WO2018030821A1 - Bloc-batterie ayant une structure de refroidissement améliorée - Google Patents

Bloc-batterie ayant une structure de refroidissement améliorée Download PDF

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Publication number
WO2018030821A1
WO2018030821A1 PCT/KR2017/008703 KR2017008703W WO2018030821A1 WO 2018030821 A1 WO2018030821 A1 WO 2018030821A1 KR 2017008703 W KR2017008703 W KR 2017008703W WO 2018030821 A1 WO2018030821 A1 WO 2018030821A1
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WO
WIPO (PCT)
Prior art keywords
pack
battery pack
pack case
case
coolant
Prior art date
Application number
PCT/KR2017/008703
Other languages
English (en)
Korean (ko)
Inventor
서성원
문정오
이윤구
최미금
Original Assignee
주식회사 엘지화학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to CN201790000490.2U priority Critical patent/CN208401005U/zh
Publication of WO2018030821A1 publication Critical patent/WO2018030821A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—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
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • 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
    • H01M10/65—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
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/317—Re-sealable arrangements
    • H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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 battery pack in which a coolant is used, and more particularly, to a battery pack having a structure that prevents a temperature increase of a cell by supplying a coolant to a case accommodating a cell.
  • 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.
  • Korean Patent Laid-Open Publication No. 2013-0064969 discloses a heat dissipation unit of a battery cell in which heat exchange efficiency is improved and stable heat dissipation of a battery cell is achieved by exchanging a plurality of battery cells and a heat dissipation module in close contact with each other. have.
  • Korean Patent Laid-Open Publication No. 2013-0105653 has a structure to enable a flow path for delivering the coolant in a uniform and well-dispersed manner, and the rubber sheet of the front and rear cover to change the flow direction of the coolant Is disclosed, wherein a power battery pack cooling device is provided that provides a path for cooling water to flow throughout the array.
  • the coolant is supplied through a cooling tube or a cooling duct, and thus the temperature of the battery cell is determined by factors such as an event occurrence of the battery cell, that is, overcharge.
  • the temperature of the battery cell is determined by factors such as an event occurrence of the battery cell, that is, overcharge.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a battery pack having a structure for improving cooling efficiency by using a phase change of a cooling liquid.
  • Another object of the present invention is to provide a battery pack having a structure that can smoothly discharge the cooling gas generated by the phase change to the outside.
  • the present invention to achieve the above object is a plurality of cells arranged at a predetermined interval; A pack case having an inner space for accommodating the plurality of cells; And a coolant flowing into an inner space of the pack case and in direct contact with the cell and causing a phase change from a liquid state to a gas state by an increase in temperature of the cell.
  • the pack case may include a case body having a bottom surface capable of supporting the plurality of cells, and an upper cover which is tightly coupled to the case body.
  • At least one of the rectangular case portion and the cover portion may be formed with a lattice rib structure for imparting rigidity.
  • One side of the pack case may be provided with a coolant inlet pipe communicating with the inner space, the other side may be provided with a coolant outlet pipe communicating with the inner space.
  • the pack case may be sealed while the coolant is introduced.
  • the pack case may be provided with a venting valve for discharging the gas generated by the phase change to the outside of the pack case.
  • At least a part of the pack case may be made of a Gore-tex material that can discharge the gas generated by the phase change to the outside of the pack case.
  • cooling liquid cooling water or insulating oil having a boiling point of 150 ° C. or more may be introduced.
  • the plurality of cells may form a matrix and be arranged at predetermined intervals.
  • a plurality of cells arranged at predetermined intervals and an internal space for accommodating the coolant directly contacting the plurality of cells, at least a portion of the coolant according to the temperature rise of the cell
  • the pack case of the battery pack is provided with a venting valve for discharging the gas generated by the phase change of the outside.
  • a plurality of cells arranged at a predetermined interval and an internal space for accommodating a coolant in direct contact with the plurality of cells, at least part of the Provided is a pack case of a battery pack, comprising a Gore-Tex material capable of discharging gas generated by a phase change of a coolant to the outside.
  • the cooling efficiency can be improved.
  • the gas generated in the process of the phase change of the coolant can be discharged to the outside through the pack case to prevent the occurrence of additional events such as internal pressure rise.
