KR102376848B1 - Battery pack for convenient maintenance of cooling device - Google Patents

Battery pack for convenient maintenance of cooling device Download PDF

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KR102376848B1
KR102376848B1 KR1020200054231A KR20200054231A KR102376848B1 KR 102376848 B1 KR102376848 B1 KR 102376848B1 KR 1020200054231 A KR1020200054231 A KR 1020200054231A KR 20200054231 A KR20200054231 A KR 20200054231A KR 102376848 B1 KR102376848 B1 KR 102376848B1
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cooling device
cooling
housing
opening
battery pack
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KR1020200054231A
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Korean (ko)
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KR20210136250A (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

본 발명은 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 않으며, 냉각장치를 배터리팩 내에 장착하고 꺼내는 구성을 매우 간소화하여 제조가 용이하고 사용이 편리한 배터리팩을 제공한다.
본 발명의 배터리팩은, 냉각장치를 하우징 내에 장착하거나 꺼내기 위한 수납구조를 더 포함하며, 수납구조는 냉각장치의 냉각수배관이 연결되는 하우징의 일측벽면에 냉각장치를 넣고 빼내기 위하여 관통 형성한 개구부와, 냉각장치의 냉각수배관이 관통하고 개구부를 개폐하기 위한 개구커버와, 개구부를 통해 삽입되는 냉각장치를 하우징내의 수납위치로 안내하기 위한 가이드수단과, 냉각장치를 수납위치에서 하우징 내에 고정하기 위한 결합수단을 포함하여 이루어진다.The present invention increases work efficiency by making it easy to remove or reinstall the cooling device from within 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. Even in the case of battery packs with large capacity, no special equipment is required, and the configuration of installing and removing the cooling device within the battery pack is greatly simplified, providing a battery pack that is easy to manufacture and convenient to use.
The battery pack of the present invention further includes a storage structure for mounting or removing the cooling device from the housing, and the storage structure includes an opening formed through a wall on one side of the housing to which the cooling water pipe of the cooling device is connected for inserting and removing the cooling device, and , an opening cover for opening and closing the opening through which the cooling water pipe of the cooling device passes, a guide means for guiding the cooling device inserted through the opening to the storage position in the housing, and a combination for fixing the cooling device in the housing at the storage position. It is accomplished including means.

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. More specifically, the present invention relates to a battery pack used in an electric vehicle. More specifically, the cooling device is cooled by allowing the cooling device installed inside to be taken out, exchanged or repaired, and then installed back inside without opening the battery cover and cooling cover. It relates to a battery pack that allows for very convenient maintenance of the device.

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, battery packs for electric vehicles using lithium-ion batteries generate heat during output, so a cooling device is essential to protect the battery from overheating and maintain optimal output conditions. The cooling device includes a blower fan. The air cooling type, which cools the battery pack by blowing air into it, and the heat exchange type, which attaches a cooling line using coolant directly to the battery cooling plate, are 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 type using cooling lines is more advantageous than the air cooling type in that it can exert an active and direct cooling effect on the battery, but cooling lines need to be installed in various shapes and positions depending on the location of the battery modules placed inside the housing and the requirements of various vehicles. And 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.Figure 1 is a perspective view showing the inside of a battery pack installed with a water-cooled cooling device using a conventional cooling line. As shown, the conventional battery pack (1) accommodates a plurality of battery modules (3) inside the housing (2). A cooling device 5 consisting of 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) to maintain maximum airtightness, and the cooling device ( The coolant 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 kept airtight with packing, etc.

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, the cooling device 5 is installed in the housing 2 and covered with the battery cover 6 and the cooling cover 7, so parts related to the cooling function can be exchanged. In the event of repair, all fasteners assembled on the battery cover (6) and cooling cover (7) must be dismantled to access the cooling device (5) and the cooling device (5) can be taken out from within 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 reassembly of removing and reinstalling the cooling device (5) are cumbersome, work time is prolonged, and work efficiency is reduced. In addition, in the case of large capacity battery packs, the battery cover (6) is large and heavy, making it difficult to remove. There was a problem that equipment may be required, making workability more difficult.

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.The present invention is intended to solve the above-described conventional problems, and its purpose is to allow the cooling device to be stored inside 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 easy to remove or reinstall, and that maintenance of the cooling system is convenient because it does not require special equipment even for large-capacity battery packs.

