WO2019017566A1 - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
WO2019017566A1
WO2019017566A1 PCT/KR2018/004011 KR2018004011W WO2019017566A1 WO 2019017566 A1 WO2019017566 A1 WO 2019017566A1 KR 2018004011 W KR2018004011 W KR 2018004011W WO 2019017566 A1 WO2019017566 A1 WO 2019017566A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
pair
isolation region
bent portion
battery cell
Prior art date
Application number
PCT/KR2018/004011
Other languages
French (fr)
Korean (ko)
Inventor
김영준
최현용
Original Assignee
삼성에스디아이(주)
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
Application filed by 삼성에스디아이(주) filed Critical 삼성에스디아이(주)
Priority to CN201890001011.3U priority Critical patent/CN211404672U/en
Publication of WO2019017566A1 publication Critical patent/WO2019017566A1/en

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Classifications

    • 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
    • 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
    • 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
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • 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 pack.
  • a secondary battery refers to a battery capable of charging and discharging, and is widely used not only in a field of small-sized high-end electronic devices such as a mobile phone, a PDA, and a notebook computer but also an energy storage system.
  • Such a secondary battery is used for a long period of time through charging and discharging, so stability is a subject of great interest. If the temperature of the secondary battery is insufficiently controlled, that is, the temperature of the secondary battery, the secondary battery deteriorates and the lifetime can not be secured. As described above, temperature control in a secondary battery is an important problem.
  • the present invention provides a battery pack having a protection circuit module mounted with a temperature sensor that can accurately measure the temperature of a battery cell while minimizing the influence of heat generated in circuit elements formed on a circuit board.
  • a battery pack according to the present invention includes a battery cell; And a protection circuit module electrically connected to the battery cell, the protection circuit module having a circuit board mounted with a temperature sensor for measuring a temperature of the battery cell, wherein a part of the circuit board is separated from the circuit board, And the temperature sensor is mounted on the isolation region.
  • the isolation region may be formed inside the circuit board.
  • the circuit board is formed in a rectangular shape and may include a pair of long sides and a pair of short sides connecting the pair of long sides and shorter than the length of the pair of long sides.
  • the isolation region may have a predetermined width from one of the pair of long sides to the inside of the circuit board, and may be formed parallel to the long side.
  • the isolation region may be formed from any one of the pair of short sides toward the inside of the circuit board.
  • the isolation region may include a connecting portion connected to the circuit board and parallel to the pair of short sides, and a bent portion bent from the connecting portion and parallel to the pair of long sides.
  • the temperature sensor may be formed in the bent portion.
  • the isolation region includes a connection portion connected to the circuit board and parallel to the pair of long sides, a first bending portion bent from the connection portion and parallel to the pair of short sides, and a second bending portion bent from the first bending portion, A third bending portion bent from the second bending portion and parallel to the pair of short sides, and a third bending portion bent from the third bending portion and being parallel to the pair of long sides And may include a fourth bent portion.
  • the fourth bent portion may face the second bent portion, and the temperature sensor may be formed on the fourth bent portion.
  • the temperature sensor may be a chip type thermistor.
  • the battery pack according to an embodiment of the present invention can accurately detect the temperature of the battery cell while minimizing the influence of heat generated in other circuit elements formed on the circuit board by forming a temperature sensor in an isolation region, Can be measured.
  • FIG. 1 is a perspective view illustrating a battery pack according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view showing the battery cell of FIG.
  • 3A is a plan view showing a protection circuit module in a battery pack according to an embodiment of the present invention.
  • FIG. 3B is an enlarged plan view showing the isolation region of FIG. 3A.
  • 4A and 4B are plan views showing an isolation region according to another embodiment of the present invention.
  • 5A and 5B are plan views illustrating an isolation region according to another embodiment of the present invention.
  • FIG. 1 is a perspective view illustrating a battery pack according to an embodiment of the present invention.
  • 2 is an exploded perspective view showing the battery cell of FIG. 3A is a plan view showing a protection circuit module in a battery pack according to an embodiment of the present invention.
  • FIG. 3B is an enlarged plan view showing the isolation region of FIG. 3A.
  • a battery pack 100 includes a battery cell 110 and a protection circuit module 120.
  • the battery cell 110 includes an electrode assembly 111 and a case 114 for receiving the electrode assembly 111.
  • the electrode assembly 111 is formed by winding or stacking a laminate of a first electrode plate 111a, a separator 111c, and a second electrode plate 111b formed in a thin plate or film shape.
  • the first electrode plate 111a can operate as an anode and the second electrode plate 111b can operate as a cathode.
  • the first electrode plate 111a and the second electrode plate 111b may be disposed at different polarities from one another according to the selection of a person skilled in the art.
  • the first electrode plate 111a is formed by applying a first electrode active material such as a transition metal oxide to a first electrode current collector formed of a metal foil such as aluminum.
  • the first electrode plate 111a is a region where the first active material is not applied, .
  • a first electrode tab 112 is attached to the first electrode non-coated portion.
  • the first electrode tab 112 may be attached to the first electrode non-conductive portion by welding.
  • One end of the first electrode tab 112 is electrically connected to the first electrode plate 111a and the other end of the first electrode tab 112 is extended to the outside of the case 114.
  • the second electrode plate 111b is formed by applying a second electrode active material such as graphite or carbon to a second electrode current collector formed of a metal foil such as copper or nickel, Electrode uncoated portion.
  • a second electrode tab 113 is attached to the second electrode non-coated portion.
  • the second electrode tab 113 may be attached to the second electrode non-conductive portion by welding.
  • One end of the second electrode tab 113 is electrically connected to the second electrode plate 111b and the other end of the second electrode tab 113 protrudes outside the case 114.
  • the first electrode tab 112 and the second electrode tab 113 are surrounded by insulating members 112a and 113a and are not electrically shorted to the case 114.
  • the separator 111c is positioned between the first electrode plate 111a and the second electrode plate 111b to prevent short-circuiting and to enable movement of lithium ions.
  • the separator 111c may be made of polyethylene, polypropylene or a composite film of polyethylene and polypropylene.
  • the material of the separator 111c does not limit the scope of the present invention.
  • the case 114 houses the electrode assembly 111.
  • the case 114 may be formed in a pouch form so that the electrode assembly 111 can be received and sealed.
  • the case 114 includes a lower case 115 receiving the electrode assembly 111 and an upper case 116 covering the electrode assembly 111 and coupled to the lower case 115.
  • the lower case 115 is formed with a receiving groove 115a through which the electrode assembly 111 can be received through a press or the like and the upper case 116
  • a sealing portion 115b for sealing with the sealing portion 115b is formed.
  • the sealing portion 115b may be formed along one side and the other side where the lower case 115 and the upper case 116 are in contact with each other.
  • the case 114 includes two long sides facing the lower case 115 and the upper case 116 and two short sides facing each other and perpendicular to the two long sides.
  • the first and second electrode tabs 112 and 113 of the electrode assembly 111 are connected to the lower case 115 and the upper case 116 through the short sides of the short sides, do.
  • the insulating members 112a and 113a formed on the first and second electrode tabs 112 and 113 are sealed to the sealing portion 115b. That is, the insulation members 112a and 113a are formed at a portion where the first and second electrode tabs 112 and 113 and the sealing portion 115b are in contact with each other, Thereby preventing short-circuiting with the case 114.
  • the case 114 is formed in a multilayer structure having a first insulating layer 114a, a metal layer 114b, and a second insulating layer 114c.
  • the first insulating layer 114a is an inner surface of the case 114, and is formed of a material having an insulating property and a heat adhesion property.
  • the first insulating layer 114a is formed on one surface of the metal layer 114b and forms an inner surface of the case 114 facing the electrode assembly 111.
  • the first insulating layer 114a may be formed of unstretched casted polypropylene (CPP) or its equivalent that does not react with an electrolyte or the like.
  • CPP unstretched casted polypropylene
  • the metal layer 114b is sandwiched between the first insulating layer 114a and the second insulating layer 114c to prevent water and oxygen from entering from the outside and the electrolyte filled in the case 114 to the outside It prevents the outflow.
  • the metal layer 114b serves to maintain the mechanical strength of the case 114.
  • the metal layer 114b may be formed of aluminum.
  • the second insulating layer 114c is an outer surface of the case 114 to mitigate mechanical and chemical impacts with external electronic devices.
  • the second insulating layer 114c is formed on the other surface of the metal layer 114b and forms the outer surface of the case 114.
  • the second insulating layer 114c may be formed of nylon, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polybutylene naphthalate (PBN), or the like.
  • case 114 may be formed of a metal can, not just a pouch type. That is, the battery cell 110 may have a rectangular shape other than the pouch type.
  • the protection circuit module 120 is electrically connected to the battery cell 110 to control charge / discharge of the battery cell 110.
