KR20220095515A - Selectively charging method for battery cell - Google Patents

Selectively charging method for battery cell Download PDF

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KR20220095515A
KR20220095515A KR1020200187111A KR20200187111A KR20220095515A KR 20220095515 A KR20220095515 A KR 20220095515A KR 1020200187111 A KR1020200187111 A KR 1020200187111A KR 20200187111 A KR20200187111 A KR 20200187111A KR 20220095515 A KR20220095515 A KR 20220095515A
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charging
battery
battery cell
management system
cell
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KR1020200187111A
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Korean (ko)
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KR102659303B1 (en
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김창인
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주식회사 솔루엠
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using 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

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The present invention relates to a method for selectively charging a battery cell. According to an embodiment of the present invention, when the voltage of a specific battery cell among a plurality of battery cells drops, unbalancing between the plurality of battery cells is prevented by charging only the specific battery cell.

Description

배터리셀의 선택적 충전 방법{SELECTIVELY CHARGING METHOD FOR BATTERY CELL}Method of selective charging of battery cells

본 발명은 배터리셀의 선택적 충전 방법에 관한 것이다.The present invention relates to a method for selectively charging a battery cell.

최근 전기자동차에 대한 기술개발이 활발히 이뤄지고 있다.Recently, technology development for electric vehicles has been actively carried out.

전기자동차의 부품 중 가장 핵심이 되는 부품은 배터리라 할 수 있는데, 배터리를 관리하는 시스템을 일반적으로 배터리관리시스템(Battery Management System, BMS)이라 일컫는다.The most core part of an electric vehicle is a battery, and the battery management system is generally called a Battery Management System (BMS).

배터리관리시스템은 배터리팩(Battery Pack)의 전압, 전류, 온도 등을 모니터링하여 최적의 상태로 유지 및 관리하고, 배터리의 교체 시기 예측 및 배터리 문제를 사전에 발견하는 중요한 역할을 담당한다.The battery management system monitors the voltage, current, and temperature of the battery pack, maintains and manages it in an optimal state, and plays an important role in predicting battery replacement time and detecting battery problems in advance.

배터리팩, 배터리모듈, 배터리셀에 대한 일반적인 정의는 다음과 같다.The general definitions of battery packs, battery modules, and battery cells are as follows.

- 배터리셀 : 전기에너지를 충전 또는 방전해 사용할 수 있는 리튬이온 배터리의 기본 단위, 양극, 음극, 분리막, 전해액을 사각형의 알루미늄 케이스에 넣어 만듬- Battery cell: The basic unit of a lithium-ion battery that can be used by charging or discharging electrical energy, positive electrode, negative electrode, separator, and electrolyte are put in a rectangular aluminum case

- 배터리모듈 : 배터리셀을 외부충격과 열, 진동 등으로부터 보호하기 위해 일정한 개수로 묶어 프레임에 넣은 배터리 조합체- Battery module: A battery assembly that is bundled in a certain number and placed in a frame to protect the battery cells from external shock, heat, and vibration.

- 배터리팩 : 전기자동차에 장착되는 배터리 시스템의 최종 형태, 배터리 모듈에 BMS, 냉각시스템 등 각종 제어 및 보호 시스템을 장착하여 완성함- Battery pack: The final form of the battery system installed in an electric vehicle, completed by installing various control and protection systems such as BMS and cooling system in the battery module

한편, 배터리관리시스템의 핵심 역할은 에너지의 효율을 높이고 배터리의 수명을 연장시키는 것이다.Meanwhile, the core role of the battery management system is to increase energy efficiency and extend the life of the battery.

일반적으로 배터리팩 내부에는 다수의 배터리셀이 장착되어 있는데, 이러한 배터리셀 사이에 밸런싱이 맞지 않게 되면 배터리팩이 갖고 있는 최대 에너지를 활용하기 어렵다.In general, a plurality of battery cells are mounted inside a battery pack. If the balance between these battery cells is not met, it is difficult to utilize the maximum energy of the battery pack.

