KR20210136250A - Battery pack for convenient maintenance of cooling device - Google Patents

Battery pack for convenient maintenance of cooling device Download PDF

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Publication number
KR20210136250A
KR20210136250A KR1020200054231A KR20200054231A KR20210136250A KR 20210136250 A KR20210136250 A KR 20210136250A KR 1020200054231 A KR1020200054231 A KR 1020200054231A KR 20200054231 A KR20200054231 A KR 20200054231A KR 20210136250 A KR20210136250 A KR 20210136250A
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South Korea
Prior art keywords
cooling device
cooling
housing
battery pack
opening
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KR1020200054231A
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Korean (ko)
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KR102376848B1 (en
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강국진
남상현
송대천
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에너테크인터내셔널 주식회사
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Priority to KR1020200054231A priority Critical patent/KR102376848B1/en
Priority to PCT/KR2020/007061 priority patent/WO2021225210A1/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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
    • 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
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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

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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)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The present invention provides a battery pack with convenient maintenance of a cooling device, in which an operation of taking out and installing a cooling device again in a housing is simply performed without opening a battery cover covering the housing and a cooling cover covering the cooling device when replacement or repair of parts related to the cooling device occurs so that work efficiency is increased, special equipment is not required even for large-capacity battery packs, and a configuration of mounting and removing the cooling device in the battery pack is simplified so that the battery pack is easy to manufacture and easy to use. According to the present invention, the battery pack further comprises an accommodation structure for installing or taking out a cooling device in a housing. The accommodated structure includes: an opening part formed through a wall surface of one side of the housing, to which a cooling water pipe of the cooling device is connected, to install and take out the cooling device; an opening cover allowing the cooling water pipe of the cooling device to pass therethrough and opening and closing the opening part; a guide means guiding the cooling device inserted through the opening part to an accommodation position in the housing; and a coupling means fixing the cooling device at the accommodation position in the housing.

Description

냉각장치의 유지관리가 편리한 배터리팩{Battery pack for convenient maintenance of cooling device}Battery pack for convenient maintenance of cooling device

본 발명은 전기자동차에 사용되는 배터리팩에 관한 것으로, 더욱 상세하게는 배터리커버 및 냉각커버를 열지 않고도 내부에 설치된 냉각장치를 밖으로 꺼내어 부품 교환이나 수리를 한 후 다시 내부에 장착할 수 있도록 하여 냉각장치에 대한 유지관리가 매우 편리하게 이루어질 수 있는 배터리팩에 관한 것이다.The present invention relates to a battery pack used in an electric vehicle, and more particularly, by taking out the cooling device installed inside without opening the battery cover and cooling cover, replacing parts or repairing parts, and then installing it inside for cooling. It relates to a battery pack in which maintenance of the device can be performed very conveniently.

일반적으로, 리튬이온 배터리를 사용하는 전기자동차용 배터리팩은 출력시 열을 발생하므로 과열로부터 배터리를 보호하고 또한 최적의 출력 조건을 유지하기 위해서 냉각장치가 필수적으로 구비되고, 냉각장치로는 송풍팬으로 배터리팩 내부에 공기를 불어넣어 냉각시키는 공냉식과, 냉각수를 이용한 냉각라인을 배터리 냉각판에 직접 부착하는 열교환식이 많이 사용된다.In general, since a battery pack for an electric vehicle using a lithium ion battery generates heat during output, a cooling device is essential to protect the battery from overheating and maintain an optimal output condition, and a blower fan is a cooling device. For this purpose, the air cooling type in which air is blown into the battery pack to cool it, and the heat exchange type in which a cooling line using cooling water is directly attached to the battery cooling plate is widely used.

냉각라인을 이용하는 열교환식은 공냉식에 비하여 적극적이고 직접적인 배터리 냉각효과를 발휘할 수 있어 유리하지만, 하우징 내부에 배치된 배터리모듈의 위치와 다양한 차량의 요구 조건에 따라 다양한 모양과 위치로 냉각라인이 설치될 필요가 있고, 냉각라인의 기밀성도 매우 중요하다.The heat exchange method using the cooling line is advantageous as it can exert an active and direct battery cooling effect compared to the air cooling type, but it is necessary to install the cooling line in various shapes and positions according to the location of the battery module placed inside the housing and the requirements of various vehicles. The airtightness of the cooling line is also very important.

도 1은 종래의 냉각라인을 이용하는 수냉식 냉각장치가 설치된 배터리팩의 내부를 나타낸 사시도로서, 도시된 바와 같이 종래의 배터러팩(1)은 하우징(2) 내부에 복수개의 배터리모듈(3)이 수용되고, 배터리모듈(3)의 일측에 냉각팬(5a)과 열교환기(라디에이터)(5b)로 이루어진 냉각장치(5)가 설치된다.1 is a perspective view showing the inside of a battery pack in which a water-cooling cooling device using a conventional cooling line is installed. As shown, the conventional battery pack 1 has a plurality of battery modules 3 inside the housing 2, as shown. and a cooling device 5 including a cooling fan 5a and a heat exchanger (radiator) 5b is installed on one side of the battery module 3 .

