WO2022270736A1 - 배터리 상태 검출 장치 및 배터리 보호 장치 - Google Patents
배터리 상태 검출 장치 및 배터리 보호 장치 Download PDFInfo
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- WO2022270736A1 WO2022270736A1 PCT/KR2022/005726 KR2022005726W WO2022270736A1 WO 2022270736 A1 WO2022270736 A1 WO 2022270736A1 KR 2022005726 W KR2022005726 W KR 2022005726W WO 2022270736 A1 WO2022270736 A1 WO 2022270736A1
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- battery
- fuse
- resistance element
- sensor
- voltage
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- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims description 18
- 238000004146 energy storage Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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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]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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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]
- G01R31/364—Battery terminal connectors with integrated measuring arrangements
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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
-
- 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
-
- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/56—Testing of electric apparatus
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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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/046—Signalling the blowing of a fuse
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
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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
- 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 a battery state detection device, and more particularly, to a battery state detection device to which a high-resistance parallel structure is applied, and a battery protection device using the same.
- An energy storage system is a system that links renewable energy, a battery storing power, and existing grid power. Recently, as the spread of smart grid and renewable energy has been expanded and the efficiency and stability of power systems have been emphasized, the demand for energy storage systems is increasing for power supply and demand control and power quality improvement. . Depending on the purpose of use, energy storage systems vary in output and capacity. In order to configure a large-capacity energy storage system, a plurality of battery systems may be connected to each other.
- the ESS system generally provides information about the battery system voltage and whether a battery fuse is disconnected. For example, when a 17-stage battery rack is used as a battery, voltages of 238 battery cells connected in series are measured respectively and summed to calculate the system voltage. In this case, since the number of battery cells is large, an error caused by truncating a decimal point in an individual voltage calculation process may increase when the voltages for each battery cell are summed up. In addition, when the battery is not charged and discharged, it is not easy to determine whether the problem is with the fuse or with other elements.
- an error occurs in measuring the system voltage or a problem in that it is not immediately known whether or not the fuse is disconnected occurs.
- An object of the present invention to solve the above problems is to provide a battery state detection device capable of checking system voltage and whether a fuse is disconnected.
- Another object of the present invention to solve the above problems is to provide a battery protection device including the battery state detection device.
- An apparatus for detecting a battery state includes a first fuse connected to a positive electrode of a battery; a second fuse connected to the negative electrode of the battery; a high resistance element connected to the first fuse and the second fuse and arranged in parallel with the battery; a sensor measuring a current flowing through the high-resistance element or a voltage applied to the high-resistance element; and a control unit that determines whether a system voltage and a fuse are disconnected from the current or voltage measured by the sensor.
- the senor is located between the high resistance element and the first fuse and connected in series with the high resistance element, or is located between the high resistance element and the second fuse and connected in series with the high resistance element It may be a current sensor that becomes
- the sensor may also be a voltage sensor that is connected in parallel with the high resistance and measures a voltage applied to the high resistance element.
- control unit may be included in a battery management system (BMS) that manages the state of the battery.
- BMS battery management system
- control unit may determine that the fuse is disconnected when the current value measured from the current sensor is 0, and the battery can be operated by using the current value measured from the current sensor and the resistance value of the high-resistance element.
- the system voltage provided can be calculated.
- control unit may determine that the fuse is disconnected, and determine the voltage value measured by the voltage sensor as a system voltage value provided by the battery. .
- a battery protection device for achieving the other object is a device for protecting a battery in an energy storage system including a battery and a PCS (Power Conversion System), comprising a first connected to a positive electrode of the battery fuse; a second fuse connected to the negative electrode of the battery; a first main contactor controlling a connection between the first fuse and the PCS; a second main contactor controlling a connection between the second fuse and the PCS; a high resistance element connected to the first fuse and the second fuse and arranged in parallel with the battery; a sensor measuring a current flowing through the high-resistance element or a voltage applied to the high-resistance element; and a control unit that determines whether a system voltage and a fuse are disconnected from the current or voltage measured by the sensor.
- PCS Power Conversion System
- voltage information of a battery system and information on whether a fuse is disconnected can be checked at low cost through application of a high-resistance parallel structure.
- FIG. 1 is a block diagram of an energy storage system to which the present invention can be applied.
- FIG. 2 is a block diagram of a conventional battery condition monitoring device.
