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KR101841237B1 - State of Charge Monitoring Method for Battery of Electric Automobile - Google Patents

State of Charge Monitoring Method for Battery of Electric Automobile Download PDF

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KR101841237B1
KR101841237B1 KR1020170167024A KR20170167024A KR101841237B1 KR 101841237 B1 KR101841237 B1 KR 101841237B1 KR 1020170167024 A KR1020170167024 A KR 1020170167024A KR 20170167024 A KR20170167024 A KR 20170167024A KR 101841237 B1 KR101841237 B1 KR 101841237B1
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amount
charging
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정민교
배경수
홍영근
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대영채비(주)
대영코어텍(주)
정민교
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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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B60L11/1861—
    • B60L11/1848—
    • B60L11/1857—
    • 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
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/66—Data transfer between charging stations and vehicles
    • B60L53/665—Methods related to measuring, billing or payment
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
    • 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
    • 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
    • Y02T10/7044—
    • 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

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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)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

본 발명에 따른 전기자동차용 배터리의 충전상태 모니터링방법은, 교류 충전기를 이용하여 전기자동차용 배터리를 충전하는 과정에서의 충전상태 모니터링방법에 있어서, 차량의 초기정보를 입력하는 (a)단계, 차량의 충전이 개시된 시점으로부터, 기 설정된 충전방식전환점까지의 누적충전량을 산출하는 (b)단계 및 상기 누적충전량이 상기 충전방식전환점에 도달한 이후로부터, 상기 차량의 초기정보에 기반하여 기 설정된 분할기준시간 당 충전량을 산출하는 (c)단계를 포함한다.A method for monitoring a state of charge of a battery for an electric vehicle according to the present invention includes the steps of (a) inputting initial information of a vehicle, (B) of calculating a cumulative amount of charge from a point of time when the charging of the battery is started to a preset charging mode switching point, And (c) calculating a charge amount per hour.

Description

전기자동차용 배터리의 충전상태 모니터링방법{State of Charge Monitoring Method for Battery of Electric Automobile}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

본 발명은 전기자동차용 배터리의 충전상태 모니터링방법에 관한 것으로서, 보다 상세하게는 교류 충전기를 통한 충전 과정에서 충전방식전환점을 고려하여 보다 정밀하고 효과적으로 충전상태를 모니터링할 수 있도록 하는 전기자동차용 배터리의 충전상태 모니터링방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for monitoring the state of charge of an electric vehicle battery, and more particularly, And a method for monitoring the state of charge.

최근에는 대체연료의 개발 필요성 및 환경오염 규제 등 다양한 이유로 전기자동차의 개발이 가속화되고 있는 시점이며, 실제로도 많은 종류의 전기자동차가 시판되어 보급되고 있다.In recent years, the development of electric vehicles is accelerating due to various reasons such as the necessity of development of alternative fuels and the regulation of environmental pollution. In fact, many kinds of electric vehicles are on the market.

그리고 이와 같은 전기자동차의 보급을 위해서는, 충전시설 등 제반 시설의 확충이 전제되어야 할 필요가 있다.In order to supply such electric vehicles, it is necessary that the expansion of various facilities such as charging facilities should be premised.

일반적으로 전기자동차용 충전기는 직류(DC) 충전 방식을 가지는 충전기와 교류(AC) 충전 방식을 가지는 충전기로 분류될 수 있다. 이중 교류 충전 방식 충전기의 경우 공급 안정성 및 사용자에의 접근성이 우수하는 장점을 가지고 있으나, 그 특성 상 직류 방식 충전기와 달리 차량과의 통신을 수행할 수 없어 현재 차량의 배터리 충전 상태를 직접적으로 측정하는 것이 불가능하다는 단점이 있다.Generally, an electric vehicle charger can be classified into a charger having a direct current (DC) charging scheme and a charger having an alternating current (AC) charging scheme. In the case of a dual AC charging type charger, it is advantageous in terms of supply stability and accessibility to the user, but unlike a direct current type charger, communication with the vehicle can not be performed, It is impossible.

따라서 종래에는 차량의 배터리 충전 상태를 파악하기 위한 다양한 방법이 연구되고 있으나, 아직까지는 실제 충전량과 예측되는 충전량 사이의 편차가 크다는 문제가 있다.Accordingly, various methods for grasping the state of charge of a battery in a vehicle have been studied. However, there is a problem in that there is a large deviation between the actual charge amount and the predicted charge amount.