또한 냉각장치(5)는 냉각커버(7)로 덮여 있고, 하우징(2) 내부 전체는 배터리커버(6)로 덮여 있어 최대한 기밀이 유지되고 있으며, 외부에서 하우징(2) 내부에 있는 냉각장치(5)의 열교환기(5b)로 연결되는 냉각수배관(4)은 하우징(2)의 일측벽을 관통하여 설치되고 관통된 부분은 패킹 등으로 기밀을 유지하도록 되어 있다.In addition, the cooling device (5) is covered with a cooling cover (7), and the entire inside of the housing (2) is covered with a battery cover (6) so that airtightness is maintained as much as possible, and the cooling device ( The cooling water pipe 4 connected to the heat exchanger 5b of 5) is installed through one side wall of the housing 2, and the penetrating portion is designed to maintain airtightness with packing or the like.

그러나, 상기와 같은 종래의 배터리팩(1)은, 냉각장치(5)가 하우징(2) 내에 설치되어 배터리커버(6) 및 냉각커버(7)로 덮여 있는 것이므로, 냉각기능과 관련한 부품의 교환이나 수리 발생시 배터리커버(6)와 냉각커버(7)에 조립된 모든 체결구를 해체해야 냉각장치(5)에 접근할 수 있고, 또한 냉각장치(5)를 하우징(2) 내에서 꺼낼 수 있다. However, in the conventional battery pack 1 as described above, since the cooling device 5 is installed in the housing 2 and covered with the battery cover 6 and the cooling cover 7, replacement of parts related to the cooling function However, in the event of repair, all fasteners assembled to the battery cover 6 and the cooling cover 7 must be disassembled to access the cooling device 5, and also the cooling device 5 can be taken out from the housing 2 .

따라서, 냉각장치(5)를 꺼내고 다시 장착하는 분해 및 조립이 번거롭고 작업시간이 길어져 작업효율이 저하되는 것은 물론, 용량이 큰 배터리팩의 경우 배터리커버(6)의 사이즈가 크고 무거워 분리할 때 특수한 장비가 요구될 수 있어 작업성을 더욱 어렵게 하는 문제가 있었다. Therefore, disassembly and assembly of taking out and re-installing the cooling device 5 is cumbersome, and the working time is long, which lowers the working efficiency. There was a problem that the workability was made more difficult because equipment may be required.

본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로, 그 목적은 냉각장치와 관련한 부품의 교환이나 수리 발생시 하우징을 덮는 배터리커버와 냉각장치를 덮는 냉각커버를 열지 않고도 하우징 내에서 냉각장치를 외부로 꺼내거나 다시 넣어 장착하는 작업을 간편하게 함으로써 작업효율을 높일 수 있고 용량이 큰 배터리팩의 경우에도 특별한 장비가 필요치 않아 냉각장치의 유지관리가 편리한 배터리팩을 제공하는데 있다.SUMMARY OF THE INVENTION The present invention is to solve the above problems in the prior art, and its object is to remove the cooling device from the inside of the housing without opening the battery cover that covers the housing and the cooling cover that covers the cooling device when replacement or repair of parts related to the cooling device occurs. The goal is to provide a battery pack that can increase work efficiency by making it easier to take out or put back into the furnace and install it, and it does not require special equipment even for a large-capacity battery pack, so maintenance of the cooling system is convenient.

또한 본 발명은 냉각장치를 배터리팩 내에 장착하고 꺼내는 구성을 매우 간소화하여 제조가 용이하고 사용이 편리하며, 균일한 풍량으로 냉각성능을 유지할 수 있는 냉각장치의 유지관리가 편리한 배터리팩을 제공하는데 있다.In addition, the present invention is to provide a battery pack that is easy to manufacture and use by very simplifying the configuration of mounting and taking out the cooling device in the battery pack, and is convenient for maintenance of the cooling device that can maintain cooling performance with a uniform air volume. .

상기의 목적을 달성하기 위하여 본 발명은, 하우징; 상기 하우징 내에 수용되는 배터리모듈; 상기 하우징 내에 설치되어 배터리모듈을 냉각시키기 위한 것으로, 고정브라켓의 상,하면에 각각 고정된 냉각팬 및 열교환기로 이루어지고 냉각수배관이 하우징을 관통하여 상기 열교환기에 연결된 냉각장치; 상기 하우징 내부에서 냉각장치를 덮는 냉각커버; 및 상기 하우징을 덮는 배터리커버를 포함하는 배터리팩에 있어서, 상기 냉각장치를 하우징 내에 장착하거나 꺼내기 위한 수납구조를 더 포함하며, 상기 수납구조는, 냉각장치의 냉각수배관이 연결되는 하우징의 일측벽면에 냉각장치를 넣고 빼내기 위하여 관통 형성한 개구부; 상기 냉각장치의 냉각수배관이 관통하는 조립구멍을 형성하고, 상기 개구부를 개폐하기 위한 개구커버;In order to achieve the above object, the present invention, a housing; a battery module accommodated in the housing; a cooling device installed in the housing to cool the battery module, comprising a cooling fan and a heat exchanger fixed to upper and lower surfaces of a fixing bracket, respectively, and a cooling water pipe passing through the housing and connected to the heat exchanger; a cooling cover covering the cooling device inside the housing; and a battery cover covering the housing, further comprising a receiving structure for mounting or taking out the cooling device into or out of the housing, wherein the receiving structure is on one side wall surface of the housing to which the cooling water pipe of the cooling device is connected. an opening formed through for inserting and withdrawing the cooling device; an opening cover for forming an assembly hole through which the cooling water pipe of the cooling device passes, and for opening and closing the opening;