  • the protection circuit module 120 includes a circuit board 121 and a plurality of elements formed on the circuit board 121.
  • the circuit board 121 is made of resin and is formed of a substantially flat rectangular plate.
  • the circuit board 121 may be a printed circuit board (PCB).
  • the circuit board 121 may include a circuit for controlling charging and discharging of the battery cell 110, or a protection circuit such as a circuit for preventing overdischarge and overcharge.
  • a first electrode terminal 122 and a second electrode terminal 123 to which the first electrode tab 112 and the second electrode tab 113 of the battery cell 110 are coupled are formed on one surface of the circuit board 121, .
  • the first electrode tab 122 is electrically connected to the first electrode tab 122 by welding
  • the second electrode tab 123 is electrically connected to the second electrode tab 113 by welding. Respectively.
  • the circuit board 121 is formed of a substantially flat rectangular plate and includes a pair of long sides 121a and a pair of short sides 121b connecting the pair of long sides 121a.
  • the pair of long sides 121a refers to a side of the circuit board 121 that has a relatively longer length.
  • the isolation region 130 is spaced apart from the circuit board 121 by a predetermined distance and one end of the isolation region 130 is connected to the circuit board 121 and is not completely separated from the circuit board 121.
  • the isolation region 130 has a constant width W1 from any one of the pair of long sides 121a and is formed parallel to the pair of long sides 121a. That is, the isolation region 130 is formed in a substantially one-letter shape, and one end of the isolation region 130 is connected to the circuit board 121. Also, a spaced space S exists between a part of the isolation region 130 and the circuit board 121.
  • the isolation region 130 is formed to have a constant width W1 from the long side 121a toward the inside of the circuit board 121. [ Therefore, since the isolation region 130 is formed on the inner side of the circuit board 121 without protruding outside the circuit board 121, the isolation region 130 is formed within a range that does not enlarge the size of the battery pack 100 .
  • the width W1 of the isolation region 130 is relatively narrow compared to the width W of the circuit board 121 (W1 ⁇ W).
  • the isolation region 130 is located between the first electrode terminal 121 and the second electrode terminal 122.
  • a temperature sensor 131 for sensing the temperature of the battery cell 110 is formed in the isolation region 130.
  • the temperature sensor 131 may be formed of a chip-type thermistor.
  • the thermistor 131 is a device whose resistance varies according to the temperature of the battery cell 110. Therefore, the temperature of the battery cell 110 can be measured by measuring the resistance value of the thermistor 131.
  • the protection circuit in the protection circuit module 120 may operate or the capacity of the battery cell 110 may be predicted according to the measured temperature of the battery cell 110.
  • the thermistor 131 is a chip type, it can be mounted on the circuit board 121 to reduce the size of the protection circuit module 120.
  • the thermistor 131 mounted on the circuit board 121 is influenced not only by the temperature of the battery cell 110 but also by heat generated in other circuit elements mounted on the circuit board 121.
  • the thermistor 131 is formed at the other end opposite to the one end connected to the circuit board 121 in the isolation region 130, and the influence of heat generated in other circuit elements formed in the circuit board 121 Can be minimized.
  • 4A and 4B are plan views showing an isolation region according to another embodiment of the present invention.
  • the protection circuit module 120 includes a circuit board 121 and a plurality of elements formed on the circuit board 121.
  • An isolation region 230 is formed on one side of the protection circuit module 120.
  • the circuit board 121 is formed of a substantially flat rectangular plate and includes a pair of long sides 121a and a pair of short sides 121b connecting the pair of long sides 121a.
  • the pair of long sides 121a refers to a side of the circuit board 121 that has a relatively longer length.
  • the isolation region 230 is spaced apart from the circuit board 121 by a predetermined distance and one end of the isolation region 230 is connected to the circuit board 121 and is not completely separated from the circuit board 121. Therefore, a space S is present between the part of the isolation region 230 and the circuit board 121.
  • the isolation region 230 is formed at one end of the circuit board 121, that is, at a portion adjacent to one of the pair of short sides 121b. More specifically, the isolation region 230 includes a connection portion 230a connected to the circuit board 121 and formed in parallel with the pair of short sides 121b, and a connection portion 230b bent from the connection portion 230a, And a bent portion 230b formed in parallel with the base portion 230a.
  • the isolation region 230 is formed in the vicinity of the edge of the circuit board 121, and is formed by rotating the 'A' character clockwise by 90 degrees. Since the isolation region 230 is formed on the inside of the circuit board 121 without protruding outside the circuit board 121, the isolation region 230 is formed within a range that does not enlarge the size of the battery pack 100 .
  • a temperature sensor 231 for sensing the temperature of the battery cell 110 is formed in the bent portion 230b.
  • the temperature sensor 231 may be formed of a chip type thermistor.
  • the thermistor 231 is a device whose resistance varies according to the temperature of the battery cell 110. Therefore, the temperature of the battery cell 110 can be measured by measuring the resistance value of the thermistor 231.
  • the protection circuit in the protection circuit module 120 may operate or the capacity of the battery cell 110 may be predicted according to the measured temperature of the battery cell 110.
  • the thermistor 231 may be mounted on the circuit board 121 to reduce the size of the protection circuit module 120 because the thermistor 231 is of a chip type.
  • the thermistor 231 mounted on the circuit board 121 is influenced not only by the temperature of the battery cell 110 but also by heat generated in other circuit elements mounted on the circuit board 121.
  • the thermistor 231 is formed in the isolation region 230, which is partially separated from the circuit board 121, so that the influence on the thermistor 231 can be minimized and the temperature of the battery cell 110 can be accurately sensed.
  • the thermistor 231 is formed in the bent portion 230b farthest from the circuit board 121 in the isolation region 230 and is formed by heat generated in other circuit elements formed on the circuit board 121 The influence can be minimized.
  • 5A and 5B are plan views illustrating an isolation region according to another embodiment of the present invention.
  • the protection circuit module 120 includes a circuit board 121 and a plurality of elements formed on the circuit board 121.
  • an isolation region 330 is formed on one side of the protection circuit module 120.
  • the circuit board 121 is formed of a substantially flat rectangular plate and includes a pair of long sides 121a and a pair of short sides 121b connecting the pair of long sides 121a.
  • the pair of long sides 121a refers to a side of the circuit board 121 that has a relatively longer length.
  • the isolation region 330 is spaced apart from the circuit board 121 by a predetermined distance and one end of the isolation region 330 is connected to the circuit board 121 and is not completely separated from the circuit board 121. Therefore, a spaced space S exists between a part of the isolation region 330 and the circuit board 121.
  • the isolation region 330 is formed at one end of the circuit board 121, that is, at a portion adjacent to one of the pair of short sides 121b.
  • the isolation region 330 includes a connection portion 330a connected to the circuit board 121 and parallel to the pair of long sides 121a, a pair of short sides 121b bent from the connection portion 330a, A second bent portion 330c bent in parallel with the pair of long sides 121a from the first bent portion 330b and a second bent portion 330b formed in parallel with the first bent portion 330b, A third bent portion 330d bent in a direction parallel to the pair of short sides 121b and a fourth bent portion 330e bent from the third bent portion 330d and formed parallel to the pair of long sides 121a, . That is, the isolation region 330 is formed so as to have at least one bent portion, which is substantially similar to an 'd' shape.
  • the fourth bent portion 330e is bent toward the inside of the circuit board 121 and is formed to face the second bent portion 330c. Therefore, since the isolation region 330 is formed on the inner side of the circuit board 121 without protruding outside the circuit board 121, the isolation region 330 is formed within a range that does not enlarge the size of the battery pack 100 .
  • a temperature sensor 331 for sensing the temperature of the battery cell 110 is formed on the fourth bent portion 330e.
  • the temperature sensor 331 may be formed of a chip type thermistor.
  • the thermistor 331 is a device whose resistance varies according to the temperature of the battery cell 110. Therefore, the temperature of the battery cell 110 can be measured by measuring the resistance value of the thermistor 331.
  • the protection circuit in the protection circuit module 120 may operate or the capacity of the battery cell 110 may be predicted according to the measured temperature of the battery cell 110.
  • the thermistor 331 Since the thermistor 331 is of a chip type, it can be mounted on the circuit board 121 to reduce the size of the protection circuit module 120.
  • the thermistor 331 mounted on the circuit board 121 is influenced not only by the temperature of the battery cell 110 but also by heat generated in other circuit elements mounted on the circuit board 121.
  • the thermistor 331 is formed in the isolation region 330, which is partially separated from the circuit board 121, so that the influence thereof is minimized, and the temperature of the battery cell 110 can be accurately detected.
