WO2017150941A2 - Case structure of battery pack having improved cooling performance - Google Patents

Case structure of battery pack having improved cooling performance Download PDF

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Publication number
WO2017150941A2
WO2017150941A2 PCT/KR2017/002335 KR2017002335W WO2017150941A2 WO 2017150941 A2 WO2017150941 A2 WO 2017150941A2 KR 2017002335 W KR2017002335 W KR 2017002335W WO 2017150941 A2 WO2017150941 A2 WO 2017150941A2
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cooling
battery pack
case
flow path
passage
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PCT/KR2017/002335
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French (fr)
Korean (ko)
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WO2017150941A3 (en
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백승률
강형관
양재훈
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주식회사 엘지화학
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a case of a battery pack, and more particularly, to a case of a battery pack having a structure capable of cooling a cell by delivering cooling water.
  • Lithium secondary batteries are widely applied to fields requiring high energy, such as automobile batteries or power storage devices, because a plurality of unit cells are bundled into one pack.
  • a battery pack including a plurality of unit cells causes swelling with heat generation during overcharging and convex expansion occurs in the outward direction of the module.
  • a cooling passage is generally provided inside the case of the battery pack to allow heat exchange to flow through the cooling water.
  • the conventional cooling oil not only takes up a lot of space inside the case, but also has a vulnerability that may cause a battery failure or a safety accident when leakage of coolant occurs.
  • a plurality of batteries are housed in a battery case having a flow path of a cooling liquid and provided with electrode terminals of a positive electrode and a negative electrode, and each battery is cooled.
  • a cooling apparatus characterized by providing a plurality of normal battery storage chambers in a case, forming a spiral flow path on the outer circumference of each battery housing chamber, flowing a coolant to the outer circumference of the battery housing chamber, and cooling each battery. It is.
  • the conventional cooling devices are complicated by the configuration of the battery pack case for the formation of the cooling flow path, so that the assembly process is inconvenient and the productivity is not good, there is a need for countermeasures.
  • the cooling flow path is provided on the outside of the case to prevent breakdown of the battery due to leakage of the coolant, and the cooling flow path can be formed at the same time as the assembly of the cover coupled to the case
  • the purpose is to provide a case structure of a battery pack.
  • the present invention includes a receiving portion having an inner space that can accommodate a plurality of cells; It provides a case structure of a battery pack comprising a; and a cooling flow path formed in a predetermined pattern on the outer bottom of the receiving portion.
  • Cooling passage forming grooves are formed in the outer bottom portion of the accommodating portion, and a cooling passage cover coupled to the outside of the accommodating portion to cover the cooling passage forming grooves to form the cooling passage.
  • the cooling passage cover is preferably bolted to the outside of the receiving portion.
  • the accommodating portion is provided in at least two regions spaced apart from each other, and between adjacent accommodating portions, a tubular portion having a coolant delivery flow path having a ' ⁇ ' shape in cross section protrudes from a bottom surface of the accommodating portions, and
  • the cooling water delivery flow path portion is preferably located outside the case to deliver the cooling water to the cooling flow path.
  • the cooling passage may be formed to include a zigzag pattern.
  • the present invention by forming the cooling flow path outside the case, it is possible to prevent a failure or damage of the battery pack due to leakage of the cooling water.
  • the present invention can be easily formed by coupling the cover to the case, the cooling flow path can be easily formed, by combining the cooling flow path cover using the bolt has the effect of improving the processability and cost.
  • tubular part for delivering the coolant is integrated with the case body, there is no need to provide a separate pipe or a hose for delivering the coolant to the outside.
  • FIG. 1 is a perspective view showing a case structure of a battery pack according to an embodiment of the present invention
  • FIG. 2 is a perspective view showing the bottom configuration of FIG.
  • FIG. 3 is an exploded perspective view of FIG. 2.
