WO2021230516A1 - 배터리 셀 및 이를 포함하는 배터리 시스템 - Google Patents
배터리 셀 및 이를 포함하는 배터리 시스템 Download PDFInfo
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- WO2021230516A1 WO2021230516A1 PCT/KR2021/004999 KR2021004999W WO2021230516A1 WO 2021230516 A1 WO2021230516 A1 WO 2021230516A1 KR 2021004999 W KR2021004999 W KR 2021004999W WO 2021230516 A1 WO2021230516 A1 WO 2021230516A1
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- WIPO (PCT)
- Prior art keywords
- battery
- lead electrode
- electrode
- lead
- conductive polymer
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Classifications
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
-
- 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
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
-
- 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
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- 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
-
- 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
-
- 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
-
- 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
Definitions
- the present disclosure relates to a battery cell and a battery system including the same.
- the battery may continue to operate and the battery may be operated with the inside of the battery cell exposed to the air.
- gas may be generated from a battery cell or more while the electric vehicle is running, causing the battery to stop working and an accident may occur.
- An object of the present invention is to provide a battery cell and battery system capable of detecting abnormal signs of a battery.
- a battery cell includes an electrode assembly; A case for accommodating the electrode assembly, a first lead electrode electrically connected to at least one of the two electrode tabs of the electrode assembly, a conductive polymer including one surface in contact with one surface of the first lead electrode, and the conductivity and a second lead electrode having one surface in contact with the other surface of the polymer, and when the gap between the first lead electrode and the second lead electrode is widened, the resistance between the first lead electrode and the second lead electrode is increases
- the battery cell may further include a film surrounding a region including a portion where the first lead electrode, the conductive polymer, and the second lead electrode overlap.
- the second lead electrode may protrude to the outside of one side of the case and be connected to the bus bar.
- a battery system includes a plurality of battery cells and a battery management system, and each of the plurality of battery cells includes at least one of an electrode assembly, a case accommodating the electrode assembly, and two electrode tabs of the electrode assembly.
- a first lead electrode electrically connected to any one, a conductive polymer including one surface in contact with one surface of the first lead electrode, and a second lead electrode including one surface in contact with the other surface of the conductive polymer, , the battery management system may detect an increase in resistance of at least one of the plurality of battery cells to diagnose an abnormality.
- the battery management system may generate a check signal when the rate of increase of the at least one resistance reaches a predetermined threshold value less than or equal to a first reference value.
- the battery management system may generate a warning signal when the rate of increase of the at least one resistance reaches the predetermined threshold at a faster rate than the first reference value.
- the battery management system may generate an evacuation warning signal when the rate of increase of the at least one resistance reaches the predetermined threshold by more than a second reference value greater than the first reference value.
- Each of the plurality of battery cells may further include a film surrounding a region including a portion where the first lead electrode, the conductive polymer, and the second lead electrode overlap.
- the second lead electrode may protrude to the outside of one side of the case and be connected to the bus bar.
- the battery management system may supply a diagnostic voltage to both ends of at least one of the plurality of battery cells, measure a diagnostic current flowing through the at least one, and calculate the at least one resistance.
- a battery cell and a battery system that provide an alert for anomalies in a battery cell.
- FIG. 1 is a diagram illustrating a battery system according to an embodiment.
- FIG. 2 is a diagram illustrating a battery cell according to an exemplary embodiment.
- FIG. 3 is a view showing that an abnormality has occurred in one of a plurality of battery cells.
- FIG. 4 is a diagram illustrating a battery system according to an embodiment.
- FIG. 5 is a diagram illustrating a battery system according to an exemplary embodiment.
- FIG. 1 is a diagram illustrating a battery system according to an embodiment.
- FIG. 2 is a diagram illustrating a battery cell according to an exemplary embodiment.
- the battery system 1 includes a plurality of battery cells 11 - 18 and a battery management system (BMS) 20 .
- BMS battery management system
- the battery system 1 is illustrated as including eight battery cells 11 - 18 , but this is an example and the invention is not limited thereto.
- two battery cells constitute one bank connected in parallel
- a plurality of battery cells 11-18 are connected in series or three or more battery cells are connected in parallel to form a bank. can be configured.
