WO2020027373A1 - Battery cell assembly - Google Patents

Battery cell assembly Download PDF

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Publication number
WO2020027373A1
WO2020027373A1 PCT/KR2018/012102 KR2018012102W WO2020027373A1 WO 2020027373 A1 WO2020027373 A1 WO 2020027373A1 KR 2018012102 W KR2018012102 W KR 2018012102W WO 2020027373 A1 WO2020027373 A1 WO 2020027373A1
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WO
WIPO (PCT)
Prior art keywords
battery cell
contact
battery
cell assembly
battery cells
Prior art date
Application number
PCT/KR2018/012102
Other languages
French (fr)
Korean (ko)
Inventor
이득용
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이득용
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Publication date
Application filed by 이득용 filed Critical 이득용
Publication of WO2020027373A1 publication Critical patent/WO2020027373A1/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
    • 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
    • H01M10/425—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
    • 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • 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 cell assembly comprising a plurality of battery cells.
  • secondary batteries capable of charging and discharging are widely used not only for small products such as mobile devices, but also for medium and large devices such as electric vehicles, and are being applied to products in various fields.
  • One or two or more battery cells may be applied to a small mobile product, but a medium-large battery module that electrically connects a plurality of battery cells is used for a medium-to-large device such as an electric vehicle due to the necessity of high output capacity.
  • Secondary batteries are classified into lithium ion batteries, lithium ion polymer batteries, lithium polymer batteries, and the like according to the configuration of the electrodes and the electrolyte, and are classified into cylindrical batteries, square batteries, and pouch batteries according to the shape of the battery case.
  • cylindrical batteries generally have greater capacitance than square and pouch cells.
  • welding such as spot welding.
  • FIG. 1 shows an example of a battery module consisting of a conventional cylindrical battery.
  • a conventional battery module 50 has a panel-shaped bus bar electrically connecting an array 30 including a plurality of cylindrical cells 10 and electrode terminals of each of the cells 10. It is configured to include (20).
  • the electrode terminal of the battery 10 is electrically connected to the bus bar 20 by welding.
  • the battery module constructed by the above method has the following problems.
  • busbars made of nickel or nickel alloys with relatively low electrical conductivity must be used for welding electrode terminals and busbars. Therefore, current loss of the battery cells is relatively reduced due to the inability to use copper panels having excellent electrical conductivity. There is no choice but to take it.
  • the busbars are simultaneously connected to the plurality of batteries by welding, and it is not easy to determine whether the connection between the electrode terminals of each of the plurality of batteries and the busbars is normal in the assembling process. If bad connection is found between any one battery and the busbar after assembly, the entire assembled battery module should be discarded.
  • connection by welding is vulnerable to an external impact or a heat generation phenomenon generated when the battery module is used, and therefore poor connection between the bus bar and the electrode terminal is likely to occur during use of the battery module.
  • a connection failure occurs between the busbar and any one of the electrode terminals during use, it is difficult to selectively weld only the battery in which the failure occurs with the busbar, so the entire battery module must be disposed of.
  • the conventional battery module manufactured in the above-described manner is difficult to manufacture in a laminated structure, and thus has a disadvantage in terms of space utilization due to low structural design freedom.
  • the present invention is to solve the above-mentioned problems of the prior art, in configuring a battery cell assembly using a cylindrical battery cell, it is easy to individually check and repair the electrical connection with the unit battery cell, the external during use
  • An object of the present invention is to provide a battery cell assembly which can fundamentally prevent a poor electrical connection due to an impact or heat generation of a battery, and to easily design a cylindrical battery as a battery module having various structures.
  • circuit panel electrically connected to the plurality of battery cells can be made of a material having excellent electrical conductivity, so that internal resistance of the battery cell assembly can be minimized. It is to provide a battery cell assembly that is easy to configure.
  • a battery cell assembly includes a battery cell array including a plurality of cylindrical battery cells each having electrode terminals at both ends; A pair of holder plates disposed at both ends of the battery cell array, contact holes are formed at positions corresponding to the electrode terminals of each of the battery cells, and formed of an electrically insulating material; And a contact bolt having one end electrically contacting an electrode terminal of each of the battery cells, the other end protruding outwardly through the contact hole, and a contact bolt formed of an electrically conductive material.
  • the contact bolt may be screwed with the contact hole.
  • the contact bolt may include a disk-shaped flange having a pair of rotating holes disposed to face each other on a circumferential contact protrusion and an outer side; It may be configured to include; and a male screw portion having a diameter smaller than the diameter of the flange.
  • the contact hole may include an accommodation groove in which the flange is accommodated; And a female screw portion screwed to the male screw portion.
  • the contact bolt may further include a screwdriver recess formed in one end of the male screw portion facing the flange.
  • each of the pair of holder plates is formed with an interpolation portion in which the end of the battery cell array is accommodated.
  • the interpolation portion is more preferably formed of a grating to maintain the interval between the plurality of battery cells.
  • a holder plate fastening means for fastening the pair of holder plates disposed at both ends of the battery cell array may be further included.
  • the battery cell assembly according to the present invention, the circuit panel disposed on the outer surface of each of the pair of holder plate; And an insulating panel interposed between the circuit panel and the outer surface of the holder plate.
  • the battery cell array may include two or more unit arrays, and circuit panels are provided according to the number of unit arrays, and each circuit panel is connected to each of a plurality of battery cells constituting the unit array. It may be electrically connected to the bolt.
  • a fastener may be formed at one side of a holder plate included in the battery cell assembly according to the present invention, and a plurality of batteries may be formed through a support that is fastened to the fastener between opposing holder plates of a neighboring battery cell assembly.
  • the cell assembly may be laminated by any structure.
  • the present invention when configuring a battery cell assembly using a cylindrical battery cell, it is easy to individually check and adjust the electrical connection with the unit battery cell, and the electrical shock due to external impact or heat generation of the battery during use It is possible to fundamentally prevent a poor connection, it is possible to provide a battery cell assembly that is easy to design a cylindrical battery as a battery module having a variety of structures.
  • the battery cell assembly according to the present invention it is possible to fundamentally prevent a problem of the external shock and poor connection caused by the heat generation of the battery cell, which is a problem in the conventional battery module manufactured by the welding method.
  • a copper panel excellent in electrical conductivity can be used as the circuit panel.
  • the battery cell assembly according to the present invention does not use the welding method, copper panels having excellent electrical conductivity are used. It is possible to do By constructing the circuit panel using copper, the internal resistance of the battery cell assembly can be minimized and it is effective to stabilize the electrical capacity of the battery module.
  • the contact state of each battery cell and the fastening bolt can be easily confirmed after assembling or in use.
  • the individual battery cells, the contact bolts and the circuit panel are mechanically assembled, it is relatively easy to replace the battery cells when a defect occurs in a specific battery cell. Therefore, unlike the prior art, when a failure occurs in the battery module during use, since it is easy to repair the product, not only the overall manufacturing cost but also the customer service cost can be greatly reduced.
  • the battery cell assembly according to the present invention when used, it is very easy to design a battery module having various laminated structures even when a cylindrical battery is applied.
  • FIG. 1 is a view showing an exemplary battery cell assembly by a conventional welding method.
  • FIG. 2 is a perspective view of a battery cell assembly according to the present invention.
  • FIG. 3 is an exploded perspective view of a battery cell assembly according to the present invention.
  • FIG. 4 is a perspective view showing a contact bolt used in the battery cell assembly according to the present invention.
  • FIG. 5 is a partial cross-sectional view illustrating a connection structure of an electrode terminal, a contact bolt, and a contact hole provided in a battery cell in the battery cell assembly according to the present invention.
  • FIG. 6 is a plan view exemplarily illustrating that a battery cell array may be configured as a plurality of unit arrays in the battery cell assembly according to the present invention.
  • FIG. 7 is a schematic view showing that a battery module of a laminated structure may be configured by providing a plurality of battery cell assemblies according to the present invention.
  • a battery cell assembly includes a battery cell array including a plurality of cylindrical battery cells each having electrode terminals at both ends; A pair of holder plates disposed at both ends of the battery cell array, contact holes are formed at positions corresponding to the electrode terminals of each of the battery cells, and formed of an electrically insulating material; And a contact bolt having one end electrically contacting an electrode terminal of each of the battery cells, the other end protruding outwardly through the contact hole, and a contact bolt formed of an electrically conductive material.
  • the contact bolt may be screwed with the contact hole.
  • the contact bolt may include a disk-shaped flange having a pair of rotating holes disposed to face each other on a circumferential contact protrusion and an outer side; It may be configured to include; and a male screw portion having a diameter smaller than the diameter of the flange.
  • the contact hole may include an accommodation groove in which the flange is accommodated; And a female screw portion screwed to the male screw portion.
  • the contact bolt may further include a screwdriver recess formed in one end of the male screw portion facing the flange.
  • each of the pair of holder plates is formed with an interpolation portion in which the end of the battery cell array is accommodated.
  • the interpolation portion is more preferably formed of a grating to maintain the interval between the plurality of battery cells.
