WO2019245215A1 - Dispositif de mesure de courant, procédé de mesure de courant et bloc-batterie comprenant un dispositif de mesure de courant - Google Patents

Dispositif de mesure de courant, procédé de mesure de courant et bloc-batterie comprenant un dispositif de mesure de courant Download PDF

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Publication number
WO2019245215A1
WO2019245215A1 PCT/KR2019/007013 KR2019007013W WO2019245215A1 WO 2019245215 A1 WO2019245215 A1 WO 2019245215A1 KR 2019007013 W KR2019007013 W KR 2019007013W WO 2019245215 A1 WO2019245215 A1 WO 2019245215A1
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WO
WIPO (PCT)
Prior art keywords
current value
current
switching circuit
voltage
shunt resistor
Prior art date
Application number
PCT/KR2019/007013
Other languages
English (en)
Korean (ko)
Inventor
이원태
최양림
Original Assignee
주식회사 엘지화학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020190064721A external-priority patent/KR20200000341A/ko
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to ES19823590T priority Critical patent/ES2970633T3/es
Priority to EP19823590.5A priority patent/EP3734307B1/fr
Priority to US16/767,219 priority patent/US11415633B2/en
Priority to JP2020524594A priority patent/JP7071013B2/ja
Priority to CN201980006148.7A priority patent/CN111433618B/zh
Publication of WO2019245215A1 publication Critical patent/WO2019245215A1/fr

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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
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/08—Measuring resistance by measuring both voltage and current
    • 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]
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to an apparatus and method for measuring a current flowing through a charge and discharge path of a battery pack, and a battery pack including the device.
  • lithium batteries have almost no memory effect compared to nickel-based batteries, and thus are free of charge and discharge, and have a very high self discharge rate. Its low and high energy density has attracted much attention.
  • a shunt resistor In order to measure the current flowing through the battery, a shunt resistor can be installed in the charge / discharge path for the battery.
  • the current measured using the shunt resistor element is essential for determining the overcurrent or estimating the state of charge (SOC) and the state of health (SOH) of the battery.
  • the reference resistance is predetermined in consideration of the material, size and shape of the shunt resistor element. However, when the shunt resistor element is gradually degraded over time or damaged by vibration and shock, the actual resistance of the shunt resistor element has a large difference from the reference resistance.
  • the international standard for automotive safety the current measured by a current sensor with a shunt resistor is relied on to satisfy the highest class D of the four classes of Automotive Safety Integrity Level (ASIL). It is necessary to determine whether it is possible (ie, the current sensor is normal). Conventionally, current measurement results are compared with current measured by another current sensor (for example, Hall effect current sensor), thereby achieving reliability of the current measurement result.
  • ASIL Automotive Safety Integrity Level
  • the present invention has been made to solve the above problems, an apparatus and method for diagnosing whether a shunt resistor element installed in a charge / discharge path for a battery is in a normal state without an additional current sensor, and the device.
  • An object of the present invention is to provide a battery pack including a.
  • the current measuring device is for measuring a current flowing through a charge / discharge path for a battery.
  • the current measuring device may include a switching circuit installed in the charge / discharge path; A current measuring unit including a shunt resistor element disposed in the charge / discharge path, and configured to output a current signal corresponding to a voltage across both ends of the shunt resistor element; A voltage measuring unit configured to measure a voltage across the switching circuit; A temperature measuring unit configured to measure a temperature of the switching circuit; And a control unit operatively coupled to the switching circuit, the current measuring unit, the voltage measuring unit, and the temperature measuring unit.
  • the controller is configured to determine a first current value representing a current flowing through the shunt resistor element based on the current signal.
  • the controller is configured to determine a second current value representing a current flowing through the switching circuit based on the measured voltage and the measured temperature.
  • the control unit is configured to determine whether the shunt resistor element is in a steady state based on the first current value and the second current value.
  • the controller may be configured to determine an on-resistance of the switching circuit based on the measured temperature.
  • the second current value is a value obtained by dividing the measured voltage by the on-resistance.
  • the current measuring device may further include a memory device in which a look-up table in which a corresponding relationship between temperature of the switching circuit and on-resistance is recorded is stored.
  • the controller may be configured to determine the on-resistance recorded as associated with the measured temperature from the lookup table as the on-resistance of the switching circuit, using the measured temperature as an index.
  • the controller may be configured to determine a third current value representing a current flowing through the charge / discharge path based on the first current value and the second current value.