  • the thermistor 331 is formed in the fourth bent portion 330e farthest from the circuit board 121 in the isolation region 330 and is formed in other circuit elements formed on the circuit board 121 The influence by the heat can be minimized.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The present invention relates to a battery pack having a protection circuit module including a temperature sensor mounted therein, which can accurately measure temperature of a battery cell while minimizing an influence which may be caused by heat generated by circuit elements formed on a circuit board. For example, disclosed is a battery pack comprising: a battery cell; and a protection circuit module which is electrically connected to the battery cell and has a circuit board including a temperature sensor that is mounted thereon and measures temperature of the battery cell, wherein an isolation region is formed on one side of the circuit board, a part of the isolation region is spaced apart from the circuit board, and the isolation region includes the temperature sensor mounted therein.

Description

배터리 팩Battery pack
본 발명은 배터리 팩에 관한 것이다.The present invention relates to a battery pack.
이차 전지는 충전이 불가능한 일차 전지와는 달리, 충·방전이 가능한 전지를 말하는 것으로서, 휴대폰, PDA, 노트북 컴퓨터 등의 소형 첨단 전자기기 분야뿐만 아니라 에너지 저장 시스템에 이르기까지 널리 사용되고 있다.Unlike a primary battery, which can not be recharged, a secondary battery refers to a battery capable of charging and discharging, and is widely used not only in a field of small-sized high-end electronic devices such as a mobile phone, a PDA, and a notebook computer but also an energy storage system.
이러한 이차 전지는 충·방전을 통해 오랜 기간 사용되므로 안정성이 큰 관심의 대상이다. 이차 전지가 충·방전시 발생하는 열, 즉 이차 전지의 온도를 제대로 관리하지 않으면 이차 전지는 열화되어 수명을 확보할 수 없다. 이와 같이, 이차 전지에 있어서 온도의 제어는 중요한 과제이다.Such a secondary battery is used for a long period of time through charging and discharging, so stability is a subject of great interest. If the temperature of the secondary battery is insufficiently controlled, that is, the temperature of the secondary battery, the secondary battery deteriorates and the lifetime can not be secured. As described above, temperature control in a secondary battery is an important problem.
본 발명은 회로 기판에 형성된 회로 소자들에서 발생하는 열에 의한 영향을 최소화 하면서 배터리 셀의 온도를 정확하게 측정할 수 있는 온도 센서가 실장된 보호 회로 모듈을 갖는 배터리 팩을 제공한다.The present invention provides a battery pack having a protection circuit module mounted with a temperature sensor that can accurately measure the temperature of a battery cell while minimizing the influence of heat generated in circuit elements formed on a circuit board.
본 발명에 의한 배터리 팩은 배터리 셀; 및 상기 배터리 셀과 전기적으로 연결되며, 상기 배터리 셀의 온도를 측정하는 온도 센서가 실장된 회로 기판을 갖는 보호 회로 모듈;을 포함하고, 상기 회로 기판의 일측에는 일부분이 상기 회로 기판으로부터 이격된 격리 영역이 형성되고, 상기 격리 영역에는 상기 온도 센서가 실장된 것을 특징으로 한다. A battery pack according to the present invention includes a battery cell; And a protection circuit module electrically connected to the battery cell, the protection circuit module having a circuit board mounted with a temperature sensor for measuring a temperature of the battery cell, wherein a part of the circuit board is separated from the circuit board, And the temperature sensor is mounted on the isolation region.
상기 격리 영역은 상기 회로 기판의 내측에 형성될 수 있다.The isolation region may be formed inside the circuit board.
상기 회로 기판은 직사각형 형태로 형성되며, 한 쌍의 장변과, 상기 한 쌍의 장변을 연결하며 상기 한 쌍의 장변의 길이보다 짧은 한 쌍의 단변을 포함할 수 있다.The circuit board is formed in a rectangular shape and may include a pair of long sides and a pair of short sides connecting the pair of long sides and shorter than the length of the pair of long sides.
상기 격리 영역은 상기 한 쌍의 장변 중 어느 하나로부터 상기 회로 기판의 내측을 향해 일정 너비를 가지며, 상기 장변과 평행하게 형성될 수 있다.The isolation region may have a predetermined width from one of the pair of long sides to the inside of the circuit board, and may be formed parallel to the long side.
상기 격리 영역은 상기 한 쌍의 단변 중 어느 하나로부터 상기 회로 기판의 내측을 향해 형성될 수 있다.The isolation region may be formed from any one of the pair of short sides toward the inside of the circuit board.
상기 격리 영역은 상기 회로 기판과 연결되며 상기 한 쌍의 단변과 평행한 연결부와, 상기 연결부로부터 절곡되며 상기 한 쌍의 장변과 평행한 절곡부를 포함할 수 있다.The isolation region may include a connecting portion connected to the circuit board and parallel to the pair of short sides, and a bent portion bent from the connecting portion and parallel to the pair of long sides.
상기 온도 센서는 상기 절곡부에 형성될 수 있다.The temperature sensor may be formed in the bent portion.
상기 격리 영역은 상기 회로 기판과 연결되며 상기 한 쌍의 장변과 평행한 연결부와, 상기 연결부로부터 절곡되며 상기 한 쌍의 단변과 평행한 제1절곡부와, 상기 제1절곡부로부터 절곡되며 상기 한 쌍의 장변과 평행한 제2절곡부와, 상기 제2절곡부로부터 절곡되며 상기 한 쌍의 단변과 평행한 제3절곡부와, 상기 제3절곡부로부터 절곡되며 상기 한 쌍의 장변과 평행한 제4절곡부를 포함할 수 있다.Wherein the isolation region includes a connection portion connected to the circuit board and parallel to the pair of long sides, a first bending portion bent from the connection portion and parallel to the pair of short sides, and a second bending portion bent from the first bending portion, A third bending portion bent from the second bending portion and parallel to the pair of short sides, and a third bending portion bent from the third bending portion and being parallel to the pair of long sides And may include a fourth bent portion.
상기 제4절곡부는 상기 제2절곡부와 마주보며, 상기 온도 센서는 상기 제4절곡부에 형성될 수 있다.The fourth bent portion may face the second bent portion, and the temperature sensor may be formed on the fourth bent portion.
상기 온도 센서는 칩 타입의 써미스터일 수 있다.The temperature sensor may be a chip type thermistor.
본 발명의 일 실시예에 따른 배터리 팩은 회로 기판으로부터 일부분이 이격된 격리 영역에 온도 센서를 형성함으로써, 회로 기판에 형성된 다른 회로 소자들에서 발생되는 열에 의한 영향을 최소화하면서 배터리 셀의 온도를 정확하게 측정할 수 있다.The battery pack according to an embodiment of the present invention can accurately detect the temperature of the battery cell while minimizing the influence of heat generated in other circuit elements formed on the circuit board by forming a temperature sensor in an isolation region, Can be measured.
도 1은 본 발명의 일 실시예에 따른 배터리 팩을 도시한 사시도이다. 1 is a perspective view illustrating a battery pack according to an embodiment of the present invention.
도 2는 도 1의 배터리 셀을 도시한 분해 사시도이다. 2 is an exploded perspective view showing the battery cell of FIG.
도 3a는 본 발명의 일 실시예에 따른 배터리 팩에서 보호 회로 모듈을 도시한 평면도이다. 3A is a plan view showing a protection circuit module in a battery pack according to an embodiment of the present invention.
도 3b는 도 3a의 격리 영역을 도시한 확대 평면도이다.FIG. 3B is an enlarged plan view showing the isolation region of FIG. 3A.
도 4a 및 도 4b는 본 발명의 다른 실시예에 따른 격리 영역을 도시한 평면도이다.4A and 4B are plan views showing an isolation region according to another embodiment of the present invention.
도 5a 및 도 5b는 본 발명의 또 다른 실시예에 따른 격리 영역을 도시한 평면도이다. 5A and 5B are plan views illustrating an isolation region according to another embodiment of the present invention.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 발명의 실시예들은 당해 기술 분야에서 통상의 지식을 가진 자에게 본 발명을 더욱 완전하게 설명하기 위하여 제공되는 것이며, 하기 실시예는 여러 가지 다른 형태로 변형될 수 있으며, 본 발명의 범위가 하기 실시예에 한정되는 것은 아니다. 오히려, 이들 실시예는 본 개시를 더욱 충실하고 완전하게 하고, 당업자에게 본 발명의 사상을 완전하게 전달하기 위하여 제공되는 것이다.The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more faithful and complete, and will fully convey the scope of the invention to those skilled in the art.
