WO2020175883A1 - 충격 흡수 구조를 갖는 커넥터를 포함하는 전지 모듈 - Google Patents

충격 흡수 구조를 갖는 커넥터를 포함하는 전지 모듈 Download PDF

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Publication number
WO2020175883A1
WO2020175883A1 PCT/KR2020/002683 KR2020002683W WO2020175883A1 WO 2020175883 A1 WO2020175883 A1 WO 2020175883A1 KR 2020002683 W KR2020002683 W KR 2020002683W WO 2020175883 A1 WO2020175883 A1 WO 2020175883A1
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WO
WIPO (PCT)
Prior art keywords
module
battery
connector
battery module
mounting surface
Prior art date
Application number
PCT/KR2020/002683
Other languages
English (en)
French (fr)
Inventor
이백산
성준엽
오종렬
권희용
Original Assignee
주식회사 엘지화학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to EP20762754.8A priority Critical patent/EP3780287A4/en
Priority to US17/265,955 priority patent/US20210296725A1/en
Priority to CN202080002920.0A priority patent/CN112219319B/zh
Priority to JP2020560829A priority patent/JP7055487B2/ja
Publication of WO2020175883A1 publication Critical patent/WO2020175883A1/ko

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • 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

  • This invention relates to a battery module, and more specifically, to a battery module equipped with a module connector that is connected to an external connector.
  • secondary batteries have high applicability according to product groups and have electrical characteristics such as high energy density, they are widely applied not only to portable devices, but also to electric vehicles or hybrid vehicles driven by electric drive sources, power storage devices, etc. These secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency in that they do not generate any by-products from the use of energy, as well as the primary advantage of being able to drastically reduce the use of fossil fuels.
  • the battery pack applied to the above electric vehicle has a structure in which a plurality of cell assemblies including a plurality of unit cells are connected in series in order to obtain high output.
  • the unit cell includes a positive and negative electrode collector, a separator, and a battery. Repetitive charging and discharging is possible by electrochemical reactions between components including active materials and electrolytes.
  • the battery module packs battery cells and various electronic components in a module case, and has a module connector that connects to an external connector for electrical connection with external devices outside the module case.
  • External connectors are an example, and a plurality of external connectors are provided. It may be a connector for electrically connecting two battery modules.
  • the module connector provided in the existing battery module is firmly fixed to the module case, so that the battery module or a battery pack, which is an assembly thereof, is exposed to vibration or shock.
  • 2020/175883 1»(:1/10 ⁇ 020/002683 When it is mounted on an easy car, etc., and when it is driven by vibration or shock from the outside, there is a risk of damage due to not being able to withstand the load.
  • the task to be solved by the present invention is to provide a battery module equipped with a module connector that provides elasticity capable of absorbing vibration or shock from the outside.
  • the problems to be solved by the embodiments of the present invention are not limited to the above-described problems and may be variously expanded within the scope of the technical idea included in the present invention.
  • a battery module including at least one battery cell, a module case accommodating the cell assembly, and a mounting surface from the outside of the module case, and the cell assembly and It is electrically connected and includes a module connector to be connected to an external connector from the outside of the module case.
  • the module connector includes: a main body connected to a terminal connected to the battery cell, and the module facing the mounting surface of the module case. It may include a fastening portion configured to have elasticity on one side of the body portion.
  • the fastening portion of the module connector may be configured to provide an elastic force in a first direction parallel to the mounting surface or a second direction perpendicular to the mounting surface.
  • the fastening portion of the module connector may have a portion spaced apart from each other with an interval to form an empty space between it and the upper body portion.
  • the fastening portion of the module connector may include at least a pair of elastic supports that are bent convexly outward.
  • the pair of elastic supports is 91 in the third direction perpendicular to the first and second directions.
  • the oval shape may have a width in the first direction greater than a width in the second direction.
  • the width of the pair of elastic supports separated in the first direction may be equal to or smaller than the entire width of the upper body part measured in the first direction.
  • the module connector further includes a mounting end fastened to the mounting surface, and the pair of elastic supports may be extended in a direction away from the upper body portion to be connected to the mounting end at the end.
  • the mounting end may be mounted on the mounting surface in a sliding insert structure.