  • a holder plate fastening means for fastening the pair of holder plates disposed at both ends of the battery cell array may be further included.
  • the battery cell assembly according to the present invention, the circuit panel disposed on the outer surface of each of the pair of holder plate; And an insulating panel interposed between the circuit panel and the outer surface of the holder plate.
  • the battery cell array may include two or more unit arrays, and circuit panels are provided according to the number of unit arrays, and each circuit panel is connected to each of a plurality of battery cells constituting the unit array. It may be electrically connected to the bolt.
  • a fastener may be formed at one side of a holder plate included in the battery cell assembly according to the present invention, and a plurality of batteries may be formed through a support that is fastened to the fastener between opposing holder plates of a neighboring battery cell assembly.
  • the cell assembly may be laminated by any structure.
  • the battery cell assembly 100 includes a battery cell array 110 including a plurality of battery cells 112 and disposed at both ends of the battery cell array 110, respectively. It comprises a first holder plate 121 and the second holder plate 122 of the seasonal insulating material.
  • the battery cell 112 is a cylindrical battery having electrode terminals 112a functioning as positive (+) terminals and negative (-) terminals, respectively, in FIG. 2.
  • the plurality of battery cells 112 includes five rows and eight columns.
  • the example is arranged in an array structure having a, it may be arranged in an array structure having a variable number of matrices as needed.
  • the battery cell assembly including the battery cell array having the matrix structure described above is manufactured by assembling detailed components to be described below.
  • first and second holder plates 121 and 122 are disposed at both ends of the battery cell array 110 including the plurality of battery cells 112.
  • the first and second holder plates 121 and 122 may be manufactured using an electrically insulating material, for example, a synthetic resin material.
  • the holder plates 121 and 122 have a dimension substantially covering both ends of the battery cell array 110, and may be used by using two sets of holder plates having the same shape.
  • An interpolation portion 130 may be formed on an inner surface of each holder plate 121 and 122 in contact with the battery cell array 110.
  • the end portion of the battery cell array 110 is accommodated in the inner surface of the holder plates 121 and 122 in the interpolation portion 130, and grooves having the same shape as the side profile of the array 110 formed of the cylindrical battery cells 112 are provided. Is formed in the end of the array 110 can be fixed tightly.
  • a grating 131 may be formed in the interpolation part 130, and each battery cell 112 constituting the array 110 may have a predetermined distance from the neighboring battery cell 112 by the grating 131.
  • the battery cells 112 may be fixed to the holder plates 121 and 122.
  • an empty space may be formed between the battery cells 112 by the lattice 131, and heat generated in the battery cells 112 may be easily released to the outside by the grid 131.
  • the contact plates 133 are formed in the holder plates 121 and 122 at positions corresponding to the electrode terminals 112a provided in the respective battery cells 112.
  • the contact hole 133 is formed through the holder plates 121 and 122.
  • a contact bolt 140 formed of an electrically conductive material is inserted into the contact hole 133.
  • One end of the contact bolt 140 is electrically contacted with the electrode terminal 112a of the battery cell 112, and the other end thereof is disposed to protrude outward through the contact hole 133.
  • the contact bolt 140 may be screwed into the contact hole 133. That is, since the contact bolt 140 and the contact hole 133 are screwed, when the contact bolt 140 is rotated in one direction, one surface of the contact bolt 140 approaches the electrode terminal 112a and the other direction. Rotating protrudes outward from the holder plates 121 and 122. That is, the contact distance between the contact bolt 140 and the electrode terminal 112a can be precisely adjusted by adjusting the rotation speed of the contact bolt 140.
  • the contact bolt 140 may include a disk-shaped flange 141 and a male screw portion 144 having a diameter smaller than the diameter of the flange 141.
  • a contact protrusion 142 protruding outward is formed in the flange 141 to improve contact reliability between the contact bolt 140 and the electrode terminal 112a.
  • a pair of rotating holes 143 are arranged on the circumference of the flange 141 to face each other. Rotating hole 143 is a means for rotating the contact bolt 140, it is possible to rotate the contact bolt 140 by using a separate rotary tool fitted to the pair of rotating holes (143).
  • one end of the male screw portion 144 facing the flange 141 may be formed with a screwdriver groove 145.
  • the groove 145 may be formed in various shapes.
  • the groove 145 is a means for rotating the contact bolt 140 on the opposite side of the pair of turning holes 143.
  • the end of the driver which is used as a screwdriver, is inserted into the groove 145. After fitting, the contact bolt 140 may be rotated. Using a pair of rotating holes 143 and the groove 145, respectively, the contact bolt 140 can be rotated from the opposite side.
  • the contact holes 133 on the inner surfaces 121a and 122a of the holder plates 121 and 122 may be described.
  • the receiving groove 133a in which the flange 141 is accommodated is provided in the) area, and the female screw part 133b is screwed to the male screw part 144 on the inner wall surface of the contact hole 133.
  • the contact bolt 140 is fastened to the contact hole 133, the flange 141 may be moved forward and backward by a predetermined distance in the accommodation groove 133a.
  • the fastening means 150 is a means for physically and firmly fixing two opposing holder plates 121 and 122 to the array 110, for example, a wrench bolt 151 and a nut 152 may be used.
  • the contact bolt 140 may be rotated to precisely adjust the contact with each battery cell 112.
  • the contact bolt 140 is rotated so that the flange 141 and the contact protrusion 142 may be in close contact with the corresponding electrode terminal 112a by using the recess 145.
  • the holder plates 121 and 122 are brought into tight contact with the array 110, and one end of the contact bolt 140 penetrates through the contact hole 133. Will be exposed.
  • the exposed contact bolt 140 is fastened to the circuit panel 160 connecting the plurality of battery cells 112 constituting the unit array in parallel with each other.
  • a plurality of openings 161 through which one end of the contact bolt 140 penetrates is provided in the circuit panel 160 disposed on the outer surfaces of the holder plates 121 and 122.
  • An end of the contact bolt 140 corresponding to the battery cell 112 to be connected in parallel is exposed through an opening 161 formed in the circuit panel 160, and an end of the exposed contact bolt 140 is a washer 146.
  • a nut 147 to be electrically connected to the circuit panel 160.
  • the circuit panel 160 used in the battery cell assembly 100 having the above-described structure may be manufactured using a copper panel having excellent electrical conductivity unlike a battery module manufactured by a conventional welding method.
  • the electrode terminals of the unit battery cells had to be connected to the busbars by the welding method, and thus copper panels could not be used.
  • the battery cell assembly according to the present invention does not use a welding method, it is possible to use a copper panel having excellent electrical conductivity.
  • the internal resistance of the battery cell assembly can be minimized and it is effective to stabilize the electrical capacity of the battery module.
  • there is no risk of disconnection between the contact bolt and the circuit panel due to the heat generation of the battery cell and it is possible to secure electrical connection reliability against external impact.
  • each battery cell and the contact bolt can be easily confirmed after assembling or in use.
  • the individual battery cells, the contact bolts and the circuit panel are mechanically assembled, it is relatively easy to replace the battery cells when a defect occurs in a specific battery cell.
  • the repair of the product is easy, not only the overall manufacturing cost but also customer service costs can be greatly reduced.
  • an insulating panel 170 may be interposed between the circuit panel 160 and the outer surfaces of the holder plates 121 and 122.
  • the insulating panel 170 electrically separates the circuit panel 160 from the peripheral area and serves to block heat generated from the circuit panel 160 from the outside.
  • the insulating panel 170 and the circuit panel 160 may be provided as separate members as shown in FIG. 3, and a single circuit pattern (circuit panel) is integrally formed on one insulating substrate (insulating panel). A substrate can also be used.
  • FIG. 6 shows an example of dividing an array of four rows and four columns into two unit arrays each having two rows and four columns.
  • the battery cells constituting each unit array are connected in parallel by the first circuit panel 160a and the second circuit panel 160b, respectively. That is, contact bolts 140a connected to a plurality of battery cells constituting a corresponding unit array are electrically connected to the first circuit panel 160a, and a corresponding unit array is connected to the second circuit panel 160b.
  • Contact bolts 140b respectively connected to a plurality of battery cells constituting the same are electrically connected to each other.
  • 6 is an exemplary embodiment showing that the circuit can be configured in various ways using the battery cell assembly according to the present invention.
  • the unit array may be variously configured within one battery module. .
  • the battery cell assembly 100 illustrated in FIG. 2 may be provided as a plurality of stacked structures.
  • the four battery cell assemblies 100a to 100d may be stacked using fasteners 180 and a support 181 provided at one side of the holder plates 121 and 122, respectively.
  • the support 181 is coupled to the fastener 180 between each holder plate 121 and 122 facing each other between neighboring battery cell assemblies.
  • the fastener 180 and the support 181 may be provided with a through hole therein, respectively, and may fasten a predetermined bolt and nut through these through holes to mechanically bind neighboring battery cell assemblies.
  • the neighboring battery cell assembly may be electrically connected through a bar link 182 that is fitted between the circuit panel and the fastening bolt provided in each. Therefore, when the battery cell assembly according to the present invention is used, it is very easy to design a battery module having various laminated structures even when a cylindrical battery is applied.

