KR100474266B1 - How to detect remaining battery - Google Patents

How to detect remaining battery Download PDF

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KR100474266B1
KR100474266B1 KR1019970069348A KR19970069348A KR100474266B1 KR 100474266 B1 KR100474266 B1 KR 100474266B1 KR 1019970069348 A KR1019970069348 A KR 1019970069348A KR 19970069348 A KR19970069348 A KR 19970069348A KR 100474266 B1 KR100474266 B1 KR 100474266B1
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South Korea
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battery
voltage
remaining amount
type
detection step
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KR1019970069348A
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Korean (ko)
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KR19990050269A (en
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한재옥
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엘지전자 주식회사
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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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
    • 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
    • H01M10/4221—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells with battery type recognition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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

Abstract

본 발명은 전지의 잔량 검출방법에 관한 것으로, 종래 전지의 잔량 검출방법은 현재 시스템에 전압을 인가하는 전지의 종류에 관계없이 하나의 알고리즘을 통해 잔량을 검출하여 정확한 잔량을 검출할 수 없는 문제점이 있었다. 이와 같은 문제점을 감안한 본 발명은 전지의 초기 전압을 검출하는 초기전압검출단계와; 전지의 전압변동분을 산출하는 변동분검출단계와; 상기 변동분검출단계에서 검출된 전압변동분과 각 전지의 종류에 따른 방전특성을 비교하여 전지의 종류를 판단하는 전지 종류 판단단계와; 상기 전지 종류 판단단계에서 판단된 전지의 종류가 1차전지이면 1차전지의 차단전압 및 잔량 실험치에 의한 1차전지 잔량표시 알고리즘을 수행하고, 1차전지가 아닌 경우 2차전지의 차단전압 및 잔량 실험치에 의한 2차전지 잔량표시 알고리즘을 수행하는 잔량검출단계로 이루어져, 먼저 전지의 종류를 판단한 후, 그전지의 종류에 따라 각각 차단전압과 잔량 실험치를 갖는 1차전지 잔량표시 알고리즘 또는 2차전지 잔량표시 알고리즘을 수행함으로써, 정확한 전지의 잔량을 검출하는 효과가 있다. The present invention relates to a remaining battery detection method, the conventional remaining battery detection method is a problem that can not detect the remaining amount by detecting the remaining amount through a single algorithm regardless of the type of battery to apply the voltage to the current system. there was. In view of the above problems, the present invention includes an initial voltage detection step of detecting an initial voltage of a battery; A variation detection step of calculating a voltage variation of the battery; A battery type determination step of determining the type of battery by comparing the voltage fluctuation detected in the variable detection step with discharge characteristics of each battery type; If the battery type determined in the battery type determination step is the primary battery, the primary battery remaining amount display algorithm is performed according to the blocking voltage and the remaining amount experiment value of the primary battery. The remaining amount detection step of performing the secondary battery remaining amount display algorithm based on the experimental value, first determine the type of the battery, and then the primary battery remaining amount display algorithm or secondary battery having the cutoff voltage and the remaining experiment value, respectively, according to the battery type By performing the remaining amount display algorithm, there is an effect of detecting the correct remaining amount of the battery.

Description

전지의 잔량 검출방법   Battery Level Detection Method

본 발명은 전지의 잔량 검출방법에 관한 것으로, 특히 전지의 종류를 판별하고, 그 전지의 종류에 따라 다른 방전특성을 사용하여 사용자가 정확한 잔량을 인식할 수 있도록 표시하는데 적당하도록 한 전지의 잔량 검출방법에 관한 것이다. The present invention relates to a method for detecting a remaining battery level of a battery, and more particularly, to detect a remaining battery level of a battery suitable for determining the type of a battery and for displaying a battery so that a user can recognize an accurate remaining amount by using different discharge characteristics according to the battery type. It is about a method.