  • the fastening portion of the module connector may be molded from a resin material.
  • a battery pack including the at least one battery module and a pack case for packaging the at least one battery module may be provided.
  • a device including at least one battery pack may be provided.
  • FIG. 1 is a perspective view showing a battery module according to an embodiment of the present invention.
  • FIG. 2 shows a module connector mounted on the battery module according to an embodiment of the present invention
  • FIG. 3 is a plan view of the module connector shown in FIG. 2;
  • FIG. 4 is a module connector is mounted in the battery module according to an embodiment of the present invention
  • FIG. 5 is a battery module according to an embodiment of the present invention, the module connector is mounted
  • FIG. 6 is a perspective view showing a connector mounted on a battery module of a comparative example.
  • FIG. 1 is a perspective view showing a battery module according to an embodiment of the present invention.
  • the battery module 10 includes a module connector 130 mounted on the outside of the module case 150 for accommodating the cell assembly 100 therein.
  • the battery cells constituting 100 may be prepared as a pouch-type secondary battery, and may be stacked and arranged in plurality in the cell assembly W0.
  • the plurality of battery cells may be electrically connected to each other, and each of the battery cells is an electrode. It may include a battery case accommodating the assembly wire, and an electrode lead protruding outside the battery case and electrically connected to the electrode assembly.
  • the battery module 10 can include various electronic components, for example ICB (Internal Circuit Board) or BMS (Battery Management System). Electronic components such as ICB and BMS boards can be electrically connected to the plurality of battery cells.
  • ICB Internal Circuit Board
  • BMS Battery Management System
  • the module case 150 forms the exterior of the battery module 10 and is a cell accommodated inside
  • the bus bar assembly may be coupled to at least one side or both sides of the cell assembly W0 positioned in the direction in which the electrode leads of the assembly W0 extend, and the insulating frame 160 may be coupled to the other side.
  • the bus bar frame may include a bus bar frame disposed to cover the assembly 100 and a bus bar fixed to the bus bar frame.
  • the bus bar frame is made of an insulator and includes a lead slot through which the electrode leads of the cell assembly W0 can pass. , The bus bar can electrically connect the electrode leads of the cell assembly 100.
  • the module connector 130 can be coupled to a bus bar assembly, in particular a bus bar frame.
  • a mounting surface can be formed on the bus bar frame, and the module connector 130 can be seated on the mounting surface to be combined.
  • the module connector 130 and the mounting surface are slid together to have a fastening structure to be inserted, and a sliding groove is provided on one side. And a sliding protrusion may be formed on the other side.
  • the battery module 10 to sense the battery cells inside the module case 150
  • a configured flexible printed circuit board may be included, and such a flexible printed circuit board has a terminal connected to its terminal, and the terminal is exposed to the outside of the module case 150 and connected to the module connector 130. Therefore, the module connector 130 can be electrically connected to the cell assembly 100 through the flexible printed circuit board.
  • FPC flexible printed circuit board
  • FIG. 2 shows a connector mounted on a battery module according to an embodiment of the present invention
  • FIG. 3 is a plan view of the connector shown in FIG. 2.
  • the module connector 130 of the present embodiment includes a body portion 131 connected to the terminal and a fastening portion 135 used for mounting on the outside of the module case 150.
  • the terminal is electrically connected to the battery cells through the flexible printed circuit board, and the flexible printed circuit board can be connected to the terminal through the terminal part. Accordingly, the module connector 130 transmits electrical and thermal data of each battery cell to the BMS. It can be transmitted to the same measurement and controller.
  • the fastening part 135 of the module connector 130 faces the mounting surface of the module case 150.
  • the fastening portion 135 may be configured to provide elastic force in a first direction parallel to the mounting surface (X-axis direction) or a second direction perpendicular to the mounting surface (y-axis direction). Therefore, the module connector ( 130) Depending on the installed environmental conditions, the X-axis direction or the y-axis
  • the fastening part 135 forms an empty space (3 ⁇ 4) between the body part 131 and the at this time, the fastening part 135 may include a pair of elastic supports (135-135 ratio) that are convex outward on both sides, and the elastic support (135-135 ratio) is extended in a direction away from the body part 131.