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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)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

A battery cell assembly according to the present invention may be attained by comprising: a battery cell array composed of a plurality of cylindrical battery cells each having electrode terminals provided at both ends thereof, respectively; a pair of holder plates that are respectively disposed at both ends of the battery cell array, have contact holes formed at positions corresponding to the respective electrode terminals of the battery cells, and are formed of an electrically insulating material; and contact bolts formed of an electrically conductive material, each having one end that is in electrical contact with the electrode terminal of each of the battery cells and the other end that is disposed passing through the contact hole and protruding outward.

Description

전지셀 어셈블리Battery cell assembly
본 발명은 복수의 전지셀을 포함하는 전지셀 어셈블리에 관한 것이다. The present invention relates to a battery cell assembly comprising a plurality of battery cells.
최근 충방전이 가능한 이차전지는 모바일 기기 등의 소형 제품 뿐만 아니라, 전기자동차 등 중대형 장치에도 널리 사용되고 있으며, 점차 다양한 분야의 제품에 적용되고 있다. 소형 모바일 제품에는 디바이스 1대당 하나 또는 둘 이상의 전지셀이 적용될 수 있으나, 전기자동차 등 중대형 장치에는 고출력 대용량의 필요성으로 다수의 전지셀을 전기적으로 연결한 중대형 전지모듈이 사용된다.Recently, secondary batteries capable of charging and discharging are widely used not only for small products such as mobile devices, but also for medium and large devices such as electric vehicles, and are being applied to products in various fields. One or two or more battery cells may be applied to a small mobile product, but a medium-large battery module that electrically connects a plurality of battery cells is used for a medium-to-large device such as an electric vehicle due to the necessity of high output capacity.
이차전지는, 전극과 전해액의 구성에 따라 리튬이온전지, 리튬이온폴리머전지, 리튬폴리머전지 등으로 분류되고, 전지케이스의 형상에 따라 원통형 전지, 각형 전지, 파우치형 전지로 분류된다. 여기서, 원통형 전지는 일반적으로 각형 및 파우치형 전지에 비해 큰 전기용량을 가진다. 그러나, 원통형 전지의 외형적 특성상 적층 구조로의 배열을 유지하는데 어려움이 있다. 종래에는 원통형 전지들을 배열하고 테이프로 고정한 후, 각 전지들의 전극단자를 스폿용접과 같은 용접에 의해 전기적으로 접속하였다.Secondary batteries are classified into lithium ion batteries, lithium ion polymer batteries, lithium polymer batteries, and the like according to the configuration of the electrodes and the electrolyte, and are classified into cylindrical batteries, square batteries, and pouch batteries according to the shape of the battery case. Here, cylindrical batteries generally have greater capacitance than square and pouch cells. However, there is a difficulty in maintaining the arrangement in the laminated structure due to the external characteristics of the cylindrical battery. Conventionally, cylindrical cells were arranged and fixed with tape, and then the electrode terminals of the respective batteries were electrically connected by welding such as spot welding.
도 1에는 종래의 원통형 전지로 구성된 전지모듈의 일례를 도시하였다. 도 1에서 보듯이, 종래의 전지모듈(50)은 다수의 원통형 전지들(10)을 포함하는 어레이(30)와, 각 전지들(10)의 전극단자를 전기적으로 연결하는 패널 형상의 버스바(20)을 포함하여 구성된다. 여기서, 전지(10)의 전극단자는 용접에 의해 버스바(20)와 전기적으로 접속된다.Figure 1 shows an example of a battery module consisting of a conventional cylindrical battery. As shown in FIG. 1, a conventional battery module 50 has a panel-shaped bus bar electrically connecting an array 30 including a plurality of cylindrical cells 10 and electrode terminals of each of the cells 10. It is configured to include (20). Here, the electrode terminal of the battery 10 is electrically connected to the bus bar 20 by welding.
상술한 방법에 의해 구성된 전지모듈은 다음과 같은 문제점을 가진다. 즉,전극단자와 버스바의 용접을 위해서 부득이 전기전도도가 상대적으로 낮은 니켈 또는 니켈 합금으로 제조된 버스바를 사용해야 하므로, 전기전도도가 우수한 구리패널을 사용하지 못함으로 인해 상대적으로 전지셀의 전류 손실을 감수할 수밖에 없다. 또한, 버스바는 용접에 의해 복수개의 전지와 동시에 접속되는데, 조립 과정에서 복수의 전지 각각의 전극단자와 버스바 사이의 접속이 정상적인지 여부를 판별하는 것이 용이하지 않다. 만약 조립 후에 어느 하나의 전지와 버스바 사이에 접속 불량이 발견되면, 조립된 전지모듈 전체를 전량 폐기해야 한다. The battery module constructed by the above method has the following problems. In other words, for welding electrode terminals and busbars, busbars made of nickel or nickel alloys with relatively low electrical conductivity must be used. Therefore, current loss of the battery cells is relatively reduced due to the inability to use copper panels having excellent electrical conductivity. There is no choice but to take it. In addition, the busbars are simultaneously connected to the plurality of batteries by welding, and it is not easy to determine whether the connection between the electrode terminals of each of the plurality of batteries and the busbars is normal in the assembling process. If bad connection is found between any one battery and the busbar after assembly, the entire assembled battery module should be discarded.
또한, 용접에 의한 접속은, 외부 충격이나 전지모듈의 사용시 발생되는 발열 현상에 취약하므로, 전지모듈의 사용 중에 버스바와 전극단자 사이에 접속 불량이 발생하기 쉽다. 이렇게 사용중에 버스바와 어느 하나의 전극단자 사이에 접속 불량이 발생한 경우, 불량이 발생된 전지만을 선택적으로 버스바와 용접하기 어려우므로 부득이 전지모듈 전체를 폐기해야 한다.In addition, the connection by welding is vulnerable to an external impact or a heat generation phenomenon generated when the battery module is used, and therefore poor connection between the bus bar and the electrode terminal is likely to occur during use of the battery module. When a connection failure occurs between the busbar and any one of the electrode terminals during use, it is difficult to selectively weld only the battery in which the failure occurs with the busbar, so the entire battery module must be disposed of.
나아가, 상술한 방식으로 제조된 종래의 전지모듈은 적층 구조로 제조하기 어려우며, 따라서 구조적인 설계 자유도가 낮아 공간 활용 측면에서 단점을 가진다.Furthermore, the conventional battery module manufactured in the above-described manner is difficult to manufacture in a laminated structure, and thus has a disadvantage in terms of space utilization due to low structural design freedom.
본 발명은 상술한 종래기술의 문제점을 해결하기 위한 것으로서, 원통형 전지셀을 이용하여 전지셀 어셈블리를 구성함에 있어서, 단위 전지셀과의 전기적 접속을 개별적으로 확인 및 수리하는 것이 용이하고, 사용중에 외부 충격이나 전지의 발열 현상에 의한 전기적 접속 불량을 근본적으로 방지할 수 있으며, 원통형 전지를 다양한 구조의 전지모듈로 설계하는 것이 용이한 전지셀 어셈블리를 제공하는 것을 목적으로 한다.The present invention is to solve the above-mentioned problems of the prior art, in configuring a battery cell assembly using a cylindrical battery cell, it is easy to individually check and repair the electrical connection with the unit battery cell, the external during use An object of the present invention is to provide a battery cell assembly which can fundamentally prevent a poor electrical connection due to an impact or heat generation of a battery, and to easily design a cylindrical battery as a battery module having various structures.
나아가, 본 발명의 다른 목적은, 복수의 전지셀과 전기적으로 접속된 회로패널을 전기전도도가 우수한 재질로 구성할 수 있으므로 전지셀 어셈블리의 내부 저항을 최소화할 수 있으며, 하나의 모듈 내에서 다양한 회로 구성이 용이한 전지셀 어셈블리를 제공하는 것이다.Furthermore, another object of the present invention is that the circuit panel electrically connected to the plurality of battery cells can be made of a material having excellent electrical conductivity, so that internal resistance of the battery cell assembly can be minimized. It is to provide a battery cell assembly that is easy to configure.
본 발명의 목적들은 이상에서 언급한 목적들로 제한되지 않으며, 언급되지 않은 또 다른 목적들은 아래의 기재로부터 명확하게 이해될 수 있을 것이다.The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood from the following description.
본 발명에 따른 전지셀 어셈블리는, 양단에 각각 전극단자가 마련된 원통형의 전지셀이 복수개로 구성된 전지셀 어레이; 상기 전지셀 어레이 양단에 각각 배치되고, 상기 전지셀 각각의 상기 전극단자에 대응하는 위치에 컨택홀이 형성되며, 전기절연성 재질로 형성된 한쌍의 홀더 플레이트; 및 일단이 상기 전지셀 각각의 전극단자에 전기적으로 접촉되고, 타단이 상기 컨택홀을 관통하여 외측으로 돌출되게 배치되며, 전기전도성 재질로 형성된 컨택볼트;를 포함하여 달성될 수 있다.A battery cell assembly according to the present invention includes a battery cell array including a plurality of cylindrical battery cells each having electrode terminals at both ends; A pair of holder plates disposed at both ends of the battery cell array, contact holes are formed at positions corresponding to the electrode terminals of each of the battery cells, and formed of an electrically insulating material; And a contact bolt having one end electrically contacting an electrode terminal of each of the battery cells, the other end protruding outwardly through the contact hole, and a contact bolt formed of an electrically conductive material.
