KR20220156180A - High-speed charging system using solar cell - Google Patents

High-speed charging system using solar cell Download PDF

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KR20220156180A
KR20220156180A KR1020210063830A KR20210063830A KR20220156180A KR 20220156180 A KR20220156180 A KR 20220156180A KR 1020210063830 A KR1020210063830 A KR 1020210063830A KR 20210063830 A KR20210063830 A KR 20210063830A KR 20220156180 A KR20220156180 A KR 20220156180A
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South Korea
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solar
charging
power
input port
charging system
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KR1020210063830A
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Korean (ko)
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나철훈
이현희
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목포대학교산학협력단
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    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/38—Energy storage means, e.g. batteries, structurally associated with PV modules
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present invention relates to a high-speed charging system using solar power, which comprises: a solar charging unit including a solar panel to which a plurality of solar cell modules are connected and a solar charging controller connected to an input terminal of the solar panel and performing maximum power point estimation control; and a charging module including an input terminal in which a photovoltaic input port to which an output terminal of the solar charging unit is connected and a commercial power input port capable of receiving power from the outside are installed, and a power conversion unit for checking the remaining amount of a storage battery and switching from the photovoltaic input port to the commercial power input port when the remaining amount is less than a set amount. By including a charging module capable of charging with both commercial power and solar power generation, the application range of a charger can be widened, and the high-capacity and high-speed charging system can be provided.

Description

태양광을 이용한 고속 충전시스템{HIGH-SPEED CHARGING SYSTEM USING SOLAR CELL}High-speed charging system using sunlight {HIGH-SPEED CHARGING SYSTEM USING SOLAR CELL}

본 발명은 배터리의 충전시스템에 관한 것으로서, 더욱 상세하게는 상용전원과 태양광 발전을 통한 충전을 겸용할 수 있는 충전모듈을 구비한 고속충전시스템에 관한 것이다. The present invention relates to a charging system for a battery, and more particularly, to a high-speed charging system having a charging module capable of charging both commercial power and solar power generation.

일반적으로 태양광발전은 태양광을 직접 전기에너지로 변환시키는 기술로서 햇빛을 받으면 광전효과에 의해 전기가 발생하는 태양전지를 이용한 발전방식이다. In general, photovoltaic power generation is a technology that directly converts sunlight into electrical energy, and is a power generation method using a solar cell in which electricity is generated by a photoelectric effect when sunlight is received.

태양광 에너지를 이용하여 발전하는 태양광 발전시스템은 태양광 에너지를 전기로 전환하기 위해서 별도의 기계장치를 필요로 하지 않는다. 이에 따라 태양광 발전시스템은 유지보수가 거의 필요 없으며 긴 수명을 갖는다는 장점을 가진다.A photovoltaic power generation system that generates power using solar energy does not require a separate mechanical device to convert solar energy into electricity. Accordingly, the photovoltaic power generation system has the advantage of requiring little maintenance and having a long lifespan.

한편, 최근 이모빌리티(E-Mobility)의 시장이 많이 확대되고 있는바, 이모빌러티는 전기를 동력으로 하는 모든 이동수단을 지칭하는 것으로서, 퍼스널모빌리티, 스마트모빌리티 및 마이크로모빌리티 등이 있고, 퍼스널 모빌리티의 분류에는 자이로타입, 전동 스케이트보드, 전동킥보드, 전기자전거, 전기스쿠터 등 다양한 형태의 제품이 있다. On the other hand, the market for e-mobility (E-Mobility) is expanding a lot recently. E-mobility refers to all means of transportation powered by electricity, and includes personal mobility, smart mobility, and micro-mobility, and personal mobility There are various types of products such as gyro type, electric skateboard, electric kickboard, electric bicycle, and electric scooter.

또한, 최근 전동기기로 인해 화재 사고 등이 잇따르고 있는데, 이모빌리티 전용 충전 스테이션의 부재로 사용하지 않거나 잠을 자는 시간 동안에 가정이나 회사 등 옥내에서 이모빌리티를 충전시키는데 배터리의 충격 또는 과충전 시 폭발로 인한 화재 위험이 존재한다. In addition, fire accidents have recently occurred due to electric devices. Due to the absence of a charging station dedicated to e-mobility, e-mobility is charged indoors such as at home or at work while not in use or during sleeping hours. A fire hazard exists.