따라서, 복수개의 배터리셀 중 특정 배터리셀의 전압이 낮아지는 등 언밸런싱이 발생한 경우, 해당 특정 배터리셀만을 선택적으로 충전할 수 있는 기술의 개발이 요구된다.Therefore, when unbalance occurs, such as when the voltage of a specific battery cell among a plurality of battery cells is lowered, it is required to develop a technology capable of selectively charging only the specific battery cell.

한편, 종래 배터리셀의 선택적 충방전 기술과 관련하여, 한국등록특허 제10-1377321호에 '배터리셀을 선택하여 충방전 가능한 배터리팩과 휴대용전자기기, 배터리의 방전 제어방법 그리고 배터리의 충전제어방법'이 기재되어 있다.Meanwhile, in relation to the conventional selective charging/discharging technology of battery cells, Korean Patent Registration No. 10-1377321 states that 'a battery pack and portable electronic devices capable of charging and discharging by selecting a battery cell, a method for controlling the discharge of a battery, and a method for controlling a charge of a battery ' is described.

이에 본 발명은 전술한 배경에서 안출된 것으로, 복수개의 배터리셀 중 특정 배터리셀의 전압이 떨어진 경우, 해당 특정 배터리셀만을 충전함으로써, 복수개의 배터리셀 간 언밸런싱이 발생하는 것을 방지할 수 있는 배터리셀의 선택적 충전 방법을 제공하는데 그 목적이 있다.Accordingly, the present invention has been devised in the background described above, and when the voltage of a specific battery cell among a plurality of battery cells drops, only the specific battery cell is charged, thereby preventing unbalance between the plurality of battery cells from occurring. An object of the present invention is to provide a method for selectively charging a cell.

본 발명의 목적은 여기에 제한되지 않으며, 언급되지 않은 또 다른 목적들은 아래의 기재로부터 통상의 기술자에게 명확하게 이해될 수 있을 것이다.The object of the present invention is not limited thereto, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

이러한 목적을 달성하기 위하여 본 발명의 일실시예는 배터리셀의 선택적 충전 방법에 있어서, (a) 배터리관리시스템의 배터리상태판단부가, 복수개의 배터리셀 각각의 전압을 측정하여, 기설정된 기준전압 이하인 충전대상배터리셀을 선정하는 단계; (b) 상기 배터리관리시스템의 충전모듈제어부가, 상기 복수개의 배터리셀 각각에 전기적으로 연결된 충전모듈들 중, 상기 충전대상배터리셀에 전기적으로 연결된 충전모듈을 작동하여 상기 충전대상배터리셀을 충전하는 단계; 및 (c) 상기 배터리관리시스템의 상기 배터리상태판단부가, 충전되는 상기 충전대상배터리셀의 정상충전여부를 판단하는 단계;를 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법을 제공한다.In order to achieve this object, an embodiment of the present invention provides a method for selectively charging a battery cell, (a) the battery state determining unit of the battery management system measures the voltage of each of a plurality of battery cells, and is less than or equal to a preset reference voltage. selecting a charging target battery cell; (b) the charging module control unit of the battery management system operates a charging module electrically connected to the charging target battery cell among the charging modules electrically connected to each of the plurality of battery cells to charge the charging target battery cell step; and (c) determining, by the battery state determining unit of the battery management system, whether the charging target battery cell is normally charged.

또한, (d) 상기 충전대상배터리셀의 충전이 완료된 경우, 상기 배터리관리시스템의 상기 충전모듈제어부가, 상기 충전대상배터리셀에 전기적으로 연결된 상기 충전모듈의 작동을 중지시키는 단계;를 더 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법을 제공한다.In addition, (d) when the charging of the charging target battery cell is completed, the charging module control unit of the battery management system, the step of stopping the operation of the charging module electrically connected to the charging target battery cell; further comprising It provides a method for selectively charging a battery cell, characterized in that.

또한, (e) 상기 배터리관리시스템의 통신부가, 상기 충전대상배터리셀에 대한 충전완료알림신호를 관리자단말기로 전송하는 단계;를 더 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법을 제공한다.In addition, (e) transmitting, by the communication unit of the battery management system, a charging completion notification signal for the charging target battery cell to the manager terminal; provides a selective charging method of the battery cell, characterized in that it further comprises.