또한, 이하의 도면에서 각 층의 두께나 크기는 설명의 편의 및 명확성을 위하여 과장 또는 축소된 것이며, 도면상에서 동일 부호는 동일한 요소를 지칭한다. 본 명세서에서 사용된 바와 같이, 용어 "및/또는" 는 해당 열거된 항목 중 어느 하나 및 하나 이상의 모든 조합을 포함한다. In the following drawings, the thickness and the size of each layer are exaggerated or reduced for convenience and clarity of description, and the same reference numerals denote the same elements in the drawings. As used herein, the term " and / or " includes any and all combinations of any of the listed items.
또한, "하부(beneath)", "아래(below)", "낮은(lower)", "상부(above)", "위(upper)"와 같은 공간에 관련된 용어가 도면에 도시된 한 요소 또는 특징과 다른 요소 또는 특징의 용이한 이해를 위해 이용된다. 이러한 공간에 관련된 용어는 이차 전지의 다양한 제조 공정 또는 사용 상태에 따라 본 발명의 용이한 이해를 위한 것이며, 본 발명을 한정하기 위한 것은 아니다. 예를 들어, 도면의 이차 전지가 뒤집어지면, "하부" 또는 "아래"로 설명된 요소는 "상부" 또는 "위에"로 된다. 따라서, "아래"는 "상부" 또는 "아래"를 포괄한다.It is also to be understood that terms related to space such as "beneath", "below", "lower", "above", "upper" And is used for an easy understanding of features and other elements or features. The term related to such a space is for easy understanding of the present invention depending on various manufacturing processes or use states of the secondary battery, and is not intended to limit the present invention. For example, if the secondary cell of the drawing is inverted, the elements described as "lower" or "lower" will be "upper" or "above." Accordingly, " below " includes " upper " or " lower ".
도 1은 본 발명의 일 실시예에 따른 배터리 팩을 도시한 사시도이다. 도 2는 도 1의 배터리 셀을 도시한 분해 사시도이다. 도 3a는 본 발명의 일 실시예에 따른 배터리 팩에서 보호 회로 모듈을 도시한 평면도이다. 도 3b는 도 3a의 격리 영역을 도시한 확대 평면도이다.1 is a perspective view illustrating a battery pack according to an embodiment of the present invention. 2 is an exploded perspective view showing the battery cell of FIG. 3A is a plan view showing a protection circuit module in a battery pack according to an embodiment of the present invention. FIG. 3B is an enlarged plan view showing the isolation region of FIG. 3A.
도 1 내지 도 3b를 참조하면, 본 발명의 일 실시예에 따른 배터리 팩(100)은 배터리 셀(110) 및 보호 회로 모듈(120)를 포함한다.1 to 3B, a battery pack 100 according to an embodiment of the present invention includes a battery cell 110 and a protection circuit module 120.
상기 배터리 셀(110)은 전극 조립체(111)와 상기 전극 조립체(111)를 수용하는 케이스(114)를 포함한다. 상기 전극 조립체(111)는 얇은 판형 혹은 막형으로 형성된 제 1 전극판(111a), 세퍼레이터(111c) 및 제 2 전극판(111b)의 적층체를 권취하거나 겹쳐서 형성한다. 여기서, 제 1 전극판(111a)은 양극으로서 동작할 수 있으며, 제 2 전극판(111b)은 음극으로서 동작할 수 있다. 물론, 당업자의 선택에 따라 상기 제 1 전극판(111a) 및 제 2 전극판(111b)은 서로 극성을 달리하여 배치될 수도 있다. The battery cell 110 includes an electrode assembly 111 and a case 114 for receiving the electrode assembly 111. The electrode assembly 111 is formed by winding or stacking a laminate of a first electrode plate 111a, a separator 111c, and a second electrode plate 111b formed in a thin plate or film shape. Here, the first electrode plate 111a can operate as an anode and the second electrode plate 111b can operate as a cathode. Of course, the first electrode plate 111a and the second electrode plate 111b may be disposed at different polarities from one another according to the selection of a person skilled in the art.
상기 제 1 전극판(111a)은 알루미늄과 같은 금속 포일로 형성된 제 1 전극 집전체에 전이금속산화물 등의 제 1 전극 활물질을 도포함으로써 형성되며, 제 1 활물질이 도포되지 않는 영역인 제 1 전극 무지부를 포함한다. 또한, 상기 제 1 전극 무지부에는 제 1 전극탭(112)이 부착된다. 예를 들어, 상기 제 1 전극탭(112)은 용접에 의해 상기 제 1 전극 무지부에 부착될 수 있다. 상기 제 1 전극탭(112)의 일단은 상기 제 1 전극판(111a)에 전기적으로 연결되고, 상기 제 1 전극탭(112)의 타단은 상기 케이스(114)의 외부로 연장되어 돌출된다. The first electrode plate 111a is formed by applying a first electrode active material such as a transition metal oxide to a first electrode current collector formed of a metal foil such as aluminum. The first electrode plate 111a is a region where the first active material is not applied, . A first electrode tab 112 is attached to the first electrode non-coated portion. For example, the first electrode tab 112 may be attached to the first electrode non-conductive portion by welding. One end of the first electrode tab 112 is electrically connected to the first electrode plate 111a and the other end of the first electrode tab 112 is extended to the outside of the case 114. [
상기 제 2 전극판(111b)은 구리 또는 니켈과 같은 금속 포일로 형성된 제 2 전극 집전체에 흑연 또는 탄소 등의 제 2 전극 활물질을 도포함으로써 형성되며, 제 2 활물질이 도포되지 않는 영역인 제 2 전극 무지부를 포함한다. 또한, 상기 제 2 전극 무지부에는 제 2 전극탭(113)이 부착된다. 예를 들어, 상기 제 2 전극탭(113)은 용접에 의해 상기 제 2 전극 무지부에 부착될 수 있다. 상기 제 2 전극탭(113)의 일단은 상기 제 2 전극판(111b)에 전기적으로 연결되고, 상기 제 2 전극탭(113)의 타단은 상기 케이스(114)의 외부로 연장되어 돌출된다.The second electrode plate 111b is formed by applying a second electrode active material such as graphite or carbon to a second electrode current collector formed of a metal foil such as copper or nickel, Electrode uncoated portion. A second electrode tab 113 is attached to the second electrode non-coated portion. For example, the second electrode tab 113 may be attached to the second electrode non-conductive portion by welding. One end of the second electrode tab 113 is electrically connected to the second electrode plate 111b and the other end of the second electrode tab 113 protrudes outside the case 114.
여기서, 상기 제 1 전극탭(112) 및 제 2 전극탭(113)은 절연 부재(112a, 113a)로 감싸여, 상기 케이스(114)와 전기적으로 쇼트되지 않는다. The first electrode tab 112 and the second electrode tab 113 are surrounded by insulating members 112a and 113a and are not electrically shorted to the case 114. [
상기 세퍼레이터(111c)는 제 1 전극판(111a)과 제 2 전극판(111b)의 사이에 위치되어 쇼트를 방지하고 리튬 이온의 이동을 가능하게 하는 역할을 수행한다. 상기 세퍼레이터(111c)는 폴리에틸렌이나, 폴리 프로필렌이나, 폴리 에틸렌과 폴리 프로필렌의 복합 필름으로 이루어질 수 있다. 한편, 상기 세퍼레이터(111c)의 재질로서 본 발명의 범위를 한정하는 것은 아니다.The separator 111c is positioned between the first electrode plate 111a and the second electrode plate 111b to prevent short-circuiting and to enable movement of lithium ions. The separator 111c may be made of polyethylene, polypropylene or a composite film of polyethylene and polypropylene. On the other hand, the material of the separator 111c does not limit the scope of the present invention.