  • FIG. 1 is a perspective view showing a case structure of a battery pack according to a preferred embodiment of the present invention
  • Figure 2 is a perspective view showing the bottom configuration of Figure 1
  • Figure 3 is an exploded perspective view of FIG.
  • a case structure of a battery pack includes a receiving part 110 in which a plurality of cells are accommodated, and a cooling flow path formed at an outer bottom of the receiving part 110 ( And a case body 100 having a body 122.
  • the case body 100 is a portion that becomes a lower part of the case structure, and preferably made of a metal material having relatively excellent heat transfer performance, such as aluminum.
  • the cell accommodated in the space of the accommodating part 110 may be a conventional lithium ion secondary battery having a plate-like body which is generally rectangular and has a thin thickness, such as a pouch type secondary battery.
  • the plurality of cells are arranged to be stacked in the inner space of the receiving unit 110.
  • an upper case (not shown) having a predetermined shape is tightly assembled on the upper portion of the case body 100 to close the upper portion of the case body 100.
  • the accommodating part 110 is provided in at least two regions spaced apart from the case body 100, and between the adjacent accommodating parts 110 has a tubular part having a coolant delivery passage 121 having a ' ⁇ ' shape in cross section. 120 protrudes from the inner bottom surface of the receiving parts 110.
  • the coolant delivery channel 121 of the tubular part 120 is located outside the bottom of the case body 100 to transfer the coolant to the cooling channel 122.
  • the cooling water delivery passage 121 and the cooling passage 122 of the tubular portion 120 are formed to communicate with each other when the assembly of the case is completed.
  • the case body 100 may be provided with a groove or a passage of a predetermined pattern for communicating at least one end of the cooling passage 122 with the cooling water transfer passage 121.
  • the bottom surface of the case body 100 that is, the outer bottom portion of the accommodating part 110, has a cooling passage 122 having a groove structure in which a cross section is formed, for example, in a ' ⁇ ' shape.
  • the cover 111 is formed on the bottom surface of the case body 100 to cover the open portion of the cooling flow passage 122 to form a complete flow passage through which the cooling water flows.
  • the cooling passage 122 is preferably formed to include a zigzag pattern.
  • Cooling flow path cover 111 is preferably made of a metal plate, coupled to the outside of the receiving portion 110 located on the bottom of the case body 100 by a plurality of bolts 113 to open the cooling flow path 122 Covering the formed part forms a complete flow path.
  • a rubber sealing member 112 may be interposed between the cooling passage cover 111 and the case body 100 to prevent leakage.
  • the coolant delivery passage 121 and the cooling passage 122 are located at the outer portion of the accommodating part 110, so that the cooling water is circulated and the leakage of the cooling water is maintained. Even if it occurs, the cooling water does not penetrate into the interior of the accommodating part 110, thereby protecting the cell safely.
  • the cover 111 is assembled to the bottom surface of the case body 100 and a complete flow path through which the coolant flows is formed, the assembly processability is good, and the tubular part 120 forming the coolant delivery flow path 121 is formed. Since it is integrated in the case body 100, it is not necessary to provide a separate pipe or hose for the delivery of the coolant can simplify the structure of the battery pack.
  • a cooling flow path is formed on the outside of the case body to improve the cooling performance while protecting the cell from leakage of the cooling water.

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  • Battery Mounting, Suspending (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)

Abstract

Disclosed is a case structure of a battery pack, the case structure comprising: a receiving portion having an interior space capable of accommodating a plurality of cells therein; and a cooling channel formed in a predetermined pattern at an outer lower part of the receiving portion.

Description

냉각 성능이 개선된 배터리 팩의 케이스 구조Case structure of the battery pack with improved cooling performance
본 출원은 2016년 3월 3일에 출원된 한국특허출원 제10-2016-0025761호에 기초한 우선권을 주장하며, 해당 출원의 명세서 및 도면에 개시된 모든 내용은 본 출원에 원용된다.This application claims priority based on Korean Patent Application No. 10-2016-0025761, filed March 3, 2016, and all the contents disclosed in the specification and drawings of the application are incorporated in this application.