- FIG. 3 is a block diagram of an apparatus for detecting a battery state according to an embodiment of the present invention.
- FIG. 4 illustrates an example of checking system voltage information in a battery state detection device according to an embodiment of the present invention.
- FIG. 5 illustrates an example of checking whether a fuse is disconnected in the battery state detection device according to an embodiment of the present invention.
- FIG. 6 is a block diagram of an apparatus for detecting a battery state according to another embodiment of the present invention.
- first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.
- the term “and/or” includes any combination of a plurality of related listed items or any of a plurality of related listed items.
- FIG. 1 is a block diagram of an energy storage system to which the present invention can be applied.
- a battery cell The smallest unit of a battery that serves to store power in an energy storage system (ESS) is typically a battery cell.
- a series/parallel combination of battery cells may form a battery module, and a plurality of battery modules may form a battery rack. That is, a battery rack may be a minimum unit of a battery system with a series/parallel combination of battery modules.
- the battery rack may be referred to as a battery pack according to a device or system in which batteries are used.
- one battery rack may include a plurality of battery modules and one BPU (500) or a protective device.
- Battery rack can be monitored and controlled through the RBMS (Rack BMS) (100).
- RBMS (100) may play a role of monitoring the current, voltage and temperature of each battery rack it manages, and calculating the SOC (Status Of Charge) of the battery based on the monitoring result and controlling charging and discharging.
- a battery protection unit (BPU) 500 is a device for protecting a battery from abnormal current and fault current in a battery rack unit.
- the BPU may include a Main Contactor (MC), a fuse, a Circuit Breaker (CB), or a Disconnect Switch (DS).
- the BPU may control the battery system in units of racks by turning on/off the main contactor under the control of the RBMS.
- the BPU can also use a fuse to protect the battery from short circuit current in the event of a short circuit. In this way, the battery system can be controlled through protection devices such as BPUs and switch gears.
- a battery section controller (BSC) 200 is installed in each of the battery sections composed of a plurality of batteries and peripheral circuits, devices, etc. to monitor and control control targets such as voltage, current, temperature, circuit breaker, etc. can do.
- the BSC is an uppermost controller of a battery system including a bank unit battery system including a plurality of battery packs, and is also used as a control device in a battery system having a plurality of bank level structures.
- the Power Conversion System (PCS) 400 installed in each battery section controls the charging and discharging of the battery by controlling the power supplied to the outside and the power supplied to the outside from the battery section, and the DC / AC inverter can include Meanwhile, when the ESS system is interlocked with a photovoltaic (PV) system, a PV inverter may be included.
- PCS Power Conversion System
- each BPU may be connected to the PCS 400 through a DC bus, and the PCS 400 may be connected to the grid 600.
- an energy management system (EMS)/power management system (PMS) 300 manages the ESS system as a whole.
- FIG. 2 is a block diagram of a conventional battery condition monitoring device.
- FIG. 2 Conventionally, a device configured as shown in FIG. 2 has been used to monitor the battery state of the ESS system.
- a first fuse is connected to the positive poles of a series of batteries, and a second fuse is connected to the negative poles of the batteries.
- the other end of the first fuse is connected to the first main contactor, and the other end of the second fuse is connected to the second main contactor.
- the first main contactor is connected to the positive terminal of the DC link unit, and the second main contactor is connected to the negative terminal of the DC link unit.
- a current sensor is disposed between the main contactor and the DC link unit, and the sum of the battery cell voltages is estimated by the RBMS based on the current value measured through the current sensor 510.
- the present invention is proposed to solve this problem, and through the embodiments presented through FIGS. 3 to 6 below, voltage information of the system and whether or not the fuse is disconnected can be simultaneously checked.
- FIG. 3 is a block diagram of an apparatus for detecting a battery state according to an embodiment of the present invention.
- an apparatus for detecting a battery state includes a first fuse connected to a positive electrode of a battery; a second fuse connected to the negative electrode of the battery; a high resistance element 550 connected to the first fuse and the second fuse and arranged in parallel with the battery; a sensor 520 measuring a current flowing through the high resistance element; and a control unit 100 that determines whether a system voltage and a fuse are disconnected from the current measured by the sensor.
- control unit 100 may be included in the RBMS or as a part of the RBMS.
- the senor 520 may be positioned between the high resistance element and the first fuse and connected in series with the high resistance element.