여기서, 상기 컨택볼트는 상기 컨택홀과 나사 체결될 수 있다. 구체적으로, 상기 컨택볼트는, 외측으로 돌출된 컨택돌기 및 원주상에 서로 대향하게 배치된 한쌍의 회동구가 형성된 원판형의 플랜지; 및 상기 플랜지의 직경보다 작은 직경을 가진 수나사부;를 포함하여 구성될 수 있다. 그리고, 상기 컨택홀은, 상기 플랜지가 수용되는 수용홈; 및 상기 수나사부와 나사 체결되는 암나사부;를 포함하여 구성될 수 있다. 나아가, 상기 컨택볼트는 상기 플랜지에 대향하는 상기 수나사부의 일단에 형성된 나사돌리개용 요홈을 더 포함할 수 있다.Here, the contact bolt may be screwed with the contact hole. Specifically, the contact bolt may include a disk-shaped flange having a pair of rotating holes disposed to face each other on a circumferential contact protrusion and an outer side; It may be configured to include; and a male screw portion having a diameter smaller than the diameter of the flange. The contact hole may include an accommodation groove in which the flange is accommodated; And a female screw portion screwed to the male screw portion. Furthermore, the contact bolt may further include a screwdriver recess formed in one end of the male screw portion facing the flange.
아울러, 상기 한쌍의 홀더 플레이트 각각의 내측면에는 상기 전지셀 어레이의 단부가수용되는 내삽부가 형성된 것이 바람직하다. 그리고, 상기 내삽부에는 복수의 전지셀들 사이의 간격을 유지하는 격자가 형성된 것이 더욱 바람직하다.In addition, it is preferable that the inner surface of each of the pair of holder plates is formed with an interpolation portion in which the end of the battery cell array is accommodated. Further, the interpolation portion is more preferably formed of a grating to maintain the interval between the plurality of battery cells.
상기 전지셀 어레이의 양단에 배치된 상기 한쌍의 홀더 플레이트를 상호 체결하는 홀더 플레이트 체결수단을 더 포함할 수 있다.A holder plate fastening means for fastening the pair of holder plates disposed at both ends of the battery cell array may be further included.
한편, 본 발명에 따른 전지셀 어셈블리는, 상기 한쌍의 홀더 플레이트 각각의 외측면에 배치되는 회로패널; 및 상기 회로패널 및 상기 홀더 플레이트의 외측면 사이에 개재되는 절연패널;을 더 포함할 수 있다.On the other hand, the battery cell assembly according to the present invention, the circuit panel disposed on the outer surface of each of the pair of holder plate; And an insulating panel interposed between the circuit panel and the outer surface of the holder plate.
또한, 상기 전지셀 어레이는 2 이상의 단위 어레이를 포함할 수 있고, 회로패널은 단위 어레이의 개수에 따라 구비되어, 각각의 회로패널은 해당 단위 어레이를 구성하는 다수의 전지셀에 각각 접속된 상기 컨택볼트와 전기적으로 접속될 수 있다.In addition, the battery cell array may include two or more unit arrays, and circuit panels are provided according to the number of unit arrays, and each circuit panel is connected to each of a plurality of battery cells constituting the unit array. It may be electrically connected to the bolt.
나아가, 본 발명에 따른 전지셀 어셈블리에 포함되는 홀더 플레이트의 일측에는 체결구가 형성될 수 있고, 이웃하는 전지셀 어셈블리의 대향하는 홀더 플레이트 사이에서 상기 체결구에 결속되는 지지체를 통해, 복수의 전지셀 어셈블리를 임의의 구조로 적층하여 구성할 수 있다.Furthermore, a fastener may be formed at one side of a holder plate included in the battery cell assembly according to the present invention, and a plurality of batteries may be formed through a support that is fastened to the fastener between opposing holder plates of a neighboring battery cell assembly. The cell assembly may be laminated by any structure.
본 발명에 따르면, 원통형 전지셀을 이용하여 전지셀 어셈블리를 구성하는 경우에, 단위 전지셀과의 전기적 접속을 개별적으로 확인 및 조정하는 것이 용이하고, 사용중에 외부 충격이나 전지의 발열 현상에 의한 전기적 접속 불량을 근본적으로 방지할 수 있으며, 원통형 전지를 다양한 구조를 갖는 전지모듈로 설계하는 것이 용이한 전지셀 어셈블리를 제공할 수 있다.According to the present invention, when configuring a battery cell assembly using a cylindrical battery cell, it is easy to individually check and adjust the electrical connection with the unit battery cell, and the electrical shock due to external impact or heat generation of the battery during use It is possible to fundamentally prevent a poor connection, it is possible to provide a battery cell assembly that is easy to design a cylindrical battery as a battery module having a variety of structures.
특히, 본 발명에 따른 전지셀 어셈블리에서는, 용접 방식으로 제조된 종래의 전지모듈에서 문제가 되는 외부충격 및 전지셀의 발열에 따른 접속 불량 문제를 근본적으로 방지할 수 있다. 또한, 본 발명에서는 회로패널로서 전기전도도가 우수한 구리패널을 이용할 수 있다. 종래에는 단위 전지셀의 전극단자를 용접방식에 의해 버스바와 접속해야 했기 때문에, 구리패널을 이용할 수 없었으나, 본 발명에 따른 전지셀 어셈블리는 용접방식을 이용하지 않으므로 전기전도도가 우수한 구리패널을 사용하는 것이 가능하다. 구리를 이용하여 회로패널을 구성하면 전지셀 어셈블리의 내부 저항을 최소화할 수 있으며, 전지 모듈의 전기적 용량의 안정화에 효과적이다. In particular, in the battery cell assembly according to the present invention, it is possible to fundamentally prevent a problem of the external shock and poor connection caused by the heat generation of the battery cell, which is a problem in the conventional battery module manufactured by the welding method. In the present invention, a copper panel excellent in electrical conductivity can be used as the circuit panel. Conventionally, since the electrode terminals of the unit battery cells had to be connected to the busbars by welding, copper panels could not be used. However, since the battery cell assembly according to the present invention does not use the welding method, copper panels having excellent electrical conductivity are used. It is possible to do By constructing the circuit panel using copper, the internal resistance of the battery cell assembly can be minimized and it is effective to stabilize the electrical capacity of the battery module.
또한, 개개의 전지셀과 체결볼트의 접촉 상태는 조립후 혹은 사용중에도 용이하게 확인할 수 있다. 본 발명에 따른 전지셀 어셈블리는 개개의 전지셀, 컨택볼트 및 회로패널이 기계적으로 조립되어 있으므로, 특정 전지셀에 불량이 발생한 경우 해당 전지셀을 교체하는 것이 비교적 간편하다. 그러므로, 종래와 달리 사용 중에 전지모듈에 불량이 발생한 경우 제품의 수리가 용이하므로, 전체적인 제조비용 뿐만 아니라 고객 서비스 비용이 대폭 절감될 수 있다.In addition, the contact state of each battery cell and the fastening bolt can be easily confirmed after assembling or in use. In the battery cell assembly according to the present invention, since the individual battery cells, the contact bolts and the circuit panel are mechanically assembled, it is relatively easy to replace the battery cells when a defect occurs in a specific battery cell. Therefore, unlike the prior art, when a failure occurs in the battery module during use, since it is easy to repair the product, not only the overall manufacturing cost but also the customer service cost can be greatly reduced.
나아가, 본 발명에 따른 전지셀 어셈블리를 이용하면, 원통형 전지를 적용하는 경우에도 다양한 적층 구조의 전지모듈을 설계하는 것이 매우 용이하다.Furthermore, when the battery cell assembly according to the present invention is used, it is very easy to design a battery module having various laminated structures even when a cylindrical battery is applied.
도 1은 종래의 용접방식에 의한 전지셀 어셈블리를 예시적으로 도시한 도면이다.1 is a view showing an exemplary battery cell assembly by a conventional welding method.
도 2는 본 발명에 따른 전지셀 어셈블리의 사시도이다.2 is a perspective view of a battery cell assembly according to the present invention.
도 3은 본 발명에 따른 전지셀 어셈블리의 분해 사시도이다.3 is an exploded perspective view of a battery cell assembly according to the present invention.
도 4는 본 발명에 따른 전지셀 어셈블리에 사용되는 컨택볼트를 도시한 사시도이다.4 is a perspective view showing a contact bolt used in the battery cell assembly according to the present invention.
도 5는 본 발명에 따른 전지셀 어셈블리에서 전지셀에 마련된 전극단자, 컨택볼트 및 컨택홀의 접속 구조를 도시한 부분단면도이다.5 is a partial cross-sectional view illustrating a connection structure of an electrode terminal, a contact bolt, and a contact hole provided in a battery cell in the battery cell assembly according to the present invention.