본 발명은 배터리 팩의 케이스에 관한 것으로서, 더욱 상세하게는 냉각수를 전달하여 셀을 냉각시킬 수 있는 구조를 가진 배터리 팩의 케이스에 관한 것이다.The present invention relates to a case of a battery pack, and more particularly, to a case of a battery pack having a structure capable of cooling a cell by delivering cooling water.
리튬 이차전지는 여러 개의 단위 셀들이 묶여서 하나의 팩으로 이루어짐으로써 자동차 배터리나 전력저장장치 등과 같이 고에너지를 필요로 하는 분야에 널리 적용된다.Lithium secondary batteries are widely applied to fields requiring high energy, such as automobile batteries or power storage devices, because a plurality of unit cells are bundled into one pack.
그런데, 여러개의 단위 셀들로 이루어진 배터리 팩은 과충전 시 발열과 함께 스웰링(Swelling)이 발생하여 모듈의 바깥 방향으로 볼록하게 팽창되는 변형이 발생하게 된다.However, a battery pack including a plurality of unit cells causes swelling with heat generation during overcharging and convex expansion occurs in the outward direction of the module.
상기와 같은 배터리 팩의 냉각을 위해 배터리 팩의 케이스 내부에는 냉각수를 흘려서 열교환이 이루어지도록 하는 냉각유로가 구비되는 것이 일반적이다.In order to cool the battery pack as described above, a cooling passage is generally provided inside the case of the battery pack to allow heat exchange to flow through the cooling water.
하지만, 종래의 냉각유로는 케이스 내부에서 공간을 많이 차지할 뿐만 아니라 냉각수의 누액이 발생할 경우 배터리의 고장이나 안전사고를 유발할 수 있는 취약점이 있다.However, the conventional cooling oil not only takes up a lot of space inside the case, but also has a vulnerability that may cause a battery failure or a safety accident when leakage of coolant occurs.
대안으로, 일본 공개특허공보 제2015-138773호에는 냉각액의 유로를 가지고, 정극 및 음극의 전극 단자를 설치한 전지 케이스에 복수개의 전지를 수용하고, 각전지를 냉각하는 냉각 장치에 있어서, 상기 전지 케이스내에 복수개의 통상의 전지 수용실을 설치하고, 각전지 수용실의 외주에 나선상의 유로를 형성하고, 상기 전지 수용실의 외주에 냉각액을 흘리고 각전지를 냉각하는 것을 특징으로 하는 냉각 장치가 개시되어 있다.In Japanese Laid-Open Patent Publication No. 2015-138773, alternatively, a plurality of batteries are housed in a battery case having a flow path of a cooling liquid and provided with electrode terminals of a positive electrode and a negative electrode, and each battery is cooled. Disclosed is a cooling apparatus characterized by providing a plurality of normal battery storage chambers in a case, forming a spiral flow path on the outer circumference of each battery housing chamber, flowing a coolant to the outer circumference of the battery housing chamber, and cooling each battery. It is.
그러나, 기존의 냉각 장치들은 냉각유로의 형성을 위한 배터리 팩 케이스의 구성이 복잡하여 조립 공정이 불편하고 생산성이 좋지 못한 취약점이 있어 이에 대한 대책이 요구되고 있다.However, the conventional cooling devices are complicated by the configuration of the battery pack case for the formation of the cooling flow path, so that the assembly process is inconvenient and the productivity is not good, there is a need for countermeasures.
본 발명은 상기와 같은 문제점을 고려하여 창안된 것으로서, 냉각유로가 케이스의 바깥쪽에 마련되어 냉각수의 누액으로 인한 배터리의 고장을 방지하고, 케이스에 결합되는 커버의 조립과 동시에 냉각유로가 형성될 수 있는 배터리 팩의 케이스 구조를 제공하는 데 그 목적이 있다.The present invention has been made in consideration of the above problems, the cooling flow path is provided on the outside of the case to prevent breakdown of the battery due to leakage of the coolant, and the cooling flow path can be formed at the same time as the assembly of the cover coupled to the case The purpose is to provide a case structure of a battery pack.