  • the mounting end 135 is connected at a portion opposite to the body portion 131. This mounting end 135 may have a rail groove and a receiving space so as to be slidably coupled to the mounting surface, as shown in FIG. 2.
  • It can be formed larger than the width in the X-axis direction.
  • the width of the body part 131 may be equal to or smaller than the width of the body part 131.
  • the maximum width of the pair of elastic supports (135 ⁇ 135 ratio) measured in the X-axis direction when in the normal state is the body part (131 ) May be less than or equal to the total width of the elastic support (135 135) of the fastening part 135 even if a load in the X-axis direction or the X-axis direction is applied to the module connector 130. It can be prevented from being projected out of the area set by the edge and interfering with the surrounding components.
  • the fastening part 135 of the module connector 130 as described above is molded from a resin material.
  • mounting end (135 B and mounting end (135 can be integrally formed through mold molding
  • the fastening part 135 may be formed integrally with the body part 131.
  • the module connector is mounted
  • FIG. 5 is a partial front view showing an enlarged state in which a module connector is mounted in a battery module according to an embodiment of the present invention.
  • the module connector 130 has the main body 131 facing outward.
  • the fastening part 135 is aligned to face the module case 150 in which the cell assembly is embedded, and can be slidably coupled to the mounting surface 142 provided on the bus bar assembly. Referring to FIG. 5, an empty space (3/4) is formed. It can be seen that the fastening part 135 of the module connector 130 is in contact with the module case 150. Therefore, the fastening part 135 of the module connector 130 is divided in a direction perpendicular to the main surface of the insulating frame 160. Direction), or vibration or impact applied in a direction perpendicular to the ground (or battery module seating surface) while parallel to the main surface of the insulating frame 160 (X-axis direction).
  • a structure in which the elastic support of the fastening portion 135 constituting the module connector 130 is formed in a plurality of pairs can be applied.
  • a plurality of elastic supports are provided on both left and right sides, and these elastic supports are convex outwardly from both sides and bent to each other to form an elastic structure.
  • FIG. 6 is a perspective view showing a module connector mounted on a battery module according to a comparative example.
  • the module connector 30 shown in Fig. 6 has a terminal electrically connected to the battery cell.
  • It includes a fastening portion 34 extending from one side of the body portion 32 to be connected.
  • the fastening part 34 is composed of a plurality of pins so as to be rigidly fixed to the mounting surface provided on the outside of the module case, and since such a plurality of pins are fixed in clusters, it is difficult to provide elasticity. Therefore, the module according to the present embodiment Unlike the fastening part of the connector, if it is affected by external vibration or shock, the fastening part 34 may be damaged or irreversibly deformed because such vibration or shock cannot be absorbed.
  • one or more of the battery modules may be packaged in a pack case to form a battery pack.
  • the above-described battery module and battery pack including the same can be applied to various devices. These devices can be applied to transportation means such as electric bicycles, electric vehicles, and hybrid vehicles, but the present invention is not limited thereto. It can be applied to a variety of devices that can use the battery pack including this, and this is also within the scope of the rights of the present invention.
  • module connector 131 main body
  • module case 160 insulation frame

Landscapes

  • 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

본 기재의 전지 모듈은, 적어도 하나의 전지 셀을 포함하는 셀 조립체, 상기 셀 조립체를 수용하는 모듈 케이스, 및 상기 모듈 케이스 외측에서 장착면에 장착되고, 상기 셀 조립체와 전기적으로 연결되며, 상기 모듈 케이스 외부에서 외부 커넥터와 연결되기 위한 모듈 커넥터를 포함한다. 상기 모듈 커넥터는, 상기 전지 셀과 연결된 터미널과 접속하는 본체부, 및 상기 모듈 케이스의 장착면과 대면하는 상기 본체부의 일측에 탄성을 갖도록 구성되는 체결부를 포함할 수 있다.

Description

2020/175883 1»（：1/10公020/002683 명세서
발명의 명칭:충격흡수구조를갖는커넥터를포함하는전지모듈 기술분야
[1] 과字!츰워（들'）과의상호이용
四 본출원은 2019년 02월 26일자한국특허출원제 10-2019-0022기 8호에기초한 우선권의이익을주장하며,해당한국특허출원의문헌에개시된모든내용은 본명세서의일부로서포함된다.