상기 개구부를 통해 삽입되는 냉각장치를 하우징내의 수납위치로 안내하기 위한 가이드수단; 및 상기 냉각장치를 수납위치에서 하우징 내에 고정하기 위한 결합수단을 포함하여 이루어진 냉각장치의 유지관리가 편리한 배터리팩에 특징이 있다. guide means for guiding the cooling device inserted through the opening to a storage position in the housing; and a coupling means for fixing the cooling device in the housing at the receiving position.

또한 상기 본 발명에 있어서, 가이드수단은, 상기 냉각장치의 후단에 구비된 가이드핀과, 상기 하우징 내에 설치되고, 상기 냉각장치의 냉각팬이 위치하는 냉각덕트를 형성하며, 양측에 냉각장치의 수납시 상기 가이드핀이 안내되는 가이드레일을 구비하는 덕트케이스로 이루어진 냉각장치의 유지관리가 편리한 배터리팩에 특징이 있다.In addition, in the present invention, the guide means includes a guide pin provided at the rear end of the cooling device, a cooling duct installed in the housing, in which a cooling fan of the cooling device is located, and the cooling device is accommodated on both sides. The battery pack is characterized by convenient maintenance of the cooling device made of a duct case having a guide rail through which the guide pin is guided.

또한, 상기 본 발명에 있어서, 결합수단은 상기 덕트케이스의 가이드레일 후단에 구비되어 냉각장치의 수납위치에서 가이드핀을 상,하방향으로 고정하는 걸림부와, 상기 덕트케이스의 선단에 구비되어 냉각장치의 수납위치에서 고정브라켓과 나사로 고정되는 결합부를 구비하여 이루어진 냉각장치의 유지관리가 편리한 배터리팩에 특징이 있다.In addition, in the present invention, the coupling means is provided at the rear end of the guide rail of the duct case and is provided at the front end of the duct case with a locking portion for fixing the guide pin in the upper and lower directions at the receiving position of the cooling device for cooling. The battery pack is characterized by convenient maintenance of the cooling device having a fixing bracket and a coupling part fixed with screws at the storage position of the device.

상기의 특징적 구성을 가지는 본 발명의 배터리팩에 의하면, 하우징의 일측벽면에 형성한 개구부를 통해 냉각장치를 장착하거나 꺼낼수 있어 냉각장치와 관련한 부품의 교환이나 수리 발생시 배터리커버와 냉각커버를 분리해야하는 번거로운 작업이 필요없게 되므로 작업성이 향상되고, 용량이 큰 배터리팩의 경우에도 무거운 배터리커버를 들어올리는 특별한 장비가 필요치 않아 냉각장치의 유지관리가 편리한 효과가 있다. According to the battery pack of the present invention having the above characteristic configuration, the cooling device can be mounted or taken out through the opening formed on one side wall of the housing, so that the battery cover and the cooling cover must be separated when replacement or repair of parts related to the cooling device occurs. Since cumbersome work is not required, workability is improved, and even in the case of a large-capacity battery pack, there is no need for special equipment to lift the heavy battery cover, so maintenance of the cooling system is convenient.

또한 본 발명은 냉각장치의 수납구조인 가이드수단 및 결합수단에 의해 냉각장치를 장착하고 꺼내는 작업이 매우 신속하고 편리하게 이루어지고, 수납구조의 구성이 매우 간소화되어 제조가 용이하며, 수납구조의 냉각덕트에 의해 균일한 풍량을 배터리모듈쪽으로 유도시킬 수 있어 냉각성능이 유지되는 효과가 있다.In addition, according to the present invention, the operation of mounting and taking out the cooling device is performed very quickly and conveniently by the guide means and the coupling means, which are the storage structures of the cooling device, and the configuration of the storage structure is very simplified, so that manufacturing is easy, and the cooling of the storage structure is performed. A uniform air flow can be guided toward the battery module by the duct, so that the cooling performance is maintained.

