KR20130013101A - Battery sensor and the operation method thereof - Google Patents

Battery sensor and the operation method thereof Download PDF

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KR20130013101A
KR20130013101A KR1020110074522A KR20110074522A KR20130013101A KR 20130013101 A KR20130013101 A KR 20130013101A KR 1020110074522 A KR1020110074522 A KR 1020110074522A KR 20110074522 A KR20110074522 A KR 20110074522A KR 20130013101 A KR20130013101 A KR 20130013101A
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battery
internal resistance
average
standard deviation
deviation
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KR1020110074522A
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Korean (ko)
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권순근
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현대모비스 주식회사
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Priority to KR1020110074522A priority Critical patent/KR20130013101A/en
Priority to CN2012102592495A priority patent/CN102901927A/en
Publication of KR20130013101A publication Critical patent/KR20130013101A/en

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    • 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]
    • G01R31/389—Measuring internal impedance, internal conductance or related variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • 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]
    • G01R31/3644—Constructional arrangements
    • G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
    • 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]
    • G01R31/374—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)

Abstract

PURPOSE: An operating method of a battery sensor is provided to produce information having a relatively high accuracy during a battery replacement. CONSTITUTION: An operating method of a batter sensor comprises the following steps: A battery sensor(10) comprises a measuring part(120) and a storing part(110). The measuring part measures the internal resistance of a battery when the power source is initially supplied from the battery, and calculates the average. The measuring part calculates the standard deviation of the internal resistance, and determines the standard variation which is a standard for determining the battery replacement by the standard deviation of the internal resistance. The storing part stores the internal resistance, the average, the standard deviation, and the standard variation. [Reference numerals] (110) Storing part; (120) Measuring part; (AA) Battery

Description

배터리 센서 및 그 동작 방법{Battery Sensor and the Operation Method thereof}Battery sensor and its operation method

본 발명은 배터리 센서에 관한 것으로서, 더 구체적으로는 배터리 교체시에도 비교적 정확도 높은 감지정보를 제공할 수 있는 배터리 센서 및 그 동작 방법에 관한 것이다.The present invention relates to a battery sensor, and more particularly, to a battery sensor and a method of operating the battery sensor capable of providing relatively accurate sensing information even when the battery is replaced.

일반적으로, 차량의 배터리 센서(IBS; Intelligent Battery Sensor)는 션트저항과 내부 온도센서에 의해 배터리 잔량, 내부온도 및 시동성 등을 측정하고, 측정된 정보를 차량 ECU로 송신한다.In general, an intelligent battery sensor (IBS) of a vehicle measures battery level, internal temperature, startability, etc. by a shunt resistance and an internal temperature sensor, and transmits the measured information to the vehicle ECU.

그런데, 종래의 배터리 센서는 지정된 배터리 이외에 새로운 배터리를 장착하면, 새로 장착된 배터리를 인식하지 못함에 따라 배터리 잔량, 내부온도 및 시동성 등을 제대로 측정할 수 없는 문제가 있다.However, in the conventional battery sensor, when a new battery is installed in addition to the designated battery, there is a problem in that the remaining battery capacity, internal temperature, and startability cannot be properly measured because the newly installed battery is not recognized.

본 발명은 전술한 바와 같은 기술적 배경에서 안출된 것으로서, 배터리 내부저항의 표준편차를 이용하여 배터리 교체 여부를 확인할 수 있는 배터리 센서 및 그 동작 방법을 제공하는 것을 그 목적으로 한다.The present invention has been made in the technical background as described above, and an object thereof is to provide a battery sensor and a method of operating the battery sensor that can determine whether to replace the battery using a standard deviation of the battery internal resistance.