도 6은 본 발명에 따른 전지셀 어셈블리에서 전지셀 어레이를 복수개의 단위어레이로 구성할 수 있음을 예시적으로 도시한 평면도이다.6 is a plan view exemplarily illustrating that a battery cell array may be configured as a plurality of unit arrays in the battery cell assembly according to the present invention.
도 7은 본 발명에 따른 전지셀 어셈블리를 복수개로 구비하여 적층구조의 전지모듈을 구성할 수 있음을 보여주는 개요도이다.7 is a schematic view showing that a battery module of a laminated structure may be configured by providing a plurality of battery cell assemblies according to the present invention.
본 발명에 따른 전지셀 어셈블리는, 양단에 각각 전극단자가 마련된 원통형의 전지셀이 복수개로 구성된 전지셀 어레이; 상기 전지셀 어레이 양단에 각각 배치되고, 상기 전지셀 각각의 상기 전극단자에 대응하는 위치에 컨택홀이 형성되며, 전기절연성 재질로 형성된 한쌍의 홀더 플레이트; 및 일단이 상기 전지셀 각각의 전극단자에 전기적으로 접촉되고, 타단이 상기 컨택홀을 관통하여 외측으로 돌출되게 배치되며, 전기전도성 재질로 형성된 컨택볼트;를 포함하여 달성될 수 있다.A battery cell assembly according to the present invention includes a battery cell array including a plurality of cylindrical battery cells each having electrode terminals at both ends; A pair of holder plates disposed at both ends of the battery cell array, contact holes are formed at positions corresponding to the electrode terminals of each of the battery cells, and formed of an electrically insulating material; And a contact bolt having one end electrically contacting an electrode terminal of each of the battery cells, the other end protruding outwardly through the contact hole, and a contact bolt formed of an electrically conductive material.
여기서, 상기 컨택볼트는 상기 컨택홀과 나사 체결될 수 있다. 구체적으로, 상기 컨택볼트는, 외측으로 돌출된 컨택돌기 및 원주상에 서로 대향하게 배치된 한쌍의 회동구가 형성된 원판형의 플랜지; 및 상기 플랜지의 직경보다 작은 직경을 가진 수나사부;를 포함하여 구성될 수 있다. 그리고, 상기 컨택홀은, 상기 플랜지가 수용되는 수용홈; 및 상기 수나사부와 나사 체결되는 암나사부;를 포함하여 구성될 수 있다. 나아가, 상기 컨택볼트는 상기 플랜지에 대향하는 상기 수나사부의 일단에 형성된 나사돌리개용 요홈을 더 포함할 수 있다.Here, the contact bolt may be screwed with the contact hole. Specifically, the contact bolt may include a disk-shaped flange having a pair of rotating holes disposed to face each other on a circumferential contact protrusion and an outer side; It may be configured to include; and a male screw portion having a diameter smaller than the diameter of the flange. The contact hole may include an accommodation groove in which the flange is accommodated; And a female screw portion screwed to the male screw portion. Furthermore, the contact bolt may further include a screwdriver recess formed in one end of the male screw portion facing the flange.
아울러, 상기 한쌍의 홀더 플레이트 각각의 내측면에는 상기 전지셀 어레이의 단부가수용되는 내삽부가 형성된 것이 바람직하다. 그리고, 상기 내삽부에는 복수의 전지셀들 사이의 간격을 유지하는 격자가 형성된 것이 더욱 바람직하다.In addition, it is preferable that the inner surface of each of the pair of holder plates is formed with an interpolation portion in which the end of the battery cell array is accommodated. Further, the interpolation portion is more preferably formed of a grating to maintain the interval between the plurality of battery cells.
상기 전지셀 어레이의 양단에 배치된 상기 한쌍의 홀더 플레이트를 상호 체결하는 홀더 플레이트 체결수단을 더 포함할 수 있다.A holder plate fastening means for fastening the pair of holder plates disposed at both ends of the battery cell array may be further included.
한편, 본 발명에 따른 전지셀 어셈블리는, 상기 한쌍의 홀더 플레이트 각각의 외측면에 배치되는 회로패널; 및 상기 회로패널 및 상기 홀더 플레이트의 외측면 사이에 개재되는 절연패널;을 더 포함할 수 있다.On the other hand, the battery cell assembly according to the present invention, the circuit panel disposed on the outer surface of each of the pair of holder plate; And an insulating panel interposed between the circuit panel and the outer surface of the holder plate.
또한, 상기 전지셀 어레이는 2 이상의 단위 어레이를 포함할 수 있고, 회로패널은 단위 어레이의 개수에 따라 구비되어, 각각의 회로패널은 해당 단위 어레이를 구성하는 다수의 전지셀에 각각 접속된 상기 컨택볼트와 전기적으로 접속될 수 있다.In addition, the battery cell array may include two or more unit arrays, and circuit panels are provided according to the number of unit arrays, and each circuit panel is connected to each of a plurality of battery cells constituting the unit array. It may be electrically connected to the bolt.
나아가, 본 발명에 따른 전지셀 어셈블리에 포함되는 홀더 플레이트의 일측에는 체결구가 형성될 수 있고, 이웃하는 전지셀 어셈블리의 대향하는 홀더 플레이트 사이에서 상기 체결구에 결속되는 지지체를 통해, 복수의 전지셀 어셈블리를 임의의 구조로 적층하여 구성할 수 있다.Furthermore, a fastener may be formed at one side of a holder plate included in the battery cell assembly according to the present invention, and a plurality of batteries may be formed through a support that is fastened to the fastener between opposing holder plates of a neighboring battery cell assembly. The cell assembly may be laminated by any structure.
본 발명은 다양한 변경을 가할 수 있고 여러 가지 실시예를 가질 수 있는 바, 특정 실시예들을 도면에 예시하고 이를 상세한 설명을 통해 상세히 설명하고자 한다. 그러나, 이는 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.The present invention may be modified in various ways and may have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.
본 발명을 설명함에 있어서, 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우, 그에 대한 상세한 설명을 생략한다. 또한, 본 명세서의 설명 과정에서 이용되는 숫자(예를 들어, 제1, 제2 등)는 하나의 구성요소를 다른 구성요소와 구분하기 위한 식별기호에 불과하다.In the following description of the present invention, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, numerals (eg, first, second, etc.) used in the description of the present specification are merely identification symbols for distinguishing one component from another component.
이하, 첨부된 도면들을 참조하여 본 발명의 실시를 위한 구체적인 내용을 설명하도록 한다.Hereinafter, with reference to the accompanying drawings to describe the specific content for the practice of the present invention.
먼저, 도 2에서 보듯이, 본 발명에 따른 전지셀 어셈블리(100)는, 복수개의 전지셀(112)을 포함하는 전지셀 어레이(110)와, 전지셀 어레이(110)의 양단에 각각 배치된 절기절연성 재질의 제1 홀더 플레이트(121) 및 제2 홀더 플레이트(122)를 포함하여 구성된다. 여기서, 전지셀(112)은 양단에 각각 (+)단자 및 (-)단자로 기능하는 전극단자(112a)가 마련된 원통형 전지로서, 도 2에서는 복수의 전지셀(112)이 5행 및 8열을 가진 어레이 구조로 배치된 예를 도시하였으나, 필요에 따라 다양한 개수의 행렬을 가진 어레이 구조로 배치될 수 있다.First, as shown in FIG. 2, the battery cell assembly 100 according to the present invention includes a battery cell array 110 including a plurality of battery cells 112 and disposed at both ends of the battery cell array 110, respectively. It comprises a first holder plate 121 and the second holder plate 122 of the seasonal insulating material. Here, the battery cell 112 is a cylindrical battery having electrode terminals 112a functioning as positive (+) terminals and negative (-) terminals, respectively, in FIG. 2. In FIG. 2, the plurality of battery cells 112 includes five rows and eight columns. Although the example is arranged in an array structure having a, it may be arranged in an array structure having a variable number of matrices as needed.
상술한 행렬 구조의 전지셀 어레이를 포함하는 전지셀 어셈블리는 이하에서 설명할 세부 구성요소들이 조립되어 제조된다. The battery cell assembly including the battery cell array having the matrix structure described above is manufactured by assembling detailed components to be described below.
도 3에서 보듯이, 복수의 전지셀(112)로 구성된 전지셀 어레이(110)의 양단에 제1 및 제2 홀더 플레이트(121, 122)가 배치된다.As shown in FIG. 3, first and second holder plates 121 and 122 are disposed at both ends of the battery cell array 110 including the plurality of battery cells 112.