  • the controller may be configured to determine any one of the first current value, the second current value, and an average of the first current value and the second current value when a difference between the first current value and the second current value is within a normal range. It may be configured to determine one as the third current value.
  • the controller may be configured to determine the second current value as the third current value when a difference between the first current value and the second current value is out of a normal range.
  • the controller may be configured to output a fault message when a difference between the first current value and the second current value is out of a normal range.
  • the controller may be configured to determine the normal range based on the measured temperature.
  • the control unit may be configured to enlarge the normal range as the measured temperature decreases.
  • a battery pack according to another aspect of the present invention includes the current measuring device.
  • a method for measuring a current flowing through a charge / discharge path for a battery.
  • the method includes measuring a voltage across both ends of a switching circuit installed in the charge / discharge path; Measuring a temperature of the switching circuit; Determining a first current value representing a current flowing through the shunt resistor element based on a voltage across the shunt resistor element provided in the charge / discharge path; Determining a second current value indicative of a current flowing through the switching circuit based on the measured voltage and the measured temperature; And determining whether the shunt resistor element is in a normal state based on the first current value and the second current value.
  • the second current value may be a value obtained by dividing the measured voltage by an on-resistance associated with the measured temperature.
  • the determining whether the shunt resistor element is in a normal state when the difference between the first current value and the second current value is within a normal range, it may be determined that the shunt resistor element is in a normal state.
  • FIG. 1 is a view schematically showing a functional configuration of a current measuring device according to an embodiment of the present invention.
  • FIG. 2 is a diagram schematically illustrating a configuration of a battery pack including the current measuring device of FIG. 1.
  • FIG. 3 exemplarily shows a first lookup table associated with the switching circuit of FIGS. 1 and 2.
  • FIG. 5 is a flowchart schematically showing a current measuring method according to another embodiment of the present invention.
  • control unit> means a unit for processing at least one function or operation, and may be implemented in hardware, software, or a combination of hardware and software.
  • FIG. 1 is a view schematically showing a functional configuration of a current measuring device according to an embodiment of the present invention
  • Figure 2 is a view schematically showing the configuration of a battery pack including the current measuring device of FIG.
  • the battery pack P includes a battery 10, a switching circuit 50, and a current measuring device 1 (hereinafter, referred to as an “device”).
  • the battery 10 includes at least one battery cell.
  • the plurality of battery cells may be electrically connected in series or in parallel with each other.
  • the switching circuit 50 may include at least one charge switch and at least one discharge switch. Each charge switch may be electrically connected in series to each discharge switch. When the plurality of charging switches are included in the switching circuit 50, the plurality of charging switches may be electrically connected in parallel. When the plurality of discharge switches are included in the switching circuit 50, the plurality of discharge switches may be electrically connected in parallel.
  • Each charging switch can control the current flowing in the direction for charging the battery 10.
  • each charge switch is located between the positive terminal of the battery 10 and the positive terminal of the battery pack P, and is a current flowing from the positive terminal of the battery pack P to the positive terminal of the battery 10. The amount of charge current can be adjusted.
  • Each discharge switch can control the current flowing in the direction for discharging the battery 10.
  • each discharge switch is located between the positive terminal of the battery 10 and the positive terminal of the battery pack P, and is a current flowing from the positive terminal of the battery 10 to the positive terminal of the battery pack P. The magnitude of the discharge current can be adjusted.
  • each charge switch and each discharge switch may be a field effect transistor (FET) including gate, drain, and source terminals.
  • FET field effect transistor
  • the FET can be turned on or off depending on the magnitude of the voltage applied between the gate terminal and the source terminal.
  • the device 1 is provided to measure the current flowing through the charge / discharge path for the battery 10.
  • the apparatus 1 includes a voltage measuring unit 100, a temperature measuring unit 200, a current measuring unit 300, and a control unit 400.
  • the apparatus 1 may further include a memory device 500.
  • the voltage measuring unit 100 may be electrically connected to both ends of the switching circuit 50. That is, the voltage measuring unit 100 may be electrically connected to the switching circuit 50 in parallel so as to measure the voltage across the switching circuit 50.
  • the voltage measuring unit 100 may measure the potential difference between one end and the other end of the switching circuit 50 as the voltage of the switching circuit 50.
  • one end of each charge switch is electrically connected to the positive terminal of the battery 10
  • one end of each discharge switch is electrically connected to the positive terminal of the battery pack P, and the other of each charge switch is different.
  • the potential difference between one end of each charge switch and one end of each discharge switch may be measured by the voltage measuring unit 100 as a voltage of the switching circuit 50.
