WO2016003038A1 - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
WO2016003038A1
WO2016003038A1 PCT/KR2015/001188 KR2015001188W WO2016003038A1 WO 2016003038 A1 WO2016003038 A1 WO 2016003038A1 KR 2015001188 W KR2015001188 W KR 2015001188W WO 2016003038 A1 WO2016003038 A1 WO 2016003038A1
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WO
WIPO (PCT)
Prior art keywords
battery pack
bare cell
insulating body
circuit board
coupling plate
Prior art date
Application number
PCT/KR2015/001188
Other languages
French (fr)
Korean (ko)
Inventor
정춘길
Original Assignee
주식회사 한림포스텍
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Publication date
Application filed by 주식회사 한림포스텍 filed Critical 주식회사 한림포스텍
Publication of WO2016003038A1 publication Critical patent/WO2016003038A1/en

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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
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • 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
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • 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
    • 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
    • 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
    • H01M50/543—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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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 having a structure capable of implementing an improved assembly method.
  • a battery pack is a rechargeable battery and is widely used in the field of electronic devices such as mobile phones, notebook computers, camcorders, and the like.
  • the battery pack despite its small size, is made of many parts combined. Even if the parts are small, several steps are required to assemble each one.
  • the bare cell for realizing the above object, the bare cell; A protection circuit board connected to the bare cell to control charge and discharge of the bare cell; A coupling plate disposed between the bare cell and the protective circuit board and having an insulating body supporting the protective circuit board and a welding member connected to the insulating body and welded to the bare cell; And a protective cap disposed to surround the protective circuit board and the coupling plate.
  • the coupling plate may be formed by insert injection of a polymer resin forming the insulating body and a metal material forming the welding member.
  • the metal material may include any one of nickel and nickel-aluminum cladding.
  • the welding member the bottom portion which is a portion to be welded to the bare cell; And a sidewall portion extending in the direction crossing from the bottom portion.
  • the side wall portion may be perpendicular to the bottom portion.
  • the welding member may further include a wing portion extending in a direction away from the side wall portion to the bottom portion.
  • the wing portion may be parallel to the bottom portion.
  • the side wall portion may be formed in a pair connected to both ends of the bottom portion, and the wing portion may be formed in a pair coupled to a free end of each of the pair of side wall portions.
  • the insulating body may include an open part including an exposed part exposing the bottom part and a step part supporting the side wall part and the wing part.
  • the wing portion may include a penetration hole through which a portion of the insulating body penetrates.
  • the penetration hole may be formed in plurality in the width direction of the wing portion.
  • the coupling plate may further include a fastening protrusion
  • the protective cap may include a fastening groove into which the fastening protrusion is inserted and fastened.
  • the battery pack according to the present invention configured as described above, it is possible to improve the productivity decrease due to manpower and standby time in the assembly process.
  • FIG. 1 is an exploded perspective view of a battery pack 100 according to an embodiment of the present invention.
  • FIG. 2 is a perspective view of the coupling plate 130 of FIG.
  • FIG. 3 is a cross-sectional view taken along the line III-III of the coupling plate 130 of FIG.
  • FIG. 4 is a conceptual cross-sectional view showing a coupling plate 130 ′ according to another embodiment of the present invention.
  • FIG. 1 is an exploded perspective view showing a battery pack 100 according to an embodiment of the present invention.
  • the battery pack 100 has a bare cell 110, a protective circuit board 120, a coupling plate 130, protective caps 150 and 160, and a label 170. Can be.
  • the bare cell 110 has a generally hexahedral shape.
  • the bare cell 110 may include a can 111 forming an appearance and an electrode assembly accommodated in the can 111.
  • the can 111 may be formed to extend generally in a track-shaped cross section. Thereby, the main surface 113 of the can 111 forms a rectangle, and the side surfaces 115 of both ends along the extending direction of the can 111 form a track shape.
  • the electrode assembly accommodated in the inner space of the can 111 may largely include a positive electrode plate and a negative electrode plate.
  • a separator is interposed between the positive electrode plate and the negative electrode plate.
  • the electrode assembly is sealed in the inner space while being impregnated with the electrolyte.
  • the electrode assembly may have a form in which the laminate of the positive electrode plate, the negative electrode plate, and the separator is wound in a jelly roll form.
  • the top of the can 111 is closed after the electrode assembly is received in the inner space.
  • the positive electrode tab connected to the positive electrode plate is connected to the positive electrode terminal 118 of the can 111, and the negative electrode tab connected to the negative electrode plate is connected to the negative electrode terminal 117 exposed to the outside of the can 111.
  • the protection circuit board 120 may include a control circuit for controlling charging and discharging of the electrode assembly.
  • the control circuit may include a protection circuit for protecting the bare cell 110 from abnormal operation during operation of the bare cell 110.
  • the protection circuit may include a PTC device connected to the positive electrode terminal 118 to prevent overcharge, overcurrent, overdischarge, and the like of the bare cell 110.
  • the PTC element forms a charge / discharge current path between the control circuit (protection circuit) and the bare cell 110, and serves to forcibly reduce the current when the charge / discharge current is out of the set point.
  • the PTC device may be integrated into the welding member 135 to be described later.
  • the protective circuit board 120 may include an electrode tab 125 connected to the board 121.
  • the electrode tab 125 is connected to the negative terminal 117 to allow the control circuit to be electrically connected to the electrode assembly.
  • An output terminal 123 may be provided on an outer surface of the board 121. The output terminal 123 is electrically connected to the electrode assembly, and an external device may charge or receive power from the electrode assembly through the output terminal 123.