- the current sensor may be positioned between the high resistance element and the second fuse and connected in series with the high resistance element.
- a high resistance element 550 is provided between the contact point of the first fuse and the first main contactor and between the contact point of the second fuse and the second main contactor. ) and can be arranged in parallel.
- a fuse is one of the main parts of the BPU and is a protection element that is disconnected passively to protect the battery when a short-circuit current occurs, and is a one-time part that requires periodic replacement during use.
- the main contactor is an electrical switchgear, and is generally referred to as a magnetic contactor. The DC link must be closed to the ESS main circuit to charge and discharge the battery.
- the resistance value of the high-resistance element may be several mega ohms (M ⁇ ).
- the high-resistance element is connected in parallel with the battery so that a minute current of several mA flows through the high-resistance element, and the minute current is measured through the current sensor 520 connected in series with the high-resistance element.
- the measured minute current value is analyzed by the control unit 100, and from this, voltage information of the system and whether fuse 1 or fuse 2 is disconnected can be confirmed. Accordingly, the current sensor 510 used in the existing device may not necessarily be used.
- control unit 100 may be included in the RBMS or as a part of the RBMS.
- the battery state detection device uses an element 550 having a high resistance value to allow only a minute current to flow through the corresponding element, thereby monitoring the battery state without significantly affecting the system's unique function of charging and discharging the battery. can be performed.
- the battery protection device 500 a first fuse connected to the positive electrode of the battery; a second fuse connected to the negative electrode of the battery; a first main contactor controlling a connection between the first fuse and a power conversion system (PCS); a second main contactor controlling a connection between the second fuse and the PCS; a high resistance element 550 connected to the first fuse and the second fuse and arranged in parallel with the battery; a sensor 520 for measuring a current flowing through the high-resistance element or a voltage applied to the high-resistance element; and a control unit 100 that determines whether a system voltage and a fuse are disconnected from the current or voltage measured by the sensor.
- PCS power conversion system
- a control unit 100 that determines whether a system voltage and a fuse are disconnected from the current or voltage measured by the sensor.
- FIG. 4 illustrates an example of checking system voltage information in a battery state detection device according to an embodiment of the present invention.
- the high-resistance element is connected in parallel with the battery so that a minute current of several mA flows through the high-resistance element, and the minute current is measured through the current sensor 520 connected in series with the high-resistance element.
- the measured minute current value is analyzed by the control unit 100, and voltage information of the system and whether the fuse is disconnected can be confirmed from this.
- FIG. 5 illustrates an example of checking whether a fuse is disconnected in the battery state detection device according to an embodiment of the present invention.
- the control unit 100 can determine that the fuse (fuse 1 or fuse 2) is disconnected from the current value measured by the current sensor.
- FIG. 6 is a block diagram of an apparatus for detecting a battery state according to another embodiment of the present invention.
- a high-resistance element 550 is provided between the contacts of the first fuse and the first main contactor and between the contacts of the second fuse and the second main contactor. are connected in parallel with
- the resistance value of the high-resistance element may be several megaohms (M ⁇ ).
- the battery state detection device includes a first fuse connected to a positive electrode of a battery; a second fuse connected to the negative electrode of the battery; a high resistance element 550 connected to the first fuse and the second fuse and arranged in parallel with the battery; a sensor 520 measuring a voltage applied to the high resistance element; and a control unit 100 that determines whether a system voltage and a fuse are disconnected from the voltage measured by the sensor, and in the embodiment, the sensor is connected in parallel with the high resistance element to It may be a voltage sensor that measures the applied voltage.
- a voltage value applied to the high-resistance element may be measured through the voltage sensor 530 connected in parallel with the high-resistance element.
- the voltage value applied to the high-resistance element measured by the voltage sensor 530 may be equal to or similar to the system voltage value, that is, the sum of voltage values of a plurality of batteries connected in series. . When the fuse is disconnected, the voltage applied to the high-resistance element will be close to zero.
- the control unit 100 determines that the voltage value measured by the voltage sensor is a normal voltage value that can be expected in the battery system (eg, battery cell voltage of 4.2V, based on SOC100% in the case of a module 17-tier rack, module Since each unit has a voltage value of 58.8V, when the voltage output by the battery rack is 999.6V), the corresponding voltage value can be recognized as system voltage information.