본 발명의 다른 목적은 냉각유로에 대해 냉각수의 전달이 간편하게 이루어질 수 있는 배터리 팩의 케이스 구조를 제공하는 데 있다.It is another object of the present invention to provide a case structure of a battery pack in which a coolant can be easily delivered to a cooling flow path.
상기와 같은 목적을 달성하기 위해 본 발명은 복수개의 셀을 수용할 수 있는 내부공간을 가진 수용부; 및 상기 수용부의 외부 밑부분에 정해진 패턴으로 형성되어 있는 냉각유로;를 포함하는 배터리 팩의 케이스 구조를 제공한다.In order to achieve the above object, the present invention includes a receiving portion having an inner space that can accommodate a plurality of cells; It provides a case structure of a battery pack comprising a; and a cooling flow path formed in a predetermined pattern on the outer bottom of the receiving portion.
상기 수용부의 상기 외부 밑부분에는 냉각유로 형성용 홈이 형성되어 있고, 상기 냉각유로 형성용 홈을 덮도록 상기 수용부의 외부에 결합되어 상기 냉각유로를 이루는 냉각유로 커버;를 구비할 수 있다.Cooling passage forming grooves are formed in the outer bottom portion of the accommodating portion, and a cooling passage cover coupled to the outside of the accommodating portion to cover the cooling passage forming grooves to form the cooling passage.
상기 냉각유로 커버는 상기 수용부의 외부에 볼트 결합되는 것이 바람직하다.The cooling passage cover is preferably bolted to the outside of the receiving portion.
상기 수용부는 케이스 내에서 이격된 적어도 두 영역에 구비되고, 인접한 수용부들 사이에는 단면이 '∩'자 형상인 냉각수 전달 유로를 가진 관형부가 상기 수용부들의 바닥면에 대하여 돌출 형성되고, 상기 관형부의 상기 냉각수 전달 유로 부분은 케이스 외부에 위치하여 상기 냉각유로에 냉각수를 전달하는 것이 바람직하다.The accommodating portion is provided in at least two regions spaced apart from each other, and between adjacent accommodating portions, a tubular portion having a coolant delivery flow path having a '∩' shape in cross section protrudes from a bottom surface of the accommodating portions, and The cooling water delivery flow path portion is preferably located outside the case to deliver the cooling water to the cooling flow path.
상기 냉각유로는 지그재그 패턴을 포함하도록 형성될 수 있다.The cooling passage may be formed to include a zigzag pattern.
본 발명에 따르면 냉각유로를 케이스 외부에 형성함으로써 냉각수의 누액으로 인한 배터리 팩의 고장이나 손상을 방지할 수 있다.According to the present invention, by forming the cooling flow path outside the case, it is possible to prevent a failure or damage of the battery pack due to leakage of the cooling water.
본 발명은 케이스에 커버를 결합함으로써 용이하게 냉각유로가 형성될 수 있으며, 볼트를 이용해 냉각유로 커버를 결합함으로써 공정성 향상과 비용절감의 효과가 있다.The present invention can be easily formed by coupling the cover to the case, the cooling flow path can be easily formed, by combining the cooling flow path cover using the bolt has the effect of improving the processability and cost.
또한, 냉각수의 전달을 위한 관형부가 케이스 본체에 일체화되어 있으므로 외부에 냉각수의 전달을 위한 별도의 관이나 호스를 구비할 필요가 없는 장점이 있다.In addition, since the tubular part for delivering the coolant is integrated with the case body, there is no need to provide a separate pipe or a hose for delivering the coolant to the outside.