일반적으로, 전지의 잔량 검출장치는 마이크로 컴퓨터를 구비하여 전지의 전압을 디지털화 한 신호를 설정시간마다 검출하고 그 값의 차이를 구해, 그 차에 따라 전지의 잔량을 표시한다. 종래 전지의 잔량 검출방법은 전지의 종류, 즉 1차전지인지 2차전지인지를 구별하지 않고, 설정시간마다 전지의 전압 값을 검출하여 그 설정시간대의 실험치인 설정 값과 비교하여 잔량을 표시하였으며, 이와 같은 종래 전지의 잔량 검출방법을 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다. In general, a battery residual amount detection device is provided with a microcomputer to detect a signal obtained by digitizing the voltage of a battery at every set time, obtain a difference in its value, and display the remaining amount of the battery according to the difference. In the conventional method of detecting the remaining amount of battery, the battery level is detected at each set time without distinguishing the type of battery, that is, the primary battery or the secondary battery, and the remaining amount is displayed by comparing with the set value which is the experimental value of the set time. When described in detail with reference to the accompanying drawings, such a residual amount detection method of a conventional battery as follows.

도1은 일반적인 전지의 잔량 검출장치의 블록도로서, 이에 도시한 바와 같이 각 설정시간별 전지의 잔량 실험치를 저장하고, 전지(1)의 전압 값을 상기 설정시간별로 검출하여 그 잔량 실험치와 비교하여 그 결과를 표시부(2)에 표시하는 마이크로 컴퓨터(3)를 포함하여 구성되며, 미설명 부호 4와 5는 각각 디지털/디지털 변환부와 시스템을 표시한다. FIG. 1 is a block diagram of a general battery residual amount detection device, as shown in FIG. 1, which stores an experimental value of a battery remaining at each setting time, detects a voltage value of the battery 1 at each setting time, and compares it with the residual battery experimental value. And a microcomputer 3 for displaying the result on the display unit 2, and reference numerals 4 and 5 denote digital / digital conversion units and systems, respectively.

상기 도1과 같은 전지의 잔량 검출장치를 이용한 전지의 잔량 검출방법은 도2에 도시한 순서도에서와 같이 설정시간마다 검출한 전지(1)의 전압을 마이크로 컴퓨터(3)에 기저장된 각 설정시간별 잔량 실험치(A, B, C, …, X)와 비교하여 그 결과 측정한 전지(1)의 전압 값이 잔량 실험치보다 같거나 크면 표시부(2)에는 이전의 잔량표시가 유지되며, 측정한 전지(1)의 전압 값이 잔량 실험치보다 작은 경우에는 다음 상태의 잔량표시를 표시부(2)상에 표시한다. 특히 잔량 실험치(X)보다 측정한 전지(1)의 전압이 낮은 경우에는 전지(1)의 잔량이 없음을 표시부(2)상에 표시하며, 시스템(5)을 다운시킨다. 이는 전지(1)의 전압이 완전히 방전되는 것을 방지하여 전지91)와 시스템(5)을 보호하게 된다. The method for detecting the remaining battery capacity of the battery using the remaining battery detection device as shown in FIG. 1 according to the set time pre-stored in the microcomputer 3 by the voltage of the battery 1 detected at each set time as shown in the flowchart shown in FIG. Compared with the remaining amount experiment value (A, B, C, ..., X), if the voltage value of the cell 1 measured as a result is equal to or greater than the remaining amount experiment value, the display of the remaining amount is maintained on the display unit 2, the measured battery When the voltage value of (1) is smaller than the remaining amount experiment value, the remaining amount display in the next state is displayed on the display portion 2. In particular, when the voltage of the battery 1 measured lower than the residual amount experiment value X is displayed on the display unit 2, the remaining amount of the battery 1 is not displayed, and the system 5 is brought down. This prevents the voltage of the battery 1 from being completely discharged, thereby protecting the battery 91 and the system 5.

