KR19980077074A - Detecting Aging Condition of Electric Vehicle Battery - Google Patents
Detecting Aging Condition of Electric Vehicle Battery Download PDFInfo
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- KR19980077074A KR19980077074A KR1019970014043A KR19970014043A KR19980077074A KR 19980077074 A KR19980077074 A KR 19980077074A KR 1019970014043 A KR1019970014043 A KR 1019970014043A KR 19970014043 A KR19970014043 A KR 19970014043A KR 19980077074 A KR19980077074 A KR 19980077074A
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- aging
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- full charge
- electric vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/30—Sensors
- B60Y2400/308—Electric sensors
- B60Y2400/3086—Electric voltages sensors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Abstract
본 발명은 전기자동차의 배터리에 있어 오랜사용에 따른 방전과 재충전을 반복하는 싸이클에 있어 만충전후의 사용시 초기전압을 감지하여 이 초기전압치의 변화에 따라 에이징상태를 검출할 수 있도록 하는 전기자동차 배터리의 에이징상태 검출방법에 관한 것이다.The present invention provides a battery for an electric vehicle battery that detects an initial voltage during use after full charge and detects an aging state according to a change in the initial voltage value in a cycle of discharging and recharging according to long use in an electric vehicle battery. An aging state detection method.
종래에 배터리의 잔존용량을 검출하는 방법에서는 배터리의 에이징인지들이 고려되고는 있지만, 전기자동차의 특성상 실 사용자의 주행패턴을 충분히 맞추어줄 수 있는 적합한 에이징요소들이 연구되고 있지 못하는 실정이다.Conventionally, in the method of detecting the remaining capacity of the battery, whether the aging of the battery has been considered, but due to the characteristics of the electric vehicle, suitable aging factors that can sufficiently fit the driving pattern of the actual user has not been studied.
본 발명은 배터리단품에 대한 방전과 충전을 반복하면서 충전횟수에 대한 만충전전압을 감지하여 만충전전압의 변화에 대한 일련의 에이징레벨을 검출하여 에이징인자로서 저장하는 과정과, 차량 사용시 만충전후 차량 시동과 동시에 배터리의 전압을 감지하는 과정, 상기 과정에서 감지된 배터리의 전압레벨을 상기 에이징인자의 에이징레벨과 비교하여 에이징상태를 검출하도록 이루어진 발명임.The present invention detects the full charge voltage for the number of charges while repeatedly discharging and charging the battery components, detects a series of aging levels for the change of the full charge voltage, and stores them as an aging factor. The process of sensing the voltage of the battery at the same time as starting, the invention is configured to detect the aging state by comparing the voltage level of the battery detected in the process with the aging level of the aging factor.
Description
본 발명은 배터리의 잔존용량을 검출하기 위하여 에이징상태를 검출하는 전기자동차 배터리의 에이징상태 검출방법에 관한 것으로, 더욱 상세하게는 전기자동차의 배터리에 있어 오랜사용에 따른 방전과 재충전을 반복하는 싸이클에 있어 만충전후의 사용시 초기전압을 감지하여 이 초기전압치의 변화에 따라 에이징상태를 검출할 수 있도록 하는 전기자동차 배터리의 에이징상태 검출방법에 관한 것이다.The present invention relates to a method for detecting an aging state of an electric vehicle battery for detecting an aging state in order to detect a remaining capacity of the battery. More particularly, the present invention relates to a cycle for repeatedly discharging and recharging according to a long use in an electric vehicle battery. The present invention relates to a method for detecting an aging state of an electric vehicle battery, which detects an initial voltage during full charge and detects an aging state according to the change of the initial voltage value.
일반적으로 자동차에는 초기 엔진시동시 스타터 모터의 구동이나 기타 전장품에 필요한 전류의 공급을 위해 배터리가 장착되어 있고, 또한 최근의 자동차개발추세로서는 대기오염에 심각한 영향을 주고 있는 현재의 가솔린이나 중유를 주연료로 사용하여 이의 연소에 의한 폭발력으로 주행할 수 있는 동력을 얻도록 된 차량대신에 공해발생이 적은 차량을 개발하기 위하여 많은 연구가 이루어지고 있는 바, 그중 하나로서 전력에 의하여 움직이는 전기자동차의 개발에 많은 노력을 기울이고 있다.In general, automobiles are equipped with batteries for supplying the electric current required for driving starter motors or other electronic devices during initial engine start-up, and the recent development trend of automobiles is based on the current gasoline or heavy oil, which seriously affects air pollution. A lot of research is being done to develop a vehicle with less pollution instead of a vehicle that can be used as fuel to drive power by explosive power due to its combustion. Among them, the development of an electric vehicle driven by electric power is one of them. I'm working hard on that.