본 명세서에 첨부되는 다음의 도면들은 본 발명의 바람직한 실시예를 예시하는 것이며, 후술되는 발명의 상세한 설명과 함께 본 발명의 기술사상을 더욱 이해시키는 역할을 하는 것이므로, 본 발명은 그러한 도면에 기재된 사항에만 한정되어 해석되어서는 아니된다.The following drawings attached to this specification are illustrative of the preferred embodiments of the present invention, and together with the detailed description of the invention to serve to further understand the technical spirit of the present invention, the present invention is a matter described in such drawings It should not be construed as limited to.
도 1은 본 발명의 바람직한 실시예에 따른 배터리 팩의 케이스 구조를 도시한 사시도,1 is a perspective view showing a case structure of a battery pack according to an embodiment of the present invention,
도 2는 도 1의 저면 구성을 도시한 사시도,2 is a perspective view showing the bottom configuration of FIG.
도 3은 도 2의 분해 사시도이다.3 is an exploded perspective view of FIG. 2.
도 1은 본 발명의 바람직한 실시예에 따른 배터리 팩의 케이스 구조를 도시한 사시도, 도 2는 도 1의 저면 구성을 도시한 사시도, 도 3은 도 2의 분해 사시도이다.1 is a perspective view showing a case structure of a battery pack according to a preferred embodiment of the present invention, Figure 2 is a perspective view showing the bottom configuration of Figure 1, Figure 3 is an exploded perspective view of FIG.
도 1 내지 도 3을 참조하면, 본 발명의 바람직한 실시예에 따른 배터리 팩의 케이스 구조는 복수개의 셀이 수용되는 수용부(110)와, 수용부(110)의 외부 밑부분에 형성된 냉각유로(122)를 가진 케이스 본체(100)를 구비한다.1 to 3, a case structure of a battery pack according to an exemplary embodiment of the present invention includes a receiving part 110 in which a plurality of cells are accommodated, and a cooling flow path formed at an outer bottom of the receiving part 110 ( And a case body 100 having a body 122.
케이스 본체(100)는 케이스 구조의 하부가 되는 부분으로서, 알루미늄과 같이 열전달 성능이 상대적으로 우수한 금속 재질로 이루어지는 것이 바람직하다.The case body 100 is a portion that becomes a lower part of the case structure, and preferably made of a metal material having relatively excellent heat transfer performance, such as aluminum.
수용부(110)의 공간에 수납되는 셀은, 예컨대 파우치형 이차전지와 같이 전체적으로 사각형을 이루고 두께가 얇은 판상의 몸체를 가진 통상의 리튬이온 이차전지가 채용될 수 있다. 복수개의 셀은 수용부(110)의 내부공간에 적층되는 형태로 배치된다.The cell accommodated in the space of the accommodating part 110 may be a conventional lithium ion secondary battery having a plate-like body which is generally rectangular and has a thin thickness, such as a pouch type secondary battery. The plurality of cells are arranged to be stacked in the inner space of the receiving unit 110.
셀이 수용된 상태에서 케이스 본체(100)의 상부에는 소정 형상의 상부 케이스(미도시)가 긴밀히 조립되어 케이스 본체(100)의 상부를 폐쇄한다.In the state where the cell is accommodated, an upper case (not shown) having a predetermined shape is tightly assembled on the upper portion of the case body 100 to close the upper portion of the case body 100.
수용부(110)는 케이스 본체(100) 내에서 이격된 적어도 두 영역에 구비되고, 인접한 수용부(110)들 사이에는 단면이 '∩'자 형상인 냉각수 전달 유로(121)를 가진 관형부(120)가 수용부(110)들의 내부 바닥면에 대하여 돌출 형성되어 있다.The accommodating part 110 is provided in at least two regions spaced apart from the case body 100, and between the adjacent accommodating parts 110 has a tubular part having a coolant delivery passage 121 having a '∩' shape in cross section. 120 protrudes from the inner bottom surface of the receiving parts 110.