도3은 전지의 방전특성 그래프도로서, 이에 도시한 바와 같이 전지의 전압(Vbatt)은 시간이 지남에 따라 거의 일정한 기울기로 감소하며, 이는 측정한 잔량 실험치(A, B, C, …, X)를 얻은 설정시간 별로 상기 전지의 전압을 검출하여 그 잔량 실험치와 비교하여 전지의 잔량을 검출하게 되며, 잔량 실험치(X)는 차단전압으로써 그 잔량 실험치(X)보다 측정된 전지의 전압 값이 낮은 경우에는 시스템으로 인가되는 전지의 전압을 차단하여 전지와 시스템을 보호하게 된다.  3 is a graph showing the discharge characteristics of the battery. As shown in FIG. 3, the voltage Vbatt of the battery decreases with an almost constant slope over time, and the measured residual amount experiment values A, B, C, ..., X The battery voltage is detected for each set time and the remaining battery level is detected by comparing with the remaining battery value. The remaining battery value (X) is a cutoff voltage, and the measured voltage value of the battery is higher than the remaining battery value (X). In the lower case, the voltage of the battery applied to the system is cut off to protect the battery and the system.

그러나, 상기와 같은 종래 전지의 잔량 검출방법은 전지의 종류에 관계없이 동일한 기준을 설정하여 전지의 검출 전압을 비교함으로써 전지별로 다른 방전특성을 잔량표시에 반영하지 못해 사용자에게 정확한 전지의 잔량표시를 할 수 없는 문제점과 아울러 전지의 종류에 관계없이 동일한 차단전압값을 가져 시스템의 보호 및 전지의 사용시간을 효율적으로 제어할 수 없는 문제점이 있었다. However, the conventional method for detecting the remaining battery capacity of a conventional battery, by setting the same reference value regardless of the type of battery, compares the detected voltages of the batteries, and thus does not reflect the discharge characteristics of each battery in the remaining capacity display so that the user can accurately display the remaining capacity of the battery. In addition to this problem, there was a problem that the protection of the system and the use time of the battery could not be efficiently controlled by having the same cutoff voltage value regardless of the type of battery.

이와 같은 문제점을 감안한 본 발명은 전지의 종류에 따라 다른 방전특성을 고려하고, 각 전지의 종류에 따른 차단전압을 이용하여 전지의 잔량을 검출하는 전지의 잔량 검출방법을 제공함에 그 목적이 있다.  In view of the above problems, an object of the present invention is to provide a method for detecting a remaining amount of a battery in which a discharge voltage is determined according to a type of a battery, and the remaining amount of the battery is detected using a cutoff voltage according to each type of battery.

상기와 같은 목적은 전지의 초기 전압을 검출하는 초기전압검출단계와; 전지의 전압변동분을 산출하는 변동분검출단계와; 상기 변동분검출단계에서 검출된 전압변동분과 각 전지의 종류에 따른 방전특성을 비교하여 전지의 종류를 판단하는 전지 종류 판단단계와; 상기 전지 종류 판단단계에서 판단된 전지의 종류가 1차전지이면 1차저지의 차단전압 및 잔량 실험치에 의한 1차전지 잔량표시 알고리즘을 수행하고, 1차전지가 아닌 경우 2차전지의 차단전압 및 잔량 실험치에 의한 2차전지 잔량표시 알고리즘을 수행하는 잔량검출단계로 구성하여, 전지의 종류를 판단한 후, 그 전지의 종류에 따라 각기 다른 알고리즘을 통해 전지의 잔량을 검출함으로써 달성되는 것으로, 이와 같은 본 발명을 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다. The above object is the initial voltage detection step of detecting the initial voltage of the battery; A variation detection step of calculating a voltage variation of the battery; A battery type determination step of determining the type of battery by comparing the voltage fluctuation detected in the variable detection step with discharge characteristics of each battery type; If the battery type determined in the battery type determination step is the primary battery, the primary battery remaining amount display algorithm is performed according to the blocking voltage and the residual amount experimental value of the primary battery. A residual battery detection step of performing a secondary battery remaining amount display algorithm based on an experimental value is achieved by determining the type of battery and then detecting the remaining amount of the battery through a different algorithm according to the type of the battery. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도4는 1차전지와 2차전지의 방전특성 그래프도로서, 이에 도시한 바와 같이 1차전지는 방전 초기부터 방전 말기까지 거의 비슷한 기울기의 전압강하를 보이며, 2차전지는 방전 초기와 방전 말기에는 급격한 전압강하를 보이며 그 사이에는 아주 완만한 전압강하 특성을 보인다. 4 is a graph showing discharge characteristics of a primary battery and a secondary battery. As shown in FIG. 4, the primary battery exhibits a voltage drop with a substantially similar slope from the beginning of discharge to the end of discharge. It shows a voltage drop with a very moderate voltage drop between them.