또한, 상기 (e) 상기 배터리관리시스템의 상기 배터리상태판단부가, 충전이 완료된 상기 충전대상배터리셀의 정상상태 여부를 판단하는 단계;를 더 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법을 제공한다.In addition, the (e) the battery state determining unit of the battery management system, the step of determining whether the normal state of the charging target battery cell that has been charged; Provides a method for selectively charging a battery cell, characterized in that it further comprises do.

본 발명의 일실시예에 의하면, 복수개의 배터리셀 중 특정 배터리셀의 전압이 떨어진 경우, 해당 특정 배터리셀만을 충전함으로써, 복수개의 배터리셀 간 언밸런싱이 발생하는 것을 방지할 수 있는 효과가 있다.According to an exemplary embodiment of the present invention, when the voltage of a specific battery cell among a plurality of battery cells drops, only the specific battery cell is charged, thereby preventing unbalance between the plurality of battery cells from occurring.

도 1은 본 발명의 일실시예에 따른 배터리셀의 선택적 충전 방법을 나타낸 블럭도이다.
도 2 내지 도 4는 본 발명의 일실시예에 따른 배터리셀의 선택적 충전 방법을 나타낸 순서도이다.1 is a block diagram illustrating a method for selectively charging a battery cell according to an embodiment of the present invention.
2 to 4 are flowcharts illustrating a method for selectively charging a battery cell according to an embodiment of the present invention.

이하, 본 발명의 일부 실시예들을 예시적인 도면을 통해 상세하게 설명한다. 각 도면의 구성요소들에 참조부호를 부가함에 있어서, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 부호를 가지도록 하고 있음에 유의해야 한다. 또한, 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다.Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

또한, 본 발명의 구성 요소를 설명하는 데 있어서, 제 1, 제 2, A, B, (a), (b) 등의 용어를 사용할 수 있다. 이러한 용어는 그 구성 요소를 다른 구성 요소와 구별하기 위한 것일 뿐, 그 용어에 의해 해당 구성 요소의 본질이나 차례 또는 순서 등이 한정되지 않는다. 어떤 구성 요소가 다른 구성요소에 "연결", "결합" 또는 "접속"된다고 기재된 경우, 그 구성 요소는 그 다른 구성요소에 직접적으로 연결되거나 또는 접속될 수 있지만, 각 구성 요소 사이에 또 다른 구성 요소가 "연결", "결합" 또는 "접속"될 수도 있다고 이해되어야 할 것이다.In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It should be understood that elements may also be “connected,” “coupled,” or “connected.”

도 1은 본 발명의 일실시예에 따른 배터리셀의 선택적 충전 방법을 나타낸 블럭도이다. 도 2 내지 도 4는 본 발명의 일실시예에 따른 배터리셀의 선택적 충전 방법을 나타낸 순서도이다.1 is a block diagram illustrating a method for selectively charging a battery cell according to an embodiment of the present invention. 2 to 4 are flowcharts illustrating a method for selectively charging a battery cell according to an embodiment of the present invention.

이들 도면들에 도시된 바와 같이, 본 발명의 일실시예에 따른 배터리셀의 선택적 충전 방법은, (a) 배터리관리시스템(101)의 배터리상태판단부(103)가, 복수개의 배터리셀(105-1~105-n, n은 2 이상의 자연수) 각각의 전압(V)을 측정하여, 기설정된 기준전압 이하인 충전대상배터리셀(105')을 선정하는 단계; (b) 배터리관리시스템(101)의 충전모듈제어부(107)가, 복수개의 배터리셀(105-1~105-n) 각각에 전기적으로 연결된 충전모듈들(109-1~109-n, n은 2 이상의 자연수) 중, 충전대상배터리셀(105')에 전기적으로 연결된 충전모듈(109')을 작동하여 충전대상배터리셀(105')을 충전하는 단계; 및 (c) 배터리관리시스템(101)의 배터리상태판단부(103)가, 충전되는 충전대상배터리셀(105')의 정상충전여부를 판단하는 단계;를 포함하는 것을 특징으로 한다.As shown in these figures, in the method for selectively charging battery cells according to an embodiment of the present invention, (a) the battery state determining unit 103 of the battery management system 101 includes a plurality of battery cells 105 -1 to 105-n, n is a natural number greater than or equal to 2) measuring each voltage (V), and selecting a charging target battery cell 105 ′ that is less than or equal to a preset reference voltage; (b) the charging module control unit 107 of the battery management system 101, the charging modules 109-1 to 109-n, n electrically connected to each of the plurality of battery cells 105-1 to 105-n (a natural number equal to or greater than 2), charging the charging target battery cell 105' by operating the charging module 109' electrically connected to the charging target battery cell 105'; and (c) determining, by the battery state determination unit 103 of the battery management system 101, whether the charging target battery cell 105' to be charged is normally charged.

