KR20190112568A - Fixing Structure of Assembled Battery - Google Patents

Fixing Structure of Assembled Battery Download PDF

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KR20190112568A
KR20190112568A KR1020180034722A KR20180034722A KR20190112568A KR 20190112568 A KR20190112568 A KR 20190112568A KR 1020180034722 A KR1020180034722 A KR 1020180034722A KR 20180034722 A KR20180034722 A KR 20180034722A KR 20190112568 A KR20190112568 A KR 20190112568A
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South Korea
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cross member
main member
main
fixing structure
center
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KR1020180034722A
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Korean (ko)
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장재철
심영훈
공재현
정바위
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에이치엘그린파워 주식회사
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Priority to KR1020180034722A priority Critical patent/KR20190112568A/en
Publication of KR20190112568A publication Critical patent/KR20190112568A/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
    • H01M50/20—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
    • H01M2/1083—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/08—Understructures, i.e. chassis frame on which a vehicle body may be mounted built up with interlaced cross members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

To solve problems, the present invention relates to a battery fixing structure comprising: a main member; and a cross member arranged on the main member in a vertical direction. The main member has a first main member and a second main member which are arranged in parallel to each other. The cross member has a center cross member, a left cross member, and a right cross member which are arranged in parallel to each other. The first main member, the center cross member, the left cross member, the right cross member, and the second main member are arranged to be spaced apart from each other at regular intervals and are integratedly formed by six spot weldings. The six spot weldings are formed at a point where the same unidirectional point of the first main member and the second main member meets the center line in a longitudinal direction of the center cross member, the left cross member, and the right cross member.

Description

일체형 배터리 고정 구조{Fixing Structure of Assembled Battery}Fixing Structure of Assembled Battery

본 발명은 배터리 팩을 이루는 고정 구조물을 일체형으로 함으로서, 하드웨어의 수량을 최소화하여 양산 시간을 단축하고, 하드웨어에 의한 단점을 보완하기 위한 것이다.The present invention is to integrate the fixed structure constituting the battery pack, to minimize the quantity of hardware to shorten the mass production time, to compensate for the shortcomings caused by hardware.

친환경 HEV/PHEV/EV 차량의 배터리는 강건한 구조물을 통해 차체에 고정되어야 한다. 배터리 팩이 차량에서 진동/충격에 의해 발생된 유격 및 내부 균열은 배터리 팩의 안전성을 위협하는 존재가 된다. 따라서 배터리 팩을 차체에 고정하기 위해서 사용되는 멤버류(샤시류)의 소재는 대체로 고장력 강판이 사용된다. The battery of an eco-friendly HEV / PHEV / EV vehicle must be secured to the body via a robust structure. Gaps and internal cracks caused by vibrations / shocks in the vehicle are a threat to the safety of the battery pack. Therefore, a high tensile steel sheet is generally used for the members (chassis) used to fix the battery pack to the vehicle body.

대부분의 양산 및 개발 차량에서 필요에 따라 1~7개로 분할된 멤버를 사용하여 배터리 팩 제작에 사용됨에 따라, 분할된 멤버는 여러 구조물이 조립된 형상이어야한다. 즉, 기본적으로 여러 구조물이 복합된 멤버 부품을 다시 추가 공정을 통해 하나로 조립하여 사용함에 따라 공정의 수 및 구조물의 수가 많다. 현재 배터리 팩 제작 공정에서 하드웨어 조립은 매우 중요한 과정이다. 하드웨어는 각 부품들을 고정하고 유지하는데 필요한 부품이다. 하드웨어 체결 시 길이에 따라 약 3초의 시간이 소요된다. 이는 체결 수량이 많은 구조에서 양산 시간이 그 만큼 증가하게 됨을 의미한다.As most production and development vehicles use 1-7 members as needed to build a battery pack, the divided members must be assembled into several structures. In other words, as a result of assembling the member parts in which several structures are combined into one again through an additional process, the number of processes and the number of structures are large. Hardware assembly is a very important process in the current battery pack manufacturing process. Hardware is the part needed to hold and hold each part. When fastening the hardware, it takes about 3 seconds depending on the length. This means that the mass production time is increased by that much in the structure of fastening quantity.