도 1은 종래의 전기자동차용 배터리팩을 나타낸 사시도.
도 2는 본 발명에 따른 전기자동차용 배터리팩을 나타낸 사시도.
도 3은 본 발명에서 냉각장치의 수납상태를 나타내는 배터리팩의 사시도.
도 4는 본 발명에 따른 배터리팩에서 냉각장치를 나타낸 분해 사시도.
도 5의 (a) 내지 (d)는 본 발명에 따른 배터리팩에서 냉각장치의 수납과정을 나타낸 단면도.
도 6은 본 발명에 따른 배터리팩에서 냉각장치의 수납구조인 덕트케이스의 설치상태를 나타낸 사시도.
도 7의 (a) 및 (b)는 도 5의 A부 및 B부 확대도로서, 본 발명에서 수납구조에 의한 냉각장치의 후단부 결합상태를 나타낸 주요부 확대도.
도 8의 (a) 및 (b)는 도 5의 C부 및 D부 확대도로서, 본 발명에서 수납구조에 의한 냉각장치의 선단부 결합상태를 나타낸 주요부 확대도.
도 9는 본 발명에서 냉각장치에 의한 냉각공기의 흐름을 나타낸 배터리팩의 단면도.
도 10의 (a) 및 (b)는 본 발명에서 냉각장치의 냉각팬 수량과 분배홀 개수로 인한 냉각덕트 내부와 분배홀의 압력강하 변화를 나타낸 그래프. 1 is a perspective view showing a conventional battery pack for an electric vehicle.
2 is a perspective view showing a battery pack for an electric vehicle according to the present invention.
Figure 3 is a perspective view of the battery pack showing the storage state of the cooling device in the present invention.
4 is an exploded perspective view showing a cooling device in the battery pack according to the present invention.
5 (a) to (d) are cross-sectional views showing the storage process of the cooling device in the battery pack according to the present invention.
6 is a perspective view illustrating an installation state of a duct case, which is a storage structure of a cooling device in a battery pack according to the present invention.
7 (a) and (b) are enlarged views of parts A and B of FIG. 5 , and enlarged views of main parts showing the coupling state of the rear end of the cooling device according to the storage structure in the present invention.
8 (a) and (b) are enlarged views of parts C and D of FIG. 5, and are enlarged views of main parts showing the coupling state of the front end of the cooling device according to the storage structure in the present invention.
9 is a cross-sectional view of the battery pack showing the flow of cooling air by the cooling device in the present invention.
10 (a) and (b) are graphs showing the change in pressure drop in the cooling duct and the distribution hole due to the number of cooling fans and the number of distribution holes of the cooling device in the present invention.

이하, 본 발명의 바람직한 실시예를 첨부도면에 의거하여 상세하게 설명한다. 도 2 및 도 3은 본 발명에 따른 전기자동차용 배터리팩을 나타낸 사시도 및 냉각장치의 수납구조를 나타낸 사시도로서, 도시된 바와 같이 본 발명의 배터리팩(10)은 리튬이온 배터리가 다수개 조합되어 이루어지는 배터리모듈(11)을 복수개 구비하고, 이 복수개의 배터리모듈(11)은 배터리커버(12)로 상부가 개폐되는 하우징(13) 내에 수용된다.Hereinafter, a preferred embodiment of the present invention will be described in detail based on the accompanying drawings. 2 and 3 are a perspective view showing a battery pack for an electric vehicle according to the present invention and a perspective view showing a storage structure of a cooling device. As shown, the battery pack 10 of the present invention is a combination of a plurality of lithium ion batteries A plurality of battery modules 11 are provided, and the plurality of battery modules 11 are accommodated in a housing 13 whose upper part is opened and closed by a battery cover 12 .

또한 배터리팩(10)은 상기 하우징(13) 내에 설치되어 배터리모듈(11)을 냉각시키기 위한 냉각장치(20)와, 상기 냉각장치(20)를 덮는 냉각커버(25)와, 상기 냉각장치(20)를 하우징(13) 내에 장착하거나 꺼내기 쉽게 하는 수납구조를 구비한다.In addition, the battery pack 10 is installed in the housing 13 and includes a cooling device 20 for cooling the battery module 11, a cooling cover 25 covering the cooling device 20, and the cooling device ( 20) is provided with a housing structure that makes it easy to mount or take out the housing 13.

냉각장치(20)는 도 4에 도시된 바와 같이 고정브라켓(21)의 상면에 고정되는 냉각팬(22)과, 고정브라켓(21) 하면에 고정되는 열교환기(23)로 이루어지고, 열교환기(23)는 라디에이터 타입으로서 냉각수배관(24)이 연결되어 냉각수배관(24)을 통해 유입된 냉각수가 열교환기(23) 내부의 일정 통로를 흐르는 것에 의해 열교환기(23) 주변의 공기와 열교환이 이루어져 냉각공기를 생성하도록 되어 있다.As shown in FIG. 4 , the cooling device 20 includes a cooling fan 22 fixed to the upper surface of the fixing bracket 21 and a heat exchanger 23 fixed to the lower surface of the fixing bracket 21 , the heat exchanger Reference numeral 23 denotes a radiator type, in which a cooling water pipe 24 is connected, and the cooling water introduced through the cooling water pipe 24 flows through a predetermined passage inside the heat exchanger 23, so that heat exchange with the air around the heat exchanger 23 is performed. It is designed to produce cooling air.