  • the coupling plate 130 is disposed between the bare cell 110 and the protection circuit board 120. Specifically, the coupling plate 130 may be coupled to the side 115 of the bare cell 110. The coupling plate 130 serves to mediate the protection circuit board 120 to the bare cell 110.
  • the protective circuit board 120 may be formed to have a smaller size than the coupling plate 130 so that both end regions of the coupling plate 130 may be exposed.
  • the coupling plate 130 may have a fastening protrusion 138 protruding from the side thereof.
  • the protective caps 150 and 160 are configured to close both sides of the bare cell 110.
  • the protective caps 150 and 160 may include an upper protective cap 150 surrounding the protective circuit board 120 and the coupling plate 130, and a lower protective cap 160 positioned on an opposite side of the upper protective cap 150.
  • Can have The protective caps 150 and 160 may be injection molded of resin.
  • the upper protective cap 150 is provided with a terminal hole 151 for exposing the output terminal 123 to the outside.
  • the label 170 is a sheet that is formed to cover the bare cells 110 and the protective caps 150 and 160 so as to cover them. Since the label 170 surrounds the bare cell 110 and the protective caps 150 and 160, the bare cell 110 and the protective caps 150 and 160 are coupled to each other in a more intimate state.
  • the name tag 175 is attached to a portion of the label 170. In the name tag 175, product information of the battery pack 100 is described.
  • FIG. 2 is a perspective view of the coupling plate 130 of FIG.
  • the coupling plate 130 may have an insulating body 131 and a welding member 135 (FIG. 3).
  • the insulating body 131 is generally formed of a track-shaped plate.
  • the insulating body 131 has an insulating property as a resin material, and supports the protective circuit board 120.
  • Connection regions 132 and 133 may be formed in the insulating body 131.
  • the first connection region 132 provides a space for the electrode tab 125 (FIG. 1) to be connected to the negative terminal 117 (FIG. 1).
  • the welding member 135 in which the PTC element is embedded is positioned in the second connection region 132.
  • the welding member 135 is connected to the insulating body 131 and is configured to be welded to the bare cell 110.
  • the welding member 135 may be formed of a metal material.
  • the metal material any one of nickel and nickel-aluminum clad may be used.
  • the PTC element may be located inside the welding member 135 as described above.
  • the welding member 135 may have an arrangement structure such as metal material-PCT element-metal material.
  • the metal constituting the welding member 135 and the resin constituting the insulating body 131 may be integrated with an insert injection method.
  • FIG. 3 is a cross-sectional view taken along the line III-III of the coupling plate 130 of FIG. 2.
  • the welding member 135 may have a bottom portion 135a, a sidewall portion 135b, and a wing portion 135c.
  • the bottom part 135a is a part to be welded to the bare cell 110. Accordingly, the bottom portion 135a may be disposed substantially parallel to the side surface 115 of the bare cell 110. To this end, the bottom portion 135a is also substantially parallel to the insulating body 131.
  • the side wall portion 135b may be disposed along a direction crossing the bottom portion 135a, for example, a vertical direction.
  • the wing 135c may extend in a direction away from the bottom 135a at the free end side of the side wall 135b. In this case, the wing 135c may be substantially parallel to the bottom 135a.
  • the wing part 135c may have a penetration hole 135d penetrating in the molten state when the insulating body 131 is injected as a resin.
  • the penetration hole 135d may be formed in plural along the width direction of the wing 135c.
  • the plurality of penetration holes 135d may be arranged to form one row as shown.
  • the welding member 135 has a form in which sidewall portions 135b are connected to both ends of the bottom portion 135a, and wing portions 135c are also connected to each sidewall portion 135b. Can be.
  • the side wall portion 135b and the wing portion 135c on both sides with respect to the center of the bottom portion 135a may have a structure that is symmetrical with each other.
  • the insulating body 131 may have an opening.
  • the open part may have an exposed part 131a exposing the bottom part 135a and a stepped step part 131b supporting the side wall part 135b and the wing part 135c.
  • the bottom portion 135a is firmly fixed to the bare cell 110 by spot welding or the like on the side surface 115 of the bare cell 110.
  • spot welding may be performed for one point or multiple points more than this point.
  • the side wall portion 135b serves to resist the force T causing the coupling plate 130 to swing left and right by the torsional moment applied to the protective cap 150.
  • the resistance to the force T swinging from side to side is secondarily also achieved by the bottom portion 135a.
  • the wing 135c serves to resist the force U to cause the coupling plate 130 to fall away from the sidewall portion 135b of the bare cell 110. Resistance to this force U can also be achieved, secondly, by the side wall portion 135b.
  • the configuration associated with the upper penetration hole 135d may also enhance resistance to the force T swinging to the left and right of the wing 135c.
  • FIG. 4 is a conceptual cross-sectional view showing a coupling plate 130 ′ according to another embodiment of the present invention.
  • the welding members 135 are provided in pairs 136 ′ and 137 ′ in this embodiment, as compared to the one welding member 135 in the previous embodiment. Thereby, if the first welding member 136 'is positioned at one end side of the insulating body 131', the second welding member 137 'is positioned at the other end side of the insulating body 131'. It may be.
  • the first welding member 136 ′ serves to fix the coupling plate 130 ′ to the bare cell 110, and to connect the positive terminal 118 and the protection circuit board 120 of the bare cell 110. It acts as a medium for connecting electrically.
  • the second welding member 137 ′ may be used only for the role of allowing the coupling plate 130 ′ to be fixed to the bare cell 110.
  • Such a battery pack is not limited to the configuration and operation of the embodiments described above.
  • the above embodiments may be configured such that various modifications may be made by selectively combining all or part of the embodiments.