[3] 본발명은전지모듈에관한것으로,보다구체적으로외부커넥터와연결되는 모듈커넥터가장착되는전지모듈에관한것이다.
배경기술
[4] 이차전지는제품군에따른적용용이성이높고,높은에너지밀도등의전기적 특성을가지기때문에,휴대용기기뿐만아니라전기적구동원에의해구동하는 전기자동차또는하이브리드자동차,전력저장장치등에보편적으로응용되고 있다.이러한이차전지는화석연료의사용을획기적으로감소시킬수있다는 일차적인장점뿐만아니라에너지의사용에따른부산물이전혀발생되지 않는다는점에서친환경및에너지효율성제고를위한새로운에너지원으로 주목받고있다.
[5] 상기전기자동차등에적용되는전지팩은고출력을얻기위해복수의단위 셀을포함하는다수의셀조립체를직렬로연결한구조를가지고있다.그리고 상기단위셀은양극및음극집전체,세퍼레이터,활물질,전해액등을포함하여 구성요소들간의전기화학적반응에의하여반복적인충방전이가능하다.
[6] 한편,근래에너지저장원으로서의활용을비롯하여대용량구조에대한
필요성이높아지면서다수의이차전지가직렬및/또는병렬로연결된다수의 전지모듈을집합시킨멀티모듈구조의전지팩에대한수요가증가하고있다.
[刀 복수개의전지셀을직렬/병렬로연결하여전지팩을구성하는경우,적어도 하나의전지셀로이루어지는전지모듈을먼저구성하고,이러한적어도하나의 전지모듈을이용하여기타구성요소를추가하여전지팩을구성하는방법이 일반적이다.상기전지팩에포함되는전지모듈의개수,또는전지모듈에 포함되는전지셀의개수는요구되는출력전압또는충방전용량에따라 다양하게설정될수있다.
[8] 전지모듈은전지셀들과각종전장부품등을모듈케이스내에패키징하며 , 모듈케이스밖의외부기기등과전기적인연결을위한외부커넥터와연결되는 모듈커넥터를구비한다.외부커넥터는일례로,복수개의전지모듈들을 전기적으로연결시키기위한커넥터일수있다.
[9] 기존의전지모듈에구비되는모듈커넥터는모듈케이스에단단히고정되어 있어서,전지모듈또는이들의집합체인전지팩이진동이나충격에노출되기 2020/175883 1»（：1/10公020/002683 쉬운자동차등에장착되어구동될때,외부로부터진동이나충격을받는경우 하중을견디지못하여파손될우려가있었다.
발명의상세한설명
기술적과제
본발명이해결하고자하는과제는,외부로부터의진동이나충격을흡수할수 있는탄성력을제공하는모듈커넥터를구비한전지모듈을제공하는것이다. 그러나,본발명의실시예들이해결하고자하는과제는상술한과제에 한정되지않고본발명에포함된기술적사상의범위에서다양하게확장될수 있다.
과제해결수단
2] 본발명의일실시예에따른전지모듈은,적어도하나의전지셀을포함하는셀 조립체,상기셀조립체를수용하는모듈케이스,및상기모듈케이스외측에서 장착면에장착되고,상기셀조립체와전기적으로연결되며 ,상기모듈케이스 외부에서외부커넥터와연결되기위한모듈커넥터를포함한다.상기모듈 커넥터는,상기전지셀과연결된터미널과접속하는본체부,및상기모듈 케이스의장착면과대면하는상기본체부의일측에탄성을갖도록구성되는 체결부를포함할수있다.
상기모듈커넥터의체결부는상기장착면에평행한제 1방향또는상기 장착면에수직한제 2방향으로의탄성력을제공하도록구성될수있다.
상기모듈커넥터의체결부는상기본체부와의사이에빈공간을형성하도록 간격을두고이격된부분을가질수있다.
상기모듈커넥터의체결부는바깥으로볼록하게굽어진적어도한쌍의탄성 지지체를포함할수있다.