상기 케이스(114)는 상기 전극 조립체(111)를 수납한다. 예를 들어, 상기 케이스(114)는 상기 전극 조립체(111)를 수납하여 밀봉할 수 있도록 파우치 형태로 형성될 수 있다. 상기 케이스(114)는 상기 전극 조립체(111)가 수납되는 하부 케이스(115)와 상기 전극 조립체(111)를 덮으며 상기 하부 케이스(115)에 결합되는 상부 케이스(116)를 포함한다. 상기 하부 케이스(115)에는 프레스(press) 가공 등을 통해 상기 전극 조립체(111)가 수용될 수 있는 수용홈(115a)이 형성되고, 상기 수용홈(115a)의 외주연에는 상기 상부 케이스(116)와의 실링을 위한 실링부(115b)가 형성된다. 상기 실링부(115b)는 상기 하부 케이스(115)와 상부 케이스(116)가 일체로 접하여 있는 한 변과 나머지 세변을 따라서 모두 형성될 수 있다. 상기 케이스(114)는 상기 하부 케이스(115)와 상부 케이스(116)가 마주하는 두개의 장변과 상기 두개의 장변과 수직을 이루며 마주하는 두개의 단변을 포함한다. 여기서, 상기 전극 조립체(111)의 제 1,2 전극탭(112, 113)은 상기 두개의 단변 중 하부 케이스(115)와 상부 케이스(116)가 연결되는 단변과 마주보는 측의 단변을 통해 인출된다. 이때, 상기 제 1,2 전극탭(112, 113)에 형성된 절연 부재(112a, 113a)가 상기 실링부(115b)에 실링된다. 즉, 상기 절연 부재(112a, 113a)는 상기 제 1,2 전극탭(112, 113)과 실링부(115b)가 접촉하는 부분에 형성되어 상기 제 1,2 전극탭(112, 113)이 상기 케이스(114)와 쇼트되는 것을 방지한다.The case 114 houses the electrode assembly 111. For example, the case 114 may be formed in a pouch form so that the electrode assembly 111 can be received and sealed. The case 114 includes a lower case 115 receiving the electrode assembly 111 and an upper case 116 covering the electrode assembly 111 and coupled to the lower case 115. The lower case 115 is formed with a receiving groove 115a through which the electrode assembly 111 can be received through a press or the like and the upper case 116 A sealing portion 115b for sealing with the sealing portion 115b is formed. The sealing portion 115b may be formed along one side and the other side where the lower case 115 and the upper case 116 are in contact with each other. The case 114 includes two long sides facing the lower case 115 and the upper case 116 and two short sides facing each other and perpendicular to the two long sides. The first and second electrode tabs 112 and 113 of the electrode assembly 111 are connected to the lower case 115 and the upper case 116 through the short sides of the short sides, do. At this time, the insulating members 112a and 113a formed on the first and second electrode tabs 112 and 113 are sealed to the sealing portion 115b. That is, the insulation members 112a and 113a are formed at a portion where the first and second electrode tabs 112 and 113 and the sealing portion 115b are in contact with each other, Thereby preventing short-circuiting with the case 114.
상기 케이스(114)는 제 1 절연층(114a), 금속층(114b) 및 제 2 절연층(114c)을 갖는 다층 구조로 형성된다. The case 114 is formed in a multilayer structure having a first insulating layer 114a, a metal layer 114b, and a second insulating layer 114c.
상기 제 1 절연층(114a)은 상기 케이스(114)의 내측면으로, 절연성 및 열접착성을 가지는 물질로 형성된다. 또한, 상기 제 1 절연층(114a)은 상기 금속층(114b)의 일면에 형성되며, 상기 전극 조립체(111)와 대향하는 케이스(114)의 내측면을 이룬다. 상기 제 1 절연층(114a)은 전해액 등과 반응하지 않는 무연신 폴리프로핀렌(Casted Polypropylene:CPP) 또는 그 등가물로 형성될 수 있다. 상기 하부 케이스(115)에 전극 조립체(111)를 수납하고 상부 케이스(116)으로 덮으면, 상기 케이스(114)의 제 1 절연층(114a)이 서로 접촉하게 된다. 따라서, 상기 실링부(115b)를 열융착시키면, 상기 제 1 절연층(114a)이 서로 접착되어 상기 케이스(114)가 밀봉된다.The first insulating layer 114a is an inner surface of the case 114, and is formed of a material having an insulating property and a heat adhesion property. The first insulating layer 114a is formed on one surface of the metal layer 114b and forms an inner surface of the case 114 facing the electrode assembly 111. [ The first insulating layer 114a may be formed of unstretched casted polypropylene (CPP) or its equivalent that does not react with an electrolyte or the like. When the electrode assembly 111 is housed in the lower case 115 and is covered with the upper case 116, the first insulating layer 114a of the case 114 comes into contact with each other. Accordingly, when the sealing portion 115b is thermally fused, the first insulating layer 114a is adhered to each other and the case 114 is sealed.
상기 금속층(114b)은 상기 제 1 절연층(114a)과 제 2 절연층(114c) 사이에 개재되어 있으며, 외부로부터 수분과 산소가 유입되는 것을 막고 상기 케이스(114) 내부에 채워진 전해액이 외부로 유출되는 것을 방지하는 역할을 한다. 또한, 상기 금속층(114b)은 상기 케이스(114)의 기계적 강도를 유지하는 역할을 한다. 일반적으로 상기 금속층(114b)은 알루미늄으로 형성될 수 있다. The metal layer 114b is sandwiched between the first insulating layer 114a and the second insulating layer 114c to prevent water and oxygen from entering from the outside and the electrolyte filled in the case 114 to the outside It prevents the outflow. In addition, the metal layer 114b serves to maintain the mechanical strength of the case 114. In general, the metal layer 114b may be formed of aluminum.
상기 제 2 절연층(114c)은 상기 케이스(114)의 외측면으로, 외부 전자기기와의 기계적, 화학적 충격을 완화하는 역할을 한다. 또한, 상기 제 2 절연층(114c)은 상기 금속층(114b)의 타면에 형성되며, 상기 케이스(114)의 외측면을 이룬다. 상기 제 2 절연층(114c)은 나일론, 폴리에틸렌 테레프탈레이트(PET), 폴리부틸렌 테레프탈레이트(PBT), 폴리부틸렌 나프탈레이트(PBN) 또는 그 등가물로 형성될 수 있다.The second insulating layer 114c is an outer surface of the case 114 to mitigate mechanical and chemical impacts with external electronic devices. The second insulating layer 114c is formed on the other surface of the metal layer 114b and forms the outer surface of the case 114. The second insulating layer 114c may be formed of nylon, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polybutylene naphthalate (PBN), or the like.
더불어, 상기 케이스(114)는 파우치 형태뿐만 아니라, 금속 재질로 이루어진 캔으로 이루어질 수도 있다. 즉, 상기 배터리 셀(110)은 파우치형 이외에도 각형으로 이루어질 수도 있다. In addition, the case 114 may be formed of a metal can, not just a pouch type. That is, the battery cell 110 may have a rectangular shape other than the pouch type.
상기 보호 회로 모듈(120)은 상기 배터리 셀(110)과 전기적으로 연결되어, 상기 배터리 셀(110)의 충/방전을 제어한다. 상기 보호 회로 모듈(120)은 회로 기판(121)과 상기 회로 기판(121)에 형성된 다수의 소자들을 포함한다. The protection circuit module 120 is electrically connected to the battery cell 110 to control charge / discharge of the battery cell 110. The protection circuit module 120 includes a circuit board 121 and a plurality of elements formed on the circuit board 121.
구체적으로, 도 3a 및 도 3b를 참조하면, 상기 회로 기판(121)은 수지로 이루어지며, 대략 평평한 직사각형의 플레이트로 형성된다. 예를 들어, 상기 회로 기판(121)은 인쇄 회로 기판(PCB: Printed Circuit Board)일 수 있다. 또한, 상기 회로 기판(121)은 상기 배터리 셀(110)의 충전 및 방전을 제어하는 회로, 또는 과방전 및 과충전을 방지하는 회로와 같은 보호 회로 등을 포함할 수 있다. 상기 회로 기판(121)의 일면에는 상기 배터리 셀(110)의 제 1 전극탭(112) 및 제 2 전극탭(113)이 결합되는 제 1 전극 단자(122) 및 제 2 전극 단자(123)가 형성된다. 구체적으로, 상기 제 1 전극 단자(122)에는 제 1 전극탭(112)이 용접에 의해 전기적으로 접속되고, 상기 제 2 전극 단자(123)에는 제 2 전극탭(113)이 용접에 의해 전기적으로 접속된다. 3A and 3B, the circuit board 121 is made of resin and is formed of a substantially flat rectangular plate. For example, the circuit board 121 may be a printed circuit board (PCB). In addition, the circuit board 121 may include a circuit for controlling charging and discharging of the battery cell 110, or a protection circuit such as a circuit for preventing overdischarge and overcharge. A first electrode terminal 122 and a second electrode terminal 123 to which the first electrode tab 112 and the second electrode tab 113 of the battery cell 110 are coupled are formed on one surface of the circuit board 121, . Specifically, the first electrode tab 122 is electrically connected to the first electrode tab 122 by welding, and the second electrode tab 123 is electrically connected to the second electrode tab 113 by welding. Respectively.
또한, 상기 회로 기판(121)의 일측에는 격리 영역(130)이 형성된다. 상기 회로 기판(121)은 대략 평평한 직사각형의 플레이트로 형성되며, 한 쌍의 장변(121a)과 상기 한 쌍의 장변(121a)을 연결하는 한 쌍의 단변(121b)을 포함한다. 여기서, 한 쌍의 장변(121a)은 상기 회로 기판(121)에서 상대적으로 길이가 더 길게 형성된 변을 말한다. An isolation region 130 is formed on one side of the circuit board 121. The circuit board 121 is formed of a substantially flat rectangular plate and includes a pair of long sides 121a and a pair of short sides 121b connecting the pair of long sides 121a. Here, the pair of long sides 121a refers to a side of the circuit board 121 that has a relatively longer length.