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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)
  • Battery Mounting, Suspending (AREA)

Abstract

The present invention provides a battery pack comprising: a bare cell; a protection circuit board connected to the bare cell so as to control the charging and discharging of the bare cell; a coupling plate including an insulating body disposed between the bare cell and the protection circuit board so as to support the protection circuit board, and a welding member connected to the insulating body and welded to the bare cell; and a protective cap disposed so as to cover the protection circuit board and the coupling plate.

Description

배터리팩Battery pack
본 발명은 개선된 조립 방식을 구현할 수 있는 구조의 배터리팩에 관한 것이다.The present invention relates to a battery pack having a structure capable of implementing an improved assembly method.
일반적으로, 배터리팩(battery pack)은 충전 가능한 전지로서, 핸드폰, 노트북 컴퓨터, 캠코더 등의 전자 기기 분야에서 널리 사용되고 있다.In general, a battery pack is a rechargeable battery and is widely used in the field of electronic devices such as mobile phones, notebook computers, camcorders, and the like.
배터리팩은 작은 사이즈에도 불구하고, 많은 부품이 결합되어 만들어진다. 부품이 작다 할지라도 각 부품 하나하나를 조립하기 위해서는, 여러 단계의 공정이 필요하다. The battery pack, despite its small size, is made of many parts combined. Even if the parts are small, several steps are required to assemble each one.
예를 들어, 하나의 부품을 다른 부품에 본딩하기 위해서는, 위 하나의 부품에 본드를 바르고 일정 시간이 경과하고서 위 다른 부품을 압착해야 한다. 여기서, 본드를 바르는 것은 사람에 의해 이루어져 생산성이 낮고, 또한 대기 시간에 의해서도 생산성 향상에 한계가 있는 문제가 있다. For example, in order to bond one part to another, one part must be bonded and the other part pressed after a period of time. Here, there is a problem that the application of the bond is made by a person, and the productivity is low, and the productivity is limited by the waiting time.
본 발명의 목적은, 조립 과정에서 인력 및 대기 시간에 의한 생산성 저하를 개선할 수 있게 하는, 배터리팩을 제공하는 것이다.It is an object of the present invention to provide a battery pack, which makes it possible to improve productivity decrease due to manpower and standby time in the assembly process.
상기한 과제를 실현하기 위한 본 발명의 일 측면과 관련된 배터리팩은, 베어셀; 상기 베어셀에 연결되어, 상기 베어셀의 충방전을 제어하는 보호회로기판; 상기 베어셀과 상기 보호회로기판 사이에 배치되어 상기 보호회로기판을 지지하는 절연성 몸체와, 상기 절연성 몸체에 연결되며 상기 베어셀에 용접되는 용접 부재를 구비하는 결합 플레이트; 및 상기 보호회로기판과 상기 결합 플레이트를 감싸도록 배치되는 보호 캡을 포함할 수 있다. Battery pack according to an aspect of the present invention for realizing the above object, the bare cell; A protection circuit board connected to the bare cell to control charge and discharge of the bare cell; A coupling plate disposed between the bare cell and the protective circuit board and having an insulating body supporting the protective circuit board and a welding member connected to the insulating body and welded to the bare cell; And a protective cap disposed to surround the protective circuit board and the coupling plate.
여기서, 상기 결합 플레이트는, 상기 절연성 몸체를 형성하는 고분자 수지와 상기 용접 부재를 이루는 금속재가 인서트 사출되어 형성될 수 있다.Here, the coupling plate may be formed by insert injection of a polymer resin forming the insulating body and a metal material forming the welding member.
여기서, 상기 금속재는, 니켈과, 니켈-알루미늄 클래드 중 어느 하나를 포함할 수 있다.Here, the metal material may include any one of nickel and nickel-aluminum cladding.
여기서, 상기 용접 부재는, 상기 베어셀에 대해 용접되는 부분인 바닥부; 및 상기 바닥부에서 그에 대해 교차하는 방향으로 연장된 측벽부를 포함할 수 있다.Here, the welding member, the bottom portion which is a portion to be welded to the bare cell; And a sidewall portion extending in the direction crossing from the bottom portion.
여기서, 상기 측벽부는, 상기 바닥부에 대해 수직할 수 있다.Here, the side wall portion may be perpendicular to the bottom portion.
여기서, 상기 용접 부재는, 상기 측벽부에서 상기 바닥부와 멀어지는 방향으로 연장된 날개부를 더 포함할 수 있다.Here, the welding member may further include a wing portion extending in a direction away from the side wall portion to the bottom portion.
여기서, 상기 날개부는, 상기 바닥부에 대해 평행할 수 있다. Here, the wing portion may be parallel to the bottom portion.
여기서, 상기 측벽부는, 상기 바닥부의 양단부에 연결되는 한 쌍으로 형성되고, 상기 날개부는, 상기 한 쌍의 측벽부 각각의 자유단에 결합되는 한 쌍으로 형성될 수 있다.The side wall portion may be formed in a pair connected to both ends of the bottom portion, and the wing portion may be formed in a pair coupled to a free end of each of the pair of side wall portions.
여기서, 상기 절연성 몸체는, 상기 바닥부를 노출하는 노출부와, 상기 측벽부와 상기 날개부를 지지하는 계단부를 구비하는 개방부를 포함할 수 있다.The insulating body may include an open part including an exposed part exposing the bottom part and a step part supporting the side wall part and the wing part.
여기서, 상기 날개부는, 상기 절연성 몸체의 일부가 침투되는 침투홀을 포함할 수 있다.Here, the wing portion may include a penetration hole through which a portion of the insulating body penetrates.
여기서, 상기 침투홀은, 상기 날개부의 폭 방향을 따라 복수 개로 형성될 수 있다.Here, the penetration hole may be formed in plurality in the width direction of the wing portion.