제1 및 제2 홀더 플레이트(121, 122)는 전기절연성 재질, 예컨대 합성수지재를 이용하여 제조될 수 있다. 홀더 플레이트(121, 122)는 대략 전지셀 어레이(110)의 양단을 커버하는 치수를 가지며, 동일한 형상의 홀더 플레이트를 2개 1조로 하여 사용할 수도 있다. 각각의 홀더 플레이트(121, 122)가 전지셀 어레이(110)에 접하는 내측면에는 내삽부(130)가 형성될 수 있다. 내삽부(130)에는 홀더 플레이트(121, 122)의 내측면에서 전지셀 어레이(110)의 단부가 수용되는데, 원통형의 전지셀(112)로 구성된 어레이(110)의 측면 프로파일과 동일한 형상의 홈으로 형성되어 어레이(110)의 단부가 밀착 고정될 수 있다. 또한, 내삽부(130)에는 격자(131)가 형성될 수 있으며, 격자(131)에 의해 어레이(110)를 구성하는 각각의 전지셀(112)이 이웃하는 전지셀(112)과 일정한 간격을 유지하도록 함과 동시에, 각 전지셀(112)을 홀더 플레이트(121, 122)에 밀착 고정할 수 있다. 특히, 격자(131)에 의해 각 전지셀들(112) 사이에 빈 공간이 형성될 수 있으며, 이 공간에 의해 전지셀(112)에서 발생하는 열이 외부로 쉽게 방출될 수 있다.The first and second holder plates 121 and 122 may be manufactured using an electrically insulating material, for example, a synthetic resin material. The holder plates 121 and 122 have a dimension substantially covering both ends of the battery cell array 110, and may be used by using two sets of holder plates having the same shape. An interpolation portion 130 may be formed on an inner surface of each holder plate 121 and 122 in contact with the battery cell array 110. The end portion of the battery cell array 110 is accommodated in the inner surface of the holder plates 121 and 122 in the interpolation portion 130, and grooves having the same shape as the side profile of the array 110 formed of the cylindrical battery cells 112 are provided. Is formed in the end of the array 110 can be fixed tightly. In addition, a grating 131 may be formed in the interpolation part 130, and each battery cell 112 constituting the array 110 may have a predetermined distance from the neighboring battery cell 112 by the grating 131. At the same time, the battery cells 112 may be fixed to the holder plates 121 and 122. In particular, an empty space may be formed between the battery cells 112 by the lattice 131, and heat generated in the battery cells 112 may be easily released to the outside by the grid 131.
한편, 홀더 플레이트(121, 122)에는 개개의 전지셀(112) 각각에 마련된 전극단자(112a)에 대응하는 위치에 컨택홀(133)이 형성된다. 컨택홀(133)은 홀더 플레이트(121, 122)를 관통하여 형성된다. 그리고, 이 컨택홀(133)에는 전기전도성 재질로 형성된 컨택볼트(140)가 삽입된다.On the other hand, the contact plates 133 are formed in the holder plates 121 and 122 at positions corresponding to the electrode terminals 112a provided in the respective battery cells 112. The contact hole 133 is formed through the holder plates 121 and 122. In addition, a contact bolt 140 formed of an electrically conductive material is inserted into the contact hole 133.
컨택볼트(140)는, 일단이 전지셀(112)의 전극단자(112a)에 전기적으로 접촉되고, 타단이 컨택홀(133)을 관통하여 외측으로 돌출되게 배치된다. 그리고, 컨택볼트(140)는 컨택홀(133)과 나사 체결될 수 있다. 즉, 컨택볼트(140)와 컨택홀(133)이 나사 체결되어 있어서, 컨택볼트(140)를 일방향으로 회전시키면 컨택볼트(140)의 일면이 전극단자(112a) 측으로 접근하게 되고, 타방향으로 회전시키면 홀더 플레이트(121, 122)의 외측으로 돌출하게 된다. 즉, 컨택볼트(140)의 회전수를 조정하여 컨택볼트(140) 및 전극단자(112a) 사이의 접촉 거리를 정밀하게 조정할 수 있다.One end of the contact bolt 140 is electrically contacted with the electrode terminal 112a of the battery cell 112, and the other end thereof is disposed to protrude outward through the contact hole 133. The contact bolt 140 may be screwed into the contact hole 133. That is, since the contact bolt 140 and the contact hole 133 are screwed, when the contact bolt 140 is rotated in one direction, one surface of the contact bolt 140 approaches the electrode terminal 112a and the other direction. Rotating protrudes outward from the holder plates 121 and 122. That is, the contact distance between the contact bolt 140 and the electrode terminal 112a can be precisely adjusted by adjusting the rotation speed of the contact bolt 140.
도 4에서 보듯이, 컨택볼트(140)는, 원판형의 플랜지(141) 및 이 플랜지(141)의 직경보다 작은 직경을 가진 수나사부(144)로 구성될 수 있다. 그리고, 플랜지(141)에는 외측으로 돌출된 컨택돌기(142)가 형성되어, 컨택볼트(140)와 전극단자(112a) 사이의 접촉 신뢰성을 향상시킨다. 또한, 플랜지(141)의 원주상에는 서로 대향하게 배치된 한쌍의 회동구(143)가 형성된다. 회동구(143)는 컨택볼트(140)을 회전시키기 위한 수단으로서, 한쌍의 회동구(143)에 끼워지는 별도의 회전도구를 이용하여 컨택볼트(140)를 회전시킬 수 있다. 그리고, 플랜지(141)에 대향하는 수나사부(144)의 일단에는 나사돌리개용 요홈(145)이 형성될 수 있다. 요홈(145)은 다양한 형상으로 형성될 수 있으며, 한쌍의 회동구(143)의 반대측에서 컨택볼트(140)를 회전시키기 위한 수단으로, 나사돌리개로 사용되는 드라이버의 단부를 요홈(145)에 끼워맞춘 후 컨택볼트(140)를 회전시킬 수 있다. 한쌍의 회동구(143) 및 요홈(145)를 이용하여 각각 서로 반대측에서 컨택볼트(140)를 회전시킬 수 있다.As shown in FIG. 4, the contact bolt 140 may include a disk-shaped flange 141 and a male screw portion 144 having a diameter smaller than the diameter of the flange 141. In addition, a contact protrusion 142 protruding outward is formed in the flange 141 to improve contact reliability between the contact bolt 140 and the electrode terminal 112a. In addition, a pair of rotating holes 143 are arranged on the circumference of the flange 141 to face each other. Rotating hole 143 is a means for rotating the contact bolt 140, it is possible to rotate the contact bolt 140 by using a separate rotary tool fitted to the pair of rotating holes (143). Then, one end of the male screw portion 144 facing the flange 141 may be formed with a screwdriver groove 145. The groove 145 may be formed in various shapes. The groove 145 is a means for rotating the contact bolt 140 on the opposite side of the pair of turning holes 143. The end of the driver, which is used as a screwdriver, is inserted into the groove 145. After fitting, the contact bolt 140 may be rotated. Using a pair of rotating holes 143 and the groove 145, respectively, the contact bolt 140 can be rotated from the opposite side.
도 5를 참고하여, 전극단자(112a), 컨택볼트(140) 및 컨택홀(133)의 체결상태를 살펴보면, 홀더 플레이트(121, 122)의 내측면(121a, 122a) 측의 컨택홀(133) 영역에 플랜지(141)가 수용되는 수용홈(133a)이 마련되고, 컨택홀(133)의 내벽면에는 수나사부(144)와 나사 체결되는 암나사부(133b)가 형성된다. 컨택볼트(140)를 컨택홀(133)에 체결하면, 플랜지(141)가 수용홈(133a)에 내부에서 일정한 거리만큼 전진 및 후퇴할 수 있다. Referring to FIG. 5, when the electrode terminals 112a, the contact bolts 140, and the contact holes 133 are fastened, the contact holes 133 on the inner surfaces 121a and 122a of the holder plates 121 and 122 may be described. The receiving groove 133a in which the flange 141 is accommodated is provided in the) area, and the female screw part 133b is screwed to the male screw part 144 on the inner wall surface of the contact hole 133. When the contact bolt 140 is fastened to the contact hole 133, the flange 141 may be moved forward and backward by a predetermined distance in the accommodation groove 133a.
복수의 체결볼트(140)를 대응하는 컨택홀(133)에 각각 체결한 상태에서, 각 홀더 플레이트(121, 122)의 내삽부(130) 및 격자(131)의 위치에 각각의 전지셀(112)를 대응시켜 어레이(110)의 양 단부를 끼운다. 그 후, 대향하게 배치된 제1 홀더 플레이트(121) 및 제2 홀더 플레이트(122)를 체결수단(150)을 이용하여 견고하게 고정한다. 체결수단(150)은 대향하는 두개의 홀더 플레이트(121, 122)가 어레이(110)에 물리적으로 견고하게 고정하기 위한 수단으로서, 예컨대 렌치볼트(151) 및 너트(152)를 이용할 수 있다.In the state where the plurality of fastening bolts 140 are fastened to the corresponding contact holes 133, respectively, the respective battery cells 112 at the positions of the interpolation portion 130 and the lattice 131 of the holder plates 121 and 122. ) To fit both ends of the array (110). Thereafter, the first holder plate 121 and the second holder plate 122 which are disposed to face each other are firmly fixed using the fastening means 150. The fastening means 150 is a means for physically and firmly fixing two opposing holder plates 121 and 122 to the array 110, for example, a wrench bolt 151 and a nut 152 may be used.