이모빌리티 충전 스테이션 구축을 위해서는 안정적인 전력 공급이 가능해야 하며, 사용자의 편의를 위해 고속충전 기능을 제공해야 한다. 고속충전을 위해서는 높은 전력을 제공해야 하고, 충전기 및 충전 케이블이 높은 전력을 수용할 수 있어야 한다.To build an e-mobility charging station, a stable power supply must be available, and a high-speed charging function must be provided for user convenience. High power must be provided for fast charging, and the charger and charging cable must be able to accommodate the high power.

종래에는, 이모빌리티를 충전하기 위해 사용자들이 보유한 충전기는 대부분 저가형으로 몇 번 사용하고 재 구입하는 상황인데, 이는 배터리 성능저하에 영향을 미치며 안전사고의 위험이 있다. Conventionally, chargers owned by users to charge e-mobility are mostly low-priced, used several times, and then repurchased, which affects battery performance deterioration and poses a risk of safety accidents.

따라서, 배터리 성능을 체크할 수 있으며 고속 충전이 가능한 고급형 충전기는 상대적으로 가격이 비싸므로 이를 제공하는 스테이션을 구축하여 관리하는 통합시스템이 필요한 실정이다. Therefore, since high-end chargers capable of checking battery performance and capable of high-speed charging are relatively expensive, there is a need for an integrated system that builds and manages a station that provides them.

한국특허 10-1871020호(태양광 인버터를 이용한 에너지 저장장치의 배터리 충전시스템)Korean Patent No. 10-1871020 (Battery charging system of energy storage device using solar inverter)

본 발명은 상술한 종래기술의 문제점을 해결하고자 하는 것으로서, 본 발명의 목적은 상용전원과 태양광 발전을 통한 충전을 겸용할 수 있는 충전모듈을 구비하여, 충전기의 적용범위를 넓게 하고 고용량 고속의 충전시스템을 제공할 수 있는 충전시스템을 제공하는 것이다. The present invention is to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a charging module capable of charging through commercial power and solar power generation, thereby widening the application range of the charger and providing high-capacity, high-speed It is to provide a charging system capable of providing a charging system.

상술한 목적을 달성하기 위하여, 본 발명에 의한 태양광을 이용한 고속 충전시스템은, 복수의 태양전지모듈이 연결된 태양광 패널과, 상기 태양광 패널의 입력단에 연결되어 최대전력점 추정 제어를 수행하는 태양광 충전 컨트롤러를 포함하는 태양광 충전부와, 상기 태양광 충전부의 출력단이 연결되는 태양광발전입력포트와 외부로부터 전원공급이 가능한 상용전원입력포트가 설치되는 입력단자부와, 축전지의 잔량을 체크하여 설정된 잔량 미만시에 상기 태양광발전입력포트로부터 상기 상용전원입력포트로 전환하여 하는 전력변환부를 포함하는 충전모듈을 구비하는 것을 특징으로 한다. In order to achieve the above object, a high-speed charging system using sunlight according to the present invention includes a solar panel to which a plurality of solar cell modules are connected, and a maximum power point estimation control connected to an input terminal of the solar panel. A solar charging unit including a solar charging controller, a solar power generation input port to which the output terminal of the solar charging unit is connected, an input terminal unit to which a commercial power input port capable of supplying power from the outside is installed, and checking the remaining amount of the storage battery It is characterized by having a charging module including a power conversion unit for switching from the photovoltaic input port to the commercial power input port when the remaining amount is less than the set amount.

여기서, 상기 태양광 충전부는, 상기 최대전력점 전압이 6 ~ 36V의 범위이고, 출력전류는 0.05~ 5A 범위인 것을 특징으로 한다. Here, the solar charging unit is characterized in that the maximum power point voltage is in the range of 6 ~ 36V, and the output current is in the range of 0.05 ~ 5A.

상술한 구성을 가지는 본 발명에 의한 태양광을 이용한 고속 충전시스템에 의하면, 상용전원과 태양광 발전을 통한 충전을 겸용할 수 있는 충전모듈을 구비하여, 충전기의 적용범위를 넓게 하고 고용량 고속의 충전시스템을 제공할 수 있다. According to the high-speed charging system using solar light according to the present invention having the above-described configuration, a charging module capable of charging both commercial power and solar power generation is provided, widening the application range of the charger and high-capacity and high-speed charging system can be provided.

도 1은 본 발명에 의한 태양광을 이용한 고속 충전시스템을 나타내는 개략도이다. 1 is a schematic diagram showing a high-speed charging system using sunlight according to the present invention.

이하, 첨부된 도면을 참조하여 본 발명에 의한 태양광을 이용한 고속 충전시스템에 대하여 실시예로써 상세하게 설명한다. Hereinafter, with reference to the accompanying drawings, a high-speed charging system using sunlight according to the present invention will be described in detail as an embodiment.