이러한 특성을 고려하여 현재 시스템에 전압을 공급하는 전지의 종류를 판단하는 방법은 전지의 초기 전압 값을 검출하여 그 값을 저장하고, 그 초기 전압 값과 각 설정시간에 측정한 전지의 전압 값의 차를 구해 상기 도4에 도시한 각 전지의 전압강하 특성과 비교함으로써, 전지의 종류를 판단 할 수 있게 된다.Considering these characteristics, the method of determining the type of battery supplying voltage to the current system detects the initial voltage value of the battery and stores the value, and compares the initial voltage value and the voltage value of the battery measured at each set time. By determining the difference and comparing it with the voltage drop characteristic of each battery shown in Fig. 4, it is possible to determine the type of battery.

도5는 본 발명 전지의 잔량 검출방법을 보인 순서도로서, 이에 도시한 바와 같이 전지의 초기 전압을 검출하는 초기전압검출단계와; 전지의 전압변동분을 산출하는 변동분검출단계와; 상기 변동분검출단계에서 검출된 전압변동분과 각 전지의 방전특성을 비교하여 전지의 종류를 판단하는 전지 종류 판단단계와; 상기 전지 종류 판단단계에서 판단된 전지의 종류가 1차전지이면 1차전지의 차단전압 및 잔량 실험치에 의한 1차전지 잔량표시 알고리즘을 수행하고, 1차전지가 아닌 경우 2차전지의 차단전압 및 잔량 실험치에 의한 2차전지 잔량표시 알고리즘을 수행하는 잔량검출단계로 구성된다. 5 is a flowchart showing a method of detecting a remaining amount of a battery of the present invention, and an initial voltage detecting step of detecting an initial voltage of a battery as shown therein; A variation detection step of calculating a voltage variation of the battery; A battery type determination step of determining the type of battery by comparing the voltage variation detected in the variable detection step with the discharge characteristics of each battery; If the battery type determined in the battery type determination step is the primary battery, the primary battery remaining amount display algorithm is performed according to the blocking voltage and the remaining amount experiment value of the primary battery. The remaining amount detection step of performing the secondary battery remaining amount display algorithm based on the experimental value.

이하, 상기와 같은 본 발명 전지의 잔량 표시방법을 좀 더 상세히 설명한다. Hereinafter, the remaining amount display method of the battery of the present invention as described above will be described in more detail.

먼저, 초기전압 검출단계에서는 각 전지의 초기전압을 검출한다. 이때, 처음 사용하는 1차전지는 1.5V의 값을 가지며, 처음 사용하는 2차전지는 1.2V의 값을 가진다. 그러나 이를 이용하여 전지의 종류를 판단할 수는 없다. 이는 현재 시스템에 전압을 공급하는 전지가 수 차례 사용한 것이면 방전에 의해 전압 값에 변동이 있기 때문이다.First, in the initial voltage detection step, the initial voltage of each battery is detected. At this time, the first primary battery has a value of 1.5V, the first secondary battery has a value of 1.2V. However, it cannot be used to determine the type of battery. This is because if the battery supplying the current system is used several times, the voltage value is changed by discharge.

그 다음, 변동분검출단계에서는 각 설정시간 마다 전지의 전압을 검출하여 상기 초기전압 검출단계에서 검출한 전지의 초기전압과의 차를 구한다.  Then, in the differential detection step, the voltage of the battery is detected at each set time to obtain a difference from the initial voltage of the battery detected in the initial voltage detection step.