- the BMS 20 controls the charge/discharge current of the battery system 1 , measures the cell voltage of each of the plurality of battery cells 11-18 to control the cell balancing operation, and the plurality of battery cells 11-18 It is possible to control the protection operation based on each temperature and cell voltage.
- the BMS 20 may detect an abnormal battery cell that is likely to be vented among the plurality of battery cells 11-18, and when the abnormal battery cell is detected, the plurality of battery cells 11 -18) to stop the operation and to warn the outside that there is an abnormality.
- the battery cell 11 may include an electrode assembly and a case 110 that are repeatedly stacked in the order of a positive electrode layer 117 , a separator 118 , and a negative electrode layer 119 .
- the positive electrode layer 117 includes a positive electrode 117a and a positive electrode tab 117b, the positive electrode tab 117b extends from the positive electrode 117a, and protrudes from one side of the case 110 to the positive electrode lead 117c ) is associated with
- the negative electrode layer 119 includes a negative electrode 119a and a negative electrode tab 119b, the negative electrode tab 119b extends from the negative electrode 119a, protrudes to the other side of the case 110, and is connected to the negative electrode lead 119c do.
- the case 110 accommodates the electrode assembly.
- the present invention is not limited thereto. It is also applicable to a battery system including a battery cell in which a positive tab and a negative tab protrude in the same direction.
- the positive lead 117c is electrically connected to the lead electrode 113 , the lead electrode 113 and the lead electrode 111 are electrically connected through a conductive polymer 112 , and the lead electrode 111 is a bus bar (32) is electrically connected.
- a part of the lower end surface of the lead electrode 113 contacts the positive electrode tab 117b , and another part of the lower end surface of the lead electrode 113 (the lower right end in FIG. 2 ).
- a part of the surface) and a part of the upper surface of the lead electrode 111 overlap each other, and the conductive polymer 112 is positioned therebetween.
- the negative lead 119c is electrically connected to the lead electrode 115 , and the lead electrode 115 is connected to the bus bar 36 .
- the film 114 surrounds a region including the overlapping portion of the lead electrode 111 , the lead electrode 113 , and the conductive polymer 112 .
- the film 116 surrounds a portion of the lead electrode 115 .
- the case 110 accommodates the electrode assembly, and the lead electrode 111 protrudes to the outside through one opening of the case 110 to be connected to the bus bar 32 , and the lead electrode through the other opening of the case 110 .
- 115 is connected to the bus bar 36 .
- One opening may be sealed by the film 114 or the film 114 and the sealing material, and the other opening may be sealed by the film 116 or the film 116 and the sealing material.
- the plurality of battery cells 12 - 18 may be implemented with the same structure as the battery cell 11 .
- the lead electrode 111 that is the positive electrode of the battery cell 11 and the lead electrode 121 that is the positive electrode of the battery cell 12 are connected to the bus bar 32 , and the bus bar 32 is the battery system 1 . It is connected to the positive electrode (31). Lead electrodes 115 and 125 that are negative electrodes of the battery cells 11 and 12 and lead electrodes 131 and 141 that are positive electrodes of the battery cells 13 and 14 are connected to the bus bar 36 , and the battery cell 13 is connected to the bus bar 36 .
- the lead electrodes 151 and 161 are connected to the bus bar 33, and of the battery cells 15 and 16,
- the negative lead electrodes 155 and 165 and the positive lead electrodes 171 and 181 of the battery cells 17 and 18 are connected to the bus bar 35, and the lead electrodes are the negative electrode of the battery cells 17 and 18. 175 and 185 are connected to the bus bar 34 .
- the busbar 34 is connected to the negative electrode 37 of the battery system 1 .
- the BMS 20 may supply a diagnostic voltage between two bus bars among the plurality of bus bars 32-36 and measure the resistance of the battery bank.
- two adjacent battery cells are connected in parallel to each other to constitute one battery bank.
- the invention is not limited thereto, and instead of the battery bank, one battery cell unit may be connected in series as shown in FIG. 1 , or the battery bank may include at least three battery cells.
- the BMS 20 measures the resistance of a plurality of battery banks including two battery cells among the plurality of battery cells 11-18, and when the resistance of the battery banks is greater than or equal to a predetermined value, it is diagnosed that there is an abnormality in the corresponding battery bank. do.