]]]]] ]]]
47023561 상기한쌍의탄성지지체는상기제 1방향및제 2방향에수직한제 3방향에서91
볼때타원형을이룰수있다.
상기타원형은상기제 1방향으로의폭이상기제 2방향으로의폭보다더크게 형성될수있다.
8] 상기한쌍의탄성지지체의상기제 1방향으로이격된폭은상기제 1방향으로 측정한상기본체부의전체폭과같거나작을수있다.
상기모듈커넥터는상기장착면에체결되는장착단을더포함하고,상기한 쌍의탄성지지체는상기본체부로부터멀어지는방향으로연장되어단부에서 상기장착단과연결될수있다.
상기장착단은상기장착면에슬라이딩삽입구조로장착될수있다.
상기모듈커넥터의체결부는수지재료로몰드성형될수있다.
본발명의다른일실시예에따르면,상기적어도하나의전지모듈,및상기 적어도하나의전지모듈을패키징하는팩케이스를포함하는전지팩이제공될 수있다. [23] 본발명의또다른일실시예에따르면,상기적어도하나의전지팩을포함하는 디바이스가제공될수있다.
발명의효과
[24] 실시예에따르면,전지모듈에서모듈커넥터가체결되는부분에탄성력을 제공하는구조를마련함으로써상기전지모듈이장착된디바이스의
외부로부터진동이나충격이전달되더라도이를흡수할수있다.
[25] 나아가이와같은진동이나충격흡수구조를모듈커넥터의체결부에
마련함으로써모듈커넥터접속부위가느슨해지거나파손되는것을방지할수 있는효과가있다.
도면의간단한설명
[26] 도 1은본발명의일실시예에따른전지모듈을나타내는사시도이다.
[27] 도 2는본발명의일실시예에따른전지모듈에장착되는모듈커넥터를
도시한사시도이다.
[28] 도 3은도 2에나타낸모듈커넥터의평면도이다.
[29] 도 4는본발명의일실시예에따른전지모듈에서모듈커넥터가장착된
상태를확대하여도시한부분사시도이다.
[3이 도 5는본발명의일실시예에따른전지모듈에서모듈커넥터가장착된
상태를확대하여도시한부분정면도이다.
[31] 도 6은비교예의전지모듈에장착되는커넥터를도시한사시도이다.
발명의실시를위한형태
[32] 이하,첨부한도면을참고로하여본발명의여러실시예들에대하여본발명이 속하는기술분야에서통상의지식을가진자가용이하게실시할수있도록 상세히설명한다.본발명은여러가지상이한형태로구현될수있으며 여기에서설명하는실시예들에한정되지않는다.
[33] 또한,명세서전체에서,어떤부분이어떤구성요소를 "포함”한다고할때, 이는특별히반대되는기재가없는한다른구성요소를제외하는것이아니라 다른구성요소를더포함할수있는것을의미한다.
[34] 도 1은본발명의일실시예에따른전지모듈을나타내는사시도이다.
[35] 도 1을참조하면,본실시예에따른전지모듈 (10)은내부에셀조립체 (100)를 수용하는모듈케이스 (150)의외측에장착되는모듈커넥터 (130)를포함한다.셀 조립체 (100)를구성하는전지셀은파우치형이차전지로마련될수있고,셀 조립체 (W0)내에복수개로적층되어정렬될수있다.상기복수개의전지 셀들은서로전기적으로연결될수있고,전지셀각각은전극조립체와이를 수용하는전지케이스및상기전지케이스밖으로돌출되며상기전극조립체와 전기적으로연결되는전극리드를포함할수있다.
[36] 전지모듈 (10)은각종전장부품들을포함할수있으며 ,일례로 ICB (Internal Circuit Board)또는 BMS (Battery Management System)등을포함할수있다.상기 ICB및 BMS보드등의전장부품들은상기복수개의전지셀들과전기적으로 연결될수있다.
[37] 모듈케이스 (150)는전지모듈 (10)의외관을형성하며,내부에수용되는셀
조립체 (W0)의전극리드들이연장하는방향에위치하는셀조립체 (W0)의 적어도일측또는양쪽면에버스바조립체가결합되고,그외측으로절연 프레임 (160)이결합될수있다.버스바조립체는셀조립체 (100)를커버하도록 배치되는버스바프레임과,상기버스바프레임에고정되는버스바를포함할수 있다.버스바프레임은절연체로이루어져셀조립체 (W0)의전극리드들이 통과할수있는리드슬롯을포함하며,버스바는셀조립체 (100)의전극리드를 전기적으로연결할수있다.
