KR102659303B1 - Selectively charging method for battery cell - Google Patents

Selectively charging method for battery cell Download PDF

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KR102659303B1
KR102659303B1 KR1020200187111A KR20200187111A KR102659303B1 KR 102659303 B1 KR102659303 B1 KR 102659303B1 KR 1020200187111 A KR1020200187111 A KR 1020200187111A KR 20200187111 A KR20200187111 A KR 20200187111A KR 102659303 B1 KR102659303 B1 KR 102659303B1
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battery
charging
charged
battery cell
management system
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KR1020200187111A
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Korean (ko)
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KR20220095515A (en
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김창인
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주식회사 솔루엠
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • H01M10/441Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/371Arrangements 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/00712Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility 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

본 발명은 배터리셀의 선택적 충전 방법에 관한 것이다.
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.
The present invention relates to a method for selectively charging battery cells.
According to one embodiment of the present invention, when the voltage of a specific battery cell among a plurality of battery cells drops, it is possible to prevent unbalancing between the plurality of battery cells by charging only the specific battery cell.

Description

배터리셀의 선택적 충전 방법{SELECTIVELY CHARGING METHOD FOR BATTERY CELL}Selective charging method for battery cells {SELECTIVELY CHARGING METHOD FOR BATTERY CELL}

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

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

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 the battery, and the system that manages the battery is generally referred to as 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 to maintain and manage it in optimal condition, and plays an important role in predicting battery replacement times and detecting battery problems in advance.

배터리팩, 배터리모듈, 배터리셀에 대한 일반적인 정의는 다음과 같다.The general definitions of battery pack, battery module, and battery cell 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 to charge or discharge electrical energy, made by placing the anode, cathode, separator, and electrolyte in a square 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 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 on 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.Generally, a number of battery cells are installed inside a battery pack, but if the balance between these battery cells is not correct, 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 unbalancing occurs, such as when the voltage of a specific battery cell among a plurality of battery cells is lowered, there is a need to develop a technology that can selectively charge 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 selective charging and discharging technology of conventional battery cells, Korean Patent No. 10-1377321 describes 'a battery pack and portable electronic device that can be charged and discharged by selecting a battery cell, a method of discharging a battery, and a method of controlling the charging of a battery. ' is listed.

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 was conceived in the above-described background, and is a battery that can prevent unbalancing between a plurality of battery cells by charging only the specific battery cell when the voltage of a specific battery cell among the plurality of battery cells drops. The purpose is to provide a method for selectively charging cells.

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 here, and other objects not mentioned will be clearly understood by those skilled in the art from the description below.

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 purpose, an embodiment of the present invention provides a method for selectively charging battery cells, wherein (a) the battery status determination unit of the battery management system measures the voltage of each of the plurality of battery cells, and determines the voltage of each of the plurality of battery cells to be less than or equal to a preset reference voltage. Selecting a battery cell to be charged; (b) The charging module control unit of the battery management system operates a charging module electrically connected to the battery cell to be charged, among the charging modules electrically connected to each of the plurality of battery cells, to charge the battery cell to be charged. step; and (c) determining, by the battery state determination unit of the battery management system, whether the battery cell to be charged 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 charging of the battery cell to be charged is completed, stopping the charging module control unit of the battery management system to operate the charging module electrically connected to the battery cell to be charged; further comprising: Provides a selective charging method for battery cells, 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) the communication unit of the battery management system transmits a charge completion notification signal for the battery cell to be charged to the manager terminal.

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, (e) the battery state determination unit of the battery management system determines whether the battery cell to be charged is in a normal state. 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 one embodiment of the present invention, when the voltage of a specific battery cell among a plurality of battery cells drops, it is possible to prevent unbalancing between the plurality of battery cells by charging only the specific battery cell.