따라서 이와 같은 문제점들을 해결하기 위한 방법이 요구된다.Therefore, a method for solving such problems is required.

한국등록특허 제10-0191917호Korean Patent No. 10-0191917

본 발명은 상술한 종래 기술의 문제점을 해결하기 위하여 안출된 발명으로서, 교류 충전기를 통한 충전 과정 시 전기자동차의 배터리 충전 상태를 보다 효과적이고 정밀하게 측정하기 위한 전기자동차용 배터리의 충전상태 모니터링방법을 제공하기 위한 목적을 가진다.Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a method of monitoring a charged state of a battery for an electric vehicle for more effectively and precisely measuring a charged state of the battery in an electric vehicle The purpose of this paper is to provide

본 발명의 과제들은 이상에서 언급한 과제들로 제한되지 않으며, 언급되지 않은 또 다른 과제들은 아래의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

상기한 목적을 달성하기 위한 본 발명의 전기자동차용 배터리의 충전상태 모니터링방법은, 교류 충전기를 이용하여 전기자동차용 배터리를 충전하는 과정에서의 충전상태 모니터링방법에 있어서, 차량의 초기정보를 입력하는 (a)단계, 차량의 충전이 개시된 시점으로부터, 기 설정된 충전방식전환점까지의 누적충전량을 산출하는 (b)단계 및 상기 누적충전량이 상기 충전방식전환점에 도달한 이후로부터, 상기 차량의 초기정보에 기반하여 기 설정된 분할기준시간 당 충전량을 산출하는 (c)단계를 포함한다.According to another aspect of the present invention, there is provided a method for monitoring a state of charge of a battery for an electric vehicle, the method comprising the steps of: (b) of calculating a cumulative amount of charge from a point of time when the charging of the vehicle is started to a predetermined charging mode switching point, and a step (b) of calculating a cumulative amount of charge And (c) calculating a charge amount per predetermined divided reference time based on the calculated charge amount.

그리고 상기 (a)단계에서 상기 초기정보는, 잔류 배터리량 정보, 배터리 용량 정보, 목표충전량 정보, 차량의 스펙 정보 중 적어도 어느 하나 이상을 포함할 수 있다.In the step (a), the initial information may include at least one of residual battery amount information, battery capacity information, target amount of charge information, and specification information of the vehicle.

또한 상기 (b)단계는, 상기 잔류 배터리량 정보 및 상기 배터리 용량 정보를 통해 상기 충전방식전환점까지의 선행충전량을 기산하고, 차량의 충전을 상기 누적충전량이 상기 선행충전량을 만족할 시점까지 수행하도록 할 수 있다.In the step (b), a preceding charge amount up to the charging mode switching point is calculated through the residual battery amount information and the battery capacity information, and charging of the vehicle is performed until the accumulated charge amount satisfies the preceding charge amount .

그리고 상기 (c)단계는, 상기 누적충전량이 상기 충전방식전환점에 도달한 이후로부터, 상기 목표충전량 정보까지의 후행충전량을 기산하고, 매 분할기준시간의 충전량을 상기 후행충전량으로부터 차감하여 나가는 것으로 할 수 있다.In the step (c), the amount of the following charge to the target charge amount information is calculated after the accumulated charge amount reaches the charge mode switching point, and the charge amount of each divided reference time is subtracted from the amount of the following charge .

또한 상기 (c)단계는, 상기 분할기준시간의 충전량을 통해 상기 후행충전량을 충전하는 데 소요되는 예상시간을 더 산출하는 것으로 할 수 있다.Further, the step (c) may further calculate an expected time required to charge the posterior charged amount through the charged amount of the divided reference time.

그리고 상기 (c)단계는, 매 분할기준시간을 동일한 시간 간격으로 설정하여 수행되는 것으로 할 수 있다.The step (c) may be performed by setting each divided reference time at the same time interval.

또한 상기 (c)단계는, 매 분할기준시간을 동일 충전량 기준으로 설정하여, 상기 분할기준시간은 상기 누적충전량의 증가에 따라 시간 간격이 점차 증가되는 것으로 할 수 있다.In the step (c), the divided reference time may be set based on the same charge amount, and the divided reference time may be gradually increased with an increase in the accumulated charge amount.

상기한 과제를 해결하기 위한 본 발명의 전기자동차용 배터리의 충전상태 모니터링방법은 다음과 같은 효과가 있다.The method for monitoring the state of charge of a battery for an electric vehicle according to the present invention for solving the above problems has the following effects.