전기자동차는 구동연료로서 대개 2차전지인 납축전지를 사용하고 있으며, 납축전지에서 출력되는 전원으로 동력발생장치를 구동시키고 이를 동력전달장치를 통해 구동휠로 전달하여 구동휠을 회전시키므로써 전기자동차를 구동시키게 된다.Electric vehicles usually use lead acid batteries, which are secondary batteries, as a driving fuel, and drive electric power generators with power output from lead acid batteries, and transmit them to the driving wheels through the power transmission device to rotate the driving wheels. Will be driven.
이러한 납축전지는 각각 다른 금속으로 만든 양극과 음극의 전극과 전해액으로 구성되어 있으며, 양 극에 부하를 연결하여 각 전극의 작용물질과 전해액이 가지는 화학적 에너지를 전기적 에너지로 끌어 낼 수 있게 되어 있다. 또한 역으로 전기적 에너지를 주면 다시 화학적 에너지를 가진 본래의 작용 물질로 되돌아가게 된다.These lead-acid batteries are composed of electrodes and electrolytes of a positive electrode and a negative electrode made of different metals, and by connecting a load to the positive electrode, it is possible to draw chemical energy of the working material and electrolyte of each electrode into electrical energy. Conversely, giving electrical energy back to the original working material with chemical energy.
이와 같은 축전지에 있어 방전이 진행됨에 따라 양극과 음극간의 단자전압은 점차로 내려가다가 어느 한도에 이르게 되면 급격히 저하하여 방전종지전압에 이르게 되며 그 이후 부터는 방전능력이 없어진다.As the discharge progresses in such a battery, the terminal voltage between the positive electrode and the negative electrode gradually decreases and reaches a certain limit, and then rapidly decreases to reach the discharge end voltage, and thereafter, the discharge capacity is lost.
방전종지전압 이하에서까지 방전하게 되면 전해액과 화학적 반응을 일으켜 전류를 생성하는 극판이 손상되어 축전지로서의 기능을 상실하게 된다.If the discharge is carried out below the discharge end voltage, the electrode plate which is chemically reacted with the electrolyte to generate a current is damaged and loses its function as a storage battery.
따라서 전기자동차는 배터리에 충전되어 있는 용량(Ah)만큼 주행할 수 있고, 주행중 구동휠의 회전력을 역이용하여 발전을 한 후 다시 재충전시키면서 사용할 수 있도록 하고 있으며, 배터리가 완전히 방전될 정도까지 차를 운행하다 주행중 정지하게 되면 재충전에 어려움이 있어 곤란하므로 주행중 배터리의 잔존용량(SOC ; State of Charge)을 정확하게 파악하는 것이 중요하다.Therefore, the electric vehicle can drive as much as the capacity (Ah) charged in the battery, use the rotational force of the driving wheel while driving to generate power and then recharge it, and operate the car until the battery is completely discharged. When stopping while driving, it is difficult to recharge, so it is important to know the state of charge (SOC) of the battery while driving.
현재 잔존용량을 체크하는 방법으로는 전지 전압으로 잔존용량을 확인하는 방법이 있는데, 이러한 방법은 방전량에 따라 전압이 감소 즉 급가속시 잔존용량에 무관하게 전압이 순간적으로 감소하므로 적용에 문제가 있고, 또다른 방법으로서 방전용량으로 잔존용량을 확인하는 방법 등이 있는데 이러한 방법에 있어서도 방전용량(Ah)으로 잔존용량을 확인하는 법 즉 방전작용에 따라 방전된 Ah의 값을 측정하는 것은 몇 Km로 정속 주행했는지 또는 시내주행을 했는지 등과 같은 부하조건에 따라 전지가 사용할 수 있는 용량(Ah)이 다르므로 잔존용량을 확인하기 위한 알고리즘이 무척 까다롭게 된다.As a method of checking the current remaining capacity, there is a method of checking the remaining capacity by battery voltage. This method has a problem in that the voltage decreases according to the discharge amount, that is, the voltage decreases instantaneously regardless of the remaining capacity during rapid acceleration. As another method, there is a method of confirming the remaining capacity by the discharge capacity. Also in this method, the method of checking the remaining capacity by the discharge capacity (Ah), that is, measuring the value of Ah discharged by the discharge action is several Km. Since the available battery capacity (Ah) varies depending on the load conditions, such as whether the vehicle is driving at constant speed or driving in the city, the algorithm for checking the remaining capacity becomes very difficult.
이와 같이 종래에 배터리의 잔존용량을 검출하는 방법에서는 배터리의 에이징인지들이 고려되고는 있지만, 전기자동차의 특성상 실 사용자의 주행패턴을 충분히 맞추어줄 수 있는 적합한 에이징요소들이 연구되고 있지 못하는 실정이다.As described above, in the conventional method of detecting the remaining capacity of the battery, aging whether the battery is taken into consideration, but due to the characteristics of the electric vehicle, suitable aging elements that can sufficiently fit the driving pattern of the actual user have not been studied.