여기서, 상기 결합 플레이트는, 체결 돌기를 더 포함하고, 상기 보호 캡은, 상기 체결 돌기가 삽입 체결되는 체결 홈을 포함할 수 있다. Here, the coupling plate may further include a fastening protrusion, and the protective cap may include a fastening groove into which the fastening protrusion is inserted and fastened.
상기와 같이 구성되는 본 발명에 관련된 배터리팩에 의하면, 조립 과정에서 인력 및 대기 시간에 의한 생산성 저하를 개선할 수 있게 한다.According to the battery pack according to the present invention configured as described above, it is possible to improve the productivity decrease due to manpower and standby time in the assembly process.
그에 의해, 배터리팩의 조립의 생산성을 극대화하고, 생산 과정에 대한 자동화 정도를 높일 수 있다.Thereby, the productivity of the assembly of the battery pack can be maximized and the degree of automation for the production process can be increased.
도 1은 본 발명의 일 실시예에 따른 배터리팩(100)의 분해 사시도이다.1 is an exploded perspective view of a battery pack 100 according to an embodiment of the present invention.
도 2는 도 1의 결합 플레이트(130)에 대한 사시도이다.2 is a perspective view of the coupling plate 130 of FIG.
도 3은 도 2의 결합 플레이트(130)의 라인(Ⅲ-Ⅲ)을 따라 취한 단면도이다.3 is a cross-sectional view taken along the line III-III of the coupling plate 130 of FIG.
도 4는 본 발명의 다른 실시예에 따른 결합 플레이트(130')를 보인 개념적인 단면도이다.4 is a conceptual cross-sectional view showing a coupling plate 130 ′ according to another embodiment of the present invention.
이하, 본 발명의 바람직한 실시예에 따른 배터리팩에 대하여 첨부한 도면을 참조하여 상세히 설명한다. 본 명세서에서는 서로 다른 실시예라도 동일·유사한 구성에 대해서는 동일·유사한 참조번호를 부여하고, 그 설명은 처음 설명으로 갈음한다.Hereinafter, a battery pack according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, the same or similar reference numerals are assigned to the same or similar configurations in different embodiments, and the description thereof is replaced with the first description.
도 1은 본 발명의 일 실시예에 따른 배터리팩(100)를 보인 분해 사시도이다.1 is an exploded perspective view showing a battery pack 100 according to an embodiment of the present invention.
본 도면을 참조하면, 배터리팩(100)는, 베어셀(110)과, 보호회로기판(120)과, 결합 플레이트(130)와, 보호 캡(150, 160)과, 라벨(170)을 가질 수 있다. Referring to the drawing, the battery pack 100 has a bare cell 110, a protective circuit board 120, a coupling plate 130, protective caps 150 and 160, and a label 170. Can be.
베어셀(110)은 대체로 납작한 육면체의 형상을 가진다. 베어셀(110)은 외관을 형성하는 캔(111)과, 캔(111)의 내부에 수용되는 전극 조립체를 포함할 수 있다. 캔(111)은 대체로 트랙형의 단면으로 연장하여 형성될 수 있다. 그에 의해, 캔(111)의 주면(main surface, 113)은 직사각형을 이루고, 캔(111)의 연장 방향을 따른 양단의 측면(115)은 트랙형을 이루게 된다. The bare cell 110 has a generally hexahedral shape. The bare cell 110 may include a can 111 forming an appearance and an electrode assembly accommodated in the can 111. The can 111 may be formed to extend generally in a track-shaped cross section. Thereby, the main surface 113 of the can 111 forms a rectangle, and the side surfaces 115 of both ends along the extending direction of the can 111 form a track shape.
캔(111)의 내부 공간에 수용되는 전극 조립체는, 크게 양극판과 음극판을 포함할 수 있다. 상기 양극판과 상기 음극판 사이에는 세퍼레이터가 개재된다. 이러한 전극 조립체는 전해질에 함침된 상태로 상기 내부 공간에 밀봉되어 수용된다. 구체적으로, 전극 조립체는, 상기 양극판, 상기 음극판, 및 상기 세퍼레이터의 적층체가 젤리롤 형태로 권취된 형태일 수 있다. 캔(111)의 상단은 상기 전극 조립체가 상기 내부 공간에 수용된 후에 폐쇄된다. 상기 양극판에 연결되는 양극탭은 캔(111)의 양극단자(118)에 접속되고, 상기 음극판에 연결되는 음극탭은 캔(111)의 외부로 노출되는 음극 단자(117)에 접속된다. The electrode assembly accommodated in the inner space of the can 111 may largely include a positive electrode plate and a negative electrode plate. A separator is interposed between the positive electrode plate and the negative electrode plate. The electrode assembly is sealed in the inner space while being impregnated with the electrolyte. Specifically, the electrode assembly may have a form in which the laminate of the positive electrode plate, the negative electrode plate, and the separator is wound in a jelly roll form. The top of the can 111 is closed after the electrode assembly is received in the inner space. The positive electrode tab connected to the positive electrode plate is connected to the positive electrode terminal 118 of the can 111, and the negative electrode tab connected to the negative electrode plate is connected to the negative electrode terminal 117 exposed to the outside of the can 111.