첫째, 교류 충전기를 통한 충전 과정에서 발생할 수밖에 없는 충전방식전환점을 고려하여 보다 정밀하고 효과적으로 충전상태를 모니터링할 수 있는 장점이 있다.First, there is an advantage that it is possible to more precisely and effectively monitor the charging state in consideration of the switching point of the charging mode which is inevitable in the charging process through the AC charger.

둘째, 이에 따라 차량의 배터리 관리를 보다 효과적으로 수행하고, 기대 수명을 보다 향상시킬 수 있는 장점이 있다.Secondly, there is an advantage that the battery management of the vehicle can be performed more effectively and the life expectancy can be further improved.

셋째, 종래에 비해 간단하고 합리적인 방식으로 충전상태를 모니터링함에 따라 하드웨어 및 소프트웨어의 개발 비용을 크게 절감할 수 있는 장점이 있다.Third, there is an advantage that the development cost of hardware and software can be greatly reduced by monitoring the charging state in a simple and reasonable manner as compared with the conventional method.

본 발명의 효과들은 이상에서 언급한 효과들로 제한되지 않으며, 언급되지 않은 또 다른 효과들은 청구범위의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

도 1은 본 발명의 일 실시예에 따른 전기자동차용 배터리의 충전상태 모니터링방법의 각 단계를 나타낸 도면;
도 2는 본 발명의 일 실시예에 따른 전기자동차용 배터리의 충전상태 모니터링방법에 있어서, 입력되는 차량의 초기정보에 포함된 정보들을 나열한 도면;
도 3은 교류 충전기를 이용하여 충전하는 과정에서 시간에 따른 전류 변화량을 나타낸 그래프;
도 4는 교류 충전기를 이용하여 충전하는 과정에서, 분할기준시간을 동일한 시간 간격으로 설정한 상태를 나타낸 그래프; 및
도 5는 교류 충전기를 이용하여 충전하는 과정에서, 분할기준시간을 동일 충전량 기준으로 설정한 상태를 나타낸 그래프이다.Brief Description of the Drawings FIG. 1 is a diagram illustrating a method for monitoring a state of charge of a battery for an electric vehicle according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method of monitoring a charged state of a battery for an electric vehicle according to an exemplary embodiment of the present invention, which includes information included in initial information of an input vehicle; FIG.
3 is a graph showing the amount of current change with time in the process of charging using the AC charger;
4 is a graph showing a state in which a division reference time is set at the same time interval in a process of charging using an AC charger; And
5 is a graph showing a state in which the division reference time is set to the same charging amount reference in the process of charging using the AC charger.

이하 본 발명의 목적이 구체적으로 실현될 수 있는 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 본 실시예를 설명함에 있어서, 동일 구성에 대해서는 동일 명칭 및 동일 부호가 사용되며 이에 따른 부가적인 설명은 생략하기로 한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

그리고 발명의 배경이 되는 기술 부분에서도 설명한 바와 같이, 전기자동차의 교류 충전 방식 충전기의 경우 그 특성 상 직류 방식 충전기와 달리 차량과의 통신을 수행할 수 없어 현재 차량의 배터리 충전 상태를 직접적으로 측정하는 것이 불가능하며, 본원발명은 이와 같은 교류 충전기를 이용하여 전기자동차용 배터리를 충전하는 과정에서의 충전상태를 정밀하고 효과적으로 모니터링하기 위한 것을 전제로 한다.As described in the technical section of the background of the invention, unlike a direct-current type charger, an AC charging type charger of an electric vehicle can not communicate with a vehicle, thereby directly measuring the battery charging state of the current vehicle And the present invention is premised on precisely and effectively monitoring the state of charge in the process of charging the battery for an electric vehicle by using such an AC charger.

도 1은 본 발명의 일 실시예에 따른 전기자동차용 배터리의 충전상태 모니터링방법의 각 단계를 나타낸 도면이다.FIG. 1 is a flowchart illustrating a method of monitoring a charged state of a battery for an electric vehicle according to an embodiment of the present invention. Referring to FIG.