한편, 어레이(110)의 단부가 홀더 플레이트(121, 122)의 내측면에 밀착될 때, 개개의 전지셀(112)의 높이 차이에 따라 특정 전지셀(112)의 전극단자(112a)와 컨택볼트(140) 사이에 유격이 발생할 수 있다. 홀더 플레이트(121, 122) 및 어레이(110)를 조립한 이후, 컨택볼트(140)를 회전시켜 각 전지셀(112)과의 접촉을 정밀하게 조정할 수 있다. 이때, 요홈(145)을 이용하여 플랜지(141) 및 컨택돌기(142)가 대응하는 전극단자(112a)에 밀착될 수 있도록 컨택볼트(140)를 회전시킨다. 각 전지셀(112)의 양극 단자 사이의 전압을 측정하면, 개개의 컨택볼트(140) 및 전지셀(112) 사이의 접속 상태를 확인할 수 있다.On the other hand, when the end of the array 110 is in close contact with the inner surface of the holder plate (121, 122), the contact with the electrode terminal 112a of the specific battery cell 112 in accordance with the height difference of the individual battery cells 112 Gaps may occur between the bolts 140. After assembling the holder plates 121 and 122 and the array 110, the contact bolt 140 may be rotated to precisely adjust the contact with each battery cell 112. At this time, the contact bolt 140 is rotated so that the flange 141 and the contact protrusion 142 may be in close contact with the corresponding electrode terminal 112a by using the recess 145. When the voltage between the positive terminal of each battery cell 112 is measured, the connection state between each contact bolt 140 and the battery cell 112 can be confirmed.
이와 같이 조립된 전지셀 어셈블리(100)는, 각 홀더 플레이트(121, 122)가 어레이(110)에 밀착 고정된 상태가 되고, 컨택볼트(140)의 일단이 컨택홀(133)을 관통하여 외부로 노출된 상태가 된다. 노출된 컨택볼트(140)에는 단위 어레이를 구성하는 다수의 전지셀(112)을 서로 병렬 접속하는 회로패널(160)가 체결된다. 이때, 홀더 플레이트(121, 122)의 외측면에 배치되는 회로패널(160)에는 컨택볼트(140)의 일단이 관통되는 다수의 개구(161)가 마련된다. 병렬접속하고자 하는 전지셀(112)에 대응하는 컨택볼트(140)는 회로패널(160)에 형성된 개구(161)을 통해 단부가 노출되며, 노출된 컨택볼트(140)의 단부는 와셔(146) 및 너트(147)를 통해 회로패널(160)과 전기적으로 접속될 수 있다.In the battery cell assembly 100 assembled as described above, the holder plates 121 and 122 are brought into tight contact with the array 110, and one end of the contact bolt 140 penetrates through the contact hole 133. Will be exposed. The exposed contact bolt 140 is fastened to the circuit panel 160 connecting the plurality of battery cells 112 constituting the unit array in parallel with each other. In this case, a plurality of openings 161 through which one end of the contact bolt 140 penetrates is provided in the circuit panel 160 disposed on the outer surfaces of the holder plates 121 and 122. An end of the contact bolt 140 corresponding to the battery cell 112 to be connected in parallel is exposed through an opening 161 formed in the circuit panel 160, and an end of the exposed contact bolt 140 is a washer 146. And a nut 147 to be electrically connected to the circuit panel 160.
상술한 구조의 전지셀 어셈블리(100)에 사용되는 회로패널(160)은 종래의 용접방식으로 제조된 전지모듈과 달리 전기전도도가 우수한 구리패널을 이용하여 제조될 수 있다. 종래에는 단위 전지셀의 전극단자를 용접방식에 의해 버스바와 접속해야 했기 때문에, 구리패널을 이용할 수 없었다. 그러나, 본 발명에 따른 전지셀 어셈블리는 용접방식을 이용하지 않으므로 전기전도도가 우수한 구리패널을 사용하는 것이 가능하다. 구리를 이용하여 회로패널을 구성하면 전지셀 어셈블리의 내부 저항을 최소화할 수 있으며, 전지모듈의 전기적 용량의 안정화에 효과적이다. 또한, 전지셀의 발열에 의해 컨택볼트 및 회로패널 사이의 접촉이 단선될 위험이 없으며, 외부 충격에도 전기적 접속 신뢰성을 확보할 수 있다. 또한, 개개의 전지셀과 컨택볼트의 접촉 상태는 조립후 혹은 사용중에도 용이하게 확인할 수 있다. 본 발명에 따른 전지셀 어셈블리는 개개의 전지셀, 컨택볼트 및 회로패널이 기계적으로 조립되어 있으므로, 특정 전지셀에 불량이 발생한 경우 해당 전지셀을 교체하는 것이 비교적 간편하다. 종래와 달리 사용 중에 전지모듈에 불량이 발생한 경우 제품의 수리가 용이하므로, 전체적인 제조비용 뿐만 아니라 고객 서비스 비용이 대폭 절감될 수 있다.The circuit panel 160 used in the battery cell assembly 100 having the above-described structure may be manufactured using a copper panel having excellent electrical conductivity unlike a battery module manufactured by a conventional welding method. In the related art, the electrode terminals of the unit battery cells had to be connected to the busbars by the welding method, and thus copper panels could not be used. However, since the battery cell assembly according to the present invention does not use a welding method, it is possible to use a copper panel having excellent electrical conductivity. By constructing the circuit panel using copper, the internal resistance of the battery cell assembly can be minimized and it is effective to stabilize the electrical capacity of the battery module. In addition, there is no risk of disconnection between the contact bolt and the circuit panel due to the heat generation of the battery cell, and it is possible to secure electrical connection reliability against external impact. In addition, the contact state of each battery cell and the contact bolt can be easily confirmed after assembling or in use. In the battery cell assembly according to the present invention, since the individual battery cells, the contact bolts and the circuit panel are mechanically assembled, it is relatively easy to replace the battery cells when a defect occurs in a specific battery cell. Unlike in the prior art, if a defect occurs in the battery module during use, since the repair of the product is easy, not only the overall manufacturing cost but also customer service costs can be greatly reduced.
한편, 전지모듈의 사용 중에 전지셀에서 발생되는 발열현상에 의해 금속재인 회로패널로 인하여 합성수지재인 홀더 플레이트가 변형되거나 녹을 수 있다. 이러한 문제를 해결하기 위하여, 회로패널(160) 및 홀더 플레이트(121, 122)의 외측면 사이에 절연패널(170)이 개재될 수 있다. 또한, 절연패널(170)은 회로패널(160)을 주변 영역과 전기적으로 분리할 뿐만 아니라, 회로패널(160)에서 발생되는 열을 외부와 차단하는 기능을 수행한다. 절연패널(170) 및 회로패널(160)은 도 3에서와 같이 별도의 부재로 마련될 수도 있고, 하나의 절연기재(절연패널) 상에 소정의 회로 패턴(회로패널)이 일체로 형성된 하나의 기판을 이용할 수도 있다.On the other hand, due to the heat generation phenomenon generated in the battery cell during use of the battery module due to the metal circuit panel holder plate may be deformed or melted. In order to solve this problem, an insulating panel 170 may be interposed between the circuit panel 160 and the outer surfaces of the holder plates 121 and 122. In addition, the insulating panel 170 electrically separates the circuit panel 160 from the peripheral area and serves to block heat generated from the circuit panel 160 from the outside. The insulating panel 170 and the circuit panel 160 may be provided as separate members as shown in FIG. 3, and a single circuit pattern (circuit panel) is integrally formed on one insulating substrate (insulating panel). A substrate can also be used.
또한, 도 2 및 도 3에서는 전체 전지셀 어레이가 하나의 단위 어레이로 구성되어, 복수의 전지셀이 서로 병렬 접속된 예를 도시하였다. 그러나, 본 발명에 따른 전지셀 어셈블리를 이용하면, 복수의 전지셀을 여러개의 단위 어레이로 구분하여 접속하는 것이 용이하다. 즉, 도 6에는 4행 4열의 어레이를 각각 2행 4열을 가진 2개의 단위 어레이로 구분한 예를 도시하였다. 여기서, 각 단위 어레이를 구성하는 전지셀들은 제1 회로패널(160a) 및 제2 회로패널(160b)에 의해 각각 병렬 접속된다. 즉, 제1 회로패널(160a)에는 대응하는 단위 어레이를 구성하는 다수의 전지셀에 각각 접속된 컨택볼트들(140a)이 전기적으로 접속되고, 제2 회로패널(160b)에는 대응하는 단위 어레이를 구성하는 다수의 전지셀에 각각 접속된 컨택볼트들(140b)이 전기적으로 접속된다. 도 6에 도시한 예는, 본 발명에 따른 전지셀 어셈블리를 이용하여 다양한 방식으로 회로 구성을 할 수 있음을 보여주는 예시적인 실시예로서, 이외에도 하나의 전지모듈 내에서도 단위 어레이를 다양하게 구성할 수 있다.2 and 3 illustrate an example in which an entire battery cell array is configured as one unit array, and a plurality of battery cells are connected in parallel to each other. However, by using the battery cell assembly according to the present invention, it is easy to divide and connect a plurality of battery cells into a plurality of unit arrays. That is, FIG. 6 shows an example of dividing an array of four rows and four columns into two unit arrays each having two rows and four columns. Here, the battery cells constituting each unit array are connected in parallel by the first circuit panel 160a and the second circuit panel 160b, respectively. That is, contact bolts 140a connected to a plurality of battery cells constituting a corresponding unit array are electrically connected to the first circuit panel 160a, and a corresponding unit array is connected to the second circuit panel 160b. Contact bolts 140b respectively connected to a plurality of battery cells constituting the same are electrically connected to each other. 6 is an exemplary embodiment showing that the circuit can be configured in various ways using the battery cell assembly according to the present invention. In addition, the unit array may be variously configured within one battery module. .