이하, 각 단계별로 설명한다.Hereinafter, each step will be described.

먼저, (a) 단계는, 배터리관리시스템(101)의 배터리상태판단부(103)가, 복수개의 배터리셀(105-1~105-n) 각각의 전압(V)을 측정하여, 기설정된 기준전압 이하인 특정 충전대상배터리셀(105')을 선정하는 단계이다.First, in step (a), the battery state determination unit 103 of the battery management system 101 measures the voltage V of each of the plurality of battery cells 105-1 to 105-n, and a preset standard This is a step of selecting a specific charging target battery cell 105 ′ that is less than or equal to the voltage.

배터리관리시스템(101)은 BMS(Battery Management System)로 지칭되는데, 배터리관리시스템(101)은 배터리의 전압, 전류, 온도 등을 실시간으로 관리하여 관리 현황을 관리자에게 즉각적으로 전송함으로써, 배터리에서 발생할 수 있는 문제를 방지하고, 배터리의 안전성과 수명을 높여주는 시스템을 말한다.The battery management system 101 is referred to as a BMS (Battery Management System), and the battery management system 101 manages the voltage, current, temperature, etc. of the battery in real time and immediately transmits the management status to the administrator, thereby generating It is a system that prevents possible problems and increases the safety and lifespan of the battery.

배터리상태판단부(103)는, 복수개의 배터리셀(105-1~105-n) 각각의 전압(V)을 실시간으로 측정한다.The battery state determination unit 103 measures the voltage V of each of the plurality of battery cells 105-1 to 105-n in real time.

물론, 배터리상태판단부(103)는, 배터리셀(105-1~105-n) 각각의 전압(V)을 기설정된 시간간격 단위로 측정할 수도 있다.Of course, the battery state determining unit 103 may measure the voltage V of each of the battery cells 105-1 to 105-n in units of preset time intervals.

이러한 배터리상태판단부(103)는, 각각 전압(V)이 측정된 배터리셀(105-1~105-n) 중 기설정된 기준전압 이하인 충전대상배터리셀(105')을 선정한다.The battery state determining unit 103 selects a charging target battery cell 105 ′ that is less than or equal to a preset reference voltage from among the battery cells 105-1 to 105-n whose voltage V is measured, respectively.

이어서, (b) 단계는, 배터리관리시스템(101)의 충전모듈제어부(107)가, 복수개의 배터리셀(105-1~105-n) 각각에 전기적으로 연결된 충전모듈들(109-1~109-n, n은 2 이상의 자연수) 중, 충전대상배터리셀(105')에 전기적으로 연결된 충전모듈(109')을 작동하여 충전대상배터리셀(105')을 충전하는 단계이다.Subsequently, in step (b), the charging module control unit 107 of the battery management system 101 is electrically connected to each of the plurality of battery cells 105-1 to 105-n, the charging modules 109-1 to 109 -n, n is a natural number greater than or equal to 2), it is a step of charging the charging target battery cell 105' by operating the charging module 109' electrically connected to the charging target battery cell 105'.

좀 더 구체적으로, 배터리관리시스템(101)의 충전모듈제어부(107)는, 충전대상배터리셀(105')에 전기적으로 연결된 충전모듈(109')로 작동개시신호(S1)를 전송하여, 충전모듈(109')의 충전대상배터리셀(105') 충전 기능을 활성화시킨다.More specifically, the charging module control unit 107 of the battery management system 101 transmits an operation start signal S1 to the charging module 109 ′ electrically connected to the charging target battery cell 105 ′ to charge, The charging function of the charging target battery cell 105' of the module 109' is activated.