- the BMS 20 measures the resistance of a battery bank composed of two battery cells 11 and 12 among the plurality of battery cells 11-18.
- FIG. 3 is a view showing that an abnormality has occurred in one of a plurality of battery cells.
- gas is generated in the battery cell 11 , and the case 110 in the dotted box area RB expands from the dashed lines 200 and 201 indicated by the solid lines 202 and 203 .
- This is an example for explaining an embodiment, and the present invention is not limited thereto.
- the BMS 20 supplies a diagnostic voltage between the bus bar 32 and the bus bar 36 through the wiring 41 and the wiring 45 . At this time, the diagnostic current flowing through the battery cells 11 and 12 is summed and flows through the wire 41 and the wire 45, and the BMS 20 measures the diagnostic voltage and the diagnostic current to calculate the resistance of the battery bank. .
- the total resistance of the battery bank increases.
- the gap between the lead electrode 113 and the lead electrode 111 is widened due to an increase in pressure inside the battery cell 11 . This is due to the force acting in the direction of the two arrows in the figure by the internal pressure of the battery cell 11 .
- the conductive polymer 112 is expanded by the force acting in both vertical directions. As the gap between the two lead electrodes 111 and 113 increases, the resistance between the two lead electrodes increases, and the battery bank resistance calculated by the BMS 20 increases.
- the BMS 20 applies a diagnostic voltage between the bus bar 36 and the bus bar 33 through the wiring 45 and the wiring 42 to diagnose abnormal symptoms of the battery cells 13 and 14.
- the resistance of the battery bank may be calculated by measuring the diagnostic current flowing through the wiring 41 and the wiring 45 .
- the BMS 20 supplies a diagnostic voltage between the bus bar 33 and the bus bar 35 through the wiring 42 and the wiring 44 to diagnose abnormal symptoms of the battery cells 15 and 16, and the wiring
- the resistance of the battery bank may be calculated by measuring the diagnostic current flowing through 42 and the wiring 44 .
- the BMS 20 supplies a diagnostic voltage between the bus bar 35 and the bus bar 34 through the wiring 44 and the wiring 43 to diagnose abnormal symptoms of the battery cells 17 and 18, and the wiring
- the resistance of the battery bank may be calculated by measuring the diagnostic current flowing through 44 and the wiring 43 .
- the BMS 20 calculates the resistance of the corresponding battery bank by dividing the measured diagnostic current by the supplied diagnostic voltage.
- the BMS 20 may generate a check signal when the resistance increase rate of the battery bank is slow but reaches a threshold value.
- the increase rate is equal to or less than the first predetermined reference value, it may be determined that the resistance increase rate is slow, and the predetermined reference value may be set according to a design.
- the BMS 20 may generate a warning signal when the resistance of the battery bank reaches a threshold at a fast increasing rate. When the increase rate is greater than the first reference value, the BMS 20 may determine that the resistance increase rate is fast.
- the BMS 20 may generate an evacuation warning signal because there is a risk of ignition when the resistance of the battery bank reaches a threshold value at a very rapid increase rate.
- the increase rate is greater than a predetermined second reference value greater than the first reference value, the BMS 20 may determine that the resistance increase rate is very fast.
- the BMS 20 may stop the operation of the battery system 1 according to the check signal, the warning signal, and the evacuation warning signal, and transmit it to the circuit controlling the vehicle through CAN communication, and provide the battery to the user through a separate device.
- An abnormal symptom of the system 1 can be notified.
- the inspection signal is a signal to inform the user that the battery system needs to be checked
- the warning signal is a signal to inform the user that the battery system is in danger and needs replacement
- the evacuation warning signal is a signal to warn the user to evacuate immediately.
- each signal may be appropriately designed according to the design.
- the lead electrode, the conductive polymer, and the lead electrode are illustrated as being positioned on the anode side of the battery cell, but the invention is not limited thereto.
- FIG. 4 is a diagram illustrating a battery system according to an embodiment.
- the lead electrode 513 is electrically connected to the negative lead 516 , and the conductive polymer 512 is positioned between the lead electrode 513 and the lead electrode 515 , and the lead electrode 515 is connected to the bus bar 36 .
- the film 518 covers a region including a portion where the lead electrode 513 , the conductive polymer 512 , and the lead electrode 515 overlap.