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.
Figure 1 is a block diagram showing a method of selectively charging a battery cell according to an embodiment of the present invention.
2 to 4 are flowcharts showing a method for selectively charging battery cells 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 through illustrative drawings. When adding reference numerals to components in each drawing, it should be noted that identical components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, 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 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.Additionally, when describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component may be directly connected or connected to that other component, but there is another component between each component. It will be understood that elements may be “connected,” “combined,” 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.Figure 1 is a block diagram showing a method of selectively charging a battery cell according to an embodiment of the present invention. 2 to 4 are flowcharts showing a method for selectively charging battery cells 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 drawings, the method of selectively charging battery cells according to an embodiment of the present invention includes (a) the battery state determination unit 103 of the battery management system 101, selecting a plurality of battery cells 105; -1 to 105-n, n is a natural number of 2 or more) measuring each voltage (V) and selecting a battery cell to be charged (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 has 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 of 2 or more), charging the battery cell 105' by operating a charging module 109' electrically connected to the battery cell 105'; and (c) the battery state determination unit 103 of the battery management system 101 determining whether the charging target battery cell 105' is normally charged.

이하, 각 단계별로 설명한다.Below, each step will be explained.

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 status 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 sets a preset standard. This is the step of selecting a specific charging target battery cell 105' whose voltage is lower than or equal to that of the battery cell 105'.

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). The battery management system 101 manages the voltage, current, and temperature of the battery in real time and immediately transmits the management status to the manager, thereby preventing any This refers to a system that prevents potential 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 determination unit 103 may measure the voltage (V) of each battery cell (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.This battery state determination unit 103 selects a charging target battery cell 105' whose voltage (V) is less than or equal to a preset reference voltage among the battery cells 105-1 to 105-n, each of which has a measured voltage (V).

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.Next, in step (b), the charging module control unit 107 of the battery management system 101 operates charging modules 109-1 to 109 electrically connected to each of the plurality of battery cells 105-1 to 105-n. -n, n is a natural number of 2 or more), this is the step of charging the battery cell 105' by operating the charging module 109' electrically connected to the 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 battery cell 105' to be charged, thereby charging the battery. Activates the charging function of the charging target battery cell 105' of the module 109'.

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', for example, may be configured to receive current from an external power source and charge or stop charging the battery cell 105' to be charged by operating a switch, and the charging module control unit 107 The charging function of the charging module 109' can be activated by applying an operation start signal (S1) that turns on the switch of the charging module 109' to 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 determination 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, when determining whether the battery cell 105' to be charged is normally charged, the battery state determination unit 103 determines the voltage at the start of charging for battery cells produced by the same manufacturer at the same time (point in time). It is possible to determine whether the battery cell 105' is normally charged by making a comparative judgment based on the previously measured temperature and charging speed-related reference data (RD) of the battery cell 105'.

이 때, 상술한 레퍼런스데이터(RD)는, 상술한 제조사의 서버(111)가 배터리관리시스템(101)으로 전송한 데이터일 수 있다.At this time, the above-described reference data (RD) may be data transmitted from the above-described manufacturer's server 111 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.Meanwhile, the selective charging method of a battery cell according to an embodiment of the present invention is (d) when charging of the battery cell 105' to be charged 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 battery cell (105') to be charged.

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 charging of the battery cell 105' to be charged is completed (when it becomes more than a preset fully charged voltage value), the battery cell to be charged ( An operation stop signal (S2) is transmitted to the charging module 109' electrically connected to 105', thereby stopping 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 stops the charging function of the charging module 109' by applying a stop signal (S2) to the charging module 109', which turns off the switch of the charging module 109'. You 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.Meanwhile, the selective charging method of a battery cell according to an embodiment of the present invention is (e) the communication unit 113 of the battery management system 101 sends a charge completion notification signal (CA) to the battery cell 105' to be charged. ) is transmitted to the manager terminal 115.

여기서, 통신부(113)가 관리자단말기(115)와 통신하는 방식은 유선 또는 무선통신 방식 모두 가능하다.Here, the method by which the communication unit 113 communicates with the manager terminal 115 can be either wired or wireless communication.

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 that receives the charging completion notification signal (CA) may be provided in various ways, such as smartphones, tablet PCs, workstations, and wearable devices.