  • the voltage measuring unit 100 may be operatively coupled to the control unit 400 so as to exchange electrical signals with the control unit 400.
  • the voltage measuring unit 100 measures the voltage of the switching circuit 50 every unit time in response to a voltage measurement command from the control unit 400, and controls the voltage signal indicating the measured voltage of the switching circuit 50. 400 can be output.
  • the temperature measuring unit 200 is located within a predetermined distance from the switching circuit 50 and is provided to measure the temperature of the switching circuit 50.
  • the temperature measuring unit 200 may be operatively coupled to the control unit 400 so as to exchange electrical signals with the control unit 400.
  • the temperature measuring unit 200 may measure the temperature of the switching circuit 50 every unit time, and may output a temperature signal indicating the measured temperature of the switching circuit 50 to the controller 400.
  • a known temperature sensor such as a thermocouple may be utilized as the temperature measuring unit 200.
  • the current measuring unit 300 includes a shunt resistor element 30 and a signal processing circuit 32.
  • the shunt resistor element 30 may be located in the charge / discharge path between the negative terminal of the battery 10 and the negative terminal of the battery pack P.
  • the voltage across the shunt resistor element 30 depends on the direction and intensity of the current flowing through the charge / discharge current.
  • the signal processing circuit 32 is operatively coupled to the control unit 400 so as to exchange electrical signals with the control unit 400.
  • the signal processing circuit 32 in response to the current measurement command from the control unit 400, based on the voltage across the shunt resistor element 30, the current flowing through the shunt resistor element 30 every unit time.
  • the current signal indicating the direction and magnitude of the measured current may be output to the controller 400.
  • the two input terminals of the signal processing circuit 32 may be electrically connected to one end and the other end of the shunt resistor element 30, respectively.
  • the signal processing circuit 32 amplifies the voltage across both ends of the shunt resistor element 30 received through the two input terminals of the signal processing circuit 32, and then uses the digital signal representing the amplified voltage as the current signal. It may transmit to the control unit 400.
  • the controller 400 may determine the first current value indicating the direction and intensity of the current flowing through the charge / discharge path based on the current signal from the signal processing circuit 32 for each unit time according to Ohm's law.
  • the control unit 400 may be configured to include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and microprocessors. microprocessors) and electrical units for performing other functions.
  • the controller 400 may include a memory device 500.
  • the control unit 400 determines the voltage value representing the voltage across the switching circuit 50 based on the voltage signal for each unit time from the voltage measuring unit 100.
  • the control unit 400 determines the temperature value indicating the temperature of the switching circuit 50 based on the temperature signal for each unit time from the temperature measuring unit 200.
  • the controller 400 may determine, on a unit of time basis, a second current value indicating the direction and intensity of the current flowing through the switching circuit 50 based on the voltage value and the temperature value associated with the switching circuit 50.
  • both the first current value and the second current value represent directions and intensities of currents flowing through the charge / discharge path for the battery 10, the first current value and the second current value are the same as usual. Only within the acceptable range. On the other hand, when the shunt resistor element 30 is damaged or a short circuit failure occurs in the shunt resistor element 30, the difference between the first current value and the second current value may be significantly increased.
  • the controller 400 may estimate the on-resistance of the switching circuit 50 based on the temperature of the switching circuit 50 for each unit time.
  • the on-resistance of the switching circuit 50 refers to the resistance of the switching circuit 50 while the switching circuit 50 is in the on-state and may be a parameter depending on the temperature.
  • the controller 400 corresponds to the temperature of the switching circuit 50 measured at a specific time point with reference to the first lookup table in which the correspondence between the temperature of the switching circuit 50 and the on-resistance is recorded.
  • the on-resistance recorded in the lookup table can be estimated as the on-resistance of the switching circuit 50 at this particular point in time.
  • the first lookup table may be stored in advance in the memory device 500.
  • the controller 400 divides the voltage across the switching circuit 50 at the specific time point by the estimated on-resistance according to the Ohm's law, so that the current flowing through the switching circuit 50 at the specific time point.
  • a second current value representing may be determined.
  • the controller 400 may determine a third current value representing a current flowing through the charge / discharge path based on the first current value and the second current value. For example, the controller 400 may determine the first current value as the current value flowing through the charge / discharge path based on the difference between the first current value and the second current value. As another example, the controller 400 may determine the average of the first current value and the second current value as the current value flowing through the charge / discharge path based on the first current value and the second current value. As another example, the controller 400 may determine the second current value as a current value flowing through the charge / discharge path based on the difference between the first current value and the second current value.