- the controller 100 may also confirm that the fuse is disconnected when the voltage value measured by the voltage sensor is close to 0.
- a block or apparatus corresponds to a method step or feature of a method step.
- aspects described in the context of a method may also be represented by a corresponding block or item or a corresponding feature of a device.
- Some or all of the method steps may be performed by (or using) a hardware device such as, for example, a microprocessor, programmable computer, or electronic circuitry. In some embodiments, one or more of the most important method steps may be performed by such an apparatus.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
Claims (11)
- 배터리의 양극과 연결된 제1 퓨즈;상기 배터리의 음극과 연결된 제2 퓨즈;상기 제1 퓨즈 및 상기 제2 퓨즈와 연결되어 상기 배터리와 병렬로 배치되는 고저항 소자;상기 고저항 소자에 흐르는 전류 또는 상기 고저항 소자에 인가되는 전압을 측정하는 센서; 및상기 센서에 의해 측정된 전류 또는 전압으로부터 시스템 전압 및 퓨즈의 단선 여부를 판단하는 제어부를 포함하는, 배터리 상태 검출 장치.
- 청구항 1에 있어서,상기 센서는,상기 고저항 소자 및 상기 제1 퓨즈와의 사이에 위치하여 상기 고저항 소자와 직렬 연결되거나 상기 고저항 소자 및 상기 제2 퓨즈와의 사이에 위치하고 상기 고저항 소자와 직렬 연결되는 전류 센서인, 배터리 상태 검출 장치.
- 청구항 1에 있어서,상기 센서는,상기 고저항과 병렬 연결되어 상기 고저항 소자에 인가되는 전압을 측정하는 전압 센서인, 배터리 상태 검출 장치.
- 청구항 1에 있어서,상기 제어부는 상기 배터리의 상태를 관리하는 BMS(Battery Management System)에 포함되는, 배터리 상태 검출 장치.
- 청구항 2에 있어서,상기 제어부는,상기 전류 센서로부터 측정된 전류 값이 0인 경우, 상기 퓨즈가 단선되었다고 판단하는, 배터리 상태 검출 장치.
- 청구항 2에 있어서,상기 제어부는,상기 전류 센서로부터 측정된 전류 값과 상기 고저항 소자의 저항 값을 이용해 상기 배터리에 의해 제공되는 시스템 전압을 산출하는, 배터리 상태 검출 장치.
- 청구항 3에 있어서,상기 제어부는,상기 전압 센서로부터 측정된 전압 값이 0인 경우, 상기 퓨즈가 단선되었다고 판단하는, 배터리 상태 검출 장치.
- 청구항 3에 있어서,상기 제어부는,상기 전압 센서로부터 측정된 전압 값을 상기 배터리에 의해 제공되는 시스템 전압 값으로 판단하는, 배터리 상태 검출 장치.
- 배터리 및 PCS(전력 변환 시스템)을 포함하는 에너지 저장 시스템에서 상기 배터리를 보호하는 장치로서,상기 배터리의 양극과 연결된 제1 퓨즈;상기 배터리의 음극과 연결된 제2 퓨즈;상기 제1 퓨즈와 상기 PCS와의 연결을 제어하는 제1 메인 컨택터;상기 제2 퓨즈와 상기 PCS와의 연결을 제어하는 제2 메인 컨택터;상기 제1 퓨즈 및 상기 제2 퓨즈와 연결되어 상기 배터리와 병렬로 배치되는 고저항 소자;상기 고저항 소자에 흐르는 전류 또는 상기 고저항 소자에 인가되는 전압을 측정하는 센서; 및상기 센서에 의해 측정된 전류 또는 전압으로부터 시스템 전압 및 퓨즈의 단선 여부를 판단하는 제어부를 포함하는, 배터리 보호 장치.
- 청구항 9에 있어서,상기 센서는,상기 고저항 소자 및 상기 제1 퓨즈와의 사이에 위치하여 상기 고저항 소자와 직렬 연결되거나 상기 고저항 소자 및 상기 제2 퓨즈와의 사이에 위치하고 상기 고저항 소자와 직렬 연결되는 전류 센서인, 배터리 보호 장치.
- 청구항 9에 있어서,상기 센서는,상기 고저항과 병렬 연결되어 상기 고저항 소자에 인가되는 전압을 측정하는 전압 센서인, 배터리 보호 장치.
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