한국등록특허 0911559호Korean Patent Registration No. 0911559

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 배터리 팩을 이루는 고정 구조물을 일체형으로 함으로서, 하드웨어의 수량을 최소화하여 양산 시간을 단축하고, 하드웨어에 의한 단점을 보완하기 위한 것이다.The present invention has been made to solve the above problems, by integrating a fixed structure constituting the battery pack, to minimize the quantity of hardware to shorten the mass production time, to compensate for the shortcomings caused by hardware.

상기 과제를 해결하기 위하여 본 발명은 메인멤버, 메인멤버에 수직방향으로 배치된 크로스멤버, 메인멤버는 서로 평행하게 배열된 제1메인멤버 및 제2메인멤버, 크로스멤버는 서로 평행하게 배열된 중앙크로스멤버, 좌측크로스멤버, 우측크로스 멤버, 제1메인멤버, 중앙크로스멤버, 좌측크로스멤버, 우측크로스 멤버, 제2메인멤버는 서로 일정간격 이격되도록 배치된 채, 6개의 점용접에 의해 일체형이 되며, 6개의 점용접은 제1메인멤버 및 제2메인멤버의 동일한 일측방향의 지점과 중앙크로스멤버, 좌측크로스멤버, 우측크로스 멤버의 길이방향의 중심선이 만나는 곳에 형성되는 것을 특징이 있다. In order to solve the above problems, the present invention includes a main member, a cross member disposed in a vertical direction in the main member, a main member having a first main member and a second main member arranged in parallel with each other, and a cross member having a center arranged in parallel with each other. The cross member, the left cross member, the right cross member, the first main member, the central cross member, the left cross member, the right cross member, and the second main member are arranged to be spaced apart from each other at a predetermined interval and are integrally formed by six spot welding. The six spot welding is formed where the same one-way point of the first main member and the second main member and the center line in the longitudinal direction of the center cross member, the left cross member, and the right cross member meet.

상기와 같이 이루어지는 본 발명은 배터리 팩의 구성에서 하위 레벨의 부품들을 하드웨어(공구)로 체결한 뒤에, 고정 구조물을 형성하며 하드웨어를 대신하여 점용접을 적용하는 것이다. 점용접을 위해서는 점용접 장비가 진입할 수 있는 경로가 확보되어야 한다. 그럼에도 그 외 하드웨어 체결에 비해 필요공간이 작은 장점이 있으며, 사용되는 개수도 대폭 축소된다. 공정상으로도 입고되는 다수의 하이 부품들이 1개로 축소되므로 재고관리도 용이하다.The present invention made as described above is to fasten the components of the lower level in the configuration of the battery pack with the hardware (tool), to form a fixed structure and apply spot welding in place of the hardware. Spot welding requires a path for spot welding equipment to enter. Nevertheless, there is an advantage that the required space is smaller than the hardware fastening, and the number used is greatly reduced. It is also easy to manage inventory because many high parts received in process are reduced to one.

도 1은 메인멤버와 크로스멥버가 용접 결합된 배터리 구조이다.1 is a battery structure in which the main member and the cross chamber are welded to each other.

본 발명을 충분히 이해하기 위해서 본 발명의 바람직한 실시예를 첨부 도면을 참조하여 설명한다. 본 발명의 실시예는 여러 가지 형태로 변형될 수 있으며, 본 발명의 범위가 아래에서 상세히 설명하는 실시예로 한정되는 것으로 해석되어서는 안 된다. 본 실시예는 당업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위하여 제공되는 것이다. 따라서 도면에서의 요소의 형상 등은 보다 명확한 설명을 강조하기 위해서 과장되어 표현될 수 있다. 각 도면에서 동일한 부재는 동일한 참조부호로 도시한 경우가 있음을 유의하여야 한다. 또한, 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 공지 기능 및 구성에 대한 상세한 기술은 생략된다.In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment of the present invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

도 1은 메인멤버와 크로스멥버가 용접 결합된 배터리 구조이다. 상기 배터리 고정구조는 메인멤버와 메인멤버에 수직방향으로 배치된 크로스멤버, 메인멤버의 일측단부와 크로스멤버가 점용접에 의해 일체형이 된다.1 is a battery structure in which the main member and the cross chamber are welded to each other. In the battery fixing structure, the main member and the cross member disposed in the vertical direction in the main member, one end of the main member and the cross member are integrated by spot welding.