상기 격리 영역(130)은 상기 회로 기판(121)으로부터 일정 간격 이격되되, 일단은 상기 회로 기판(121)과 연결되어 회로 기판(121)으로부터 완전히 분리되지 않는다. 상기 격리 영역(130)은 상기 한 쌍의 장변(121a) 중 어느 하나로부터 일정한 너비(W1)를 가지며, 상기 한 쌍의 장변(121a)과 평행하게 형성된다. 즉, 상기 격리 영역(130)은 대략 일(一)자 형태로 형성되며, 일단이 상기 회로 기판(121)과 연결되어 있다. 또한, 상기 격리 영역(130)의 일부와 회로 기판(121) 사이에는 이격된 공간(S)이 존재한다. The isolation region 130 is spaced apart from the circuit board 121 by a predetermined distance and one end of the isolation region 130 is connected to the circuit board 121 and is not completely separated from the circuit board 121. The isolation region 130 has a constant width W1 from any one of the pair of long sides 121a and is formed parallel to the pair of long sides 121a. That is, the isolation region 130 is formed in a substantially one-letter shape, and one end of the isolation region 130 is connected to the circuit board 121. Also, a spaced space S exists between a part of the isolation region 130 and the circuit board 121.
상기 격리 영역(130)은 상기 장변(121a)으로부터 회로 기판(121)의 내측을 향해 일정한 너비(W1)를 갖도록 형성된다. 따라서, 상기 격리 영역(130)은 회로 기판(121)의 외측으로 돌출되지 않고 상기 회로 기판(121)의 내측에 형성되므로, 배터리 팩(100)의 크기를 기존보다 확장시키지 않는 범위 내에서 형성된다. 상기 격리 영역(130)의 너비(W1)는 상기 회로 기판(121)의 너비(W)에 비해 상대적으로 좁게 형성된다(W1<W). 또한, 상기 격리 영역(130)은 상기 제 1 전극 단자(121)와 제 2 전극 단자(122) 사이에 위치한다. 더불어, 상기 격리 영역(130)에는 배터리 셀(110)의 온도를 감지하는 온도 센서(131)가 형성된다. 예를 들어, 상기 온도 센서(131)는 칩 타입의 써미스터(thermistor)로 형성될 수 있다. 상기 써미스터(131)는 배터리 셀(110)의 온도에 따라 저항값이 변화하는 소자이다. 따라서, 상기 써미스터(131)의 저항값을 측정하여 배터리 셀(110)의 온도를 측정할 수 있다. 여기서, 측정된 배터리 셀(110)의 온도에 따라, 보호 회로 모듈(120) 내의 보호 회로가 동작하거나 배터리 셀(110)의 용량을 예측할 수 있다. The isolation region 130 is formed to have a constant width W1 from the long side 121a toward the inside of the circuit board 121. [ Therefore, since the isolation region 130 is formed on the inner side of the circuit board 121 without protruding outside the circuit board 121, the isolation region 130 is formed within a range that does not enlarge the size of the battery pack 100 . The width W1 of the isolation region 130 is relatively narrow compared to the width W of the circuit board 121 (W1 <W). In addition, the isolation region 130 is located between the first electrode terminal 121 and the second electrode terminal 122. In addition, a temperature sensor 131 for sensing the temperature of the battery cell 110 is formed in the isolation region 130. For example, the temperature sensor 131 may be formed of a chip-type thermistor. The thermistor 131 is a device whose resistance varies according to the temperature of the battery cell 110. Therefore, the temperature of the battery cell 110 can be measured by measuring the resistance value of the thermistor 131. Here, the protection circuit in the protection circuit module 120 may operate or the capacity of the battery cell 110 may be predicted according to the measured temperature of the battery cell 110.
또한, 상기 써미스터(131)는 칩 타입 형태이므로 상기 회로 기판(121)에 실장되어 보호 회로 모듈(120)의 크기를 줄일 수 있다. 한편, 회로 기판(121) 상에 실장된 써미스터(131)는 배터리 셀(110)의 온도뿐만 아니라, 상기 회로 기판(121)에 실장된 다른 회로 소자들에서 발생되는 열에 의해 영향을 받게 된다. 그러나, 본 발명에서는 상기 써미스터(131)를 회로 기판(121)으로부터 일부분이 이격된 격리 영역(130)에 형성함으로써, 이에 대한 영향을 최소화 하여 배터리 셀(110)의 온도를 정확하게 감지할 수 있다. 더불어, 상기 써미스터(131)는 상기 격리 영역(130)에서 상기 회로 기판(121)과 연결된 일단의 반대편인 타단에 형성되어, 회로 기판(121)에 형성된 다른 회로 소자들에서 발생되는 열에 의한 영향을 최소화할 수 있다. In addition, since the thermistor 131 is a chip type, it can be mounted on the circuit board 121 to reduce the size of the protection circuit module 120. The thermistor 131 mounted on the circuit board 121 is influenced not only by the temperature of the battery cell 110 but also by heat generated in other circuit elements mounted on the circuit board 121. However, in the present invention, by forming the thermistor 131 in the isolation region 130, which is partially separated from the circuit board 121, the influence on the thermistor 131 can be minimized and the temperature of the battery cell 110 can be accurately detected. In addition, the thermistor 131 is formed at the other end opposite to the one end connected to the circuit board 121 in the isolation region 130, and the influence of heat generated in other circuit elements formed in the circuit board 121 Can be minimized.
도 4a 및 도 4b는 본 발명의 다른 실시예에 따른 격리 영역을 도시한 평면도이다. 4A and 4B are plan views showing an isolation region according to another embodiment of the present invention.
도 4a 및 도 4b를 참조하면, 상기 보호 회로 모듈(120)은 회로 기판(121)과 상기 회로 기판(121)에 형성된 다수의 소자들을 포함한다. 또한, 상기 보호 회로 모듈(120)의 일측에는 격리 영역(230)이 형성된다. 상기 회로 기판(121)은 대략 평평한 직사각형의 플레이트로 형성되며, 한 쌍의 장변(121a)과 상기 한 쌍의 장변(121a)을 연결하는 한 쌍의 단변(121b)을 포함한다. 여기서, 한 쌍의 장변(121a)은 상기 회로 기판(121)에서 상대적으로 길이가 더 길게 형성된 변을 말한다. Referring to FIGS. 4A and 4B, the protection circuit module 120 includes a circuit board 121 and a plurality of elements formed on the circuit board 121. An isolation region 230 is formed on one side of the protection circuit module 120. The circuit board 121 is formed of a substantially flat rectangular plate and includes a pair of long sides 121a and a pair of short sides 121b connecting the pair of long sides 121a. Here, the pair of long sides 121a refers to a side of the circuit board 121 that has a relatively longer length.
상기 격리 영역(230)은 상기 회로 기판(121)으로부터 일정 간격 이격되되, 일단은 상기 회로 기판(121)과 연결되어 회로 기판(121)으로부터 완전히 분리되지 않는다. 따라서, 상기 격리 영역(230)의 일부와 회로 기판(121) 사이에는 이격된 공간(S)이 존재한다. 상기 격리 영역(230)은 상기 회로 기판(121)의 일단, 즉, 한 쌍의 단변(121b) 중 어느 하나와 인접한 부분에 형성된다. 구체적으로, 상기 격리 영역(230)은 상기 회로 기판(121)과 연결되며 한 쌍의 단변(121b)과 평행하게 형성된 연결부(230a) 및 상기 연결부(230a)로부터 절곡되어 상기 한 쌍의 장변(121a)과 평행하게 형성된 절곡부(230b)를 포함한다. 즉, 상기 격리 영역(230)은 상기 회로 기판(121)의 모서리 부근에 형성되며, 대략 ‘ㄱ’자를 시계 방향으로 90도 회전한 형태로 형성된다. 또한, 상기 격리 영역(230)은 회로 기판(121)의 외측으로 돌출되지 않고 상기 회로 기판(121)의 내측에 형성되므로, 배터리 팩(100)의 크기를 기존보다 확장시키지 않는 범위 내에서 형성된다.The isolation region 230 is spaced apart from the circuit board 121 by a predetermined distance and one end of the isolation region 230 is connected to the circuit board 121 and is not completely separated from the circuit board 121. Therefore, a space S is present between the part of the isolation region 230 and the circuit board 121. The isolation region 230 is formed at one end of the circuit board 121, that is, at a portion adjacent to one of the pair of short sides 121b. More specifically, the isolation region 230 includes a connection portion 230a connected to the circuit board 121 and formed in parallel with the pair of short sides 121b, and a connection portion 230b bent from the connection portion 230a, And a bent portion 230b formed in parallel with the base portion 230a. That is, the isolation region 230 is formed in the vicinity of the edge of the circuit board 121, and is formed by rotating the 'A' character clockwise by 90 degrees. Since the isolation region 230 is formed on the inside of the circuit board 121 without protruding outside the circuit board 121, the isolation region 230 is formed within a range that does not enlarge the size of the battery pack 100 .