보호회로기판(120)은 상기 전극 조립체의 충방전을 제어하기 위한 제어 회로를 포함할 수 있다. 상기 제어 회로는 베어셀(110)의 작동 중에 베어셀(110)을 이상 작동으로부터 보호하기 위한 보호 회로를 포함할 수 있다. 예를 들어, 상기 보호회로는 양극단자(118)에 접속되는 PTC소자를 포함하여, 베어셀(110)의 과충전, 과전류, 과방전 등을 방지할 수 있다. 여기서, PTC소자는 상기 제어회로(보호회로)와 베어셀(110) 간의 충방전 전류패스를 형성하며, 충방전 전류가 설정된 포인트를 벗어나면 전류를 강제적으로 감소시키는 기능을 한다. 상기 PTC소자는, 후술할 용접 부재(135)에 일체화된 것일 수 있다.The protection circuit board 120 may include a control circuit for controlling charging and discharging of the electrode assembly. The control circuit may include a protection circuit for protecting the bare cell 110 from abnormal operation during operation of the bare cell 110. For example, the protection circuit may include a PTC device connected to the positive electrode terminal 118 to prevent overcharge, overcurrent, overdischarge, and the like of the bare cell 110. Here, the PTC element forms a charge / discharge current path between the control circuit (protection circuit) and the bare cell 110, and serves to forcibly reduce the current when the charge / discharge current is out of the set point. The PTC device may be integrated into the welding member 135 to be described later.
보호회로기판(120)과 상기 전극 조립체 간의 연결을 위하여, 보호회로기판(120)은 보드(121)와 연결되는 전극 탭(125)을 포함할 수 있다. 전극 탭(125)은 음극 단자(117)에 접속되어, 상기 제어 회로가 상기 전극 조립체에 전기적으로 연결되게 한다. 보드(121)의 외면에는 출력 단자(123)가 구비될 수 있다. 출력 단자(123)는 상기 전극 조립체와 전기적으로 연결된 것으로서, 외부 기기는 출력 단자(123)를 통해 상기 전극 조립체를 충전하거나 상기 전극 조립체로부터 전력을 공급받을 수 있다.In order to connect the protective circuit board 120 and the electrode assembly, the protective circuit board 120 may include an electrode tab 125 connected to the board 121. The electrode tab 125 is connected to the negative terminal 117 to allow the control circuit to be electrically connected to the electrode assembly. An output terminal 123 may be provided on an outer surface of the board 121. The output terminal 123 is electrically connected to the electrode assembly, and an external device may charge or receive power from the electrode assembly through the output terminal 123.
결합 플레이트(130)는 베어셀(110)과 보호회로기판(120) 사이에 배치된다. 구체적으로, 결합 플레이트(130)는 베어셀(110)의 측면(115)에 결합될 수 있다. 결합 플레이트(130)는 보호회로기판(120)이 베어셀(110)에 결합되도록 매개하는 역할을 한다. 보호회로기판(120)은 결합 플레이트(130)보다 작은 사이즈로 형성되어, 결합 플레이트(130)의 양측 단부 영역이 노출되게 할 수 있다. 결합 플레이트(130)는, 그의 측면에서 돌출되는 체결 돌기(138)를 가질 수 있다. The coupling plate 130 is disposed between the bare cell 110 and the protection circuit board 120. Specifically, the coupling plate 130 may be coupled to the side 115 of the bare cell 110. The coupling plate 130 serves to mediate the protection circuit board 120 to the bare cell 110. The protective circuit board 120 may be formed to have a smaller size than the coupling plate 130 so that both end regions of the coupling plate 130 may be exposed. The coupling plate 130 may have a fastening protrusion 138 protruding from the side thereof.
보호 캡(150, 160)은 베어셀(110)의 양 측면을 마감하는 구성이다. 보호 캡(150, 160)은, 보호회로기판(120)과 결합 플레이트(130)를 감싸는 상부 보호 캡(150)과, 상부 보호 캡(150)의 반대 측에 위치하는 하부 보호 캡(160)을 가질 수 있다. 보호 캡(150, 160)은 수지로 사출 성형된 것일 수 있다. 상부 보호 캡(150)에는 출력 단자(123)가 외부로 노출되게 하는 단자홀(151)이 구비된다.The protective caps 150 and 160 are configured to close both sides of the bare cell 110. The protective caps 150 and 160 may include an upper protective cap 150 surrounding the protective circuit board 120 and the coupling plate 130, and a lower protective cap 160 positioned on an opposite side of the upper protective cap 150. Can have The protective caps 150 and 160 may be injection molded of resin. The upper protective cap 150 is provided with a terminal hole 151 for exposing the output terminal 123 to the outside.
라벨(170)은 베어셀(110)과 보호 캡(150, 160)이 결합된 상태에서, 그들을 덮어씌우도록 형성되는 시트이다. 라벨(170)이 베어셀(110)과 보호 캡(150, 160)을 감싸므로, 베어셀(110)과 보호 캡(150, 160)이 서로 보다 밀착된 상태로 결합되게 된다. 라벨(170)의 일 부분에는 네임택(175)이 부착된다. 네임택(175)에는 배터리팩(100)의 제품 정보 등이 기재된다.The label 170 is a sheet that is formed to cover the bare cells 110 and the protective caps 150 and 160 so as to cover them. Since the label 170 surrounds the bare cell 110 and the protective caps 150 and 160, the bare cell 110 and the protective caps 150 and 160 are coupled to each other in a more intimate state. The name tag 175 is attached to a portion of the label 170. In the name tag 175, product information of the battery pack 100 is described.
이상의 결합 플레이트(130)에 대해, 도 2 및 도 3을 참조하여 추가로 설명한다.The coupling plate 130 described above will be further described with reference to FIGS. 2 and 3.
먼저, 도 2는 도 1의 결합 플레이트(130)에 대한 사시도이다.First, FIG. 2 is a perspective view of the coupling plate 130 of FIG.
본 도면을 참조하면, 결합 플레이트(130)는, 절연성 몸체(131)와, 용접 부재(135, 도 3)를 가질 수 있다.Referring to this drawing, the coupling plate 130 may have an insulating body 131 and a welding member 135 (FIG. 3).