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.Meanwhile, in the selective charging method of a battery cell according to an embodiment of the present invention, after step (d) described above, (e) the battery status determination unit 103 of the battery management system 101 selects a charging target for which charging has been completed. 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 for which charging has been completed, the battery state determination unit 103 selects battery cells produced by the same manufacturer at the same time (point in time) and determines the normal state of the charging target battery cell 105' at the time of completion of charging. It is possible to determine whether the battery cell to be charged (105') is in a normal state by comparing and judging the voltage value with reference data (RD') related to the temperature and discharge rate of the battery cell to be charged (105') previously measured. .

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 from 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, unbalancing between the plurality of battery cells can be prevented by charging only the specific battery cell. There is a possible 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 have been described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, as long as it is within the scope of the purpose of the present invention, all of the components may be operated by selectively combining one or more of them.

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 an illustrative explanation of the technical idea of the present invention, and various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights 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 : 충전완료알림신호
101: Battery management system
103: Battery status judgment unit
105: battery cell
105': Battery cell to be charged
107: Charging module control unit
109: Charging module
109': Charging module electrically connected to the battery cell to be charged (105')
111: Manufacturer server
113: Department of Communications
115: Administrator 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;
(c) 상기 배터리관리시스템의 상기 배터리상태판단부가, 충전되는 상기 충전대상배터리셀의 정상충전여부를 판단하는 단계;
(d) 상기 충전대상배터리셀의 충전이 완료된 경우, 상기 배터리관리시스템의 상기 충전모듈제어부가, 상기 충전대상배터리셀에 전기적으로 연결된 상기 충전모듈의 작동을 중지시키는 단계;
(e) 상기 배터리관리시스템의 통신부가, 상기 충전대상배터리셀에 대한 충전완료알림신호를 관리자단말기로 전송하는 단계; 및
상기 배터리관리시스템의 상기 배터리상태판단부가, 충전이 완료된 상기 충전대상배터리셀의 상태와, 동일한 제조사가 동일한 시기에 생산한 배터리셀들을 대상으로 충전 개시 시점의 전압값에서 기 측정된 온도, 방전 속도 관련 레퍼런스 데이터 - 상기 레퍼런스 데이터는 상기 배터리관리시스템의 통신부를 통해 상기 동일한 제조사의 서버로부터 수신한 것임 - 를 비교하여 상기 충전대상배터리셀의 정상 여부를 판단하는 단계;를 포함하는 것을 특징으로 하는 배터리셀의 선택적 충전 방법.
In the method of selective charging of battery cells,
(a) the battery status determination unit of the battery management system measures the voltage of each of a plurality of battery cells and selects a battery cell to be charged that is lower than a preset reference voltage;
(b) The charging module control unit of the battery management system operates a charging module electrically connected to the battery cell to be charged, among the charging modules electrically connected to each of the plurality of battery cells, to charge the battery cell to be charged. step;
(c) determining, by the battery state determination unit of the battery management system, whether the battery cell to be charged is normally charged;
(d) when charging of the battery cell to be charged is completed, stopping, by the charging module control unit of the battery management system, the operation of the charging module electrically connected to the battery cell to be charged;
(e) the communication unit of the battery management system transmitting a charge completion notification signal for the battery cell to be charged to the manager terminal; and
The battery state determination unit of the battery management system determines the state of the battery cell to be charged for which charging has been completed, the temperature and discharge rate previously measured from the voltage value at the time of charging start for battery cells produced at the same time by the same manufacturer. Comparing related reference data - the reference data is received from the server of the same manufacturer through the communication unit of the battery management system - and determining whether the battery cell to be charged is normal; a battery comprising a. Optional charging method of cells.
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Citations (2)

* 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
KR101820476B1 (en) * 2016-12-02 2018-02-28 이성훈 Apparatus for Monitoring Charge of Mobile Terminal Battery

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101898006B1 (en) * 2012-10-04 2018-09-12 에스케이이노베이션 주식회사 Energy storage system and control method for preventing cell low-voltage

Patent Citations (2)

* 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
KR101820476B1 (en) * 2016-12-02 2018-02-28 이성훈 Apparatus for Monitoring Charge of Mobile Terminal Battery

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