본 발명의 일면에 따른 배터리 센서는, 배터리로부터 전원이 초기공급되면, 상기 배터리의 내부저항을 복수 번 측정하여 그 평균을 산출하고, 상기 평균을 이용하여 상기 내부저항의 표준편차를 산출하고, 상기 내부저항의 표준편차로부터 상기 배터리의 교체 여부를 판단하는 기준인 기준편차를 결정하는 측정부; 및 상기 내부저항, 상기 평균, 상기 표준편차 및 상기 기준편차를 저장하는 저장부를 포함하는 것을 특징으로 한다.The battery sensor according to an aspect of the present invention, when power is initially supplied from a battery, measures the internal resistance of the battery a plurality of times, calculates an average thereof, calculates a standard deviation of the internal resistance using the average, and A measurement unit for determining a reference deviation, which is a standard for determining whether to replace the battery, from a standard deviation of internal resistance; And a storage unit which stores the internal resistance, the average, the standard deviation, and the reference deviation.

본 발명의 다른 면에 따른 배터리 센서의 동작 방법은, 배터리로부터 전원이 초기공급되면, 상기 배터리의 내부저항을 복수 번 측정하는 단계; 상기 내부저항의 평균을 산출하는 단계; 상기 평균을 이용하여 복수의 상기 내부저항의 표준편차를 산출하는 단계; 상기 복수의 내부저항의 표준편차를 이용하여 상기 배터리의 교체 여부를 판단하는 기준인 기준편차를 결정하는 단계; 및 상기 평균 및 상기 기준편차를 저장하는 단계를 포함하는 것을 특징으로 한다.According to another aspect of the present invention, a method of operating a battery sensor may include: measuring internal resistance of the battery a plurality of times when power is initially supplied from the battery; Calculating an average of the internal resistance; Calculating standard deviations of the plurality of internal resistances using the average; Determining a reference deviation which is a reference for determining whether to replace the battery using the standard deviations of the plurality of internal resistances; And storing the mean and the reference deviation.

본 발명에 따르면, 초기적용된 배터리 내부저항의 평균 및 기준이 되는 표준편차를 측정하여 저장하고, 배터리 교체를 의심할 수 있는 배터리 전원이 차단되었다가 재공급되는 경우에 내부저항의 표준편차를 재측정하여 기준을 벗어나는지 여부를 확인함에 따라 배터리 여체 여부를 용이하게 감지할 수 있다.According to the present invention, the average and reference standard deviation of the applied battery internal resistance is measured and stored, and the standard deviation of the internal resistance is re-measured when the battery power, which may be suspected of replacing the battery, is shut off and then supplied again. By checking whether the reference is out of the standard can easily detect the battery body.

뿐만 아니라, 본 발명은 배터리 교체시에도 배터리 잔량, 온도, 시동성 등의 감지정보의 결정에 이용되는 배터리 내부저항의 평균을 재결정함에 따라 배터리 교체시에도 정확도 높은 감지정보를 제공할 수 있다.In addition, the present invention can provide accurate detection information even when the battery is replaced by re-determining the average of the internal resistance of the battery used to determine the detection information such as the remaining battery capacity, temperature, startability, etc. during the battery replacement.

도 1은 본 발명의 실시예에 따른 배터리 센서를 도시한 구성도.
도 2는 본 발명의 실시예에 따른 배터리 센서의 동작 방법을 도시한 흐름도.1 is a block diagram showing a battery sensor according to an embodiment of the present invention.
2 is a flowchart illustrating a method of operating a battery sensor according to an exemplary embodiment of the present invention.

본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다. 한편, 본 명세서에서 사용된 용어는 실시예들을 설명하기 위한 것이며 본 발명을 제한하고자 하는 것은 아니다. 본 명세서에서, 단수형은 문구에서 특별히 언급하지 않는 한 복수형도 포함한다. 명세서에서 사용되는 "포함한다(comprises)" 및/또는 "포함하는(comprising)"은 언급된 구성소자, 단계, 동작 및/또는 소자는 하나 이상의 다른 구성소자, 단계, 동작 및/또는 소자의 존재 또는 추가를 배제하지 않는다.Advantages and features of the present invention, and methods of achieving the same will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used herein, the terms " comprises, " and / or "comprising" refer to the presence or absence of one or more other components, steps, operations, and / Or additions.

이제 본 발명의 바람직한 실시예에 대하여 첨부한 도면을 참조하여 상세히 설명하기로 한다. 도 1은 본 발명의 실시예에 따른 배터리 센서를 도시한 구성도이다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a block diagram illustrating a battery sensor according to an embodiment of the present invention.

