KR20130090861A - Detection of the rechargeable battery life and batteries chargers monitoring system - Google Patents
Detection of the rechargeable battery life and batteries chargers monitoring system Download PDFInfo
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- 239000002253 acid Substances 0.000 description 2
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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]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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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]
- G01R31/3644—Constructional arrangements
- G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
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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]
- G01R31/371—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
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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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
본 발명은 2차 전지의 전압을 일정한 시간 간격으로 측정한 후 이를 수학적 모델링 기법으로 사용한계 시점을 계산하여 사용자에게 통보하는 시스템에 관한 것이다.
본 발명에서는 일정한 주기로 측정되어진 전지의 전압 및 전류의 자료를 사용하여 작은 용량의 MCU로는 처리하기 힘든 다량의 자료를 보다 용량이 크고 성능이 향상된 퍼스널 컴퓨터에 전송하여 기존의 방법으로는 알 수 없었던 전지의 사용한계 시점을 계산하여 사용자에게 통보함으로써 불량전지의 조기 발견과 교체를 통해 2차 전지의 수명을 연장하는 등 전지를 보다 효율적으로 사용하고자 한다.
또한 전지의 상태를 실시간으로 자동 감시하게 함으로써 수작업을 통한 점검시간과 비용을 줄이고 사용자의 실수 및 충전기 불량으로 인한 미 충전상태를 사용자에게 사전에 즉시 통보하여 전지의 파손을 미연에 방지하고자 한다.The present invention relates to a system for measuring a voltage of a secondary battery at regular time intervals and calculating a time point for using the same by a mathematical modeling technique to notify a user.
In the present invention, by using the data of the voltage and current of the battery measured at regular intervals, a large amount of data that is difficult to process with a small-capacity MCU is transferred to a larger capacity and improved personal computer, which is not known by conventional methods. By calculating the usage time limit of the battery and notifying the user, the battery will be used more efficiently by prolonging the life of the secondary battery through early detection and replacement of the defective battery.
In addition, by automatically monitoring the status of the battery in real time to reduce the inspection time and cost by manual operation, and to inform the user in advance of the uncharged state due to the user's mistake and charger failure in advance to prevent damage to the battery in advance.
Description
본 발명은 납축전지 등 2차 전지의 충전 및 방전특성곡선을 계산하여 2차 전지의 잔류용량, 충전시점, 누호화된 전지의 교체시점을 사용자에게 사전에 통보함으로써 2차 전지의 과도한 방전으로 인한 연결 기기의 파손을 방지하고 충전기의 상태를 감시하여 파손된 충전기 사용으로 인한 2차 전지의 파손을 방지하여 2차 전지의 수명을 연장하는 시스템에 관한 것이다.
The present invention calculates the charging and discharging characteristic curve of a secondary battery such as a lead acid battery, and informs the user in advance of the remaining capacity of the secondary battery, the charging time, and the replacement time of the hybridized battery. The present invention relates to a system for preventing a breakdown of a connected device and monitoring a state of a charger to prevent damage of a secondary battery due to use of a broken charger, thereby extending the life of the secondary battery.
납축전지 등 2차 전지는 방전과 충전을 반복하여 사용하므로 전지를 장기간 사용할 수 있다. 그러나 충전 및 방전을 반복하게 되면 극판이 손상을 입거나 사용자의 실수로 인하여 성능저하가 일어나게 되며, 이로 인하여 연결된 기기의 손상을 일으키는 경우까지 발생하게 된다. 이를 방지하기 위하여 대량의 전지 사용처에서는 일정기간이 경과하거나 사용 중 전압이 기준 이하의 상태가 되면 전지의 성능에 관계없이 새로운 전지로 전부 교체를 하게 된다. Secondary batteries such as lead acid batteries can be used for a long time because they are repeatedly used for discharging and charging. However, if charging and discharging are repeated, the pole plate may be damaged or a performance error may occur due to a user's mistake, which may cause damage to the connected device. In order to prevent this, a large number of batteries are used to replace all batteries with a new battery regardless of the performance of the battery when a certain period of time passes or the voltage during use becomes below the reference level.