상기와 같은 냉각장치(20)의 수납구조는, 도 3에 도시된 바와 같이 냉각장치(20)의 냉각수배관(24)이 연결되는 하우징(13)의 일측벽면에 냉각장치(20)를 넣고 빼내기 위한 개구부(31)를 관통형성하고, 개구부(31)는 개구커버(32)에 의해 개폐 가능하게 하며, 개구커버(32)에는 냉각장치(20)의 냉각수배관(24)이 관통할 수 있도록 조립구멍(도시안됨)을 형성하여 이루어진다.In the housing structure of the cooling device 20 as described above, as shown in FIG. 3 , the cooling device 20 is inserted and removed from one side wall surface of the housing 13 to which the cooling water pipe 24 of the cooling device 20 is connected. The opening 31 is formed through the opening 31 for the opening and closing by the opening cover 32, and the opening cover 32 is assembled so that the cooling water pipe 24 of the cooling device 20 can pass therethrough. This is done by forming a hole (not shown).

또한 상기 수납구조는 개구부(31)로부터 냉각장치(20)를 하우징(13)내의 수납위치에 안내하기 위한 가이드수단과 냉각장치(20)를 하우징(13) 내의 수납위치에서 고정하기 위한 결합수단을 구비한다.In addition, the housing structure includes a guide means for guiding the cooling device 20 from the opening 31 to the receiving position in the housing 13 and coupling means for fixing the cooling device 20 at the receiving position in the housing 13 . be prepared

수납구조의 가이드수단은 도 4 내지 도 6에서와 같이 상기 냉각장치(20)의 고정브라켓(21) 후단에 가이드핀(33)을 구비하고, 하우징(13) 내에는 상기 가이드핀(33)이 안내되는 가이드레일(34)이 구비된 덕트케이스(35)를 설치하여 이루어진다.The guide means of the receiving structure is provided with a guide pin 33 at the rear end of the fixing bracket 21 of the cooling device 20 as shown in FIGS. 4 to 6 , and the guide pin 33 is provided in the housing 13 . It is made by installing a duct case 35 provided with a guide rail 34 to be guided.

도 5에서와 같이 덕트케이스(35)는 긴 사각통형상으로 이루어져 하부 양쪽에 가이드레일(34)이 구비되고, 중간격판(35a)에 의해 냉각장치(20)의 고정브라켓(21)과 열교환기(23)가 위치하는 하부공간(35b)과 냉각장치(20)의 냉각팬(22)이 위치하는 냉각덕트(35c)로 구획되어 있다. 중간격판(35a)에는 관통구멍(35d)이 형성되어 이 관통구멍(35d)을 통해 냉각장치(20)의 냉각팬(22)이 냉각덕트(35c) 내에 위치하도록 되어 있고, 냉각덕트(35c)의 상부는 냉각커버(25)로 덮어 냉각덕트(35c)의 내부공간을 형성하도록 되어 있다.As shown in FIG. 5, the duct case 35 has a long rectangular cylindrical shape, and guide rails 34 are provided on both sides of the lower portion, and the fixing bracket 21 of the cooling device 20 and the heat exchanger by the intermediate diaphragm 35a. It is divided into a lower space 35b in which 23 is located and a cooling duct 35c in which the cooling fan 22 of the cooling device 20 is located. A through hole 35d is formed in the intermediate diaphragm 35a so that the cooling fan 22 of the cooling device 20 is located in the cooling duct 35c through the through hole 35d, and the cooling duct 35c The upper part of the is covered with the cooling cover 25 to form the inner space of the cooling duct (35c).

수납구조의 결합수단은, 도 7의 (a) 및 (b)에 도시된 바와 같이 덕트케이스(35)의 가이드레일(34) 후단에 'ㄷ'자 형상의 걸림부(36)가 구비되어 냉각장치(20)의 수납위치에서 가이드핀(33)이 삽입될 때 냉각장치(20)를 상,하방향으로 고정하도록 구성되고, 도 8의 (a) 및 (b)에 도시된 바와 같이 덕트케이스(35)의 선단에 결합부(37)가 구비되어 냉각장치(20)의 수납위치에서 고정브라켓(21)의 선단부(21a)와 나사로 고정할 수 있도록 구성된다.As shown in (a) and (b) of Figure 7, the coupling means of the receiving structure is provided with a 'C'-shaped locking part 36 at the rear end of the guide rail 34 of the duct case 35 to cool it. It is configured to fix the cooling device 20 in the up and down directions when the guide pin 33 is inserted in the receiving position of the device 20, and as shown in FIGS. 8 (a) and (b), the duct case A coupling part 37 is provided at the tip of the 35 so that it can be fixed with the tip part 21a of the fixing bracket 21 at the receiving position of the cooling device 20 with screws.

이러한 구성으로 이루어진 본 발명에 따른 배터리팩(10)의 작용을 설명하면 다음과 같다.The operation of the battery pack 10 according to the present invention having such a configuration will be described as follows.