도 1에 도시된 바와 같이, 본 발명의 일 실시예에 따른 전기자동차용 배터리의 충전상태 모니터링방법은, 차량의 초기정보를 입력하는 (a)단계와, 차량의 충전이 개시된 시점으로부터, 기 설정된 충전방식전환점까지의 누적충전량을 산출하는 (b)단계와, 상기 누적충전량이 상기 충전방식전환점에 도달한 이후로부터, 상기 차량의 초기정보에 기반하여 기 설정된 분할기준시간 당 충전량을 산출하는 (c)단계를 포함한다.As shown in FIG. 1, a method for monitoring a state of charge of a battery for an electric vehicle according to an embodiment of the present invention includes: (a) inputting initial information of a vehicle; (B) calculating a cumulative amount of charge up to the charging mode switching point, calculating a charging amount per predetermined divided reference time based on the initial information of the vehicle after the cumulative amount of charging reaches the charging mode switching point (c ).

상기 (a)단계는 이후 각 단계에서 충전상태를 정밀하게 모니터링할 수 있도록 기반이 되는 초기정보들을 입력하는 단계로서, 본 단계는 수동 또는 자동으로 수행될 수 있다.The step (a) may be performed manually or automatically by inputting initial information as a basis for finely monitoring the state of charge in each step thereafter.

이때 상기 차량의 초기정보는 차량의 다양한 상태를 알 수 있는 복수의 정보들을 포함할 수 있으며, 예컨대 상기 초기정보는 도 2에 도시된 바와 같이 잔류 배터리량 정보, 배터리 용량 정보, 목표충전량 정보, 차량의 스펙 정보 중 적어도 어느 하나 이상을 포함할 수 있다.In this case, the initial information of the vehicle may include a plurality of pieces of information that can indicate various states of the vehicle. For example, the initial information may include residual battery amount information, battery capacity information, And the specification information of the image processing apparatus.

구체적으로 상기 잔류 배터리량 정보는 현재 차량에 구비된 배터리의 남은 용량 정보이며, 상기 배터리 용량 정보는 현재 차량에 구비된 배터리의 최대 용량 정보이고, 상기 목표충전량 정보는 사용자가 의도하여 목표로 정하고 있는 충전량 정보이다. 또한 상기 차량의 스펙 정보는 상기 차량을 구성하는 다양한 구성들에 대한 정보일 수 있다. 이는 상기 차량의 스펙에 따라 충전량이 변화될 수 있기 때문이다. Specifically, the residual battery amount information is residual capacity information of the battery currently installed in the vehicle, the battery capacity information is the maximum capacity information of the battery currently installed in the vehicle, and the target charge amount information is a target Charge information. The specification information of the vehicle may be information on various configurations of the vehicle. This is because the charge amount can be changed according to the specification of the vehicle.

이와 같이 차량의 초기정보를 입력한 후 충전을 개시하게 되며, 이후 차량의 충전이 개시된 시점으로부터, 기 설정된 충전방식전환점까지의 누적충전량을 산출하는 (b)단계와, 상기 누적충전량이 상기 충전방식전환점(C)에 도달한 이후로부터, 상기 차량의 초기정보에 기반하여 기 설정된 분할기준시간 당 충전량을 산출하는 (c)단계가 수행된다.(B) calculating a cumulative amount of charge from a point of time at which charging of the vehicle is started to a preset charging mode switching point after charging the initial information of the vehicle as described above, (C) is performed to calculate the charge amount per predetermined divided reference time based on the initial information of the vehicle after the turning point C is reached.

상기 충전방식전환점이라 함은, 교류 충전기의 특성에 따라 충전 방식이 정전류 충전 방식에서 정전압 충전 방식으로 전환되는 시점을 말한다.The charging mode switching point refers to a time point at which the charging mode is switched from the constant current charging mode to the constant voltage charging mode according to the characteristics of the AC charger.

즉 도 3에 도시된 바와 같이, 차량의 배터리의 현재 잔류 용량을 기준으로 하여 기 설정된 시점, 즉 충전방식전환점(C)까지는 정전류 충전 방식을 통해 일정한 전류량으로 충전을 수행하며, 충전방식전환점(C) 이후에는 정전압 충전 방식을 통해 일정한 전압을 유지하도록 하며 충전을 수행하게 된다. 충전방식전환점(C) 이후에는, 정전압을 유지함에 따라 충전에 소요되는 전류량은 점차 감소하게 된다.That is, as shown in FIG. 3, charging is performed at a predetermined current amount through a constant current charging method until a predetermined time, that is, a charging mode switching point C, based on the current residual capacity of the battery of the vehicle, ), The constant voltage is maintained through the constant voltage charging method and the charging is performed. After the charging mode switching point (C), the amount of current required for charging gradually decreases as the constant voltage is maintained.