  • FIG. 1 is an exploded perspective view of a battery pack according to a preferred embodiment of the present invention.
  • FIG. 2 is a cross sectional view of FIG. 1.
  • FIG. 1 is an exploded perspective view of a battery pack according to a preferred embodiment of the present invention
  • Figure 2 is a cross-sectional view of the combination of FIG.
  • a battery pack directly contacts the cell 100 together with the plurality of cells 100 arranged at a predetermined interval and the plurality of cells 100. It includes a pack case 110 for receiving the coolant (1) introduced to.
  • Each cell 100 is preferably constituted by a pouch type secondary battery, and each is sealed to prevent water from penetrating therein.
  • the plurality of cells 100 are arranged to form a matrix pattern at predetermined intervals inside the pack case 110 so as to minimize the influence on the adjacent cells 100 when an event due to overcharge, high temperature, physical shock, or the like occurs.
  • the pack case 110 may be formed in various forms as a portion that wraps and supports the plurality of cells 100. In order to accommodate a plurality of cells 100 while efficiently utilizing a limited space, the pack case 110 preferably has a rectangular or square body.
  • the pack case 110 includes a case body 110a having a bottom surface capable of supporting a plurality of cells 100, and an upper cover 110b tightly coupled to the case body 110a in a watertight manner. .
  • a sealing member such as an O-ring is interposed between the case body 110a and the upper cover 110b to form a watertight seal or a fusion portion is formed.
  • the inner space 112 of the case main body 110a is partitioned by the partition wall 111 so that each cell 100 can be individually stored.
  • a plurality of cells 100 may be arranged in a stacked form.
  • the height of the space surrounded by the partition wall 111 is preferably designed to be larger than the height (thickness) of the cell 100 so as to secure a space in which the coolant 1 may be filled.
  • the partition wall 111 may also provide a function of providing rigidity to the case body 110a.
  • the upper cover 110b is preferably provided with a lattice rib structure 116 for imparting rigidity.
  • the grid-shaped rib structure 116 serves to maintain the shape of the upper cover 110b.
  • the lattice rib structure 116 is preferably made of a pattern corresponding to the partition formed in the lattice form on the case body (110a).
  • One side of the pack case 110 is provided with a coolant inlet tube 113 communicating with the inner space 112, and the other side is provided with a coolant outlet tube 114 communicating with the inner space 112.
  • This configuration provides a function to circulate the coolant 1 inside the pack case 110. That is, the coolant 1 introduced into the internal space 112 of the pack case 110 through the coolant inlet tube 113 directly contacts the cell 100 to provide a cooling function and provides a coolant outlet tube 114. After discharged to the outside through the cooling can be circulated in a manner that is introduced into the coolant inlet pipe 113 again.
  • the pack case 110 may be completely sealed by sealing the edges by fusion or the like while the coolant 1 is introduced into the inner space 112.
  • the coolant 1 maintains the state contained in the pack case 110 and provides a cooling function by contacting the cell 100 in a non-circulating manner.
  • a vent valve 115 for discharging the gas generated by the phase change to the outside of the pack case 110 while blocking the outflow of the coolant 1 in the upper cover 110b. is installed.
  • Gore-Tex material that can be ejected.
  • the cell 100 disposed in the inner space of the pack case 110 has an operating temperature of 80 ° C. or lower at a normal state. However, when an event occurs due to factors such as overcharge, high temperature, and physical shock, the temperature may be about 200 ° C. Rises. In consideration of this point, it is preferable that a cooling water or insulating oil having a boiling point of 150 ° C. or more is introduced into the cooling liquid 1 flowing into the inner space of the pack case 110.
  • the cooling liquid 1 introduced into the inner space of the pack case 110 is directly in contact with the plurality of cells 100 to cool the heat generated in the cell 100 through circulation or latent heat of the cooling liquid 1. Let's do it.
  • the temperature of the cell 100 is excessively increased by causing the coolant 1 to undergo a phase change from the liquid state to the gas state due to the temperature increase of the cell 100. prevent.
  • the temperature is adjusted so that the battery cell 100 may be cooled so that the battery cell 100 is lower than or equal to the event occurrence temperature, thereby avoiding an event situation. Since the gas generated by the phase change is discharged to the outside through the venting valve 115 or the gore-tex material provided in the pack case 110, an additional event such as an internal pressure increase of the pack case 110 may be prevented. .
  • the temperature rise of the cell is suppressed by the phase change of the coolant in direct contact with the cell when an event occurs in the battery cell, thereby improving the cooling efficiency of the battery pack.