이와같이 현재 사용 가능한 전지의 폐기로 인한 환경오염과 자원 낭비로 인한 경제적 손실이 발생하고 있다.As such, economic losses are caused by environmental pollution and waste of resources due to the disposal of currently available batteries.
이를 위하여 다수의 특허로 2차 전지의 감시 장치가 개발되어 있으나 현재의 상태 만을 사용자에게 통보하는 기능이 대부분이거나 감시 장치에 부착된 MCU의 성능이 대량의 자료 처리에 많은 시간을 필요로 하는 고난이도의 처리 프로세스 구현이 불가능하여 단시간 내에 측정된 전압과 전류, 온도등의 자료만 활용하여 전지의 성능을 표시하고 있는 실정이다. 이는 전지의 특성, 충전기 특성, 자연방전 등과 같은 요소를 배제하게 되므로 실제 전지의 성능과 차이가 나는 결과를 표시하고 있다. 이를 보완하기 위해 방전장치를 부착하여 전지의 성능으로 측정하고 있으나 방전장치의 운영으로 인해 전지에 연결된 기기가 파손되는 사례도 발생하고 있으며, 이를 방지하기 위하여 전지에 연결된 기기와 분리하여 측정을 하고 있으나 고중량 전지의 이동작업으로 인한 사고발생과 불필요한 인력소모가 발생하고 있는 상황이며, 상시 전원이 필요한 연결기기를 부착한 경우에는 분리측정이 불가능한 실정이다. 또한 2차 전지는 충전과 방전을 반복하여 사용할 수 있으나 충전기 파손으로 인하여 충전이 불가능한 상태가 되거나 사용자가 실수로 충전하지 않고 사용하는 사례도 발생하고 있다. 이는 전지의 과방전 상태를 초래함으로써 전지의 성능을 급격하게 저하시켜 전지를 파손시키고 전지와 연결된 기기의 파손을 유발하기도 한다.
To this end, a number of patents have developed secondary battery monitoring devices, but most of them have a function of notifying the current state only, or the performance of the MCU attached to the monitoring device requires a lot of time to process a large amount of data. As it is impossible to implement the treatment process, only the voltage, current, and temperature measured in a short time are used to display the performance of the battery. This excludes factors such as battery characteristics, charger characteristics, and natural discharge, and thus shows results that differ from actual battery performance. To compensate for this, the discharge device is attached to measure the performance of the battery, but there are cases where the device connected to the battery is damaged due to the operation of the discharge device.In order to prevent this, the measurement is performed separately from the device connected to the battery. Accidents and unnecessary manpower consumption are caused by the movement of heavy batteries, and separate measurement is not possible when a connected device is required. In addition, secondary batteries can be repeatedly used for charging and discharging. However, due to the breakage of the charger, charging becomes impossible or there are cases where the user uses the battery without accidental charging. This results in an over-discharge state of the battery, which drastically degrades the battery's performance, causing damage to the battery and causing damage to the device connected to the battery.
본 발명에서는 2차 전지의 전압, 전류 상태를 상시 측정한 후 이를 연속되는 곡선으로 추출한 다음 수학적 모델링 방법으로 연산처리한 후 나온 결과를 이용하여 보다 정확하게 전지의 성능을 측정하고자 한 것이다.In the present invention, the voltage and current state of the secondary battery is always measured, and then extracted as a continuous curve, and then calculated using a result of the calculation process by a mathematical modeling method to more accurately measure the performance of the battery.
또한 본 발명은 연속 측정 되어진 전압곡선에서 전지의 충전요구 시점을 정확하게 산출하여 사용자에게 통보하고자 한 것이다.In addition, the present invention is to notify the user by accurately calculating the time point for charging the battery in the continuously measured voltage curve.