접용접(spot welding)이란, 저항 발열을 이용하여 금속을 접합하는 저항용접법의 일종이다. 일반적으로 금속은 전기를 잘 전달하므로, 줄(JOULE) 발열을 이용한 방법으로 용접될 피금속판을 겹쳐서 전극으로 가압하여 전압을 인가하여 전류를 흐르게하면, 용접부가 줄 열에 의해 가열되어 용융되고 피용접재를 야금적으로 접합하게 된다. 장점으로 대부분 자동으로 진행되어 작업자의 숙련도에 영향이 적으며, 단시간에 용접을 진행하기 때문에 가열영역이 용접부 근방으로 한정되어 열에 의한 비틀림이 적고, 비교적 깨끗한 용접면 및 흄의 발생이 적다는 특징이 있다.Spot welding is a kind of resistance welding method in which a metal is joined using resistance heat generation. In general, the metal transfers electricity well. Therefore, when the metal plate to be welded is pressurized with an electrode to apply a voltage to flow an electric current, the weld is heated and melted by the heat of the joule and welded material. Metallurgical bonding. Advantageously, it is mostly automatic and has little influence on the skill of the operator, and because welding is performed in a short time, the heating area is limited to the vicinity of the welding part, so that there is little torsion by heat, and relatively clean welding surface and the generation of fume are less have.

여기서, 메인멤버는 서로 평행하게 배열된 제1메인멤버(10) 및 제2메인멤버(20)를 포함하며, 크로스멤버는 서로 평행하게 배열된 중앙크로스멤버(30), 좌측크로스멤버(40), 우측크로스멤버(50)를 포함할 수 있다.Here, the main member includes a first main member 10 and a second main member 20 arranged in parallel with each other, and the cross member includes a center cross member 30 and a left cross member 40 arranged in parallel with each other. It may include a right cross member 50.

배터리 모듈은 제1메인멤버와 제2메인멤버에 걸쳐 지지되며, 제1메인멤버와 제2메인멤버는 차량 폭방향으로 배치되고, 중앙크로스멤버, 좌측크로스멤버, 우측크로스멤버는 차량 전후방향으로 배치될 수 있다.The battery module is supported over the first main member and the second main member, the first main member and the second main member are disposed in the vehicle width direction, and the center cross member, the left cross member, and the right cross member are positioned in the front and rear direction of the vehicle. Can be arranged.

한편, 크로스멤버는 메인멤버를 아래에서 지지하는 베이스부(60)와 차량에 고정되는 차량고정부(70)를 포함할 수 있다. 즉, 중앙크로스멤버, 좌측크로스멤버, 우측크로스멤버 각각은 베이스부(60), 연결부(80), 차량고정부(70)로 이루어지고, 베이스부는 제1메인멤버 및 제2메인멤버의 하부에서 제1메인멤버 및 제2메인멤버를 지지한다. 차량고정부는 배터리 구조물을 차량에 고정시키는 역할을 한다. 상기 고정은 용접이나 체결구조에 의해 이루어지며, 진동이나 충격을 완화하기 위한 별도의 장치가 필요할 수도 있다.Meanwhile, the cross member may include a base part 60 supporting the main member from below and a vehicle fixing part 70 fixed to the vehicle. That is, the center cross member, the left cross member, and the right cross member are each composed of a base part 60, a connection part 80, and a vehicle fixing part 70, and the base part is formed at the lower part of the first main member and the second main member. The first main member and the second main member are supported. The vehicle fixing part serves to fix the battery structure to the vehicle. The fixing is made by a welding or fastening structure, and may require a separate device for mitigating vibration or shock.

차량고정부는 지면으로부터 베이스보다 높은 곳에 위치한다. 즉, 차량고정부와 베이스부는 단차를 형성하며, 이러한 단차는 연결부에 의해 형성되어진다. 연결부는 S자형이나 만곡부를 갖는 형태로서 제1메인멤버 및 제2메인멤버를 하부에서 지지하는 베이스부를 차량고정부와 연결시킨다.The vehicle fixing part is located above the base from the ground. That is, the vehicle fixing part and the base part form a step, and this step is formed by the connecting part. The connecting portion has an S-shape or a curved portion to connect the base portion supporting the first main member and the second main member to the vehicle fixing part.