절연성 몸체(131)는 대체로 트랙형의 판재로 형성된다. 절연성 몸체(131)는 수지 재질로서 절연성을 가지며, 보호회로기판(120)을 지지하게 된다. 절연성 몸체(131)에는 접속 영역(132,133)이 형성될 수 있다. 제1 접속 영역(132)은 전극 탭(125, 도 1)이 음극 단자(117, 도 1)와 접속되게 하는 공간을 제공한다. 이와 달리, 제2 접속 영역(132)에는 PTC소자가 내재된 용접 부재(135)가 위치하게 된다.The insulating body 131 is generally formed of a track-shaped plate. The insulating body 131 has an insulating property as a resin material, and supports the protective circuit board 120. Connection regions 132 and 133 may be formed in the insulating body 131. The first connection region 132 provides a space for the electrode tab 125 (FIG. 1) to be connected to the negative terminal 117 (FIG. 1). In contrast, the welding member 135 in which the PTC element is embedded is positioned in the second connection region 132.
용접 부재(135)는 절연성 몸체(131)에 연결되며, 베어셀(110)에 대해 용접되게 구성된다. 이를 위해, 용접 부재(135)는 금속재로 형성될 수 있다. 금속재로는 니켈과, 니켈-알루미늄 클래드 중 어느 하나가 사용될 수 있다. 여기서, 용접 부재(135)의 내부에는, 앞서 설명한 대로, PTC 소자가 위치할 수 있다. 예를 들어, 용접 부재(135)는 금속재 - PCT 소자 - 금속재와 같은 배치 구조를 가질 수 있다.The welding member 135 is connected to the insulating body 131 and is configured to be welded to the bare cell 110. To this end, the welding member 135 may be formed of a metal material. As the metal material, any one of nickel and nickel-aluminum clad may be used. Here, the PTC element may be located inside the welding member 135 as described above. For example, the welding member 135 may have an arrangement structure such as metal material-PCT element-metal material.
용접 부재(135)와 절연성 몸체(131)의 연결을 위해서, 용접 부재(135)를 이루는 금속재와 절연성 몸체(131)를 이루는 수지가 인서트 사출 방식으로 일체화될 수 있다.In order to connect the welding member 135 and the insulating body 131, the metal constituting the welding member 135 and the resin constituting the insulating body 131 may be integrated with an insert injection method.
다음으로, 도 3은 도 2의 결합 플레이트(130)의 라인(Ⅲ-Ⅲ)을 따라 취한 단면도이다.3 is a cross-sectional view taken along the line III-III of the coupling plate 130 of FIG. 2.
본 도면을 참조하면, 용접 부재(135)는, 바닥부(135a)와, 측벽부(135b)와, 날개부(135c)를 가질 수 있다.Referring to this drawing, the welding member 135 may have a bottom portion 135a, a sidewall portion 135b, and a wing portion 135c.
바닥부(135a)는 베어셀(110)에 대해 용접이 되는 부분이다. 따라서, 바닥부(135a)는 베어셀(110)의 측면(115)에 대해 대체로 평행하게 배치될 수 있다. 이를 위해, 바닥부(135a)는 절연성 몸체(131)에도 대체로 평행하게 된다. The bottom part 135a is a part to be welded to the bare cell 110. Accordingly, the bottom portion 135a may be disposed substantially parallel to the side surface 115 of the bare cell 110. To this end, the bottom portion 135a is also substantially parallel to the insulating body 131.
측벽부(135b)는 바닥부(135a)에 대해 교차하는 방향, 예를 들어 수직한 방향을 따라 배치될 수 있다. The side wall portion 135b may be disposed along a direction crossing the bottom portion 135a, for example, a vertical direction.
날개부(135c)는 측벽부(135b)의 자유단 측에서 바닥부(135a)로부터 멀어지는 방향으로 연장될 수 있다. 이때, 날개부(135c)는 바닥부(135a)와 대체로 평행할 수 있다. 날개부(135c)에는 절연성 몸체(131)가 수지로서 사출될 때 용융 상태에서 침투하는 침투홀(135d)이 형성될 수 있다. 침투홀(135d)은 날개부(135c)의 폭 방향을 따라 복수 개로 형성될 수 있다. 복수의 침투홀(135d)은 도시된 바와 같이 하나의 열을 이루도록 배열될 수도 있다.The wing 135c may extend in a direction away from the bottom 135a at the free end side of the side wall 135b. In this case, the wing 135c may be substantially parallel to the bottom 135a. The wing part 135c may have a penetration hole 135d penetrating in the molten state when the insulating body 131 is injected as a resin. The penetration hole 135d may be formed in plural along the width direction of the wing 135c. The plurality of penetration holes 135d may be arranged to form one row as shown.
이상의 용접 부재(135)는, 본 도면에 예시된 바와 같이, 바닥부(135a)의 양단부에 측벽부(135b)가 각각 연결되고, 각 측벽부(135b)에는 날개부(135c)가 또한 연결된 형태일 수 있다. 그에 의해, 바닥부(135a)의 중앙을 기준으로, 양측의 측벽부(135b) 및 날개부(135c)가 서로 대칭되는 구조를 가질 수 있다. As illustrated in this drawing, the welding member 135 has a form in which sidewall portions 135b are connected to both ends of the bottom portion 135a, and wing portions 135c are also connected to each sidewall portion 135b. Can be. Thereby, the side wall portion 135b and the wing portion 135c on both sides with respect to the center of the bottom portion 135a may have a structure that is symmetrical with each other.