여기서 상기 충전방식전환점은 차량의 배터리 제조 과정에서 임의로 정해질 수 있으며, 이는 배터리의 종류 및 배터리가 장착될 차량 등을 고려하여 설정될 수 있다.Here, the charging mode switching point may be determined arbitrarily in the battery manufacturing process of the vehicle, and may be set in consideration of the type of the battery and the vehicle to which the battery is to be mounted.

종래의 경우, 교류 충전기의 특성 상 차량과의 통신을 수행할 수 없어, 충전방식전환점(C) 이후 현재 차량의 배터리 충전 상태를 측정하기가 어렵다는 문제가 있었다.In the conventional case, communication with the vehicle can not be performed due to the characteristics of the AC charger, and it is difficult to measure the battery charging state of the present vehicle after the charging mode switching point (C).

본 발명의 경우, 상기와 같은 문제점을 해결하기 위해 상기 (b)단계에서 상기 초기정보에 포함된 복수의 정보 중 상기 잔류 배터리량 정보 및 상기 배터리 용량 정보를 통해 상기 충전방식전환점(C)까지의 선행충전량을 기산하고, 차량의 충전을 상기 누적충전량이 상기 선행충전량을 만족할 시점까지 수행함에 따라 상기 충전방식전환점(C)까지의 충전을 수행한다.In the case of the present invention, in order to solve the above problem, in the step (b), among the plurality of pieces of information included in the initial information, the remaining battery amount information and the battery capacity information, And carries out the charging up to the charging mode switching point (C) as the charging of the vehicle is performed until the accumulated charging amount satisfies the preceding charging amount.

그리고, 상기 (c)단계에서는 상기 누적충전량이 상기 충전방식전환점(C)에 도달한 이후로부터, 상기 초기정보에 포함된 정보 중 상기 목표충전량 정보까지의 후행충전량을 미리 기산하고, 매 분할기준시간의 충전량을 상기 후행충전량으로부터 차감하여 나가는 것으로 할 수 있다.In the step (c), a post-charge amount up to the target charge amount information among information included in the initial information is calculated in advance after the accumulated charge amount reaches the charge mode switching point (C) It is possible to subtract the charged amount of the battery from the amount of the following charged amount.

즉 누적충전량이 상기 충전방식전환점(C)에 도달한 이후부터는 상기 초기정보에 기반하여, 상기 충전방식전환점(C) 이후 정전압을 유지함에 따라 충전에 소요되는 전류량은 감소된다는 점을 고려하여 임의로 분할한 분할기준시간 당 충전량을 산출할 수 있다.That is, after the accumulated charge amount reaches the charging mode switching point (C), the amount of current required for charging is reduced as the constant voltage is maintained after the charging mode switching point (C) based on the initial information. It is possible to calculate the charge amount per divided reference time.

특히 본 발명은 상기 분할기준시간의 충전량을 통해 상기 후행충전량을 충전하는 데 소요되는 예상시간을 더 산출하도록 하여, 목표충전량, 현재 누적충전량, 소요 예상시간 등을 디스플레이하도록 할 수도 있다.Particularly, the present invention may further calculate the estimated time required to charge the posterior charged amount through the charged amount of the divided reference time, thereby displaying the target charged amount, the current accumulated charged amount, the estimated expected time, and the like.

한편 상기 (c)단계의 경우, 상기 분할기준시간을 다양한 기준을 통해 분할한 후 충전을 수행하도록 할 수 있다.Meanwhile, in the step (c), the division reference time may be divided through various criteria and then charged.

먼저, 본 발명은 도 4에 도시된 바와 같이 상기 충전방식전환점(C) 이후 매 분할기준시간을 동일한 시간 간격으로 설정하여 수행되는 것으로 할 수 있다.First, as shown in FIG. 4, the present invention can be performed by setting every division reference time after the charging mode change point C at the same time interval.

이와 같은 경우 상기 충전방식전환점(C) 이후의 잔류시간을 1/n로 균등히 분할하여, 매 시점(t1~t4)마다 목표충전량, 현재 누적충전량, 소요 예상시간 등을 산출하고 디스플레이할 수 있다.In this case, the remaining time after the charging mode switching point C is divided equally into 1 / n, and the target charging amount, the current accumulated charging amount, the estimated expected time, etc. can be calculated and displayed at every time point t1 to t4.