먼저, 배터리팩(10)의 하우징(13) 내에 냉각장치(20)를 장착하는 과정을 설명한다. 도 3 및 도 5의 (a)에서와 같이 하우징(13)의 일측벽면에 형성한 개구부(31)를 통해 냉각장치(20)를 삽입함과 동시에, 냉각장치(20)의 가이드핀(33)을 덕트케이스(35)의 가이드레일(34)에 안착시킨다.First, a process of mounting the cooling device 20 in the housing 13 of the battery pack 10 will be described. 3 and 5 (a), the cooling device 20 is inserted through the opening 31 formed on one side wall of the housing 13, and at the same time, the guide pin 33 of the cooling device 20 is inserted. is seated on the guide rail 34 of the duct case 35 .

이어서 도 5의 (b) 및 (c)에서와 같이 냉각장치(20)를 하우징(13) 내부로 밀어 넣으면, 냉각장치(20)의 가이드핀(33)이 가이드레일(34)에 안내되면서 냉각장치(20)의 냉각팬(22)은 덕트케이스(35)의 중간격판(35a)에 형성된 관통구멍(35d)(도 6 참조)을 통해 냉각덕트(35c)에 위치되고, 냉각장치(20)의 고정브라켓(21) 및 열교환기(23)는 덕트케이스(35)의 하부공간(35b)에 위치된다.Then, when the cooling device 20 is pushed into the housing 13 as shown in FIGS. 5 (b) and (c), the guide pin 33 of the cooling device 20 is guided to the guide rail 34 while cooling. The cooling fan 22 of the device 20 is located in the cooling duct 35c through the through hole 35d (see FIG. 6) formed in the intermediate diaphragm 35a of the duct case 35, and the cooling device 20 of the fixing bracket 21 and the heat exchanger 23 are located in the lower space 35b of the duct case 35 .

이와같이 하여 냉각장치(20)가 하우징(13) 내의 수납위치에 도달하게 되면, 도 7의 (a) 및 (b)에서와 같이 냉각장치(20)의 가이드핀(33)이 가이드레일(34) 후단에 구비된 'ㄷ'자 형상의 걸림부(36)에 삽입되므로, 냉각장치(20)는 상,하방향과 후방으로 유동됨이 없이 고정된다.In this way, when the cooling device 20 reaches the receiving position in the housing 13, the guide pin 33 of the cooling device 20 is moved to the guide rail 34 as shown in FIGS. 7 (a) and (b). Since it is inserted into the 'C'-shaped locking part 36 provided at the rear end, the cooling device 20 is fixed without flowing up and down and backward.

이어서, 도 5의 (c) 및 (d)와 도 8의 (a) 및 (b)에 도시된 바와 같이, 후단의 걸림부(36)에 고정된 가이드핀(33)을 중심으로 냉각장치(20)를 회전시켜 들어올리게 되면, 냉각장치(20)의 고정브라켓(21)에 형성된 선단부(21a)가 덕트케이스(35)의 선단에 형성한 결합부(37)와 일치하게 되고, 이로써 체결구로 냉각장치(20)의 고정브라켓(21)과 덕트케이스(35)의 결합부(37)를 고정함으로써 냉각장치(20)를 수납위치에서 견고하게 고정할 수 있다.Then, as shown in FIGS. 5 (c) and (d) and 8 (a) and (b), the cooling device ( When the 20) is rotated and lifted, the tip portion 21a formed on the fixing bracket 21 of the cooling device 20 coincides with the coupling portion 37 formed on the tip end of the duct case 35, and thereby By fixing the fixing bracket 21 of the cooling device 20 and the coupling part 37 of the duct case 35, the cooling device 20 can be firmly fixed at the receiving position.

이어서, 도 2 및 도 3에서와 같이 하우징(13)의 개구부(31)를 개구커버(32)로 막고 체결함으로써 냉각장치(20)의 장착 작업이 간단하게 이루어진다. Next, as shown in FIGS. 2 and 3 , the mounting operation of the cooling device 20 is simplified by closing and fastening the opening 31 of the housing 13 with the opening cover 32 .

도 9는 상기와 같이 냉각장치(20)를 수납한 배터리팩(10)의 냉각공기 흐름상태를 나타낸 단면도로서, 도시된 바와 같이 냉각장치(20)의 열교환기(23)에 의해 차가워진 주변의 냉각공기는 냉각덕트(35c)에 위치한 냉각팬(22)에 의해 냉각덕트(35c)로 유입된다. 이때 냉각장치10)의 고정브라켓(21)과 덕트케이스(35) 사이에는 가스킷(26)을 설치하여 이들 사이의 기밀이 유지되도록 한다.9 is a cross-sectional view showing the cooling air flow state of the battery pack 10 housing the cooling device 20 as described above. The cooling air is introduced into the cooling duct 35c by the cooling fan 22 located in the cooling duct 35c. At this time, a gasket 26 is installed between the fixing bracket 21 of the cooling device 10 and the duct case 35 to maintain airtightness therebetween.