도 1에 도시된 바와 같이, 본 발명의 실시예에 따른 배터리 센서(10)는 측정부(120) 및 저장부(110)를 포함한다.As shown in FIG. 1, the battery sensor 10 according to an exemplary embodiment of the present invention includes a measuring unit 120 and a storage unit 110.

측정부(120)는 배터리 전원이 초기공급되면 배터리 교체 여부 판단의 기준인 기준편차를 결정한다.When the battery power is initially supplied, the measurement unit 120 determines a reference deviation that is a standard for determining whether to replace the battery.

구체적으로, 측정부(120)는 배터리 내부저항을 복수 번 측정한 후 그 평균을 산출하여 저장부(110)에 저장하고, 저장된 배터리 내부저항의 평균을 이용하여 복수의 내부저항의 표준편차를 산출한 다음, 복수의 내부저항의 표준편차의 적어도 일부를 이용하여 기준편차를 결정한다.Specifically, the measurement unit 120 measures the battery internal resistance a plurality of times, calculates an average thereof, stores the result in the storage unit 110, and calculates standard deviations of the plurality of internal resistances using the average of the stored battery internal resistance. The reference deviation is then determined using at least a portion of the standard deviation of the plurality of internal resistances.

측정부(120)는 배터리 전원이 차단되었다가 재공급되면, 내부저항의 표준편차를 적어도 1회 재측정하여 재측정된 표준편차가 기준편차에서 벗어나는지를 확인함으로써, 배터리의 교체 여부를 확인하고, 배터리가 교체되었으면 내부저항의 평균 및 기준편차 등을 재결정하고, 저장부(110)에 갱신하여 저장한다.When the battery power is cut off and then resupplyed, the measurement unit 120 re-measures the standard deviation of the internal resistance at least once to check whether the re-measured standard deviation deviates from the standard deviation, thereby checking whether the battery is replaced. When the battery is replaced, the average and the reference deviation of the internal resistance are re-determined, and updated and stored in the storage unit 110.

저장부(110)는 측정부(120)의 요청에 따라 내부저항의 평균, 기준편차, 측정된 배터리 내부저항 등을 저장한다.The storage unit 110 stores the average of the internal resistance, the reference deviation, the measured battery internal resistance, and the like, at the request of the measuring unit 120.

이와 같이, 본 발명은 배터리 교체시에도 배터리 잔량, 온도나, 시동성 등의 감지정보의 결정에 이용되는 배터리 내부저항의 평균을 재결정함에 따라 배터리 교체시에도 정확도 높은 감지정보를 제공할 수 있다.As described above, the present invention can provide accurate detection information even when the battery is replaced by re-determining the average of the battery internal resistance used to determine the detection information such as the remaining battery capacity, the temperature, or the startability even when the battery is replaced.

이하, 도 2를 참조하여 본 발명의 실시예에 따른 배터리 센서의 동작 방법에 대하여 설명한다. 도 2는 본 발명의 실시예에 따른 배터리 센서의 동작 방법을 도시한 흐름도이다.Hereinafter, a method of operating a battery sensor according to an exemplary embodiment of the present invention will be described with reference to FIG. 2. 2 is a flowchart illustrating a method of operating a battery sensor according to an exemplary embodiment of the present invention.

도 2를 참조하면, 배터리 센서(10)는 배터리 전압과 전류를 복수 번(예컨대, 50번) 측정하고, 하기의 수학식 1에 대입하여 복수의 배터리 내부저항을 측정한다(S210).Referring to FIG. 2, the battery sensor 10 measures a battery voltage and a current a plurality of times (eg, 50 times), and measures a plurality of battery internal resistances by substituting Equation 1 below (S210).

Figure pat00001
Figure pat00001

배터리 센서(10)는 하기의 수학식 2와 같이 측정된 복수의 배터리 내부저항(Xn)의 평균

Figure pat00002
을 산출하여 저장한다(S220). The battery sensor 10 is an average of the plurality of battery internal resistances Xn measured as in Equation 2 below.
Figure pat00002
To calculate and store (S220).