- the lead electrode 511 is connected to the positive lead 514 and the bus bar 32 .
- the film 517 surrounds a portion of the lead electrode 511 .
- the lead electrode 511 that is the positive electrode of the battery cell 51 and the lead electrode 521 that is the positive electrode of the battery cell 52 are connected to the bus bar 32 , and the bus bar 32 is the battery system 1 . It is connected to the positive electrode (31). Lead electrodes 515 and 525 serving as negative electrodes of the battery cells 51 and 52 and lead electrodes 531 and 541 serving as positive electrodes of the battery cells 53 and 54 are connected to the bus bar 36 , and the battery cell 53 .
- the negative lead electrodes 535 and 545 and the positive electrode of the battery cells 55 and 56 , 551 , 561 are connected to the bus bar 33
- Lead electrodes 555 and 565 that are negative poles and lead electrodes 571 and 581 that are positive poles of battery cells 57 and 58 are connected to the bus bar 35
- lead electrodes that are negative poles of battery cells 57 and 58. 575 and 585 are connected to the bus bar 34 .
- the busbar 34 is connected to the negative electrode 37 of the battery system 1 .
- the BMS 20 of the embodiment of FIG. 4 supplies a diagnostic voltage between two busbars among the plurality of busbars 32-36, and measures the resistance of the battery bank. can Detailed description will be omitted.
- FIG. 5 is a diagram illustrating a battery system according to an embodiment.
- the lead electrode 613 is electrically connected to the anode lead 617 , and a conductive polymer 612 is positioned between the lead electrode 613 and the lead electrode 611 , and the lead electrode 611 is connected to the bus bar 32 .
- the lead electrode 616 is electrically connected to the negative lead 618 , and a conductive polymer 614 is positioned between the lead electrode 616 and the lead electrode 615 , and the lead electrode 615 is a bus bar 36 .
- the film 619a surrounds a region including a portion where the lead electrode 613 , the conductive polymer 612 , and the lead electrode 611 overlap, and the film 619b includes the lead electrode 616 , the conductive polymer 614 . ), and the lead electrode 615 surrounds a region including an overlapping portion.
- the lead electrode 611 that is the positive electrode of the battery cell 61 and the lead electrode 621 that is the positive electrode of the battery cell 62 are connected to the bus bar 32 , and the bus bar 32 is the battery system 1 . It is connected to the positive electrode 31 .
- Lead electrodes 615 and 625 that are the negative electrodes of the battery cells 61 and 62 and the lead electrodes 631 and 641 that are positive electrodes of the battery cells 63 and 64 are connected to the bus bar 36 , and the battery cell 63 is connected to the bus bar 36 .
- the busbar 34 is connected to the negative electrode 37 of the battery system 1 .
- the BMS 20 of the embodiment of FIG. 5 supplies a diagnostic voltage between two busbars among the plurality of busbars 32-36 and measures the resistance of the battery bank. can Detailed description will be omitted.
- the BMS 20 detects an abnormality based on the increase rate of the resistance, but the invention is not limited thereto, and the resistance value is larger than a predetermined threshold value compared to other battery cells or battery banks. It can detect that there is something wrong with a cell or battery bank.
- the battery system according to an embodiment is applicable not only to a vehicle but also to an ESS (Energy Storage System), and a signal generated from the BMS 20 interlocks with firefighting equipment to perform a fire suppression operation when an ESS is ignited due to an abnormality.
- ESS Electronicgy Storage System
- a fire alarm may be activated and a fire door may be activated.
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Abstract
Description
Claims (10)
- 전극 조립체;상기 전극 조립체를 수납하는 케이스;상기 전극 조립체의 두 전극 탭 중 적어도 어느 하나에 전기적으로 연결되어 있는 제1 리드 전극;상기 제1 리드 전극의 일면에 접촉한 일면을 포함하는 전도성 폴리머; 및상기 전도성 폴리머의 타면에 접촉한 일면을 포함하는 제2 리드 전극을 포함하고,상기 제1 리드 전극 및 상기 제2 리드 전극 사이가 벌어질 때, 상기 제1 리드 전극 및 상기 제2 리드 전극 사이의 저항이 증가하는, 배터리 셀.