또 다른 방법으로서, 본 발명은 도 5에 도시된 바와 같이 상기 충전방식전환점(C) 이후 매 분할기준시간을 동일 충전량 기준으로 설정할 수도 있다. 이와 같은 경우 상기 분할기준시간은 상기 누적충전량이 증가할수록 매 시점(t1~t4) 간의 시간 간격이 점차 증가될 것이다.As another method, the present invention may set each divided reference time after the charging mode switching point (C) based on the same charging amount as shown in FIG. In this case, the time interval between the time points t1 and t4 will gradually increase as the accumulated charge amount increases.

즉 이와 같은 방식은 상기 충전방식전환점(C) 이후 목표충전량까지의 잔류 충전량을 1/n로 균등히 분할하여, 일정한 충전량이 충전되는 매 시점(t1~t4)마다 목표충전량, 현재 누적충전량, 소요 예상시간 등을 산출하고 디스플레이할 수 있다.That is, in this method, the residual charge amount up to the target charge amount after the charge mode switching point C is equally divided into 1 / n, and the target charge amount, the present accumulated charge amount, Time and the like can be calculated and displayed.

이상과 같이 본 발명에 따른 바람직한 실시예를 살펴보았으며, 앞서 설명된 실시예 이외에도 본 발명이 그 취지나 범주에서 벗어남이 없이 다른 특정 형태로 구체화될 수 있다는 사실은 해당 기술에 통상의 지식을 가진 이들에게는 자명한 것이다. 그러므로, 상술된 실시예는 제한적인 것이 아니라 예시적인 것으로 여겨져야 하고, 이에 따라 본 발명은 상술한 설명에 한정되지 않고 첨부된 청구항의 범주 및 그 동등 범위 내에서 변경될 수도 있다. It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

Claims (7)

교류 충전기를 이용하여 전기자동차용 배터리를 충전하는 과정에서의 충전상태 모니터링방법에 있어서,
차량의 초기정보를 입력하는 (a)단계;
차량의 충전이 개시된 시점으로부터, 기 설정된 충전방식전환점까지의 누적충전량을 산출하는 (b)단계; 및
상기 누적충전량이 상기 충전방식전환점에 도달한 이후로부터, 상기 차량의 초기정보에 기반하여 기 설정된 분할기준시간 당 충전량을 산출하되, 목표충전량 정보까지의 후행충전량을 기산하고, 상기 분할기준시간은 상기 누적충전량의 증가에 따라 시간 간격이 점차 증가되도록 하여 매 분할기준시간의 충전량을 상기 후행충전량으로부터 차감하여 나가는 것으로 하는 (c)단계;
를 포함하는 전기자동차용 배터리의 충전상태 모니터링 방법.
A method for monitoring a state of charge in a process of charging an electric vehicle battery using an AC charger,
(A) inputting initial information of the vehicle;
(B) calculating an accumulated charge amount from a point of time when the charging of the vehicle is started to a predetermined charging mode switching point; And
Calculating a charging amount per predetermined divided reference time based on the initial information of the vehicle after the accumulated charging amount reaches the charging mode switching point, calculating a following charging amount up to the target charging amount information, (C) a step of gradually increasing the time interval according to the increase of the cumulative amount of charge so as to subtract the amount of charge of each divided reference time from the amount of the following amount of charge;
And monitoring the state of charge of the battery for an electric vehicle.
제1항에 있어서,
상기 (a)단계에서 상기 초기정보는,
잔류 배터리량 정보, 배터리 용량 정보, 목표충전량 정보, 차량의 스펙 정보 중 적어도 어느 하나 이상을 포함하는 전기자동차용 배터리의 충전상태 모니터링방법.
The method according to claim 1,
In the step (a), the initial information may include:
A remaining battery amount information, a battery capacity information, a target charging amount information, and a specification information of the vehicle.
제1항에 있어서,
상기 (b)단계는,
잔류 배터리량 정보 및 배터리 용량 정보를 통해 충전방식전환점까지의 선행충전량을 기산하고, 차량의 충전을 누적충전량이 상기 선행충전량을 만족할 시점까지 수행하도록 하는 전기자동차용 배터리의 충전상태 모니터링 방법.
The method according to claim 1,
The step (b)
Calculating a preceding charging amount up to a charging mode switching point through the remaining battery amount information and the battery capacity information and performing the charging of the vehicle until the accumulated charging amount satisfies the preceding charging amount.
삭제delete 삭제delete 삭제delete 삭제delete
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