용접 부재(135)가 절연성 몸체(131)와 일체로 형성되기 위해, 절연성 몸체(131)는 개방부를 가질 수 있다. 상기 개방부는, 바닥부(135a)를 노출하는 노출부(131a)과, 측벽부(135b)와 날개부(135c)를 지하는 계단 형태의 계단부(131b)를 가질 수 있다. In order for the welding member 135 to be integrally formed with the insulating body 131, the insulating body 131 may have an opening. The open part may have an exposed part 131a exposing the bottom part 135a and a stepped step part 131b supporting the side wall part 135b and the wing part 135c.
이러한 구성에 의하면, 바닥부(135a)는 베어셀(110)의 측면(115)에 대해 스폿 용접(spot welding) 등의 방식으로, 베어셀(110)에 견고하게 고정된다. 이때, 스폿 용접은 일 점, 또는 이 점 이상의 다수의 포인트에 대해 이루어질 수 있다.According to this configuration, the bottom portion 135a is firmly fixed to the bare cell 110 by spot welding or the like on the side surface 115 of the bare cell 110. In this case, spot welding may be performed for one point or multiple points more than this point.
측벽부(135b)는 보호 캡(150)에 가해지는 비틀림 모멘트에 의해 결합 플레이트(130)가 좌우로 흔들리게 하는 힘(T)에 대해 저항하는 역할을 하게 된다. 좌우로 흔들리게 하는 힘(T)에 대한 저항은, 이차적으로, 바닥부(135a)에 의해서도 달성된다.The side wall portion 135b serves to resist the force T causing the coupling plate 130 to swing left and right by the torsional moment applied to the protective cap 150. The resistance to the force T swinging from side to side is secondarily also achieved by the bottom portion 135a.
날개부(135c)는 결합 플레이트(130)가 베어셀(110)의 측벽부(135b)에서 멀어지는 방향으로 떨어지게 하려는 힘(U)에 대해 저항하는 역할을 하게 된다. 이러한 힘(U)에 대한 저항은, 이차적으로, 측벽부(135b)에 의해서도 달성될 수 있다.The wing 135c serves to resist the force U to cause the coupling plate 130 to fall away from the sidewall portion 135b of the bare cell 110. Resistance to this force U can also be achieved, secondly, by the side wall portion 135b.
여기서, 날개부(135c)의 침투홀(135d)에는 절연성 몸체(131)의 일부가 침투므로, 절연성 몸체(131)와 날개부(135c), 나아가 용접 부재(135)와의 결합이 보다 강력하게 유지된다. 또한, 위 침투홀(135d)과 관련된 구성은 날개부(135c)의 좌우로 흔들리는 힘(T)에 대해 저항성을 강화해주기도 한다.Here, since a part of the insulating body 131 penetrates into the penetration hole 135d of the wing portion 135c, the coupling between the insulating body 131 and the wing portion 135c, and further, the welding member 135 is more strongly maintained. do. In addition, the configuration associated with the upper penetration hole 135d may also enhance resistance to the force T swinging to the left and right of the wing 135c.
도 4는 본 발명의 다른 실시예에 따른 결합 플레이트(130')를 보인 개념적인 단면도이다.4 is a conceptual cross-sectional view showing a coupling plate 130 ′ according to another embodiment of the present invention.
본 도면을 참조하면, 앞선 실시예에서 용접 부재(135)가 하나였던 것에 비하여, 본 실시예에서는 용접 부재가 한 쌍(136' 및 137')으로 구비된다. 그에 의해, 제1 용접 부재(136')가 절연성 몸체(131')의 일 단부 측에 치우쳐 위치하는 것이라면, 제2 용접 부재(137')는 절연성 몸체(131')의 타 단부 측에 치우쳐 위치하는 것일 수 있다.Referring to this figure, the welding members 135 are provided in pairs 136 ′ and 137 ′ in this embodiment, as compared to the one welding member 135 in the previous embodiment. Thereby, if the first welding member 136 'is positioned at one end side of the insulating body 131', the second welding member 137 'is positioned at the other end side of the insulating body 131'. It may be.
이렇게 용접 부재를 한 쌍으로 구성함에 의해, 결합 플레이트(130')가 좌우 방향으로 비틀리려는 힘(T, 도 3 참조), 및 베어셀(110)로부터 떨어지게 하는 힘(U, 도 3 참조)에도 보다 강인하게 대항할 수 있게 된다.By forming the welding member in a pair as described above, the force (T, see FIG. 3) that the coupling plate 130 ′ is twisted in the left and right directions, and the force (U, see FIG. 3) to be separated from the bare cell 110. You can fight stronger.
또한, 제1 용접 부재(136')는 결합 플레이트(130')가 베어셀(110)에 고정되게 하는 역할과 더불어, 베어셀(110)의 양극 단자(118)와 보호회로기판(120)을 전기적으로 연결하는 매개체의 역할을 하게 된다. 반면에, 제2 용접 부재(137')는 결합 플레이트(130')가 베어셀(110)에 고정되게 하는 역할만을 위해 사용될 수 있다.In addition, the first welding member 136 ′ serves to fix the coupling plate 130 ′ to the bare cell 110, and to connect the positive terminal 118 and the protection circuit board 120 of the bare cell 110. It acts as a medium for connecting electrically. On the other hand, the second welding member 137 ′ may be used only for the role of allowing the coupling plate 130 ′ to be fixed to the bare cell 110.
상기와 같은 배터리팩은 위에서 설명된 실시예들의 구성과 작동 방식에 한정되는 것이 아니다. 상기 실시예들은 각 실시예들의 전부 또는 일부가 선택적으로 조합되어 다양한 변형이 이루어질 수 있도록 구성될 수도 있다. Such a battery pack is not limited to the configuration and operation of the embodiments described above. The above embodiments may be configured such that various modifications may be made by selectively combining all or part of the embodiments.