본 발명에 의한 태양광을 이용한 고속 충전시스템(1)은, 태양광 충전부(10)와, 충전모듈(30)을 포함한다. The fast charging system 1 using sunlight according to the present invention includes a solar charging unit 10 and a charging module 30 .

상기 태양광 충전부(10)는 태양광 패널(11)과 태양광 충전 컨트롤러(12)를 포함하여 구성된다. 상기 태양광 패널(11)은 복수개의 태양전지 셀(Solar cell)을 구비하고 태양광 에너지를 전기 에너지로 변환하는 수단이다. The solar charger 10 includes a solar panel 11 and a solar charge controller 12 . The solar panel 11 includes a plurality of solar cells and is a means for converting sunlight energy into electrical energy.

상기 태양광 패널(11)에는 태양광 충전 컨트롤러(12)가 연결된다. 상기 태양광 충전 컨트롤러(12)는 상기 태양광 패널의 입력단에 연결되어 최대전력점 추정(MPPT) 제어를 수행한다. A solar charge controller 12 is connected to the solar panel 11 . The solar charge controller 12 is connected to the input terminal of the solar panel and performs maximum power point estimation (MPPT) control.

상기 태양광 충전 컨트롤러(12)에는 상기 태양광 패널이 병렬로 연결될 때 바로 인접하여 설치되는 태양광 패널로부터 단락 등에 의해 발생되는 역전류를 차단하는 역전류 보호회로가 설치될 수 있다. A reverse current protection circuit may be installed in the solar charge controller 12 to block a reverse current generated by a short circuit or the like from a solar panel installed immediately adjacent to the solar panel when the solar panel is connected in parallel.

또한, 상기 태양광 충전 컨트롤러(12)에는 과열방지 회로, 출력방제 보호회로 등이 설치되어, 태양광 패널로부터 배터리를 충전하는 시간을 효과적으로 단축하여 정전류 기능을 통해 배터리가 과충전되지 않도록 효과적으로 보호하도록 구성되는 것이 바람직하다. In addition, an overheat protection circuit and an output protection circuit are installed in the solar charge controller 12 to effectively reduce the charging time of the battery from the solar panel and effectively protect the battery from being overcharged through a constant current function. it is desirable to be

본 실시예에서, 상기 태양광 충전부는, 상기 최대전력점 전압이 6 ~ 36V의 범위이고, 출력전류는 0.05~ 5A 범위로 설정되는 것을 예로 한다. In this embodiment, the solar charging unit, for example, the maximum power point voltage is in the range of 6 ~ 36V, the output current is set in the range of 0.05 ~ 5A.

상기 충전모듈(30)은 상기 태양광 충전부(10)의 출력과 상용전원(20)의 출력 중 어느 하나를 선택하여 출력단자부를 통해 충전대상 외부기기로 출력전류를 공급할 수 있도록 구성된다. The charging module 30 is configured to select one of the output of the solar charging unit 10 and the output of the commercial power supply 20 to supply an output current to an external device to be charged through an output terminal unit.

상기 충전모듈(30)은 입력단자부(31)와, 전력변환부(32)와, 출력단자부(33)를 포함하여 구성된다. The charging module 30 includes an input terminal unit 31, a power conversion unit 32, and an output terminal unit 33.

상기 입력단자부(31)는, 태양광발전 입력포트(31a)와, 상용전원입력포트(31b)를 포함한다. 상기 태양광발전 입력포트(31a)는 상기 태양광 충전부의 출력단이 연결되며, 상기 태양광 충전부로부터 생성된 직류전력이 공급되도록 구성된다. 또한, 상기 상용전원입력포트(31b)는 상기 상용전원(20)의 출력단이 연결되며, 교류전력이 공급되도록 구성된다. The input terminal unit 31 includes a photovoltaic power generation input port 31a and a commercial power input port 31b. The photovoltaic power input port 31a is connected to the output end of the photovoltaic charging unit, and is configured to supply DC power generated from the solar charging unit. In addition, the commercial power input port 31b is connected to the output terminal of the commercial power source 20 and configured to supply AC power.

상술한 바와 같이, 상기 충전모듈(30)은 상기 입력단자부(31)에 의해 AC와 DC 두 개의 입력 모드를 지원하면서 5A 이상의 출력 전류를 공급할 수 있도록 구성된다. As described above, the charging module 30 is configured to supply an output current of 5A or more while supporting AC and DC two input modes by the input terminal unit 31 .