도 2에 예시한 전지셀 어셈블리(100)를 복수개로 구비하여 적층된 구조체로 제조될 수도 있다. 예컨대, 도 7에서 보듯이, 네개의 전지셀 어셈블리(100a 내지 100d)는, 각각 홀더 플레이트(121, 122)의 일측에 마련된 체결구(180) 및 지지체(181)를 이용하여 적층될 수 있다. 지지체(181)는 이웃하는 전지셀 어셈블리 사이에서 서로 마주보는 각 홀더 플레이트(121, 122) 사이에서 체결구(180)에 결속된다. 체결구(180) 및 지지체(181)는 각각 내부에 관통공이 마련될 수 있으며, 이 관통공들을 경유하여 소정의 볼트 및 너트를 체결함으로써 이웃하는 전지셀 어셈블리들을 기계적으로 결속할 수 있다. 또한, 이웃하는 전지셀 어셈블리는 각각에 마련된 회로패널 및 체결볼트 사이에 끼워지는 바링크(182)를 통해 전기적으로 연결될 수 있다. 따라서, 본 발명에 따른 전지셀 어셈블리를 이용하면, 원통형 전지를 적용하는 경우에도 다양한 적층 구조의 전지모듈을 설계하는 것이 매우 용이하다.The battery cell assembly 100 illustrated in FIG. 2 may be provided as a plurality of stacked structures. For example, as shown in FIG. 7, the four battery cell assemblies 100a to 100d may be stacked using fasteners 180 and a support 181 provided at one side of the holder plates 121 and 122, respectively. The support 181 is coupled to the fastener 180 between each holder plate 121 and 122 facing each other between neighboring battery cell assemblies. The fastener 180 and the support 181 may be provided with a through hole therein, respectively, and may fasten a predetermined bolt and nut through these through holes to mechanically bind neighboring battery cell assemblies. In addition, the neighboring battery cell assembly may be electrically connected through a bar link 182 that is fitted between the circuit panel and the fastening bolt provided in each. Therefore, when the battery cell assembly according to the present invention is used, it is very easy to design a battery module having various laminated structures even when a cylindrical battery is applied.
지금까지 본 발명의 바람직한 실시예에 대해 설명하였으나, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 본 발명의 본질적인 특성을 벗어나지 않는 범위 내에서 변형된 형태로 구현할 수 있을 것이다. 그러므로 여기서 설명한 본 발명의 실시예는 한정적인 관점이 아니라 설명적인 관점에서 고려되어야 하고, 본 발명의 범위는 상술한 설명이 아니라 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함되는 것으로 해석되어야 한다.While the preferred embodiments of the present invention have been described so far, those skilled in the art may implement the present invention in a modified form without departing from the essential characteristics of the present invention. Therefore, the embodiments of the present invention described herein are to be considered in descriptive sense only and not for purposes of limitation, and the scope of the present invention is shown in the appended claims rather than the foregoing description, and all differences within the scope are equivalent to the present invention. Should be interpreted as being included in

Claims (10)

  1. 양단에 각각 전극단자가 마련된 원통형의 전지셀이 복수개로 구성된 전지셀 어레이;A battery cell array including a plurality of cylindrical battery cells each having electrode terminals at both ends thereof;
    상기 전지셀 어레이 양단에 각각 배치되고, 상기 전지셀 각각의 상기 전극단자에 대응하는 위치에 컨택홀이 형성되며, 전기절연성 재질로 형성된 한쌍의 홀더 플레이트; 및A pair of holder plates disposed at both ends of the battery cell array, contact holes are formed at positions corresponding to the electrode terminals of each of the battery cells, and formed of an electrically insulating material; And
    일단이 상기 전지셀 각각의 전극단자에 전기적으로 접촉되고, 타단이 상기 컨택홀을 관통하여 외측으로 돌출되게 배치되며, 전기전도성 재질로 형성된 컨택볼트;를 포함하는, 전지셀 어셈블리.And a contact bolt having one end electrically contacting an electrode terminal of each of the battery cells and the other end protruding outwardly through the contact hole and formed of an electrically conductive material.
  2. 제 1 항에 있어서,The method of claim 1,
    상기 컨택볼트는 상기 컨택홀의 내벽면과 나사 체결된 것을 특징으로 하는, 전지셀 어셈블리.The contact bolt is a battery cell assembly, characterized in that the screw fastened with the inner wall surface of the contact hole.
  3. 제 1 항에 있어서,The method of claim 1,
    상기 컨택볼트는, 외측으로 돌출된 컨택돌기 및 원주상에 서로 대향하게 배치된 한쌍의 회동구가 형성된 원판형의 플랜지; 및 상기 플랜지의 직경보다 작은 직경을 가진 수나사부;를 포함하고,The contact bolt may include a disk-shaped flange having a pair of rotating holes disposed to face each other on a circumference and a contact protrusion protruding outward; And a male screw part having a diameter smaller than the diameter of the flange.
    상기 컨택홀은, 상기 플랜지가 수용되는 수용홈; 및 상기 수나사부와 나사 체결되는 암나사부;를 포함하는 것을 특징으로 하는, 전지셀 어셈블리.The contact hole may include an accommodation groove in which the flange is accommodated; And a female screw portion screwed to the male screw portion.
  4. 제 3 항에 있어서,The method of claim 3, wherein
    상기 컨택볼트는 상기 플랜지에 대향하는 상기 수나사부의 일단에 형성된 나사돌리개용 요홈을 더 포함하는 것을 특징으로 하는, 전지셀 어셈블리.The contact bolt further comprises a screwdriver groove formed in one end of the male screw portion facing the flange, the battery cell assembly.
  5. 제 1 항에 있어서,The method of claim 1,
    상기 한쌍의 홀더 플레이트 각각의 내측면에는 상기 전지셀 어레이의 단부가수용되는 내삽부가 형성된 것을 특징으로 하는, 전지셀 어셈블리.The inner surface of each of the pair of holder plate, characterized in that the battery cell assembly, characterized in that the end portion of the battery cell array is accommodated.
  6. 제 5 항에 있어서,The method of claim 5, wherein
    상기 내삽부에는 복수의 전지셀들 사이의 간격을 유지하는 격자가 형성된 것을 특징으로 하는, 전지셀 어셈블리.The interpolation portion is characterized in that the grating is formed to maintain the gap between the plurality of battery cells, the battery cell assembly.
  7. 제 1 항에 있어서,The method of claim 1,
    상기 전지셀 어레이의 양단에 배치된 상기 한쌍의 홀더 플레이트를 상호 체결하는 홀더 플레이트 체결수단을 더 포함하는, 전지셀 어셈블리.And a holder plate fastening means for fastening the pair of holder plates disposed at both ends of the battery cell array to each other.
  8. 제 1 항에 있어서,The method of claim 1,
    상기 한쌍의 홀더 플레이트 각각의 외측면에 배치되는 회로패널; 및A circuit panel disposed on an outer surface of each of the pair of holder plates; And
    상기 회로패널 및 상기 홀더 플레이트의 외측면 사이에 개재되는 절연패널;을 더 포함하는, 전지셀 어셈블리.And an insulating panel interposed between the circuit panel and an outer surface of the holder plate.
  9. 제 1 항에 있어서,The method of claim 1,
    상기 전지셀 어레이는 2 이상의 단위 어레이를 포함하고,The battery cell array includes two or more unit arrays,
    상기 단위 어레이를 구성하는 다수의 전지셀에 각각 접속된 상기 컨택볼트와전기적으로 접속되는 회로패널을 포함하는 것을 특징으로 하는, 전지셀 어셈블리.And a circuit panel electrically connected to the contact bolts respectively connected to a plurality of battery cells constituting the unit array.
  10. 제 1 항에 있어서,The method of claim 1,
    상기 홀더 플레이트의 일측에 마련된 체결구; 및 이웃하는 전지셀 어셈블리의 대향하는 홀더 플레이트 사이에서 상기 체결구에 결속되는 지지체;를 더 포함하는 것을 특징으로 하는, 전지셀 어셈블리.Fasteners provided on one side of the holder plate; And a support coupled to the fastener between opposing holder plates of a neighboring battery cell assembly.
PCT/KR2018/012102 2018-08-02 2018-10-15 Battery cell assembly WO2020027373A1 (en)

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