- 제1항에 있어서,상기 제1 리드 전극, 상기 전도성 폴리머, 및 상기 제2 리드 전극이 중첩된 부분을 포함하는 영역을 감싸는 필름을 더 포함하는, 배터리 셀.
- 제1항에 있어서,상기 제2 리드 전극은,상기 케이스의 일측의 외부로 돌출되어 버스바에 연결되는, 배터리 셀.
- 복수의 배터리 셀; 및배터리 관리 시스템을 포함하고,상기 복수의 배터리 셀 각각은,전극 조립체;상기 전극 조립체를 수납하는 케이스;상기 전극 조립체의 두 전극 탭 중 적어도 어느 하나에 전기적으로 연결되어 있는 제1 리드 전극;상기 제1 리드 전극의 일면에 접촉한 일면을 포함하는 전도성 폴리머; 및상기 전도성 폴리머의 타면에 접촉한 일면을 포함하는 제2 리드 전극을 포함하고,상기 배터리 관리 시스템은,상기 복수의 배터리 셀 중 적어도 하나의 저항이 증가하는 것을 감지하여 이상 여부를 진단하는, 배터리 시스템.
- 제4항에 있어서,상기 배터리 관리 시스템은,상기 적어도 하나의 저항 증가 속도가 제1 기준치 이하로 소정의 임계치에 도달한 경우 점검 신호를 발생시키는, 배터리 시스템.
- 제5항에 있어서,상기 배터리 관리 시스템은,상기 적어도 하나의 저항 증가 속도가 상기 제1 기준치 보다 빠른 속도로 상기 소정의 임계치에 도달한 경우 경고 신호를 발생시키는, 배터리 시스템.
- 제5항에 있어서,상기 배터리 관리 시스템은,상기 적어도 하나의 저항 증가 속도가 상기 제1 기준치 보다 큰 제2 기준치 이상으로 상기 소정의 임계치에 도달한 경우 대피 경고 신호를 발생시키는, 배터리 시스템.
- 제4항에 있어서,상기 복수의 배터리 셀 각각은,상기 제1 리드 전극, 상기 전도성 폴리머, 및 상기 제2 리드 전극이 중첩된 부분을 포함하는 영역을 감싸는 필름을 더 포함하는, 배터리 시스템.
- 제4항에 있어서,상기 제2 리드 전극은,상기 케이스의 일측의 외부로 돌출되어 버스바에 연결되는, 배터리 시스템.
- 제4항에 있어서,상기 배터리 관리 시스템은,상기 복수의 배터리 셀 중 적어도 하나의 양단에 진단 전압을 공급하고, 상기 적어도 하나에 흐르는 진단 전류를 측정하여, 상기 적어도 하나의 저항을 산출하는, 배터리 시스템.
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| JP2022518347A JP7381029B2 (ja) | 2020-05-13 | 2021-04-21 | バッテリセルおよびこれを含むバッテリシステム |
| US17/787,618 US12438200B2 (en) | 2020-05-13 | 2021-04-21 | Battery cell and battery system including the same |
| CN202180008406.2A CN114930611B (zh) | 2020-05-13 | 2021-04-21 | 电池单元和包括该电池单元的电池系统 |
| EP21804477.4A EP4068467B1 (en) | 2020-05-13 | 2021-04-21 | Battery cell and battery system comprising the same |
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| KR1020200056952A KR102945045B1 (ko) | 2020-05-13 | 2020-05-13 | 배터리 셀 및 이를 포함하는 배터리 시스템 |
| KR10-2020-0056952 | 2020-05-13 |
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| EP (1) | EP4068467B1 (ko) |
| JP (1) | JP7381029B2 (ko) |
| KR (1) | KR102945045B1 (ko) |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4068467A1 (en) | 2022-10-05 |
| KR20210138913A (ko) | 2021-11-22 |
| EP4068467A4 (en) | 2024-09-04 |
| JP2022550027A (ja) | 2022-11-30 |
| US20220416314A1 (en) | 2022-12-29 |
| US12438200B2 (en) | 2025-10-07 |
| JP7381029B2 (ja) | 2023-11-15 |
| EP4068467B1 (en) | 2026-04-15 |
| CN114930611B (zh) | 2025-11-11 |
| CN114930611A (zh) | 2022-08-19 |
| KR102945045B1 (ko) | 2026-03-26 |
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