각각 베이스부(60), 연결부(80), 차량고정부(70)를 포함하는 중앙크로스멤버(30), 좌측크로스멤버(40), 우측크로스멤버(50)는 제1메인멤버(10) 및 제2메인멤버(20)와 접용접에 의해 고정된다. The center cross member 30, the left cross member 40, and the right cross member 50 including the base part 60, the connection part 80, and the vehicle fixing part 70, respectively, are the first main member 10 and the first cross member 50. The second main member 20 is fixed by welding.

특히, 중앙크로스멤버(30), 좌측크로스멤버(40), 우측크로스멤버(50) 각각의 베이스부(60)와 연결부(80)가 만나는 일측 지점 중 제1메인멤버(10)와 교차되는 지점이 점용접 부위이다. 제1메인멤버(10)와의 교차점에서 형성된 점용접은 3개 지점이다.Particularly, a point where the first main member 10 intersects at one side where the base portion 60 and the connecting portion 80 of each of the center cross member 30, the left cross member 40, and the right cross member 50 meet. This is a spot welding site. The spot welding formed at the intersection with the first main member 10 is three points.

한편, 중앙크로스멤버(30), 좌측크로스멤버(40), 우측크로스멤버(50) 각각의 베이스부(60)와 연결부(80)가 만나는 일측이 외에 상기 베이스부(60)가 제2메인멤버(20)와 교차되는 지점이 3개 형성된다. 특히, 중앙크로스멤버(30), 좌측크로스멤버(40), 우측크로스멤버(50) 각각의 베이스부는 연결부 및 차량고정부를 형성하기 위해 일측으로 연장형성되는 반면, 타측으로 형성된 베이스부(60) 타단부는 제2메인멤버(20)보다 연장형성되지 않는다. 즉, 중앙크로스멤버(30), 좌측크로스멤버(40), 우측크로스멤버(50)의 베이스부 중 타단부에서는 연장부위가 없어 제2메인멤버(20)와 용접점을 형성하지 않으며, 타단부가 아닌 제2메인멤버(20)와의 교차지점에 또 다른 3개의 점용접 지점이 형성된다. 제1메인멤버(10)와 제2메인멤버(20) 공통으로 어떤 일측 지점에 각각 3개씩 점용접 지점이 형성되는 이유는 배터리 모듈 지지를 위해 균일한 중력 및 측면충격하중을 받도록 하기 위함이다. 또한, 불필요한 연장부를 형성하지 않음으로서 크로스 멤버의 길이도 단축시킬 수 있다. On the other hand, in addition to one side where the base portion 60 and the connecting portion 80 of each of the center cross member 30, the left cross member 40, and the right cross member 50 meet, the base portion 60 is the second main member. Three points which intersect with 20 are formed. In particular, the base portion of each of the center cross member 30, the left cross member 40, the right cross member 50 is extended to one side to form a connection portion and the vehicle fixing portion, while the base portion 60 formed on the other side The other end is not extended than the second main member 20. That is, since the other end of the base portion of the center cross member 30, the left cross member 40, the right cross member 50 does not have an extended portion, and does not form a welding point with the second main member 20, the other end portion Another three spot welding points are formed at the intersection with the second main member 20 instead of the second main member 20. The reason why three spot welding points are formed on one side in common to the first main member 10 and the second main member 20 is to receive a uniform gravity and side impact load for supporting the battery module. In addition, the length of the cross member can be shortened by not forming unnecessary extensions.

다시 설명하면 메인멤버, 메인멤버에 수직방향으로 배치된 크로스멤버, 메인멤버는 서로 평행하게 배열된 제1메인멤버(10) 및 제2메인멤버(20), 크로스멤버는 서로 평행하게 배열된다. 중앙크로스멤버(30), 좌측크로스멤버(40), 우측크로스멤버(50) 및 제1메인멤버(10), 제2메인멤버(20) 모두 서로 일정간격 이격되도록 배치된 채, 6개의 점용접에 의해 일체형이 된다.In other words, the main member, the cross member disposed in the vertical direction in the main member, the main member are arranged in parallel with each other, and the first main member 10 and the second main member 20 arranged in parallel with each other. The center cross member 30, the left cross member 40, the right cross member 50 and the first main member 10, the second main member 20 are all arranged to be spaced apart from each other, six spot welding It becomes one piece by.