[38] 모듈커넥터 (130)는버스바조립체,특히버스바프레임에결합될수있다. 버스바프레임에장착면을형성하고모듈커넥터 (130)를상기장착면에 안착시켜결합할수있다.이때모듈커넥터 (130)와장착면은서로슬라이딩하여 삽입되는체결구조를갖도록,한쪽에는슬라이딩홈이형성되고다른쪽에는 슬라이딩돌기가형성될수있다.
[39] 한편,전지모듈 (10)은모듈케이스 (150)내부에서전지셀들을센싱하도록
구성된연성인쇄회로기판 (Flexible Printed Circuit, FPC)을포함할수있으며 , 이러한연성인쇄회로기판은그단자부에터미널이연결되고,상기터미널은 모듈케이스 (150)외부로노출되어모듈커넥터 (130)와연결된다.따라서모듈 커넥터 (130)는상기셀조립체 (100)와연성인쇄회로기판를통해서전기적으로 연결될수있다.
[4이 도 2는본발명의일실시예에따른전지모듈에장착되는커넥터를도시한
사시도이고,도 3은도 2에나타낸커넥터의평면도이다.
[41] 도 2및도 3을참조하면,본실시예의모듈커넥터 (130)는터미널과접속하는 본체부 (131)와모듈케이스 (150)외측에장착하는데사용되는체결부 (135)를 포함한다.터미널은연성인쇄회로기판을통하여전지셀들과전기적으로 연결되는데,연성인쇄회로기판은단자부를통하여상기터미널과연결될수 있다.이로써모듈커넥터 (130)는각전지셀들의전기적,열적데이터를 BMS와 같은계측및제어기로전달할수있다.
[42] 모듈커넥터 (130)의체결부 (135)는모듈케이스 (150)의장착면과대면하는
본체부 (131)의일측에탄성을갖도록구성되어충격또는진동을흡수할수있다. 이때,체결부 (135)는장착면에대해평행한제 1방향 (X축방향)또는장착면에 수직한제 2방향 (y축방향)으로의탄성력을제공하도록구성될수있다.따라서 모듈커넥터 (130)가장착되는환경조건에따라상기 X축방향또는 y축
방향으로의탄성력을제공하도록설계할수있으며,상기 X축방향과 y축방향 모두에탄성력을제공할수도있다.이와같이탄성력을제공함으로써 X축방향 또는 y축방향으로의하중이가해지더라도체결부 (135)가이를흡수하여모듈 커넥터 (130)의연결부분이헐거워지거나파손되는것을방지할수있다. 2020/175883 1»（：1^1{2020/002683
[43] 모듈커넥터 (130)에 X축방향또는 축방향으로의탄성력을제공하기위해 ,도 3에서보는바와같이,체결부 (135)는본체부 (131)와의사이에빈공간 (¾을 형성하도록간격을두고이격될수있다.이때체결부 (135)는양쪽바깥으로 볼록한한쌍의탄성지지체 (135 135비를포함할수있으며,탄성지지체 (135 135비는본체부 (131)로부터멀어지는방향으로연장되어본체부 (131)와 대향하는부분에서장착단 (135이으로연결된다.이러한장착단 (135이은,도 2에 나타낸바와같이,장착면에슬라이딩결합할수있도록레일홈과수용공간을 가질수있다.
[44] 한편,도 3에서보는바와같이,한쌍의탄성지지체 (135 135비는양쪽
가장자리에서서로반대방향을향해바깥으로볼록하게굽어져본체부 (131)의 일면으로부터연장되고,이는장착단 (135이과일체로형성되어폐곡선을이루게 된다.이를상기 X축방향및 X축방향에수직한제 3방향江축방향)에서보면, 대략타원형을이루게되는데,상기타원형은상기 X축방향으로의폭이상기
X축방향으로의폭보다더크게형성될수있다.