본 발명은 상기한 사정을 감안하여 발명한 것으로, 전기자동차에 있어 차량의 운행에 의한 배터리의 사용에 따라 방전과 충전을 반복하는 일련의 과정에 있어서 만충전후 사용시의 초기전압을 감지함으로써 초기전압치의 변화에 따라 배터리의 에이징상태를 판단할 수 있도록 하는 전기자동차 배터리의 에이징상태 검출방법을 제공하고자 함에 발명의 목적이 있다.The present invention has been invented in view of the above circumstances, and in the series of processes of repeating discharging and charging in accordance with the use of a battery by driving a vehicle in an electric vehicle, the initial voltage value is detected by detecting the initial voltage during full charge. An object of the present invention is to provide a method for detecting an aging state of an electric vehicle battery, which enables the determination of an aging state of a battery according to a change.
상기한 목적을 실현하기 위한 본 발명은 차량에 장착될 배터리의 단품에 대해 모델링하여 방전과 충전을 반복하면서 충전횟수에 대한 만충전전압을 감지하고, 만충전전압의 변화에 대한 인자를 결정하여 이를 에이징인자로 검출함으로써 배터리의 에이징상태를 검출할 수 있도록 이루어진 것이다.The present invention for realizing the above object is to model the unit of the battery to be mounted on the vehicle to detect the full charge voltage for the number of charges while repeating the discharge and charging, and determine the factor for the change of the full charge voltage By detecting the aging factor, it is possible to detect the aging state of the battery.
도 1은 배터리의 모델을 나타내는 도면,1 is a view showing a model of a battery,
도 2는 충방전횟수(에이징)의 증가에 따라 만충전전압이 점차 감소함을 나타내는 그래프,2 is a graph showing that the full charge voltage gradually decreases as the number of charge / discharge cycles (aging) increases.
도 3은 본 발명을 구현하기 위한 구성도이다.3 is a block diagram for implementing the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 - 차량제어기, 12 - 충전기,10-vehicle controller, 12-charger,
14 - 시동감지부, Ep- 배터리모델링의 전압원,14-start detector, E p -voltage source for battery modeling,
R - 배터리모델링의 저항성분.R-Resistive component of battery modeling.
본 발명은 배터리단품에 대한 방전과 충전을 반복하면서 충전횟수에 대한 만충전전압을 감지하여 만충전전압의 변화에 대한 일련의 에이징레벨을 검출하여 에이징인자로서 저장하는 과정과, 차량 사용시 만충전후 차량 시동과 동시에 배터리의 전압을 감지하는 과정, 상기 과정에서 감지된 배터리의 전압레벨을 상기 에이징인자의 에이징레벨과 비교하여 에이징상태를 검출하도록 이루어진 것이다.The present invention detects the full charge voltage for the number of charges while repeatedly discharging and charging the battery components, detects a series of aging levels for the change of the full charge voltage, and stores them as an aging factor. The process of sensing the voltage of the battery at the same time as the start-up, it is made to detect the aging state by comparing the voltage level of the battery detected in the process with the aging level of the aging factor.
도 1은 배터리의 모델링을 나타내는 도면이다.1 is a diagram illustrating modeling of a battery.
여기서 Ep는 전압원으로써 배터리가 낼 수 있는 총에너지를 나타내고, R은 배터리 내부의 확산(diffusion)이나 옴반응에서 나타나는 저항의 합을 나타낸다.Where E p represents the total energy that the battery can produce as a voltage source, and R represents the sum of the resistances in the diffusion or ohmic reactions inside the battery.
이러한 배터리의 모델링에 있어 에이징에 따라 만충전이 되더라도 Ep즉 전압원에서 낼 수 있는 전압 즉 에너지는 충방전이 거듭될수록 점차 줄어들게 된다.In the modeling of such a battery, even though it is fully charged by aging, E p, that is, the voltage that can be output from a voltage source, or energy, gradually decreases as charging and discharging are repeated.
이에 대한 예가 도 2에 도시되어 있다.An example of this is shown in FIG. 2.
여기서 가로축은 충방전의 반복에 따른 증가 즉 에이징상태를 나타내고, Vfc를 나타내는 세로축은 만충전시 전압 또는 만충전후 순간부하의 전압을 각각 나타내는 것이다.In this case, the horizontal axis represents an increase, aging state according to repetition of charging and discharging, and the vertical axis representing V fc represents the voltage at full charge or the voltage at the instant load after full charge, respectively.
첨부된 표 1은 만충전전압의 변화(감소)에 따른 에이징레벨과 에이징인자간의 비례표를 나타내는 것이다.The attached Table 1 shows a proportional table between the aging level and the aging factor according to the change (decrease) of the full charge voltage.