더불어, 상기 절곡부(230b)에는 배터리 셀(110)의 온도를 감지하는 온도 센서(231)가 형성된다. 예를 들어, 상기 온도 센서(231)는 칩 타입의 써미스터(thermistor)로 형성될 수 있다. 상기 써미스터(231)는 배터리 셀(110)의 온도에 따라 저항값이 변화하는 소자이다. 따라서, 상기 써미스터(231)의 저항값을 측정하여 배터리 셀(110)의 온도를 측정할 수 있다. 여기서, 측정된 배터리 셀(110)의 온도에 따라, 보호 회로 모듈(120) 내의 보호 회로가 동작하거나 배터리 셀(110)의 용량을 예측할 수 있다. In addition, a temperature sensor 231 for sensing the temperature of the battery cell 110 is formed in the bent portion 230b. For example, the temperature sensor 231 may be formed of a chip type thermistor. The thermistor 231 is a device whose resistance varies according to the temperature of the battery cell 110. Therefore, the temperature of the battery cell 110 can be measured by measuring the resistance value of the thermistor 231. Here, the protection circuit in the protection circuit module 120 may operate or the capacity of the battery cell 110 may be predicted according to the measured temperature of the battery cell 110.
또한, 상기 써미스터(231)는 칩 타입 형태이므로 상기 회로 기판(121)에 실장되어 보호 회로 모듈(120)의 크기를 줄일 수 있다. 한편, 회로 기판(121) 상에 실장된 써미스터(231)는 배터리 셀(110)의 온도뿐만 아니라, 상기 회로 기판(121)에 실장된 다른 회로 소자들에서 발생되는 열에 의해 영향을 받게 된다. 그러나, 본 발명에서는 상기 써미스터(231)를 회로 기판(121)으로부터 일부분이 이격된 격리 영역(230)에 형성함으로써, 이에 대한 영향을 최소화 하여 배터리 셀(110)의 온도를 정확하게 감지할 수 있다. 특히, 상기 써미스터(231)는 상기 격리 영역(230) 중에서 상기 회로 기판(121)으로부터 가장 멀리 떨어진 절곡부(230b)에 형성되어, 회로 기판(121)에 형성된 다른 회로 소자들에서 발생되는 열에 의한 영향을 최소화할 수 있다.In addition, the thermistor 231 may be mounted on the circuit board 121 to reduce the size of the protection circuit module 120 because the thermistor 231 is of a chip type. On the other hand, the thermistor 231 mounted on the circuit board 121 is influenced not only by the temperature of the battery cell 110 but also by heat generated in other circuit elements mounted on the circuit board 121. However, in the present invention, the thermistor 231 is formed in the isolation region 230, which is partially separated from the circuit board 121, so that the influence on the thermistor 231 can be minimized and the temperature of the battery cell 110 can be accurately sensed. Particularly, the thermistor 231 is formed in the bent portion 230b farthest from the circuit board 121 in the isolation region 230 and is formed by heat generated in other circuit elements formed on the circuit board 121 The influence can be minimized.
도 5a 및 도 5b는 본 발명의 또 다른 실시예에 따른 격리 영역을 도시한 평면도이다. 5A and 5B are plan views illustrating an isolation region according to another embodiment of the present invention.
도 5a 및 도 5b를 참조하면, 상기 보호 회로 모듈(120)은 회로 기판(121)과 상기 회로 기판(121)에 형성된 다수의 소자들을 포함한다. 또한, 상기 보호 회로 모듈(120)의 일측에는 격리 영역(330)이 형성된다. 상기 회로 기판(121)은 대략 평평한 직사각형의 플레이트로 형성되며, 한 쌍의 장변(121a)과 상기 한 쌍의 장변(121a)을 연결하는 한 쌍의 단변(121b)을 포함한다. 여기서, 한 쌍의 장변(121a)은 상기 회로 기판(121)에서 상대적으로 길이가 더 길게 형성된 변을 말한다.Referring to FIGS. 5A and 5B, the protection circuit module 120 includes a circuit board 121 and a plurality of elements formed on the circuit board 121. In addition, an isolation region 330 is formed on one side of the protection circuit module 120. The circuit board 121 is formed of a substantially flat rectangular plate and includes a pair of long sides 121a and a pair of short sides 121b connecting the pair of long sides 121a. Here, the pair of long sides 121a refers to a side of the circuit board 121 that has a relatively longer length.
상기 격리 영역(330)은 상기 회로 기판(121)으로부터 일정 간격 이격되되, 일단은 상기 회로 기판(121)과 연결되어 회로 기판(121)으로부터 완전히 분리되지 않는다. 따라서, 상기 격리 영역(330)의 일부와 회로 기판(121) 사이에는 이격된 공간(S)이 존재한다. 상기 격리 영역(330)은 상기 회로 기판(121)의 일단, 즉, 한 쌍의 단변(121b) 중 어느 하나와 인접한 부분에 형성된다. 구체적으로, 상기 격리 영역(330)은 상기 회로 기판(121)과 연결되며 한 쌍의 장변(121a)과 평행한 연결부(330a), 상기 연결부(330a)로부터 절곡되어 한 쌍의 단변(121b)과 평행하게 형성된 제1절곡부(330b), 상기 제1절곡부(330b)로부터 절곡되어 한 쌍의 장변(121a)과 평행하게 형성된 제2절곡부(330c), 상기 제2절곡부(330c)로부터 절곡되어 한 쌍의 단변(121b)과 평행하게 형성된 제3절곡부(330d) 및 상기 제3절곡부(330d)로부터 절곡되어 한 쌍의 장변(121a)과 평행하게 형성된 제4절곡부(330e)를 포함한다. 즉, 상기 격리 영역(330)은 적어도 하나 이상의 절곡부를 갖도록 대략 ‘ㄹ’자 형태와 유사하게 형성된다. The isolation region 330 is spaced apart from the circuit board 121 by a predetermined distance and one end of the isolation region 330 is connected to the circuit board 121 and is not completely separated from the circuit board 121. Therefore, a spaced space S exists between a part of the isolation region 330 and the circuit board 121. The isolation region 330 is formed at one end of the circuit board 121, that is, at a portion adjacent to one of the pair of short sides 121b. More specifically, the isolation region 330 includes a connection portion 330a connected to the circuit board 121 and parallel to the pair of long sides 121a, a pair of short sides 121b bent from the connection portion 330a, A second bent portion 330c bent in parallel with the pair of long sides 121a from the first bent portion 330b and a second bent portion 330b formed in parallel with the first bent portion 330b, A third bent portion 330d bent in a direction parallel to the pair of short sides 121b and a fourth bent portion 330e bent from the third bent portion 330d and formed parallel to the pair of long sides 121a, . That is, the isolation region 330 is formed so as to have at least one bent portion, which is substantially similar to an 'd' shape.
더불어, 상기 제4절곡부(330e)는 회로 기판(121)의 내측을 향해 절곡되어 상기 제2절곡부(330c)와 마주보는 형태로 형성된다. 따라서, 상기 격리 영역(330)은 회로 기판(121)의 외측으로 돌출되지 않고 상기 회로 기판(121)의 내측에 형성되므로, 배터리 팩(100)의 크기를 기존보다 확장시키지 않는 범위 내에서 형성된다. 또한, 상기 제4절곡부(330e)에는 배터리 셀(110)의 온도를 감지하는 온도 센서(331)가 형성된다. 예를 들어, 상기 온도 센서(331)는 칩 타입의 써미스터(thermistor)로 형성될 수 있다. 상기 써미스터(331)는 배터리 셀(110)의 온도에 따라 저항값이 변화하는 소자이다. 따라서, 상기 써미스터(331)의 저항값을 측정하여 배터리 셀(110)의 온도를 측정할 수 있다. 여기서, 측정된 배터리 셀(110)의 온도에 따라, 보호 회로 모듈(120) 내의 보호 회로가 동작하거나 배터리 셀(110)의 용량을 예측할 수 있다. In addition, the fourth bent portion 330e is bent toward the inside of the circuit board 121 and is formed to face the second bent portion 330c. Therefore, since the isolation region 330 is formed on the inner side of the circuit board 121 without protruding outside the circuit board 121, the isolation region 330 is formed within a range that does not enlarge the size of the battery pack 100 . A temperature sensor 331 for sensing the temperature of the battery cell 110 is formed on the fourth bent portion 330e. For example, the temperature sensor 331 may be formed of a chip type thermistor. The thermistor 331 is a device whose resistance varies according to the temperature of the battery cell 110. Therefore, the temperature of the battery cell 110 can be measured by measuring the resistance value of the thermistor 331. Here, the protection circuit in the protection circuit module 120 may operate or the capacity of the battery cell 110 may be predicted according to the measured temperature of the battery cell 110.