[45] 또한한쌍의탄성지지체 (135 135비의상기 X축방향으로이격된폭은
본체부 (131)의폭과같거나작게형성될수있다.다시말하면,정상상태에있을 때상기 X축방향으로측정한한쌍의탄성지지체 (135\ 135비의최대폭은 동일한방향으로측정되는본체부 (131)의전체폭보다작거나같을수있다. 이로써 X축방향또는 X축방향의하중이모듈커넥터 (130)에가해지더라도 체결부 (135)의탄성지지체 (135 135비는본체부 (131)의가장자리에의해 설정되는영역의외부로돌출되어주변의구성들과간섭되는것을방지할수 있다.
[46] 상기한바와같은모듈커넥터 (130)의체결부 (135)는수지를재료로몰드
성형함으로써제작될수있다.체결부 (135)를구성하는탄성지지체 (135
135비와장착단 (135이은몰드성형을통해일체로형성될수있으며,
체결부 (135)는본체부 (131)와일체로형성될수있다.
[47] 도 4는본발명의일실시예에따른전지모듈에서모듈커넥터가장착된
상태를확대하여도시한부분사시도이고,도 5는본발명의일실시예에따른 전지모듈에서모듈커넥터가장착된상태를확대하여도시한부분정면도이다.
[48] 도 4를참조하면,모듈커넥터 (130)는본체부 (131)가바깥쪽으로향하고
체결부 (135)가셀조립체를내장한모듈케이스 (150)쪽을향하도록정렬되어 버스바조립체에마련된장착면 (142)에슬라이딩결합될수있다.도 5를 참조하면,빈공간 (¾을형성한모듈커넥터 (130)의체결부 (135)가모듈 케이스 (150)쪽으로접하여결합된것을볼수있다.따라서모듈커넥터 (130)의 체결부 (135)는절연프레임 (160)의주된면에수직한방향分축방향)으로 가해지는진동또는충격,또는절연프레임 (160)의주된면에평행하면서 지면 (또는전지모듈안착면)에수직한방향 (X축방향)으로가해지는진동또는 충격을흡수할수있다. 2020/175883 1»（：1/10公020/002683 본발명의다른실시예로,모듈커넥터 (130)를구성하는체결부 (135)의 탄성 지지체가복수의쌍으로형성되는구조를적용할수있다.즉,좌우양쪽에 각각 복수개의탄성지지체가구비되고,이러한탄성지지체가양쪽에서바깥으로 볼록하게서로등지고굽어져탄성구조를형성할수있다.
50] 본발명의또다른실시예로,모듈커넥터 (130)를구성하는체결부 (135)의탄성 지지체가한쌍또는복수의쌍으로양쪽에 형성되면서，이러한양쪽의 탄성 지지체가안쪽으로볼록하게서로마주보며굽어져탄성구조를형성할수있다. 도 6은비교예에따른전지모듈에장착되는모듈커넥터를도시한사시도이다.
52] 도 6에 나타낸모듈커넥터 (30)는전지 셀에 전기적으로연결되는터미널이
접속되는본체부 (32)의 일측으로부터 연장되는체결부 (34)를포함한다.
체결부 (34)는모듈케이스외측에구비된장착면에 견고하게고정될수있도록 복수의 핀으로구성되며 ,이러한복수의핀은군집을이루어고정되므로 탄성력을제공하기 어렵다.따라서본실시예에 따른모듈커넥터의 체결부와 달리 외부의진동이나충격의 영향을받으면,이러한진동이나충격을흡수하지 못하여상기 체결부 (34)가파손되거나비가역적으로변형될수있다.
한편,본발명의실시예에따른전지모듈은하나또는그이상이 팩케이스 내에 패키징되어 전지 팩을형성할수있다.
앞에서설명한전지모듈및이를포함하는전지 팩은다양한디바이스에 적용될수있다.이러한디바이스에는,전기자전거,전기자동차,하이브리드 자동차등의운송수단에 적용될수있으나,본발명은이에 제한되지 않고전지 모듈및이를포함하는전지 팩을사용할수있는다양한디바이스에 적용 가능하며,이또한본발명의권리범위에속한다.