상기 충전모듈(30)은 상기 태양광발전 입력포트(31a)에 전기적으로 연결되어 상기 직류전력을 교류로 변환하는 인버터를 포함하도록 구성된다. The charging module 30 is configured to include an inverter electrically connected to the photovoltaic input port 31a to convert the DC power into AC.

상기 충전모듈(30)에는 전력변환부(32)가 마련된다. 상기 전력변환부(32)는 축전지의 잔량을 체크하여 설정된 잔량 미만시에 상기 태양광발전입력포트로부터 상기 상용전원입력포트로 전환하도록 구성된다. A power conversion unit 32 is provided in the charging module 30 . The power conversion unit 32 is configured to check the remaining amount of the storage battery and switch from the photovoltaic input port to the commercial power input port when the remaining amount is less than a set amount.

상기 전력변환부(32)는 기후가 좋지 않아 태양광발전이 어려운 경우이거나, 배터리에 남아있는 전력량이 현저히 떨어진 경우에 외부로부터 전원코드를 상용전원입력포트(31b)에 꽂아 태양전지모듈이 아닌 상용전원으로서 전기에너지를 출력단자부(33)를 통해 외부기기의 배터리에 충전시키고 공급될 수 있도록 한다.The power conversion unit 32 plugs a power cord from the outside into the commercial power input port 31b when solar power generation is difficult due to bad weather or when the amount of power remaining in the battery drops significantly, and the As a power source, electrical energy can be charged and supplied to the battery of an external device through the output terminal unit 33.

이로써, 상용전원과 태양광 발전을 통한 충전을 겸용할 수 있는 충전모듈을 구비하여, 충전기의 적용범위를 넓게 하고 고용량 고속의 충전시스템을 제공할 수 있다. Accordingly, by providing a charging module capable of charging both commercial power and solar power, it is possible to widen the range of application of the charger and provide a high-capacity and high-speed charging system.

이상에서 설명한 본 발명은 전술한 실시 예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 명백할 것이다.The present invention described above is not limited by the foregoing embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within a range that does not deviate from the technical spirit of the present invention. will be clear to those who have knowledge of

1 : 태양광을 이용한 고속 충전시스템
10 : 태양광 충전부
11 : 태양광 패널
12 : 태양광 충전 컨트롤러
20 : 상용전원
30 : 충전모듈
31 : 입력단자부
32 : 전력변환부
33 : 출력단자부1: High-speed charging system using sunlight
10: Solar charging unit
11: solar panel
12: solar charge controller
20: commercial power
30: charging module
31: input terminal unit
32: power conversion unit
33: output terminal unit

Claims (2)

복수의 태양전지모듈이 연결된 태양광 패널과, 상기 태양광 패널의 입력단에 연결되어 최대전력점 추정 제어를 수행하는 태양광 충전 컨트롤러를 포함하는 태양광 충전부와,
상기 태양광 충전부의 출력단이 연결되는 태양광발전입력포트와 외부로부터 전원공급이 가능한 상용전원입력포트가 설치되는 입력단자부와, 축전지의 잔량을 체크하여 설정된 잔량 미만시에 상기 태양광발전입력포트로부터 상기 상용전원입력포트로 전환하여 하는 전력변환부를 포함하는 충전모듈을
구비하는 것을 특징으로 하는 태양광을 이용한 고속 충전시스템.
A solar charger including a solar panel to which a plurality of solar cell modules are connected, and a solar charge controller connected to an input terminal of the solar panel to perform maximum power point estimation control;
The photovoltaic input port to which the output terminal of the solar charging unit is connected, the input terminal to which the commercial power input port capable of supplying power from the outside is installed, and the remaining amount of the storage battery are checked and, when the remaining amount is less than the set amount, from the photovoltaic input port A charging module including a power conversion unit that converts to the commercial power input port
High-speed charging system using sunlight, characterized in that it is provided.
 제 1 항에 있어서,
상기 태양광 충전부는, 상기 최대전력점 전압이 6 ~ 36V의 범위이고, 출력전류는 0.05~ 5A 범위인 것을 특징으로 하는 태양광을 이용한 고속 충전시스템.
According to claim 1,
The solar charging unit, the maximum power point voltage is in the range of 6 ~ 36V, the output current is a high-speed charging system using sunlight, characterized in that in the range of 0.05 ~ 5A.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101871020B1 (en) 2014-03-20 2018-07-19 엘에스산전 주식회사 system for charging battery of energy storage system using PCS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101871020B1 (en) 2014-03-20 2018-07-19 엘에스산전 주식회사 system for charging battery of energy storage system using PCS

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