  • the controller 400 may diagnose whether the shunt resistor element 30 is in a normal state based on the difference between the first current value and the second current value. For example, the controller 400 may determine that the shunt resistor element 30 is in a normal state when the difference between the first current value and the second current value is within a normal range (eg, ⁇ 10 to 10 mA). Can be.
  • a normal range eg, ⁇ 10 to 10 mA
  • the normal range may be predetermined. Alternatively, the normal range may be determined by the controller 400 based on the temperature of the switching circuit 50. In the switching circuit 50, as the temperature of the switching circuit 50 increases, the on-resistance of the switching circuit 50 decreases, and as the temperature of the switching circuit 50 decreases, the on-resistance of the switching circuit 50 decreases. It may have increasing properties. Therefore, the controller 400 may reduce the normal range as the temperature of the switching circuit 50 increases, and enlarge the normal range as the temperature of the switching circuit 50 decreases.
  • the second lookup table in which the correspondence between the temperature of the switching circuit 50 and the normal range is recorded may be stored in the memory device 500 in advance. The controller 400 may use the temperature of the switching circuit 50 as an index to obtain a normal range associated with the temperature of the switching circuit 50 from the second lookup table.
  • the controller 400 may determine that the shunt resistor element 30 is in a failure state.
  • the failure state of the shunt resistor element 30 may mean a state in which the difference between the resistance and the reference resistance of the shunt resistor element 30 exceeds a predetermined level due to deterioration or damage of the shunt resistor element 30. .
  • the data representing the normal range may be stored in advance in the memory device 500.
  • the controller 400 may transmit a fault message to the external device 2 when it is determined that the shunt resistor element 30 is in a failure state.
  • the external device 2 may be an ECU (Electronic Control Unit) of an electric system (eg, an electric vehicle) in which the battery pack P is mounted.
  • the controller 400 selects one of the first current value, the second current value, and the average of the first current value and the second current value. It can be determined by the third current value.
  • the difference between the first current value and the second current value is within the normal range because it means that the first current value is reliable.
  • the controller 400 may determine the second current value as the third current value.
  • the memory device 500 may be operatively coupled to the controller 400 to exchange electrical signals with the controller 400.
  • the memory device 500 is not particularly limited as long as it is a storage medium capable of recording and erasing information.
  • the memory device 500 may be a RAM, a ROM, a register, a hard disk, an optical recording medium, or a magnetic recording medium.
  • the memory device 500 may be electrically connected to the controller 400 through, for example, a data bus so as to be accessible by the controller 400.
  • the memory device 500 may store and / or update and / or erase and / or transmit a program including various control logics performed by the controller 400, and / or data generated when the control logic is executed. .
  • FIG. 3 exemplarily shows a first lookup table associated with the switching circuit of FIGS. 1 and 2.
  • the controller 400 may refer to the first lookup table stored in the memory device 500 to determine the on-resistance of the switching circuit 50.
  • the control unit 400 uses the temperature a as an index and associates it with the temperature a in the first lookup table. Can be determined as the on-resistance of the switching circuit 50.
  • the controller 400 may determine y associated with the temperature b in the first lookup table as the on-resistance of the switching circuit 50.
  • the device 1 utilizes a characteristic in which the on-resistance of a semiconductor switch, such as a FET included in the switching circuit 50, varies depending on the temperature, so that the temperature of the switching circuit 50 and both ends of the switching circuit 50 are varied.
  • a second current value representing the current flowing through the switching circuit 50 is determined based on the across voltage.
  • the device 1 then compares the second current value with the first current value measured using the shunt resistor element 30, thereby improving the accuracy of the current measurement without adding a Hall effect sensor or the like. There is an advantage.
  • the controller 400 may determine the second current value by using the logic circuit 450 included in the controller 400.
  • the logic circuit 450 when receiving the temperature (T SW ) of the switching circuit 50 and the voltage (V SW ) across the switching circuit 50 as an input value, the second current value (I SW) ) May be a logic circuit configured to output as an output value.
  • the device 1 may be applied to a battery management system (BMS).
  • BMS battery management system
  • the BMS may include the device 1.
  • At least some of each component of the device 1 may be implemented by supplementing or adding the functionality of the components included in the conventional BMS.
  • the controller 400 and the memory device 500 of the apparatus may be implemented as components of a BMS.
  • FIG. 5 is a flowchart schematically showing a current measuring method according to another embodiment of the present invention.