여기서, 충전모듈(109')은, 일예로, 외부전원으로부터 전류를 인가받아 스위치 작동에 의해 충전대상배터리셀(105')을 충전 또는 충전중지하는 구조로 이뤄질 수 있으며, 충전모듈제어부(107)는, 충전모듈(109')의 스위치를 ON하는 작동개시신호(S1)를 충전모듈(109')로 인가하여 충전모듈(109')의 충전 기능을 활성화시킬 수 있다.Here, the charging module 109 ′ may have a structure in which, for example, a current is applied from an external power source and the charging target battery cell 105 ′ is charged or stopped by a switch operation, and the charging module control unit 107 . may apply the operation start signal S1 for turning on the switch of the charging module 109' to the charging module 109' to activate the charging function of the charging module 109'.

이어서, (c) 단계는, 배터리관리시스템(101)의 배터리상태판단부(103)가, 충전되는 충전대상배터리셀(105')의 정상충전여부를 판단하는 단계이다.Next, step (c) is a step in which the battery state determining unit 103 of the battery management system 101 determines whether the charging target battery cell 105 ′ is normally charged.

여기서, 배터리상태판단부(103)는, 상술한 충전대상배터리셀(105')의 정상충전여부 판단시, 동일한 제조사가 동일한 시기(시점)에 생산한 배터리셀들을 대상으로, 충전 개시 시점의 전압값에서 기측정된 충전대상배터리셀(105')의 온도, 충전속도 관련 레퍼런스데이터(RD)를 기준으로 비교판단하여, 충전대상배터리셀(105')의 정상충전여부를 판단할 수 있다.Here, the battery state determining unit 103 is, when determining whether the above-described charging target battery cell 105 ′ is normally charged, the battery cells produced by the same manufacturer at the same time (time point), the voltage at the start of charging It is possible to determine whether the charging target battery cell 105 ′ is normally charged by comparing and judging the temperature and charging speed related reference data RD of the charging target battery cell 105 ′ measured from the value.

이 때, 상술한 레퍼런스데이터(RD)는, 상술한 제조사의 서버(111)가 배터리관리시스템(101)으로 전송한 데이터일 수 있다.In this case, the above-described reference data RD may be data transmitted by the server 111 of the above-described manufacturer to the battery management system 101 .

한편, 본 발명의 일실시예에 따른 배터리셀의 선택적 충전 방법은, (d) 충전대상배터리셀(105')의 충전이 완료된 경우, 배터리관리시스템(101)의 충전모듈제어부(107)가, 충전대상배터리셀(105')에 전기적으로 연결된 충전모듈(109')의 작동을 중지시키는 단계;를 더 포함한다.On the other hand, in the selective charging method of the battery cell according to an embodiment of the present invention, (d) when the charging of the charging target battery cell 105' is completed, the charging module control unit 107 of the battery management system 101, It further includes; stopping the operation of the charging module 109' electrically connected to the charging target battery cell 105'.

좀 더 구체적으로, 배터리관리시스템(101)의 충전모듈제어부(107)는, 충전대상배터리셀(105')의 충전이 완료된 경우(기설정된 완충전압값 이상이 된 경우), 충전대상배터리셀(105')과 전기적으로 연결된 충전모듈(109')로 작동중지신호(S2)를 전송하여, 충전모듈(109')의 충전대상배터리셀(105') 충전 기능을 중지시킨다.More specifically, the charging module control unit 107 of the battery management system 101, when the charging of the charging target battery cell 105 ′ is completed (when it becomes greater than or equal to a preset buffer voltage value), the charging target battery cell ( 105') and the charging module 109' electrically connected to the operation stop signal S2 is transmitted to stop the charging function of the charging target battery cell 105' of the charging module 109'.

여기서, 충전모듈제어부(107)는, 상술한 충전모듈(109')의 스위치를 OFF하는 작동중지신호(S2)를 충전모듈(109')로 인가하여 충전모듈(109')의 충전 기능을 중지시킬 수 있다.Here, the charging module control unit 107 applies the operation stop signal S2 for turning off the switch of the charging module 109 ′ described above to the charging module 109 ′ to stop the charging function of the charging module 109 ′. can do it

한편, 본 발명의 일실시예에 따른 배터리셀의 선택적 충전 방법은, (e) 배터리관리시스템(101)의 통신부(113)가, 충전대상배터리셀(105')에 대한 충전완료알림신호(CA)를 관리자단말기(115)로 전송하는 단계;를 더 포함한다.On the other hand, in the selective charging method of the battery cell according to an embodiment of the present invention, (e) the communication unit 113 of the battery management system 101, the charging completion notification signal (CA) for the charging target battery cell 105' ) to the manager terminal 115; it further includes.