이어서 냉각덕트(35c)의 상부를 덮는 냉각커버(25)에는 복수개의 분배홀(25a)이 형성되어 배터리모듈(11)의 냉각통로(11a)와 연결되어 있고, 냉각덕트(35c) 내의 냉각공기는 복수개의 분배홀(25a)을 통해 배터리모듈(11)의 냉각통로(11a)로 유입되어 화살표로 표시한 경로를 따라 흐름으로써 배터리모듈(11)을 냉각시키게 된다. Subsequently, a plurality of distribution holes 25a are formed in the cooling cover 25 covering the upper portion of the cooling duct 35c and are connected to the cooling passage 11a of the battery module 11, and the cooling air in the cooling duct 35c is introduced into the cooling passage 11a of the battery module 11 through the plurality of distribution holes 25a and flows along the path indicated by the arrow to cool the battery module 11 .

도 10의 (a) 및 (b)는 냉각장치(20)의 냉각팬(22) 수량과 분배홀(25a) 개수로 인한 냉각덕트(35c) 내부와 분배홀(25a)의 압력강하 변화를 나타낸 그래프로서, 복수개의 냉각팬(22)으로 수집되어 냉각덕트(35c) 내부에서 발생된 풍압은 복수개의 분배홀(25a)의 어떠한 위치에서도 균일한 풍량을 유지 할 수 있는 레귤레이터 역할을 함으로써, 다양한 위치에 배치된 배터리모듈(11)을 균일하게 냉각 할 수 있다. 그러나 분배홀(25a)이 너무 많거나, 또는 냉각팬(22)의 수가 적어서 적절한 압력 강하가 발생되지 않는다면, 균일한 풍량 유지가 불가하다. 10 (a) and (b) show the change in pressure drop inside the cooling duct 35c and the distribution hole 25a due to the number of cooling fans 22 and the number of distribution holes 25a of the cooling device 20 As a graph, the wind pressure collected by the plurality of cooling fans 22 and generated inside the cooling duct 35c serves as a regulator capable of maintaining a uniform air volume at any position of the plurality of distribution holes 25a, thereby providing various locations. It is possible to uniformly cool the battery module 11 disposed in the . However, if there are too many distribution holes 25a or the number of cooling fans 22 is small, so that an appropriate pressure drop does not occur, it is impossible to maintain a uniform air volume.

이와 같이 장착되는 배터리팩(10)의 냉각장치(20)를 사용하다가 냉각장치(20)와 관련된 부품의 교환이나 수리가 필요할 경우에는, 냉각장치(20)의 수납구조를 이용하여 배터리커버(12)와 냉각커버(25)를 제거하지 않고도 냉각장치(20)에 접근하거나 하우징(13)으로부터 분리하여 교환이나 수리작업을 편리하게 수행할 수 있다.If replacement or repair of parts related to the cooling device 20 is required while using the cooling device 20 of the battery pack 10 mounted in this way, the battery cover 12 using the storage structure of the cooling device 20 is used. ) and the cooling cover 25, it is possible to access the cooling device 20 or separate it from the housing 13 to conveniently perform replacement or repair work.

즉, 도 3에서와 같이 개구부(31)를 막고 있는 개구커버(32)를 제거하고, 도 5의 (c) 및 (d)와 도 8의 (a) 및 (b)에서와 같이 덕트케이스(35)의 결합부(37)에 고정된 냉각장치(20)의 고정브라켓(21)를 결합상태를 해제하면, 냉각장치(20) 후단의 가이드핀(33)을 중심으로 냉각장치(20)를 아래방향으로 회전시켜 냉각장치(20)의 선단을 개구부(31)에 일치시킬 수 있고, 이어서 냉각장치(20)를 개구부(31)로부터 잡아당겨 빼내게 되면, 도 5의 (a) 및 (b)에서와 같이 가이드핀(33)이 가이드레일(34)에 안내되므로 냉각장치(20)를 쉽고 간편하게 빼낼 수 있다.That is, as in FIG. 3, the opening cover 32 blocking the opening 31 is removed, and as in FIGS. 5 (c) and (d) and 8 (a) and (b), the duct case ( When the fixing bracket 21 of the cooling device 20 fixed to the coupling part 37 of 35 is released from the coupling state, the cooling device 20 is moved around the guide pin 33 at the rear end of the cooling device 20 . It can be rotated downward to match the tip of the cooling device 20 with the opening 31, and then, when the cooling device 20 is pulled out from the opening 31, FIGS. 5 (a) and (b) ), since the guide pin 33 is guided to the guide rail 34, the cooling device 20 can be easily and conveniently removed.

이와 같이하여 본 발명은 냉각장치(20)를 하우징(13) 내에 장착하거나 꺼내기 위한 수납구조가 구비되어 냉각장치(20)의 부품 교환이나 수리시 작업을 매우 신속하고 편리하게 수행할 수 있다. In this way, in the present invention, a housing structure for mounting or taking out the cooling device 20 in the housing 13 is provided, so that the work can be performed very quickly and conveniently when replacing or repairing parts of the cooling device 20 .