Claims (12)

  1. 베어셀;Bare cell;
    상기 베어셀에 연결되어, 상기 베어셀의 충방전을 제어하는 보호회로기판; A protection circuit board connected to the bare cell to control charge and discharge of the bare cell;
    상기 베어셀과 상기 보호회로기판 사이에 배치되어 상기 보호회로기판을 지지하는 절연성 몸체와, 상기 절연성 몸체에 연결되며 상기 베어셀에 용접되는 용접 부재를 구비하는 결합 플레이트; 및A coupling plate disposed between the bare cell and the protective circuit board and having an insulating body supporting the protective circuit board and a welding member connected to the insulating body and welded to the bare cell; And
    상기 보호회로기판과 상기 결합 플레이트를 감싸도록 배치되는 보호 캡을 포함하는, 배터리팩.And a protective cap disposed to surround the protective circuit board and the coupling plate.
  2. 제1항에 있어서,The method of claim 1,
    상기 결합 플레이트는,The coupling plate,
    상기 절연성 몸체를 형성하는 고분자 수지와 상기 용접 부재를 이루는 금속재가 인서트 사출되어 형성된, 배터리팩.A battery pack formed by insert-injecting a polymer resin forming the insulating body and a metal material forming the welding member.
  3. 제2항에 있어서,The method of claim 2,
    상기 금속재는,The metal material,
    니켈과, 니켈-알루미늄 클래드 중 어느 하나를 포함하는, 배터리팩.A battery pack comprising any one of nickel and nickel-aluminum cladding.
  4. 제1항에 있어서,The method of claim 1,
    상기 용접 부재는,The welding member,
    상기 베어셀에 대해 용접되는 부분인 바닥부; 및A bottom part which is a part to be welded to the bare cell; And
    상기 바닥부에서 그에 대해 교차하는 방향으로 연장된 측벽부를 포함하는, 배터리팩.And a sidewall portion extending in a direction crossing the bottom portion from the bottom portion.
  5. 제4항에 있어서,The method of claim 4, wherein
    상기 측벽부는,The side wall portion,
    상기 바닥부에 대해 수직한, 배터리팩.A battery pack perpendicular to the bottom portion.
  6. 제4항에 있어서,The method of claim 4, wherein
    상기 용접 부재는,The welding member,
    상기 측벽부에서 상기 바닥부와 멀어지는 방향으로 연장된 날개부를 더 포함하는, 배터리팩.The battery pack further comprises a wing extending in a direction away from the bottom portion from the side wall.
  7. 제6항에 있어서,The method of claim 6,
    상기 날개부는,The wing portion,
    상기 바닥부에 대해 평행한, 배터리팩.Battery pack parallel to the bottom.
  8. 제6항에 있어서,The method of claim 6,
    상기 측벽부는, 상기 바닥부의 양단부에 연결되는 한 쌍으로 형성되고,The side wall portion is formed in a pair connected to both ends of the bottom portion,
    상기 날개부는, 상기 한 쌍의 측벽부 각각의 자유단에 결합되는 한 쌍으로 형성되는, 배터리팩.The wing unit is formed in a pair coupled to the free end of each of the pair of side wall portion, the battery pack.
  9. 제6항에 있어서,The method of claim 6,
    상기 절연성 몸체는,The insulating body,
    상기 바닥부를 노출하는 노출부와, 상기 측벽부와 상기 날개부를 지지하는 계단부를 구비하는 개방부를 포함하는, 배터리팩.And an open part including an exposed part exposing the bottom part and a step part supporting the side wall part and the wing part.
  10. 제6항에 있어서,The method of claim 6,
    상기 날개부는,The wing portion,
    상기 절연성 몸체의 일부가 침투되는 침투홀을 포함하는, 배터리팩.A battery pack comprising a penetration hole through which a portion of the insulating body penetrates.
  11. 제10항에 있어서,The method of claim 10,
    상기 침투홀은, 상기 날개부의 폭 방향을 따라 복수 개로 형성되는, 배터리팩.The penetration hole is formed of a plurality of battery packs along the width direction of the wing portion.
  12. 제1항에 있어서,The method of claim 1,
    상기 결합 플레이트는, 체결 돌기를 더 포함하고,The coupling plate further includes a fastening protrusion,
    상기 보호 캡은, 상기 체결 돌기가 삽입 체결되는 체결 홈을 포함하는, 배터리팩.The protective cap, the battery pack including a fastening groove into which the fastening projection is inserted fastening.
PCT/KR2015/001188 2014-07-04 2015-02-05 Battery pack WO2016003038A1 (en)

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KR10-2014-0083961 2014-07-04

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090041866A (en) * 2007-10-25 2009-04-29 주식회사 이랜텍 Battery pack
KR20090064089A (en) * 2007-12-14 2009-06-18 주식회사 엘지화학 Secondary battery pack having pcm assembly and insulating mounting member of novel structure
KR20100082677A (en) * 2009-01-09 2010-07-19 주식회사 엘지화학 Large capacity battery pack of novel structure
KR20110024250A (en) * 2009-09-01 2011-03-09 삼성에스디아이 주식회사 Secondary battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090041866A (en) * 2007-10-25 2009-04-29 주식회사 이랜텍 Battery pack
KR20090064089A (en) * 2007-12-14 2009-06-18 주식회사 엘지화학 Secondary battery pack having pcm assembly and insulating mounting member of novel structure
KR20100082677A (en) * 2009-01-09 2010-07-19 주식회사 엘지화학 Large capacity battery pack of novel structure
KR20110024250A (en) * 2009-09-01 2011-03-09 삼성에스디아이 주식회사 Secondary battery

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KR20160004849A (en) 2016-01-13

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