그 다음, 전지 종류 판단단계에서는 초기전압과 각 설정시간에 검출한 전압의 차가 거의 없는 경우, 즉 초기전압에서 설정시간(t1)에 검출한 전지의 전압 값을 뺀 값과, 초기전압에서 설정시간(t2)에 검출한 전지의 전압 값을 뺀 값이 차이가 적은 경우에는 2차전지로 판단하고, 그 차이가 큰 경우에는 1차전지로 판단하게 된다. Then, in the battery type determination step, when there is almost no difference between the initial voltage and the voltage detected at each set time, that is, the initial voltage minus the voltage value of the detected battery at the set time t1, and the set time from the initial voltage. If the difference obtained by subtracting the voltage value of the battery detected in (t2) is small, the secondary battery is determined. If the difference is large, the primary battery is determined.

그 다음, 잔량검출단계에서는 상기 전지 종류 판단단계의 판단결과에 따라 각각 다른 차단전압과 잔량 실험치를 갖고, 종래와 동일한 방법으로 잔량을 표시하는 1차전지 잔량표시 알고리즘 또는 2차전지 잔량표시 알고리즘을 수행한다. 즉, 설정시간마다 1차전지 또는 2차전지의 전압을 검출하고, 기 저장된 전지의 종류에 따른 잔량 실험치와 비교하여 그 검출한 전지의 전압이 실험치보다 큰 경우에는 이전 상태의 잔량을 표시하고, 작은 경우에는 다음 상태의 잔량을 표시하게 된다. Next, in the remaining amount detection step, a primary battery remaining charge display algorithm or a secondary battery remaining charge display algorithm having different cutoff voltages and remaining test values according to the determination result of the battery type determination step, and displaying the remaining power in the same manner as before, Perform. That is, the voltage of the primary battery or the secondary battery is detected at each set time, and when the detected battery voltage is larger than the experimental value, the remaining battery level of the previous state is displayed. If it is small, the remaining amount of the next state is displayed.

이때, 차단전압은 전지의 종류에 따라 다르게 설정되며, 전지의 검출 전압이 차단전압이하인 경우 그 전지로부터 시스템에 인가되는 전압을 차단하게 된다. In this case, the cutoff voltage is set differently according to the type of battery, and when the detection voltage of the battery is lower than the cutoff voltage, the cutoff voltage is cut off from the battery.

상기한 바와 같이 본 발명은 전지의 종류를 판별하고, 그 전지의 종류에 따라 서로 다른 잔량 실험치를 사용하여 전지의 잔량을 검출함으로써, 정확한 잔량을 사용자에게 인식시키는 효과와 아울러 전지의 종류에 따라 각기 다른 차단전압을 설정하여 그 전지로부터 전압을 인가 받는 시스템을 보호하고, 전지의 사용 시간을 정확히 제어할 수 있는 효과가 있다. As described above, the present invention determines the type of battery and detects the remaining amount of battery using different remaining amount experiment values according to the type of the battery, thereby recognizing the correct remaining amount to the user, and depending on the type of battery. By setting other cut-off voltages, it is possible to protect a system receiving voltage from the battery and to accurately control the usage time of the battery.

도1은 일반적인 전지의 잔량 검출장치의 구성도.1 is a block diagram of a general battery residual amount detection device.

도2는 종래 전지의 잔량 검출 순서도.2 is a flowchart of remaining amount detection of a conventional battery.

도3은 전지의 방전특성을 보인 그래프도.3 is a graph showing discharge characteristics of a battery.

도4는 1차전지와 2차전지의 방전특성을 보인 그래프도.Figure 4 is a graph showing the discharge characteristics of the primary battery and the secondary battery.

도5는 본 발명 전지의 잔량 검출 순서도.5 is a flowchart of remaining amount detection of the battery of the present invention.