여기서, 통신부(113)가 관리자단말기(115)와 통신하는 방식은 유선 또는 무선통신 방식 모두 가능하다.Here, the communication unit 113 may communicate with the manager terminal 115 in a wired or wireless communication method.

아울러, 충전완료알림신호(CA)를 전송받는 관리자단말기(115)는, 일예로, 스마트폰, 태블릿 PC, 워크스테이션, 웨어러블 디바이스 등 다양하게 제공될 수 있다.In addition, the manager terminal 115 receiving the charging completion notification signal CA may be provided in various ways, such as, for example, a smart phone, a tablet PC, a workstation, a wearable device, and the like.

한편, 본 발명의 일실시예에 따른 배터리셀의 선택적 충전 방법은, 상술한 (d) 단계 이후, (e) 배터리관리시스템(101)의 배터리상태판단부(103)가, 충전이 완료된 충전대상배터리셀(105')의 정상상태 여부를 판단하는 단계;를 더 포함한다.On the other hand, in the selective charging method of a battery cell according to an embodiment of the present invention, after the above-described step (d), (e) the battery state determining unit 103 of the battery management system 101, the charging target is charged It further includes; determining whether the battery cell 105' is in a normal state.

여기서, 배터리상태판단부(103)는, 충전이 완료된 충전대상배터리셀(105')의 정상상태 여부 판단시, 동일한 제조사가 동일한 시기(시점)에 생산한 배터리셀들을 대상으로, 충전 완료 시점의 전압값에서 기측정된 충전대상배터리셀(105')의 온도, 방전속도 관련 레퍼런스데이터(RD')를 기준으로 비교판단하여, 충전대상배터리셀(105')의 정상상태 여부를 판단할 수 있다.Here, when determining whether the charging target battery cell 105 ′ is in a normal state, the battery state determining unit 103 determines whether the battery cells produced by the same manufacturer at the same time (point in time) are in a state of completion of charging. By comparing and judging the temperature and discharging rate related reference data RD' of the battery cell 105 ′ measured in advance from the voltage value, it is possible to determine whether the battery cell 105 ′ is in a normal state. .

여기서, 상술한 레퍼런스데이터(RD')는, 상술한 제조사의 서버(111)가 배터리관리시스템(101)으로 전송한 데이터일 수 있다.Here, the above-described reference data RD′ may be data transmitted by the above-described manufacturer's server 111 to the battery management system 101 .

이상에서 설명한 바와 같이, 본 발명의 일실시예에 의하면, 복수개의 배터리셀 중 특정 배터리셀의 전압이 떨어진 경우, 해당 특정 배터리셀만을 충전함으로써, 복수개의 배터리셀 간 언밸런싱이 발생하는 것을 방지할 수 있는 효과가 있다.As described above, according to an embodiment of the present invention, when the voltage of a specific battery cell among a plurality of battery cells drops, by charging only the specific battery cell, it is possible to prevent unbalance between the plurality of battery cells from occurring. can have an effect.

이상에서, 본 발명의 실시예를 구성하는 모든 구성 요소들이 하나로 결합되거나 결합되어 동작하는 것으로 설명되었다고 해서, 본 발명이 반드시 이러한 실시예에 한정되는 것은 아니다. 즉, 본 발명의 목적 범위 안에서라면, 그 모든 구성 요소들이 하나 이상으로 선택적으로 결합하여 동작할 수도 있다.In the above, even though all the components constituting the embodiment of the present invention are described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more.