본 발명에서는 2차 전지의 잔여용량을 알기 위해서 전압, 전류 등의 자료를 일정한 주기로 측정한 후 이를 충전전압곡선, 사용방전전압곡선, 자연방전전압곡선으로 분리한다. 구하여진 각 곡선에서 곡선 값을 미분하고, 미분하여 산출된 값을 기초로 충,방전 사이클에 따른 변화를 계산한다.In the present invention, in order to know the remaining capacity of the secondary battery, data such as voltage and current are measured at regular intervals and then divided into charge voltage curves, used discharge voltage curves, and natural discharge voltage curves. Differentiate the curve value from each curve and calculate the change according to the charge / discharge cycle based on the calculated value.
계산된 결과를 전지에 연결된 기기의 전류 소모량과 비교 분석하여 전지의 사용한계시점을 산출한다. The calculated results are compared with the current consumption of the equipment connected to the battery to calculate the usage time of the battery.
이를 위하여 전압, 전류, 온도의 감지센서와 자료저장 장치, MCU등이 장착된 기판을 제작하여 전지에 부착한 후 전지의 특성이나 사용 환경에 따라 10초에서 300초 단위의 주기로 측정된 전압, 전류, 온도, 측정일자 및 시간등의 자료를 유무선 장치를 통하여 퍼스널 컴퓨터에 전송하게 한다.To this end, a board equipped with a sensor, data storage device, MCU, etc., for voltage, current, and temperature is manufactured and attached to the battery. Transfer data such as temperature, measurement date and time to your personal computer via wired or wireless devices.
현재 통상적으로 사용 중인 MCU의 성능과 용량을 감안하여 측정 장치는 자료 전송작업만을 수행하고 성능과 용량이 우수한 퍼스널 컴퓨터에서 자료를 전송받아 이를 수치화하고 저장한 후 100회 이상의 충, 방전 사이클 기간에 걸쳐 측정된 자료를 이용하여 수학적 모델링을 통해 현재의 전지 성능을 정확하게 계산하도록 한다.In consideration of the performance and capacity of the MCU currently in use, the measurement device performs data transmission only, receives data from a personal computer with high performance and capacity, quantifies and stores it, and then over 100 charge and discharge cycles. Using the measured data, mathematical modeling allows accurate calculation of current cell performance.
이를 위하여 퍼스널 컴퓨터로는 다수의 수신된 자료를 수치화하여 저장하는 기능의 프로세서 제어코드를 작성하고, 저장된 자료를 수학적 모델링에 의해 처리하는 기능의 연산 프로세스의 제어코드를 사용하여 처리한다. 처리된 결과에 의해 산출된 전지의 수명에 관한 자료를 사용자에게 제시하여 이에 따른 조치를 하도록 하는 기능의 관리 프로세스 제어코드를 작성하고 실시간으로 전지의 전압을 측정하여 충전요구 상태 발생 시 또는 충전기의 이상 발생시 사용자에게 즉시 단문 문자서비스를 제공하는 기능의 감시 프로세스의 제어 코드를 제작하여 사용하며, 각각의 작성된 프로세서의 관리를 효율적으로 운영하는 제어코드에 의한 전지 통합관리시스템을 구성하여 해결하도록 한다.
To this end, a personal computer generates a processor control code having a function of digitizing and storing a plurality of received data, and processes it using a control code of a computing process having a function of processing the stored data by mathematical modeling. Write control process control code of the function to present the data on the life of the battery calculated by the processed result to the user and take action accordingly, and measure the voltage of the battery in real time to generate a charge request condition or abnormality of the charger. In case of occurrence, the control code of the monitoring process with the function of providing the short text service to the user is produced and used, and the integrated battery management system by the control code that efficiently manages the management of each written processor is configured.
이와 같은 발명을 적용하면 기존의 방법으로 부정확하게 산출된 전지의 성능 측정으로 인한 조기에 폐기되던 전지의 사용시간을 연장시킬 수 있으며, 충전기의 기능 이상 및 사용자의 실수로 인해 전지가 미충전 상태로 사용됨으로써 파손되는 것을 방지할 수 있다. 또한 종전에 수작업으로 하던 전지상태 점검이 가능하여 불량전지를 조기에 발견할 수 있으며, 이로 인한 사고를 미연에 방지할 수 있다. 그리고 전지 사용기간 연장 등으로 인해 환경오염과 자원의 낭비를 줄일 수 있고 사용자의 경제적 손실도 최소화할 수 있다.