Figure pat00003
Figure pat00003

배터리 센서(10)는 하기의 수학식 3과 같이 복수의 배터리 내부저항의 평균을 이용하여 복수의 내부저항의 표준편차를 산출하고, 복수의 내부저항의 표준편차의 적어도 일부를 이용하여 기준편차를 결정하여 저장한다(S230).The battery sensor 10 calculates standard deviations of the plurality of internal resistances using averages of the plurality of battery internal resistances as shown in Equation 3 below, and uses the at least a portion of the standard deviations of the plurality of internal resistances to calculate the reference deviations. Determine and store (S230).

Figure pat00004
Figure pat00004

이때, (S210) 및 (S230)단계는 배터리 교체 여부를 판단하기 위한 평균 및 기준편차를 결정하기 위한 과정으로서, 배터리 전원의 초기공급 또는 배터리 전원의 차단 후 공급시에 수행된다.At this time, the steps (S210) and (S230) is a process for determining the average and reference deviation for determining whether to replace the battery, is performed at the time of initial supply of the battery power or after supply of the battery power.

배터리 센서(10)는 배터리 전원이 차단되었다가 다시 공급되면(Power Off -> Power On), 저장된 배터리 내부저항의 평균을 이용하여 적어도 하나의 내부저항의 표준편차를 재산출하여 기준편차와 비교한다(S240).When the battery power is cut off and then supplied again (Power Off-> Power On), the battery sensor 10 recalculates the standard deviation of at least one internal resistance using the average of the stored battery internal resistance and compares it with the reference deviation. (S240).

배터리 센서(10)는 재산출된 적어도 하나의 배터리 내부저항의 표준편차가 기준편차를 벗어나면, 배터리가 교체되었다고 판단하고, 배터리 내부저항의 평균을 재측정하여 저장한다(S250).The battery sensor 10 determines that the battery is replaced when the standard deviation of the at least one battery internal resistance recalculated is out of the reference deviation, and measures and stores the average of the battery internal resistance again (S250).

이후, 배터리 센서(10)는 배터리 내부저항의 평균을 이용하여 배터리 잔량, 배터리 온도 및 시동성 등을 확인할 수 있다.Thereafter, the battery sensor 10 may check the remaining battery capacity, the battery temperature, and the startability using the average of the battery internal resistance.

이와 같이, 본 발명은 초기적용된 배터리 내부저항의 평균 및 기준이 되는 표준편차를 측정하여 저장하고, 배터리 교체를 의심할 수 있는 배터리 전원의 차단 후 공급의 경우에 내부저항의 표준편차를 재측정하여 기준을 벗어나는지 여부를 확인함에 따라 배터리 여체 여부를 감지할 수 있다.As such, the present invention measures and stores the average and reference standard deviation of the battery internal resistance applied initially, and re-measures the standard deviation of the internal resistance in the case of supplying the battery after shutting off the battery which may suspect battery replacement. The battery can be detected by checking whether the reference is out of range.

이상, 본 발명의 구성에 대하여 첨부 도면을 참조하여 상세히 설명하였으나, 이는 예시에 불과한 것으로서, 본 발명이 속하는 기술분야에 통상의 지식을 가진자라면 본 발명의 기술적 사상의 범위 내에서 다양한 변형과 변경이 가능함은 물론이다. 따라서 본 발명의 보호 범위는 전술한 실시예에 국한되어서는 아니되며 이하의 특허청구범위의 기재에 의하여 정해져야 할 것이다.While the present invention has been described in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the above-described embodiments. Those skilled in the art will appreciate that various modifications, Of course, this is possible. Accordingly, the scope of protection of the present invention should not be limited to the above-described embodiments, but should be determined by the description of the following claims.