이상의 설명은 본 발명의 기술 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 특성에서 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 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, 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 construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

101 : 배터리관리시스템
103 : 배터리상태판단부
105 : 배터리셀
105' : 충전대상배터리셀
107 : 충전모듈제어부
109 : 충전모듈
109' : 충전대상배터리셀(105')에 전기적으로 연결된 충전모듈
111 : 제조사서버
113 : 통신부
115 : 관리자단말기
S1 : 작동개시신호
RD : 레퍼런스데이터
CA : 충전완료알림신호101: battery management system
103: battery state judgment unit
105: battery cell
105': battery cell to be charged
107: charging module control unit
109: charging module
109': a charging module electrically connected to the charging target battery cell 105'
111: manufacturer server
113: communication department
115: manager terminal
S1: operation start signal
RD: Reference data
CA: Charging completion notification signal

Claims (4)

배터리셀의 선택적 충전 방법에 있어서,
(a) 배터리관리시스템의 배터리상태판단부가, 복수개의 배터리셀 각각의 전압을 측정하여, 기설정된 기준전압 이하인 충전대상배터리셀을 선정하는 단계;
(b) 상기 배터리관리시스템의 충전모듈제어부가, 상기 복수개의 배터리셀 각각에 전기적으로 연결된 충전모듈들 중, 상기 충전대상배터리셀에 전기적으로 연결된 충전모듈을 작동하여 상기 충전대상배터리셀을 충전하는 단계; 및
(c) 상기 배터리관리시스템의 상기 배터리상태판단부가, 충전되는 상기 충전대상배터리셀의 정상충전여부를 판단하는 단계;
를 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법.In the selective charging method of a battery cell,
(a) selecting, by the battery state determination unit of the battery management system, a voltage of each of the plurality of battery cells to be charged, which is less than or equal to a preset reference voltage;
(b) the charging module control unit of the battery management system operates a charging module electrically connected to the charging target battery cell among the charging modules electrically connected to each of the plurality of battery cells to charge the charging target battery cell step; and
(c) determining, by the battery state determining unit of the battery management system, whether the charging target battery cell is normally charged;
Selective charging method of a battery cell, characterized in that it comprises a. 제 1 항에 있어서,
(d) 상기 충전대상배터리셀의 충전이 완료된 경우, 상기 배터리관리시스템의 상기 충전모듈제어부가, 상기 충전대상배터리셀에 전기적으로 연결된 상기 충전모듈의 작동을 중지시키는 단계;
를 더 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법.The method of claim 1,
(d) when the charging of the charging target battery cell is completed, stopping, by the charging module control unit of the battery management system, the operation of the charging module electrically connected to the charging target battery cell;
The selective charging method of the battery cell, characterized in that it further comprises. 제 2 항에 있어서,
(e) 상기 배터리관리시스템의 통신부가, 상기 충전대상배터리셀에 대한 충전완료알림신호를 관리자단말기로 전송하는 단계;
를 더 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법.3. The method of claim 2,
(e) transmitting, by the communication unit of the battery management system, a charging completion notification signal for the charging target battery cell to a manager terminal;
The selective charging method of the battery cell, characterized in that it further comprises. 제 2 항에 있어서,
상기 (e) 상기 배터리관리시스템의 상기 배터리상태판단부가, 충전이 완료된 상기 충전대상배터리셀의 정상상태 여부를 판단하는 단계;
를 더 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법.3. The method of claim 2,
(e) determining, by the battery state determining unit of the battery management system, whether the charging target battery cell is in a normal state;
The selective charging method of the battery cell, characterized in that it further comprises.
KR1020200187111A 2020-12-30 2020-12-30 Selectively charging method for battery cell KR102659303B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011018482A (en) * 2009-07-07 2011-01-27 Toyota Motor Corp Inspection method of battery
KR20140044029A (en) * 2012-10-04 2014-04-14 에스케이이노베이션 주식회사 Energy storage system and control method for preventing cell low-voltage
KR101820476B1 (en) * 2016-12-02 2018-02-28 이성훈 Apparatus for Monitoring Charge of Mobile Terminal Battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011018482A (en) * 2009-07-07 2011-01-27 Toyota Motor Corp Inspection method of battery
KR20140044029A (en) * 2012-10-04 2014-04-14 에스케이이노베이션 주식회사 Energy storage system and control method for preventing cell low-voltage
KR101820476B1 (en) * 2016-12-02 2018-02-28 이성훈 Apparatus for Monitoring Charge of Mobile Terminal Battery

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