예컨대 배터리가 신규의 것일 때 검출되는 만충전 전압이 13 V이라 하면 이때의 에이징정도를 0% 그리고 에이징인자를 A1이라 한다. 이와 마찬가지의 방법으로 방전후 재충전시 만충전되었을때의 전압에 대해 재충전횟수에 대한 에이징정도와 에이징인자를 구하는 과정을 반복하면서 차량에서 배터리를 거의 사용할 수 없을 정도에 이르를때 까지 재충전의 반복에 따른 만충전전압에 대한 에이징정도와 에이징인자를 구하는 과정을 반복한다.For example, if the full charge voltage detected when the battery is new is 13 V, the aging degree at this time is 0% and the aging factor is A 1 . In the same way, the process of obtaining the aging factor and the aging factor for the number of recharges for the voltage when fully charged after discharge is repeated until the battery is almost unusable in the vehicle. The process of obtaining the aging factor and aging factor for the full charge voltage is repeated.
이와 같이 하여 검출된 값을 도표화한 것이 표 1인데, 만충전전압 Vfc는 재충전 횟수가 반복될수록 점차 감소하며, 예컨대 만충전전압이 9 V에 이르게 되면 그 배터리는 수명이 다한것으로 하며 그때의 에이징정도를 100%라 한다.Table 1 shows a table of the detected values. The full charge voltage V fc gradually decreases as the number of recharges is repeated. For example, when the full charge voltage reaches 9 V, the battery is at the end of its life. The degree is called 100%.
결국 재충전횟수에 따른 만충전전압의 감소에 따라 에이징상태를 백분율로 나타낼 수 있게 되고, 또한 백분율의 단게적 변화에 대해 에이징인자를 설정할 수 있다. 이때의 에이징인자 A1… An은 100단계의 등급으로 또는 필요에 따라 그 이상이나 이하로 설정할 수 있다.As a result, as the full charge voltage decreases according to the number of recharges, the aging state can be expressed as a percentage, and an aging factor can be set for a simple change in the percentage. Aging factor A 1 . A n can be set to a level of 100 steps or more or less as required.
이와 같이하여 설정된 에이징인자를 도 3에 도시된 바와 같이 전기자동차의 전반적인 제어동작을 수행하는 차량제어기(10)에 저장하여 놓고, 차량의 운행에 따라 방전된 배터리를 재충전할때 충전기(12)에서는 만충전신호를 차량제어기(10)로 송출한다.The aging factor set in this way is stored in the vehicle controller 10 performing the overall control operation of the electric vehicle as shown in FIG. 3, and the charger 12 recharges the discharged battery according to the operation of the vehicle. The full charge signal is sent to the vehicle controller 10.
차량제어기(10)에서는 충전기(12)로 부터 만충전신호가 입력된이후 시동감지부(14)로 부터 처음 엔진시동이 감지되면 배터리에 걸리는 부하로 인해 전압(초기 만충전전압)을 검출한다.The vehicle controller 10 detects a voltage (initial full charge voltage) due to the load on the battery when the engine start is detected from the start detection unit 14 after the full charge signal is input from the charger 12.
이순간 차량제어기(10)는 현재 검출된 전압을 사전에 설정해 놓은 에이징비례표와 비교함으로써 에이징인자를 검출할 수 있게 된다.At this moment, the vehicle controller 10 can detect the aging factor by comparing the current detected voltage with a pre-set aging proportional table.
상기한 바와 같이 본 발명은 위와 같은 방법으로 에이징인자를 검출하여 잔존용량계산에 반영게 되면 현재의 배터리 잔존용량을 비교적 정확하게 산출할 수 있게 되고, 또한 에이징인자에 비례하여 배터리 에이징표시장치를 구동하는데 이용하게 되면 사용자는 배터리의 교체시기를 예상할 수 있게 되어 차량을 효율적으로 관리할수도 있게 된다.As described above, according to the present invention, when the aging factor is detected and reflected in the remaining capacity calculation, the present invention can calculate the current battery remaining capacity relatively accurately and also drive the battery aging display device in proportion to the aging factor. When used, the user can predict when to replace the battery, so that the vehicle can be efficiently managed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101330410B1 (en) * | 2012-10-31 | 2013-11-15 | 주식회사 현대케피코 | Bms(battery management system) aging test for hev and ev |
| US20220200295A1 (en) * | 2020-12-23 | 2022-06-23 | Medtronic, Inc. | Systems and method for charging batteries |
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| KR101330410B1 (en) * | 2012-10-31 | 2013-11-15 | 주식회사 현대케피코 | Bms(battery management system) aging test for hev and ev |
| US20220200295A1 (en) * | 2020-12-23 | 2022-06-23 | Medtronic, Inc. | Systems and method for charging batteries |
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