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 provides a battery pack that is easy to manufacture and convenient to use by greatly simplifying the configuration of installing and removing the cooling device from the battery pack, and providing a battery pack with convenient 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 includes a housing; a battery module accommodated in the housing; A cooling device installed in the housing to cool the battery module, consisting of a cooling fan and a heat exchanger respectively fixed to the top and bottom of a fixing bracket, and having a coolant pipe pass 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 storage structure for mounting or removing the cooling device from the housing, wherein the storage structure is located on one side wall of the housing to which the coolant pipe of the cooling device is connected. An opening formed through the cooling device to insert and remove it; an opening cover forming an assembly hole through which the cooling water pipe of the cooling device passes, and 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 within the housing; The battery pack is characterized by convenient maintenance of the cooling device, including a coupling means for fixing the cooling device in the housing at the storage 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, and a cooling duct in which the cooling fan of the cooling device is located, and the cooling device is accommodated on both sides. The battery pack is characterized by easy maintenance of the cooling device, which consists of a duct case equipped with 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 to secure the guide pin in the upward and downward directions at the storage position of the cooling device, and is provided at the front end of the duct case to provide cooling. A feature of the battery pack is that it is easy to maintain the cooling device, which is provided with a joint that is fixed with a fixing bracket and screws in 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 removed through an opening formed on one side wall of the housing, so that when replacement or repair of parts related to the cooling device occurs, the battery cover and the cooling cover must be separated. Workability is improved because there is no need for cumbersome work, and even in the case of large-capacity battery packs, there is no need for special equipment to lift the heavy battery cover, making maintenance of the cooling system 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, the present invention allows the installation and removal of the cooling device very quickly and conveniently by using the guide means and coupling means, which are the storage structure of the cooling device, and the configuration of the storage structure is very simplified, making it easy to manufacture, and cooling the storage structure. The duct can direct a uniform amount of wind toward the battery module, which has the effect of maintaining cooling performance.

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. Figure 1 is a perspective view showing a conventional battery pack for an electric vehicle.
Figure 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.
Figure 4 is an exploded perspective view showing a cooling device in a battery pack according to the present invention.
Figures 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.
Figure 6 is a perspective view showing the installation state of the duct case, which is a storage structure for the cooling device in the battery pack according to the present invention.
Figures 7 (a) and (b) are enlarged views of parts A and B of Figure 5, and are enlarged views of main parts showing the rear end connection state of the cooling device using the storage structure in the present invention.
Figures 8 (a) and (b) are enlarged views of parts C and D of Figure 5, and are enlarged views of main parts showing the state of coupling of the tip of the cooling device using the storage structure in the present invention.
Figure 9 is a cross-sectional view of the battery pack showing the flow of cooling air by the cooling device in the present invention.
Figures 10 (a) and (b) are graphs showing the change in pressure drop inside the cooling duct and the distribution hole due to the number of cooling fans and the number of distribution holes in 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, preferred embodiments 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 the storage structure of the cooling device. As shown, the battery pack 10 of the present invention is a combination of multiple lithium ion batteries. It is provided with a plurality of battery modules (11), 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 includes a cooling device 20 installed in the housing 13 to cool the battery module 11, a cooling cover 25 covering the cooling device 20, and the cooling device ( 20) is provided with a storage structure that makes it easy to mount or remove it from 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 consists of 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, and the heat exchanger (23) is a radiator type, and the coolant pipe (24) is connected so that the coolant flowing in through the coolant pipe (24) flows through a certain passage inside the heat exchanger (23), thereby exchanging heat with the air around the heat exchanger (23). It is designed to generate 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.The storage structure of the cooling device 20 as described above is, as shown in FIG. 3, the cooling device 20 is inserted into and removed from one side wall of the housing 13 to which the cooling water pipe 24 of the cooling device 20 is connected. An opening 31 is formed through the opening 31, and the opening 31 can be opened and closed by the opening cover 32, and the opening cover 32 is assembled so that the coolant pipe 24 of the cooling device 20 can pass through. 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 storage structure includes a guide means for guiding the cooling device 20 from the opening 31 to the storage position within the housing 13 and a coupling means for fixing the cooling device 20 at the storage position within the housing 13. Equipped with

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.As shown in FIGS. 4 to 6, the guide means of the storage structure is provided with a guide pin 33 at the rear end of the fixing bracket 21 of the cooling device 20, and the guide pin 33 is inside the housing 13. This is achieved by installing a duct case (35) equipped with a guided guide rail (34).