[55] 이상에서본발명의바람직한실시예에 대하여상세하게설명하였지만본
]] ]]]]]]] 발명의 권리범위는이에 한정되는것은아니고다음의 청구범위에서정의하고 47902368 419
5555555666 있는본발명의 기본개념을이용한당업자의 여러 변형 및개량형태또한본
발명의 권리범위에속하는것이다.
부호의설명
10:전지모듈 100:셀조립체
130:모듈커넥터 131 :본체부
135:체결부 135 135 탄성지지체
1350：장착단 142:장착면
150:모듈케이스 160:절연프레임

Claims

2020/175883 1»（：1/10公020/002683 청구범위
［청구항 1］ 적어도하나의전지셀을포함하는셀조립체;
상기셀조립체를수용하는모듈케이스;및
상기모듈케이스외측에서장착면에장착되고,상기셀조립체와 전기적으로연결되며,상기모듈케이스외부에서외부커넥터와 연결되기위한모듈커넥터를포함하고,
상기모듈커넥터는,
상기전지셀과연결된터미널과접속하는본체부;
상기모듈케이스의장착면과대면하는상기본체부의일측에탄성을 갖도록구성되는체결부를포함하는,전지모듈.
［청구항 2］ 제 1항에 있어서,
상기모듈커넥터의체결부는상기장착면에평행한제 1방향또는상기 장착면에수직한제 2방향으로의탄성력을제공하도록구성된,전지 모듈.
［청구항 3］ 제 2항에 있어서,
상기모듈커넥터의체결부는상기본체부와의사이에빈공간을 형성하도록간격을두고이격된부분을갖는,전지모듈.
［청구항 4］ 제 2항에 있어서,
상기모듈커넥터의체결부는바깥으로볼록하게굽어진적어도한쌍의 탄성지지체를포함한,전지모듈.
［청구항 5］ 제 4항에 있어서,
상기한쌍의탄성지지체는상기제 1방향및제 2방향에수직한제 3 방향에서볼때타원형을이루는,전지모듈.
［청구항 6］ 제 5항에 있어서,
상기타원형은상기제 1방향으로의폭이상기제 2방향으로의폭보다더 크게형성된,전지모듈.
［청구항 7］ 제 4항에 있어서,
상기한쌍의탄성지지체의상기제 1방향으로이격된폭은상기제 1 방향으로측정한상기본체부의전체폭과같거나작은,전지모듈.
［청구항 8］ 제 4항에 있어서,
상기모듈커넥터는상기장착면에체결되는장착단을더포함하고, 상기한쌍의탄성지지체는상기본체부로부터멀어지는방향으로 연장되어단부에서상기장착단과연결되는,전지모듈.
［청구항 9］ 제 8항에 있어서,
상기장착단은상기장착면에슬라이딩삽입구조로장착되는,전지모듈.
［청구항 ］ 제 1항에 있어서,
상기모듈커넥터의체결부는수지재료로몰드성형되는,전지모듈. 2020/175883 1»（：1^1{2020/002683
[청구항 11] 제 1항내지제 항중어느한항에 따른적어도하나의 전지모듈;및 상기 적어도하나의 전지모듈을패키징하는팩 케이스 를포함하는전지 팩.
[청구항 12] 제 11항에 따른적어도하나의 전지 팩을포함하는디바이스.
PCT/KR2020/002683 2019-02-26 2020-02-25 충격 흡수 구조를 갖는 커넥터를 포함하는 전지 모듈 WO2020175883A1 (ko)

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KR20100123067A (ko) * 2009-05-14 2010-11-24 삼성에스디아이 주식회사 커넥터 및 이를 구비한 배터리 팩
KR20140058916A (ko) * 2012-11-07 2014-05-15 에스케이이노베이션 주식회사 이차전지팩용 센서어셈블리와 이를 갖는 이차전지팩
KR20170016743A (ko) * 2015-08-04 2017-02-14 삼성에스디아이 주식회사 배터리 팩
KR20170050511A (ko) * 2015-10-30 2017-05-11 주식회사 엘지화학 배터리 모듈 및 이를 포함하는 배터리 팩

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CN112219319B (zh) 2022-04-15
JP2021521604A (ja) 2021-08-26
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EP3780287A1 (en) 2021-02-17
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