By applying this invention, it is possible to prolong the service time of the battery which was discarded early due to the measurement of the battery's performance incorrectly calculated by the conventional method, and the battery is not charged due to the malfunction of the charger and the user's mistake. It can be prevented from being damaged by using it. In addition, it is possible to check the condition of the battery, which was done by manual operation, so that the defective battery can be found early, and the accident caused by this can be prevented in advance. In addition, it is possible to reduce environmental pollution and waste of resources due to the extended battery life, and to minimize the economic loss of users.
대표도 는 본 발명 2차 전지 통합 관리 시스템의 구성을 나타낸 도면.
도1 는 본 발명에 있어서 측정자료 송신 시스템의 MCU와 다수의 전지중 하나를 선택하여 전압을 측정하는 회로를 나타내는 도면.
도2 은 본 발명에 있어서 측정자료 송신 시스템의 전압과 전류를 측정하는 회로를 나타내는 도면
도3 는 본 발명에 있어서 측정자료 송신 시스템의 전원회로를 나타내는 도면.The representative figure is a figure which shows the structure of this invention secondary battery integrated management system.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a circuit for measuring voltage by selecting one of a MCU and a plurality of batteries of a measurement data transmission system according to the present invention.
2 is a view showing a circuit for measuring the voltage and current of the measurement data transmission system in the present invention;
3 is a diagram showing a power supply circuit of a measurement data transmission system according to the present invention.
1. 첨부된 도면에 따라 제조된 전자회로기판으로 전지의 전압, 전류 등을 일정시간 단위로 측정하여 무선 또는 유선의 방식을 사용하여 퍼스널 컴퓨터로 전송한다.1. The electronic circuit board manufactured according to the attached drawings measures the voltage, current, etc. of the battery by a certain unit of time and transmits it to a personal computer using a wireless or wired method.
2. 측정장치로부터 전송받은 자료를 퍼스널 컴퓨터에서 수치화한 후 저장한다.2. Digitize and save the data received from the measuring device on the personal computer.
3. 저장되어진 전압을 충전 전압부분, 자연방전 전압부분, 사용 전압부분으로 각각 특성에 맞게 분류한다.3. The stored voltage is classified into the charging voltage part, the natural discharge voltage part, and the used voltage part according to their characteristics.
4. 검출된 3가지 특성의 전압을 산술적인 그래프로 도식화한 후 각각의 곡선에 대한 미분 곡선을 산출한다.4. Schematically plot the voltages of the three characteristics detected and compute the differential curve for each curve.
5. 구하여진 미분곡선을 사이클 치수에 따라 나열하여 전지의 사용기간 사이의 상태변화 곡선을 구한다. 5. List the obtained differential curves according to the cycle dimensions to find the curve of the state change between the service life of the battery.
6. 위에 구하여진 3개의 상태변화 곡선에 의하여 2차 전지에 연결된 사용기기에서 필요한 전류사용량을 비교 분석하여 전지의 성능한계점을 산출한다. 6. Calculate the performance limit of the battery by comparing and analyzing the required current consumption in the equipment connected to the secondary battery based on the three state change curves obtained above.
7. 위의 계산에 의해 성능한계점을 사용자에게 통보하여 미리 대처 방안을 준비하도록한다.7. Prepare the countermeasure in advance by notifying the user of the performance limit by the above calculation.
8. 다수의 직렬 연결된 전지에서 5번 방법에 의해 산출된 개별의 상태변화곡선에 의하여 타전지 보다 상태저하가 심하거나 파손된 전지를 검출하고 교체하여 결합된 전지의 2차 파손을 방지한다.8. In case of multiple series-connected batteries, the individual state change curve calculated by the
9. 위의 3번 방법에 의해 측정되어진 자연방전 전압과 사용 방전전압이 사용자가 원하는 전압 이하가 될 경우 사용자에게 충전통보를 한다.
9. Notify the user when the natural discharge voltage and the discharge voltage measured by the above method are less than the desired voltage.
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