Abstract

La présente invention concerne un bloc-batterie comprenant : une pluralité de cellules agencées avec un espace prédéterminé entre elles; un boîtier de bloc ayant un espace interne apte à recevoir la pluralité de cellules; et un liquide de refroidissement qui est introduit dans l'espace interne du boîtier de bloc pour venir en contact direct avec la cellule, puis pour subir un changement de phase d'un état liquide à un état gazeux en raison de l'élévation de température de la cellule.
PCT/KR2017/008703 2016-08-10 2017-08-10 Bloc-batterie ayant une structure de refroidissement améliorée WO2018030821A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201790000490.2U CN208401005U (zh) 2016-08-10 2017-08-10 具有改进的冷却结构的电池组和电池组的组件壳体

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0101935 2016-08-10
KR1020160101935A KR102075101B1 (ko) 2016-08-10 2016-08-10 냉각 구조가 개선된 배터리 팩

Publications (1)

Publication Number Publication Date
WO2018030821A1 true WO2018030821A1 (fr) 2018-02-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/008703 WO2018030821A1 (fr) 2016-08-10 2017-08-10 Bloc-batterie ayant une structure de refroidissement améliorée

Country Status (3)

Country Link
KR (1) KR102075101B1 (fr)
CN (1) CN208401005U (fr)
WO (1) WO2018030821A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114464914A (zh) * 2021-11-08 2022-05-10 美嘉帕拉斯特汽车零部件（上海）有限公司 一种具有冷却板的电池组装置

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
KR102325438B1 (ko) 2018-04-25 2021-11-10 주식회사 엘지에너지솔루션 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차
KR102311087B1 (ko) * 2018-09-19 2021-10-07 주식회사 엘지에너지솔루션 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차
KR20200104619A (ko) 2019-02-27 2020-09-04 에이치엘그린파워 주식회사 배터리팩 구조
KR20220075045A (ko) * 2020-11-26 2022-06-07 주식회사 엘지에너지솔루션 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차
KR20230162850A (ko) * 2022-05-20 2023-11-29 주식회사 엘지에너지솔루션 각형 이차전지
KR20240019649A (ko) * 2022-08-04 2024-02-14 주식회사 엘지에너지솔루션 전지팩
KR20240031609A (ko) * 2022-09-01 2024-03-08 주식회사 엘지에너지솔루션 안전성이 향상된 배터리 팩
KR20240031611A (ko) * 2022-09-01 2024-03-08 주식회사 엘지에너지솔루션 안전성이 향상된 배터리 팩

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KR20160034675A (ko) * 2014-09-22 2016-03-30 주식회사 엘지화학 냉각부재로서 윅을 사용하는 판형 열전달장치를 갖는 전지모듈

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EP2617081B1 (fr) 2011-01-24 2014-10-01 Guoan Feng Appareil de refroidissement pour blocs-batteries
KR101199148B1 (ko) * 2011-04-21 2012-11-09 에스비리모티브 주식회사 배터리 모듈
KR101282473B1 (ko) * 2011-09-21 2013-07-04 로베르트 보쉬 게엠베하 배터리 팩
KR101367210B1 (ko) 2011-12-09 2014-02-27 대한칼소닉주식회사 배터리 셀의 방열유닛

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KR20040011020A (ko) * 2002-07-26 2004-02-05 이현상 전자장비 냉각장치
KR200389453Y1 (ko) * 2005-04-20 2005-07-18 함태흥 배터리 가스 배출이 가능한 은이온수 발생장치
KR20110070199A (ko) * 2009-12-18 2011-06-24 에스비리모티브 주식회사 배터리 팩
KR20100041727A (ko) * 2010-04-04 2010-04-22 임재현 배터리 온도조절을 위한 냉난방장치
KR20160034675A (ko) * 2014-09-22 2016-03-30 주식회사 엘지화학 냉각부재로서 윅을 사용하는 판형 열전달장치를 갖는 전지모듈

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114464914A (zh) * 2021-11-08 2022-05-10 美嘉帕拉斯特汽车零部件（上海）有限公司 一种具有冷却板的电池组装置
CN114464914B (zh) * 2021-11-08 2024-02-23 美嘉帕拉斯特汽车零部件（上海）有限公司 一种具有冷却板的电池组装置

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Publication number Publication date
KR102075101B1 (ko) 2020-03-02
KR20180017695A (ko) 2018-02-21
CN208401005U (zh) 2019-01-18

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