관형부(120)의 냉각수 전달 유로(121)는 케이스 본체(100)의 밑부분 외부에 위치하여 냉각유로(122)에 냉각수를 전달한다. 이를 위해, 관형부(120)의 냉각수 전달 유로(121)와 냉각유로(122)는 케이스의 조립이 완료되었을 때 서로 연통되도록 형성된다. 이를 위해, 케이스 본체(100)에는 냉각유로(122)의 적어도 한쪽 끝부분을 냉각수 전달 유로(121)와 연통시키는 소정 패턴의 홈이나 통로가 마련될 수 있다.The coolant delivery channel 121 of the tubular part 120 is located outside the bottom of the case body 100 to transfer the coolant to the cooling channel 122. To this end, the cooling water delivery passage 121 and the cooling passage 122 of the tubular portion 120 are formed to communicate with each other when the assembly of the case is completed. To this end, the case body 100 may be provided with a groove or a passage of a predetermined pattern for communicating at least one end of the cooling passage 122 with the cooling water transfer passage 121.
도 3에 나타난 바와 같이 케이스 본체(100)의 저면, 즉 수용부(110)의 외부 밑부분에는 단면이 예컨대, '∪'자 형상으로 이루어져서 일부가 개방되어 있는 홈 구조의 냉각유로(122)가 형성되어 있고, 케이스 본체(100)의 저면에는 냉각유로(122)의 개방된 부분을 덮어서 냉각수가 흐를 수 있는 완전한 유로를 이루는 냉각유로 커버(111)가 결합된다. 케이스 본체(100)의 한정된 저면 면적 내에서 냉각효율을 높이기 위해, 냉각유로(122)는 지그재그 패턴을 포함하도록 형성되는 것이 바람직하다.As shown in FIG. 3, the bottom surface of the case body 100, that is, the outer bottom portion of the accommodating part 110, has a cooling passage 122 having a groove structure in which a cross section is formed, for example, in a '∪' shape. The cover 111 is formed on the bottom surface of the case body 100 to cover the open portion of the cooling flow passage 122 to form a complete flow passage through which the cooling water flows. In order to increase the cooling efficiency within the limited bottom area of the case body 100, the cooling passage 122 is preferably formed to include a zigzag pattern.
냉각유로 커버(111)는 바람직하게, 금속 플레이트로 이루어지고, 케이스 본체(100)의 저면에 위치한 수용부(110)의 외부에 다수의 볼트(113)에 의해 결합되어 냉각유로(122)의 개방된 부분을 덮음으로써 완전한 유로를 형성한다. 누액 방지를 위해 냉각유로 커버(111)와 케이스 본체(100) 사이에는 예컨대, 고무 소재의 실링부재(112)가 개재되는 것이 바람직하다.Cooling flow path cover 111 is preferably made of a metal plate, coupled to the outside of the receiving portion 110 located on the bottom of the case body 100 by a plurality of bolts 113 to open the cooling flow path 122 Covering the formed part forms a complete flow path. For example, a rubber sealing member 112 may be interposed between the cooling passage cover 111 and the case body 100 to prevent leakage.
상기와 같은 구성을 가진 본 발명의 바람직한 실시예에 따른 케이스 구조는 수용부(110) 바깥 부분에 냉각수 전달 유로(121)와 냉각유로(122)가 위치하여 냉각수의 순환이 이루어지므로 냉각수의 누액이 발생하더라도 수용부(110)의 내부로 냉각수가 침투하지 않으므로 셀을 안전하게 보호할 수 있다.In the case structure according to the preferred embodiment of the present invention having the configuration as described above, the coolant delivery passage 121 and the cooling passage 122 are located at the outer portion of the accommodating part 110, so that the cooling water is circulated and the leakage of the cooling water is maintained. Even if it occurs, the cooling water does not penetrate into the interior of the accommodating part 110, thereby protecting the cell safely.