또한, 6개의 점용접은 제1메인멤버(10) 및 제2메인멤버(20)의 동일한 일측방향의 지점과 중앙크로스멤버(30), 좌측크로스멤버(40), 우측크로스멤버(50)의 길이방향의 중심선이 만나는 곳에 형성되며, 기본적인 하위레벨의 멤버 부품들을 제작한 뒤에, 점용접을 통해 일체화시키게 된다. 배터리 팩의 구성에서 하위 레벨의 부품들을 하드웨어(공구)로 체결한 뒤에, 고정 구조물을 형성하며 하드웨어를 대신하여 점용접을 적용하는 것이다. 점용접을 위해서는 점용접 장비가 진입할 수 있는 경로가 확보되어야 한다. 그럼에도 그 외 하드웨어 체결에 비해 필요공간이 작은 장점이 있으며, 사용되는 개수도 대폭 축소된다. 공정상으로도 입고되는 다수의 하이 부품들이 1개로 축소되므로 재고관리도 용이하다.In addition, the six spot welding of the same unidirectional direction of the first main member 10 and the second main member 20 and the center cross member 30, the left cross member 40, the right cross member 50 It is formed where the longitudinal center line meets, and after the basic low-level member parts are manufactured, they are integrated by spot welding. In the configuration of the battery pack, the lower-level parts are fastened by hardware (tool), and then a fixed structure is formed and spot welding is applied instead of the hardware. Spot welding requires a path for spot welding equipment to enter. Nevertheless, there is an advantage that the required space is smaller than the hardware fastening, and the number used is greatly reduced. It is also easy to manage inventory because many high parts received in process are reduced to one.

10 : 제1메인멤버
20 : 제2메인멤버
30 : 중앙크로스멤버
40 : 좌측크로스멤버
50 : 우측크로스멤버
60 : 베이스부
70 : 차량고정부
80 : 연결부10: the first main member
20: the second main member
30: center cross member
40: left cross member
50: right cross member
60: base part
70: vehicle fixing part
80: connection

Claims (6)

배터리 고정구조에 있어서,
메인멤버;
상기 메인멤버에 수직방향으로 배치된 크로스멤버;
상기 메인멤버의 일측단부와 상기 크로스멤버가 점용접에 의해 일체형이 되는 것을 특징으로 하는 일체형 배터리 고정 구조. In the battery fixing structure,
Main member;
A cross member vertically disposed on the main member;
One side end of the main member and the cross member is an integrated battery fixing structure, characterized in that the one-piece by spot welding. 제1항에 있어서,
상기 메인멤버는 서로 평행하게 배열된 제1메인멤버 및 제2메인멤버인 것을 특징으로 하는 일체형 배터리 고정 구조. The method of claim 1,
The main member is an integrated battery fixing structure, characterized in that the first main member and the second main member arranged in parallel to each other. 제2항에 있어서,
상기 크로스멤버는 서로 평행하게 배열된 중앙크로스멤버, 좌측크로스멤버, 우측크로스 멤버인 것을 특징으로 하는 일체형 배터리 고정 구조.The method of claim 2,
The cross member is a unitary battery fixing structure, characterized in that the center cross member, the left cross member, the right cross member arranged in parallel with each other. 제3항에 있어서,
상기 크로스멤버는 상기 메인멤버를 아래에서 지지하는 베이스부;
차량에 고정되는 차량고정부;를 포함하는 것을 특징으로 하는 일체형 배터리 고정 구조. The method of claim 3, wherein
The cross member includes a base portion supporting the main member from below;
Vehicle fixing structure fixed to the vehicle; integral battery fixing structure comprising a. 제4항에 있어서,
상기 차량고정부와 상기 베이스부는 단차를 형성하는 것을 특징으로 하는 일체형 배터리 고정 구조. The method of claim 4, wherein
And the vehicle fixing part and the base part form a step. 제5항에 있어서,
상기 단차는 상기 베이스부와 차량고정부를 연결하는 연결부에 의해 형성되는 것을 특징으로 하는 일체형 배터리 고정 구조.
The method of claim 5,
And the step is formed by a connection part connecting the base part and the vehicle fixing part.
KR1020180034722A 2018-03-26 2018-03-26 Fixing Structure of Assembled Battery KR20190112568A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100911559B1 (en) 2007-11-13 2009-08-10 기아자동차주식회사 Frame structure for vertical mounting of package

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100911559B1 (en) 2007-11-13 2009-08-10 기아자동차주식회사 Frame structure for vertical mounting of package

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