또한, 상기 써미스터(331)는 칩 타입 형태이므로 상기 회로 기판(121)에 실장되어 보호 회로 모듈(120)의 크기를 줄일 수 있다. 한편, 회로 기판(121) 상에 실장된 써미스터(331)는 배터리 셀(110)의 온도뿐만 아니라, 상기 회로 기판(121)에 실장된 다른 회로 소자들에서 발생되는 열에 의해 영향을 받게 된다. 그러나, 본 발명에서는 상기 써미스터(331)를 회로 기판(121)으로부터 일부분이 이격된 격리 영역(330)에 형성함으로써, 이에 대한 영향을 최소화 하여 배터리 셀(110)의 온도를 정확하게 감지할 수 있다. 특히, 상기 써미스터(331)는 상기 격리 영역(330) 중에서 상기 회로 기판(121)으로부터 가장 멀리 떨어진 제4절곡부(330e)에 형성되어, 회로 기판(121)에 형성된 다른 회로 소자들에서 발생되는 열에 의한 영향을 최소화할 수 있다.Since the thermistor 331 is of a chip type, it can be mounted on the circuit board 121 to reduce the size of the protection circuit module 120. The thermistor 331 mounted on the circuit board 121 is influenced not only by the temperature of the battery cell 110 but also by heat generated in other circuit elements mounted on the circuit board 121. However, in the present invention, the thermistor 331 is formed in the isolation region 330, which is partially separated from the circuit board 121, so that the influence thereof is minimized, and the temperature of the battery cell 110 can be accurately detected. Particularly, the thermistor 331 is formed in the fourth bent portion 330e farthest from the circuit board 121 in the isolation region 330 and is formed in other circuit elements formed on the circuit board 121 The influence by the heat can be minimized.
이상에서 설명한 것은 본 발명에 의한 배터리 팩을 실시하기 위한 하나의 실시예에 불과한 것으로서, 본 발명은 상기한 실시예에 한정되지 않고, 이하의 특허청구범위에서 청구하는 바와 같이 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능한 범위까지 본 발명의 기술적 정신이 있다고 할 것이다.It is to be understood that the present invention is not limited to the above-described embodiment, but may be modified in various ways within the scope of the present invention as set forth in the claims below It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (10)

  1. 배터리 셀; 및A battery cell; And
    상기 배터리 셀과 전기적으로 연결되며, 상기 배터리 셀의 온도를 측정하는 온도 센서가 실장된 회로 기판을 갖는 보호 회로 모듈;을 포함하고,And a protection circuit module electrically connected to the battery cell and having a circuit board on which a temperature sensor for measuring a temperature of the battery cell is mounted,
    상기 회로 기판의 일측에는 일부분이 상기 회로 기판으로부터 이격된 격리 영역이 형성되고, 상기 격리 영역에는 상기 온도 센서가 실장된 것을 특징으로 하는 배터리 팩.Wherein an isolation region is formed on one side of the circuit board, the isolation region being partially separated from the circuit board, and the temperature sensor is mounted on the isolation region.
  2. 제 1 항에 있어서,The method according to claim 1,
    상기 격리 영역은 상기 회로 기판의 내측에 형성된 것을 특징으로 하는 배터리 팩.Wherein the insulating region is formed inside the circuit board.
  3. 제 1 항에 있어서,The method according to claim 1,
    상기 회로 기판은 직사각형 형태로 형성되며,The circuit board is formed in a rectangular shape,
    한 쌍의 장변과, 상기 한 쌍의 장변을 연결하며 상기 한 쌍의 장변의 길이보다 짧은 한 쌍의 단변을 포함하는 것을 특징으로 하는 배터리 팩.And a pair of short sides connecting the pair of long sides and shorter than a length of the pair of long sides connecting the pair of long sides.
  4. 제 3 항에 있어서,The method of claim 3,
    상기 격리 영역은 상기 한 쌍의 장변 중 어느 하나로부터 상기 회로 기판의 내측을 향해 일정 너비를 가지며, 상기 장변과 평행하게 형성된 것을 특징으로 하는 배터리 팩.Wherein the isolation region is formed to be parallel to the long side of the circuit board from the one of the pair of long sides toward the inside of the circuit board.
  5. 제 3 항에 있어서,The method of claim 3,
    상기 격리 영역은 상기 한 쌍의 단변 중 어느 하나로부터 상기 회로 기판의 내측을 향해 형성된 것을 특징으로 하는 배터리 팩.Wherein the insulated area is formed from one of the pair of short sides toward the inside of the circuit board.
  6. 제 5 항에 있어서,6. The method of claim 5,
    상기 격리 영역은 The isolation region
    상기 회로 기판과 연결되며 상기 한 쌍의 단변과 평행한 연결부와,A connecting portion connected to the circuit board and parallel to the pair of short sides,
    상기 연결부로부터 절곡되며 상기 한 쌍의 장변과 평행한 절곡부를 포함하는 것을 특징으로 하는 배터리 팩.And a bent portion bent from the connection portion and being parallel to the pair of long sides.
  7. 제 6 항에 있어서,The method according to claim 6,
    상기 온도 센서는 상기 절곡부에 형성된 것을 특징으로 하는 배터리 팩.And the temperature sensor is formed on the bent portion.
  8. 제 5 항에 있어서,6. The method of claim 5,
    상기 격리 영역은 The isolation region
    상기 회로 기판과 연결되며 상기 한 쌍의 장변과 평행한 연결부와,A connection part connected to the circuit board and parallel to the pair of long sides,
    상기 연결부로부터 절곡되며 상기 한 쌍의 단변과 평행한 제1절곡부와,A first bent portion bent from the connection portion and parallel to the pair of short sides,
    상기 제1절곡부로부터 절곡되며 상기 한 쌍의 장변과 평행한 제2절곡부와,A second bent portion bent from the first bent portion and parallel to the pair of long sides,
    상기 제2절곡부로부터 절곡되며 상기 한 쌍의 단변과 평행한 제3절곡부와,A third bent portion bent from the second bent portion and parallel to the pair of short sides,
    상기 제3절곡부로부터 절곡되며 상기 한 쌍의 장변과 평행한 제4절곡부를 포함하는 것을 특징으로 하는 배터리 팩.And a fourth bent portion bent from the third bent portion and parallel to the pair of long sides.
  9. 제 8 항에 있어서,9. The method of claim 8,
    상기 제4절곡부는 상기 제2절곡부와 마주보며,The fourth bent portion facing the second bent portion,
    상기 온도 센서는 상기 제4절곡부에 형성된 것을 특징으로 하는 배터리 팩.Wherein the temperature sensor is formed on the fourth bent portion.
  10. 제 1 항에 있어서,The method according to claim 1,
    상기 온도 센서는 칩 타입의 써미스터인 것을 특징으로 하는 배터리 팩.Wherein the temperature sensor is a chip-type thermistor.
PCT/KR2018/004011 2017-07-20 2018-04-05 Battery pack WO2019017566A1 (en)

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KR20230116599A (en) * 2022-01-28 2023-08-04 주식회사 엘지에너지솔루션 Printed circuit board for battery pack capable of measuring temperature and manufacturing method therefor
KR20240015306A (en) * 2022-07-27 2024-02-05 주식회사 엘지에너지솔루션 Battery Assembly Comprising Thermistor and Method for Manufacturing the Same

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JP2009040314A (en) * 2007-08-10 2009-02-26 Denso Corp Vehicle system
US20120148876A1 (en) * 2010-12-08 2012-06-14 Zhiliang Zeng Battery module
KR101431720B1 (en) * 2011-12-13 2014-08-22 주식회사 엘지화학 Switching Board of Novel Structure, and Battery Module Containing the Same
KR20160134324A (en) * 2015-05-15 2016-11-23 삼성에스디아이 주식회사 Rechargeable battery
KR20170024309A (en) * 2015-08-25 2017-03-07 엘지전자 주식회사 Electronic device

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JP2009040314A (en) * 2007-08-10 2009-02-26 Denso Corp Vehicle system
US20120148876A1 (en) * 2010-12-08 2012-06-14 Zhiliang Zeng Battery module
KR101431720B1 (en) * 2011-12-13 2014-08-22 주식회사 엘지화학 Switching Board of Novel Structure, and Battery Module Containing the Same
KR20160134324A (en) * 2015-05-15 2016-11-23 삼성에스디아이 주식회사 Rechargeable battery
KR20170024309A (en) * 2015-08-25 2017-03-07 엘지전자 주식회사 Electronic device

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