동차 충전용 커넥터.Is implemented on at least one side of the outlet or charging cable plug of EV and EVSE having a plurality of connection pins including a power line for supplying power, a control line for transmitting a charge control signal, and a ground line for grounding,
When a predetermined temperature or more is detected in the off state, a temperature sensor that is turned on is coupled around the power line to sense the temperature of the power line,
In the temperature sensor, one side is electrically connected to the control line, and the other side is connected to the ground line,
When the power line is overheated and the temperature sensor is turned on, the control line is connected to the ground line to block transmission of a control signal, so that charging of the EV is stopped. 제 1 항에 있어서,
상기 온도 센서는, 써미스터 또는 바이메탈 센서인 것을 특징으로 하는 전기 자동차 충전용 커넥터.According to claim 1,
The temperature sensor, the connector for charging an electric vehicle, characterized in that the thermistor or bimetallic sensor. 제 2 항에 있어서,
상기 온도 센서는 120℃ 이상에서 온되는 것을 특징으로 하는 전기 자동차 충전용 커넥터.According to claim 2,
The temperature sensor is a connector for charging an electric vehicle, characterized in that is turned on at 120 ℃ or more. 전력을 공급하는 전력선과, 충전 제어신호를 전달하는 제어선과, 접지를 위한 접지선을 포함하는 커넥터 하우징 내부에 삽입되어 결합되고,
절연 소재의 기판과,
상기 전력선, 상기 제어선 및 상기 접지선에 대응하는 위치에서 상기 기판을 관통하여 형성되는 전력선 홀, 제어선 홀 및 접지선 홀과,
상기 전력선 홀 주위에 결합되는 온도 센서와,
상기 기판의 표면 또는 내부를 따라 형성되며, 상기 온도 센서의 일 측과 상기 제어선 홀을 연결하는 제 1 전도성 회로와, 상기 온도 센서의 타 측과 상기 접지선 홀을 연결하는 제 2 전도성 회로를 포함하는,
전기 자동차 충전용 커넥터용 과열 방지 장치.
It is inserted into and coupled into a connector housing including a power line for supplying power, a control line for transmitting a charging control signal, and a ground line for grounding.
An insulating substrate,
A power line hole, a control line hole and a ground line hole formed through the substrate at positions corresponding to the power line, the control line and the ground line,
A temperature sensor coupled around the power line hole,
It is formed along the surface or inside of the substrate, and includes a first conductive circuit connecting one side of the temperature sensor and the control line hole, and a second conductive circuit connecting the other side of the temperature sensor and the ground line hole. doing,
Overheating prevention device for electric vehicle charging connector.
KR1020180172318A 2018-12-28 2018-12-28 Charging connector for electric vehicle and over-heating preventing device for connector KR20200082098A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230045651A (en) * 2021-09-27 2023-04-05 한국자동차연구원 Apparatus for controlling charging of electric vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180092091A (en) 2017-02-08 2018-08-17 엘지이노텍 주식회사 Charging control apparatus for electric vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180092091A (en) 2017-02-08 2018-08-17 엘지이노텍 주식회사 Charging control apparatus for electric vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230045651A (en) * 2021-09-27 2023-04-05 한국자동차연구원 Apparatus for controlling charging of electric vehicle

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