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 is shaped like a long rectangular cylinder and is provided with guide rails 34 on both sides of the lower part, and the fixing bracket 21 of the cooling device 20 and the heat exchanger are connected by an intermediate diaphragm 35a. It is divided into a lower space (35b) where (23) is located and a cooling duct (35c) where 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. The upper part of is covered with a cooling cover 25 to form the internal 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 FIG. 7, the coupling means of the storage structure is provided with a 'ㄷ' shaped locking portion 36 at the rear end of the guide rail 34 of the duct case 35 for cooling. It is configured to fix the cooling device 20 in the upward and downward directions when the guide pin 33 is inserted in the storage position of the device 20, and as shown in Figures 8 (a) and (b), the duct case A coupling portion 37 is provided at the distal end of the cooling device 20 so that it can be fixed to the distal end 21a of the fixing bracket 21 with a screw at the storage position of the cooling device 20.

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 configured as described above 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, the process of installing the cooling device 20 within 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 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 (b) and (c) of Figure 5, the guide pin 33 of the cooling device 20 is guided to the guide rail 34 and cools. 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 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 storage position within the housing 13, the guide pin 33 of the cooling device 20 is connected to the guide rail 34 as shown in Figures 7 (a) and (b). Since it is inserted into the 'ㄷ' shaped locking portion 36 provided at the rear end, the cooling device 20 is fixed without moving upward, downward or 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.Next, as shown in Figures 5 (c) and (d) and Figure 8 (a) and (b), the cooling device ( When 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 of the duct case 35, and thus becomes a fastener. By fixing the fixing bracket 21 of the cooling device 20 and the coupling portion 37 of the duct case 35, the cooling device 20 can be firmly fixed in the storage 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 opening 31 of the housing 13 is blocked and fastened with the opening cover 32, so that the cooling device 20 can be easily installed.

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.Figure 9 is a cross-sectional view showing the cooling air flow state of the battery pack 10 accommodating the cooling device 20 as described above, and as shown, the surrounding air cooled by the heat exchanger 23 of the cooling device 20 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 between them.

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 part 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 formed. flows 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, thereby cooling 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. Figures 10 (a) and (b) show the change in pressure drop inside the cooling duct 35c and the distribution holes 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 that can maintain a uniform wind volume at any position of the plurality of distribution holes 25a, thereby The battery module 11 placed in can be cooled evenly. However, if there are too many distribution holes 25a or the number of cooling fans 22 is small and an appropriate pressure drop is not generated, 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 can be removed using the storage structure of the cooling device 20. ) and the cooling cover 25, the cooling device 20 can be accessed or separated 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, remove the opening cover 32 blocking the opening 31 as shown in Figure 3, and remove the duct case (as shown in Figures 5 (c) and (d) and Figure 8 (a) and (b) When the fixing bracket 21 of the cooling device 20 fixed to the coupling portion 37 of the 35) is released, the cooling device 20 is centered around the guide pin 33 at the rear end of the cooling device 20. The tip of the cooling device 20 can be aligned with the opening 31 by rotating downward, and then the cooling device 20 is pulled out from the opening 31, as shown in (a) and (b) of Figure 5. ), 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, the present invention provides a storage structure for mounting or removing the cooling device 20 from the housing 13, so that 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 is within the technical spirit and scope of the claims of the present invention. Various changes, modifications, or substitutions may be made, and such embodiments should be understood as falling 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: catching portion 37: coupling portion

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 이루어지고,
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.housing;
a battery module accommodated in the housing;
A cooling device installed in the housing to cool the battery module, consisting of a cooling fan and a heat exchanger respectively fixed to the top and bottom of a fixing bracket, and having a coolant pipe pass through the housing and connected to the heat exchanger;
A cooling cover covering the cooling device inside the housing; and
In the battery pack including a battery cover covering the housing,
It further includes a storage structure for mounting or removing the cooling device from the housing,
The storage structure is,
An opening formed through one side wall of the housing to which the cooling water pipe of the cooling device is connected for inserting and removing the cooling device;
an opening cover through which the cooling water pipe of the cooling device passes and for opening and closing the opening;
Guide means for guiding the cooling device inserted through the opening to a storage position within the housing; and
It includes coupling means for fixing the cooling device in the housing at the storage position,
The guide means is,
A duct comprising a guide pin provided at the rear end of the cooling device, a cooling duct installed in the housing and where the cooling fan of the cooling device is located, and a duct having guide rails on both sides through which the guide pins are guided when the cooling device is stored. A battery pack for convenient maintenance of the cooling system, characterized by a case. 삭제delete 제 1 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.The method of claim 1, wherein the coupling means is:
A locking portion provided at the rear end of the guide rail of the duct case to secure the guide pin in the upward and downward directions at the storage position of the cooling device, and a coupling provided at the front end of the duct case and fixed to the fixing bracket at the storage position of the cooling device. A battery pack for convenient maintenance of the cooling system, characterized by having a unit.
KR1020200054231A 2020-05-07 2020-05-07 Battery pack for convenient maintenance of cooling device KR102376848B1 (en)

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