또한, 케이스 본체(100)의 저면에 냉각유로 커버(111)가 조립됨과 동시에 냉각수가 흐를 수 있는 완전한 유로가 형성되므로 조립 공정성이 좋고, 냉각수 전달 유로(121)를 형성하는 관형부(120)가 케이스 본체(100)에 일체화되어 있으므로 냉각수의 전달을 위한 별도의 관이나 호스를 마련할 필요가 없어 배터리 팩의 구조를 간소화할 수 있다.In addition, since the cover 111 is assembled to the bottom surface of the case body 100 and a complete flow path through which the coolant flows is formed, the assembly processability is good, and the tubular part 120 forming the coolant delivery flow path 121 is formed. Since it is integrated in the case body 100, it is not necessary to provide a separate pipe or hose for the delivery of the coolant can simplify the structure of the battery pack.
본 발명을 적용할 경우 케이스 본체의 외부에 냉각유로가 형성되어 냉각성능이 향상되면서도 냉각수의 누액으로부터 셀을 안전하게 보호할 수 있다.When the present invention is applied, a cooling flow path is formed on the outside of the case body to improve the cooling performance while protecting the cell from leakage of the cooling water.

Claims (5)

  1. 복수개의 셀을 수용할 수 있는 내부공간을 가진 수용부; 및Receiving unit having an internal space that can accommodate a plurality of cells; And
    상기 수용부의 외부 밑부분에 정해진 패턴으로 형성되어 있는 냉각유로;를 포함하는 배터리 팩의 케이스 구조.Case structure of a battery pack comprising a; cooling passages formed in a predetermined pattern on the outer bottom of the receiving portion.
  2. 제1항에 있어서,The method of claim 1,
    상기 수용부의 상기 외부 밑부분에는 냉각유로 형성용 홈이 형성되어 있고,The outer bottom portion of the receiving portion is formed with a cooling oil forming groove,
    상기 냉각유로 형성용 홈을 덮도록 상기 수용부의 외부에 결합되어 상기 냉각유로를 이루는 냉각유로 커버;를 구비한 것을 특징으로 하는 배터리 팩의 케이스 구조.And a cooling flow path cover coupled to the outside of the accommodation portion to cover the cooling flow path forming groove to form the cooling flow path.
  3. 제2항에 있어서,The method of claim 2,
    상기 냉각유로 커버는 상기 수용부의 외부에 볼트 결합된 것을 특징으로 하는 배터리 팩의 케이스 구조.The cooling passage cover is the case structure of the battery pack, characterized in that bolted to the outside of the receiving portion.
  4. 제1항에 있어서,The method of claim 1,
    상기 수용부는 케이스 내에서 이격된 적어도 두 영역에 구비되고,The receiving portion is provided in at least two areas spaced apart in the case,
    인접한 수용부들 사이에는 단면이 '∩'자 형상인 냉각수 전달 유로를 가진 관형부가 상기 수용부들의 바닥면에 대하여 돌출 형성되고,Between adjacent receptacles, a tubular part having a coolant delivery passage having a '∩' shape in cross section protrudes from the bottom surface of the receptacles,
    상기 관형부의 상기 냉각수 전달 유로 부분은 케이스 외부에 위치하여 상기 냉각유로에 냉각수를 전달하는 것을 특징으로 하는 배터리 팩의 케이스 구조.The cooling water delivery passage portion of the tubular portion is located outside the case to transfer the cooling water to the cooling passage.
  5. 제1항에 있어서,The method of claim 1,
    상기 냉각유로는 지그재그 패턴을 포함하도록 형성되어 있는 것을 특징으로 하는 배터리 팩의 케이스 구조.The cooling passage case structure of the battery pack, characterized in that formed to include a zigzag pattern.
PCT/KR2017/002335 2016-03-03 2017-03-03 Case structure of battery pack having improved cooling performance WO2017150941A2 (en)

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KR1020160025761A KR102066701B1 (en) 2016-03-03 2016-03-03 Battery pack case improved in coolong performance

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