Claims (2)

전지의 초기 전압을 검출하는 초기전압검출단계와; 전지의 전압변동분을 산출하는 변동분검출단계와; 상기 변동분검출단계에서 검출된 전압변동분과 각 전지의 종류에 따른 방전특성을 비교하여 전지의 종류를 판단하는 전지 종류 판단단계와; 상기 전지 종류 판단단계에서 판단된 전지의 종류가 1차전지이면 1차전지의 차단전압 및 잔량 실험치에 의한 1차전지 잔량표시 알고리즘을 수행하고, 1차전지가 아닌 경우 2차전지의 차단전압 및 잔량 실험치에 의한 2차전지 잔량표시 알고리즘을 수행하는 잔량검출단계로 이루어진 것을 특징으로 하는 전지의 잔량 검출방법. An initial voltage detection step of detecting an initial voltage of the battery; A variation detection step of calculating a voltage variation of the battery; A battery type determination step of determining the type of battery by comparing the voltage fluctuation detected in the variable detection step with discharge characteristics of each battery type; If the battery type determined in the battery type determination step is the primary battery, the primary battery remaining amount display algorithm is performed according to the blocking voltage and the remaining amount experiment value of the primary battery. The remaining amount detection method of the battery, characterized in that the remaining amount detection step of performing a secondary battery remaining amount display algorithm based on the experimental value. 제 1항에 있어서, 상기 변동분검출단계는 초기전압검출단계에서 검출한 전지의 초기전압과 제 1설정시간에 검출한 전지의 전압 차를 구하는 제 1전압차 검출단계와; 상기 전지의 초기전압과 제 2설정시간에 검출한 전지의 전압차를 구하는 제 2전압차 검출단계와; 상기 제 1전압차 검출단계와 제 2전압차 검출단계에서 구한 전압차의 변동분을 산출하는 변동분 산출단계로 이루어진 것을 특징으로 하는 전지의 잔량 검출방법. The method of claim 1, wherein the step of detecting the differential portion comprises: a first voltage difference detection step of obtaining a voltage difference between the initial voltage of the battery detected in the initial voltage detection step and the battery detected at the first set time; A second voltage difference detecting step of obtaining a voltage difference between the initial voltage of the battery and the battery detected at the second predetermined time; And a variation calculation step of calculating a variation of the voltage difference obtained in the first voltage difference detection step and the second voltage difference detection step.
KR1019970069348A 1997-12-16 1997-12-16 How to detect remaining battery KR100474266B1 (en)

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JPH05297082A (en) * 1992-04-23 1993-11-12 Topcon Corp Battery residual capacity indicator
JPH08327710A (en) * 1995-06-01 1996-12-13 Canon Inc Battery discriminating apparatus
JPH095410A (en) * 1995-06-22 1997-01-10 Hitachi Denshi Ltd Electronic apparatus enabling selective use of battery of different kind
JPH09178827A (en) * 1995-12-26 1997-07-11 Toshiba Corp Remainder detecting device for battery capacity
JPH09219933A (en) * 1996-02-14 1997-08-19 Sony Corp Three-way electronic equipment
KR19980065567A (en) * 1997-01-13 1998-10-15 김광호 Multi battery compatible device and control method
KR19990025067A (en) * 1997-09-10 1999-04-06 윤종용 How to display the battery status of a portable computer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05297082A (en) * 1992-04-23 1993-11-12 Topcon Corp Battery residual capacity indicator
JPH08327710A (en) * 1995-06-01 1996-12-13 Canon Inc Battery discriminating apparatus
JPH095410A (en) * 1995-06-22 1997-01-10 Hitachi Denshi Ltd Electronic apparatus enabling selective use of battery of different kind
JPH09178827A (en) * 1995-12-26 1997-07-11 Toshiba Corp Remainder detecting device for battery capacity
JPH09219933A (en) * 1996-02-14 1997-08-19 Sony Corp Three-way electronic equipment
KR19980065567A (en) * 1997-01-13 1998-10-15 김광호 Multi battery compatible device and control method
KR19990025067A (en) * 1997-09-10 1999-04-06 윤종용 How to display the battery status of a portable computer

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