Claims (6)

배터리로부터 전원이 초기공급되면, 상기 배터리의 내부저항을 복수 번 측정하여 그 평균을 산출하고, 상기 평균을 이용하여 상기 내부저항의 표준편차를 산출하고, 상기 내부저항의 표준편차로부터 상기 배터리의 교체 여부를 판단하는 기준인 기준편차를 결정하는 측정부; 및
상기 내부저항, 상기 평균, 상기 표준편차 및 상기 기준편차를 저장하는 저장부
를 포함하는 배터리 센서.When power is initially supplied from a battery, the internal resistance of the battery is measured a plurality of times to calculate an average thereof, the standard deviation of the internal resistance is calculated using the average, and replacement of the battery from the standard deviation of the internal resistance. A measurement unit for determining a reference deviation that is a criterion for determining whether or not; And
A storage unit storing the internal resistance, the average, the standard deviation, and the reference deviation
. 제1항에 있어서, 상기 측정부는,
상기 전원이 차단되었다가 재공급되면, 상기 내부저항을 복수 번 측정하고, 상기 평균을 이용하여 적어도 하나의 상기 표준편차를 재산출하고, 상기 적어도 하나의 표준편차가 상기 기준편차를 벗어나면, 상기 배터리가 교체되었다고 판단하는 것인 배터리 센서.The method of claim 1, wherein the measuring unit,
When the power is cut off and then supplied again, the internal resistance is measured a plurality of times, and the mean is used to recalculate at least one standard deviation, and when the at least one standard deviation is out of the standard deviation, The battery sensor that determines that the battery has been replaced. 제2항에 있어서, 상기 측정부는,
상기 배터리가 교체되었다고 판단하면, 상기 평균을 재산출하여 상기 저장부에 갱신하여 저장하는 것인 배터리 센서.The method of claim 2, wherein the measuring unit,
And if the battery is determined to be replaced, recalculate the average and update and store the average in the storage unit. 배터리로부터 전원이 초기공급되면, 상기 배터리의 내부저항을 복수 번 측정하는 단계;
상기 내부저항의 평균을 산출하는 단계;
상기 평균을 이용하여 복수의 상기 내부저항의 표준편차를 산출하는 단계;
상기 복수의 내부저항의 표준편차를 이용하여 상기 배터리의 교체 여부를 판단하는 기준인 기준편차를 결정하는 단계; 및
상기 평균 및 상기 기준편차를 저장하는 단계
를 포함하는 배터리 센서의 동작 방법.When power is initially supplied from a battery, measuring internal resistance of the battery a plurality of times;
Calculating an average of the internal resistance;
Calculating standard deviations of the plurality of internal resistances using the average;
Determining a reference deviation which is a reference for determining whether to replace the battery using the standard deviations of the plurality of internal resistances; And
Storing the mean and the reference deviation
Operation method of a battery sensor comprising a. 제4항에 있어서,
상기 전원이 차단되었다가 재공급되면, 상기 전원을 재공급하는 상기 배터리의 내부저항을 복수 번 측정하고, 기산출된 상기 평균을 이용하여 적어도 하나의 상기 내부저항의 표준편차를 재산출하는 단계; 및
재산출된 상기 적어도 하나의 내부저항의 표준편차가 상기 기준편차를 벗어나면, 상기 배터리가 교체되었다고 판단하는 단계
를 더 포함하는 배터리 센서의 동작 방법.5. The method of claim 4,
Measuring the internal resistance of the battery resupplying the power a plurality of times when the power is cut off and resupplying, and recalculating at least one standard deviation of the internal resistance using the calculated average; And
Determining that the battery is replaced when the standard deviation of the at least one internal resistance recalculated is outside the reference deviation
Operation method of a battery sensor further comprises. 제5항에 있어서,
교체된 상기 배터리에 대해 상기 평균을 산출하고, 상기 평균을 이용하여 상기 기준편차를 재결정하는 단계; 및
재결정된 상기 평균 및 상기 기준편차를 갱신하여 저장하는 단계
를 더 포함하는 배터리 센서의 동작 방법.The method of claim 5,
Calculating the mean for the replaced battery and re-determining the reference deviation using the mean; And
Updating and storing the re-determined average and the reference deviation
Operation method of a battery sensor further comprises.
KR1020110074522A 2011-07-27 2011-07-27 Battery sensor and the operation method thereof KR20130013101A (en)

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