  • the performing agent of each step included in the method of FIG. 5 may be referred to as each component of the apparatus 1.
  • step S100 the controller 400 collects a voltage signal from the voltage measuring unit 100, a temperature signal from the temperature measuring unit 200, and a current signal from the current measuring unit 300. do.
  • step S110 the control unit 400 determines the voltage value indicating the voltage across the switching circuit 50 and the temperature value indicating the temperature of the switching circuit 50 based on the voltage signal and the temperature signal.
  • step S120 the control unit 400 determines the first current value representing the current flowing through the shunt resistor element 30 based on the current signal. Since the shunt resistor element 30 is provided in the charge / discharge path, the first current value may also indicate the current flowing through the charge / discharge path.
  • step S130 the controller 400 determines a second current value representing the current flowing through the switching circuit 50 based on the voltage value and the temperature value determined in step S110. Since the switching circuit 50 is installed in the charge / discharge path, the second current value may represent the current flowing through the charge / discharge path.
  • step S140 it is determined whether the shunt resistor element 30 is in a normal state based on the first current value and the second current value. For example, when the difference between the first current value and the second current value is within the normal range, it may be determined that the shunt resistor element 30 is in a normal state. On the other hand, when the difference between the first current value and the second current value is outside the normal range, it may be determined that the shunt resistor element 30 is in a fault state. If the value of step S140 is "no", step S150 may proceed. If the value of step S140 is "Yes", the method may end.
  • the controller 400 may transmit a fault message to the external device 2.
  • the fault message is for notifying the user or the external device 2 that the shunt resistor element 30 is in a fault condition.

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Abstract

L'invention concerne un dispositif de mesure de courant, un procédé de mesure de courant et un bloc-batterie comprenant le dispositif de mesure de courant. Le dispositif de mesure de courant comprend : un circuit de commutation installé dans un trajet de charge/décharge pour une batterie ; une unité de mesure de courant comprenant un élément de résistance de dérivation disposé dans le trajet de charge/décharge et délivrant un signal de courant correspondant à une tension aux deux extrémités de l'élément de résistance de dérivation ; une unité de mesure de tension pour mesurer une tension aux deux extrémités du circuit de commutation ; une unité de mesure de température pour mesurer une température du circuit de commutation ; et une unité de commande. L'unité de commande détermine une première valeur de courant représentant un courant circulant à travers l'élément de résistance de dérivation sur la base du signal de courant. L'unité de commande détermine une seconde valeur de courant représentant un courant circulant à travers le circuit de commutation sur la base de la tension mesurée et de la température mesurée. L'unité de commande détermine si l'élément de résistance de dérivation est dans un état normal sur la base de la première valeur de courant et de la seconde valeur de courant.
PCT/KR2019/007013 2018-06-22 2019-06-11 Dispositif de mesure de courant, procédé de mesure de courant et bloc-batterie comprenant un dispositif de mesure de courant WO2019245215A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES19823590T ES2970633T3 (es) 2018-06-22 2019-06-11 Aparato de medición de corriente, método de medición de corriente y paquete de baterías que incluye el aparato de medición de corriente
EP19823590.5A EP3734307B1 (fr) 2018-06-22 2019-06-11 Appareil de mesure de courant, procédé de mesure de courant et bloc-batterie comprenant l'appareil de mesure de courant
US16/767,219 US11415633B2 (en) 2018-06-22 2019-06-11 Current measuring apparatus, current measuring method and battery pack including the current measuring apparatus
JP2020524594A JP7071013B2 (ja) 2018-06-22 2019-06-11 電流測定装置、電流測定方法及び前記電流測定装置を含むバッテリーパック
CN201980006148.7A CN111433618B (zh) 2018-06-22 2019-06-11 电流测量设备和方法及包括电流测量设备的电池组

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2018-0072156 2018-06-22
KR20180072156 2018-06-22
KR10-2019-0064721 2019-05-31
KR1020190064721A KR20200000341A (ko) 2018-06-22 2019-05-31 전류 측정 장치, 전류 측정 방법 및 상기 전류 측정 장치를 포함하는 배터리 팩

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022177241A3 (fr) * 2021-02-22 2022-10-13 주식회사 엘지에너지솔루션 Appareil de gestion de batterie
US11604229B2 (en) 2020-12-28 2023-03-14 Analog Devices International Unlimited Company Techniques for determining energy storage device state of health
US11835584B2 (en) 2020-08-19 2023-12-05 Analog Devices International Unlimited Company Battery SOH determination circuit

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