지금까지 설명된 실시예는 본 발명의 바람직한 실시예를 설명한 것에 불과하고, 본 발명의 권리범위는 설명된 실시예에 한정되는 것은 아니며, 본 발명의 기술적 사상과 청구범위 내에서 이 분야의 당업자에 의하여 다양한 변경, 변형 또는 치환이 가능할 것이며, 그와 같은 실시예들은 본 발명의 범위에 속하는 것으로 이해되어야 한다.The embodiments described so far are merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited to the described embodiments, and within the spirit and claims of the present invention, those skilled in the art can Various changes, modifications or substitutions will be possible by this, and it should be understood that such embodiments fall within the scope of the present invention.

10 : 배터리팩 11 : 배터리모듈
12 : 배터리커버 13 : 하우징
20 : 냉각장치 21 : 고정브라켓
22 : 냉각팬 23 : 열교환기
24 : 냉각수배관 25 : 냉각커버
25a : 분배홀 31 : 개구부
32 : 개구커버 33 : 가이드핀
34 : 가이드레일 35 : 덕트케이스
36 : 걸림부 37 : 결합부10: battery pack 11: battery module
12: battery cover 13: housing
20: cooling device 21: fixing bracket
22: cooling fan 23: heat exchanger
24: cooling water pipe 25: cooling cover
25a: distribution hole 31: opening
32: opening cover 33: guide pin
34: guide rail 35: duct case
36: locking part 37: coupling part

Claims (3)

하우징;
상기 하우징 내에 수용되는 배터리모듈;
상기 하우징 내에 설치되어 배터리모듈을 냉각시키기 위한 것으로, 고정브라켓의 상,하면에 각각 고정된 냉각팬 및 열교환기로 이루어지고 냉각수배관이 하우징을 관통하여 상기 열교환기에 연결된 냉각장치;
상기 하우징 내부에서 냉각장치를 덮는 냉각커버; 및
상기 하우징을 덮는 배터리커버를 포함하는 배터리팩에 있어서,
상기 냉각장치를 하우징 내에 장착하거나 꺼내기 위한 수납구조를 더 포함하며,
상기 수납구조는,
냉각장치의 냉각수배관이 연결되는 하우징의 일측벽면에 냉각장치를 넣고 빼내기 위하여 관통 형성한 개구부;
상기 냉각장치의 냉각수배관이 관통되고 상기 개구부를 개폐하기 위한 개구커버;
상기 개구부를 통해 삽입되는 냉각장치를 하우징내의 수납위치로 안내하기 위한 가이드수단; 및
상기 냉각장치를 수납위치에서 하우징 내에 고정하기 위한 결합수단을 포함하여 이루어진 것을 특징으로 하는 냉각장치의 유지관리가 편리한 배터리팩.housing;
a battery module accommodated in the housing;
a cooling device installed in the housing to cool the battery module, comprising a cooling fan and a heat exchanger fixed to upper and lower surfaces of a fixing bracket, respectively, and a cooling water pipe passing through the housing and connected to the heat exchanger;
a cooling cover covering the cooling device inside the housing; and
In the battery pack comprising a battery cover covering the housing,
Further comprising a receiving structure for mounting or taking out the cooling device in the housing,
The storage structure is
an opening formed through a side wall of the housing to which the cooling water pipe of the cooling device is connected to insert and take out the cooling device;
an opening cover through which the cooling water pipe of the cooling device passes and opening and closing the opening;
guide means for guiding the cooling device inserted through the opening to a receiving position in the housing; and
and a coupling means for fixing the cooling device in the housing at the receiving position. 제 1 항에 있어서, 상기 가이드수단은,
상기 냉각장치의 후단에 구비된 가이드핀과, 상기 하우징 내에 설치되고 상기 냉각장치의 냉각팬이 위치하는 냉각덕트를 형성하며 양측에 냉각장치의 수납시 상기 가이드핀이 안내되는 가이드레일을 구비하는 덕트케이스로 이루어진 것을 특징으로 하는 냉각장치의 유지관리가 편리한 배터리팩.According to claim 1, wherein the guide means,
A duct having a guide pin provided at the rear end of the cooling device, a cooling duct installed in the housing and in which a cooling fan of the cooling device is located, and having guide rails on both sides to guide the guide pin when the cooling device is accommodated. A battery pack for convenient maintenance of the cooling system, characterized in that it consists of a case. 제 2 항에 있어서, 상기 결합수단은,
상기 덕트케이스의 가이드레일 후단에 구비되어 냉각장치의 수납위치에서 가이드핀을 상,하방향으로 고정하는 걸림부와, 상기 덕트케이스의 선단에 구비되어 냉각장치의 수납위치에서 고정브라켓과 고정되는 결합부를 구비하여 이루어진 것을 특징으로 하는 냉각장치의 유지관리가 편리한 배터리팩.According to claim 2, wherein the coupling means,
A coupling portion provided at the rear end of the guide rail of the duct case to fix the guide pin in the up and down directions at the receiving position of the cooling device, and the fixing bracket provided at the front end of the duct case and fixed with the fixing bracket at the receiving position of the cooling device A battery pack for convenient maintenance of the cooling device, characterized in that it is provided with a unit.
KR1020200054231A 2020-05-07 2020-05-07 Battery pack for convenient maintenance of cooling device KR102376848B1 (en)

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