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WO2018209776A1 - Module de batterie et système de batterie d'alimentation - Google Patents

Module de batterie et système de batterie d'alimentation Download PDF

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Publication number
WO2018209776A1
WO2018209776A1 PCT/CN2017/091706 CN2017091706W WO2018209776A1 WO 2018209776 A1 WO2018209776 A1 WO 2018209776A1 CN 2017091706 W CN2017091706 W CN 2017091706W WO 2018209776 A1 WO2018209776 A1 WO 2018209776A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
battery module
battery
module according
cylindrical battery
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2017/091706
Other languages
English (en)
Chinese (zh)
Inventor
龚骁
葛增芳
王全明
方杰
刘宇
王林峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIO Nextev Ltd
Original Assignee
Nextev Ltd
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 Nextev Ltd filed Critical Nextev Ltd
Publication of WO2018209776A1 publication Critical patent/WO2018209776A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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 utility model relates to a power battery system. More specifically, the utility model relates to a battery module in which a cooling fluid directly contacts a battery unit according to a specific flow path and a power battery system therewith.
  • the power battery system is the core component of new energy vehicles.
  • a power battery system generally includes a plurality of battery modules composed of battery cells.
  • factors such as power battery safety, energy density, life, and cost.
  • cylindrical lithium batteries have been widely used in the electric vehicle market, and they have high energy density characteristics.
  • more heat is generated during operation, and heat dissipation for the power battery system is also Higher requirements were raised.
  • the heat dissipation scheme of the power battery system includes: an air-cooled cooling system, which is large in volume and low in cooling efficiency; the liquid-cooled cooling system, in which the cooling plate or the cooling pipe is not directly in contact with the battery, passes through the heat conductive resin material and the battery surface. Heat transfer reduces cooling efficiency while manufacturing and maintenance costs are high.
  • the purpose of the utility model is to solve or at least alleviate the problems existing in the prior art power battery cooling system
  • the object is also to improve the efficiency of the power battery cooling system
  • the object is also to simplify the structure of the power battery cooling system and reduce the cost thereof;
  • the object is also to improve the safety of the power battery cooling system
  • a battery module including:
  • a housing defining a liquid inlet and a liquid outlet, from which the cooling fluid enters the housing, and Output from the housing from the liquid outlet;
  • cylindrical battery cells disposed in the housing, the cylindrical battery cells having electrodes at both ends, the electrodes of the cylindrical battery cells having corresponding openings from opposite sides of the housing
  • a seal disposed between an opposite side of the housing and both ends of the cylindrical battery cell, the seal preventing cooling fluid from flowing out of the corresponding opening;
  • a busbar of the electrodes of each of the cylindrical battery cells is connected outside the casing.
  • the cylindrical battery cell has a circular or square cross section.
  • the cylindrical battery cells are positioned in the housing by a limiting slot at a corresponding opening of the opposite side.
  • a baffle is further disposed in the housing of the battery module, and the baffle guides the cooling fluid to flow in the housing according to a defined flow path.
  • the baffle defines an S-shaped defined flow path or an M-shaped defined flow path.
  • the housing is a cube, and the housing comprises a bottom plate, a top plate, a first side plate, a second side plate, and a first end plate and a second end plate.
  • the liquid inlet and the liquid outlet are respectively disposed at the first end plate and the second end plate of the housing.
  • the cooling fluid is an insulating flame retardant liquid.
  • the opposite side of the housing having a corresponding opening is made of a plastic material, and other portions of the housing are made of a metal material.
  • a power battery system for a new energy vehicle including a battery module in accordance with various embodiments of the present invention.
  • the battery module and power battery system according to the present invention have improved cooling efficiency.
  • FIG. 1 shows an exploded view of a battery module in accordance with an embodiment of the present invention
  • FIG. 2 shows an assembled view of a battery module in accordance with an embodiment of the present invention
  • FIG. 3 illustrates a cross-sectional flow path view of a battery module in accordance with an embodiment of the present invention
  • FIG. 4 shows a cross-sectional flow path view of a battery module in accordance with another embodiment of the present invention.
  • top, bottom, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined with respect to the configurations shown in the respective drawings, which are Relative concepts, so it is possible to change accordingly according to their different locations and different usage states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.
  • the illustrated battery module generally includes a housing 10 defining a liquid inlet and a liquid outlet.
  • the inlet and outlet of the housing have connectors 21 and 22, respectively. It can be coupled to an external cooling fluid line to provide cooling fluid into the housing 10.
  • the cooling fluid can enter the housing 10 from the inlet and exit the housing 10 from the outlet.
  • the inlet and outlet ports may be arranged upside down, and in alternative embodiments, there may be multiple inlets and/or multiple outlets.
  • the battery module further includes a series of cylindrical battery cells 3 disposed in the housing 10, the cylindrical battery cells 3 having electrodes 31, 32 at both ends, and electrodes of the cylindrical battery cells 3 from the housing 10
  • the corresponding opening 141 of the opposite sides 13, 14 is exposed (the corresponding opening at the bottom side 13 is difficult to see).
  • a structure of 14 rows and 4 columns of 56 cylindrical battery cells 3 is employed.
  • the arrangement and number of cylindrical battery cells can be changed, such as a cylindrical battery.
  • the monomers may also be arranged in a staggered manner, and the number of rows, the number of columns, and the number of the cylindrical battery cells may vary.
  • the battery module further includes seals 41 and 42 disposed at opposite sides of the housing 10, the seals 41 and 42 being provided on the top side of the housing 10, the bottom side being between the ends of the cylindrical battery cells, thereby The cooling fluid is prevented from flowing out of the housing 10 through the corresponding opening.
  • the battery module further includes a busbar (not shown) that connects the electrodes of the cylindrical battery cells 3 outside the casing 10 (the outside of the bottom side 13 and the top side 14), and each of the cylindrical battery cells 3 may be connected in series or in parallel or Connect the power supply circuit in any other way.
  • the housing 10 of the battery module together with the electrode sides of the two ends of the cylindrical battery unit define a cooling fluid chamber, so that the busbars, wires and the like of the battery can be arranged in the cooling fluid chamber.
  • the busbars, wires and the like of the battery can be arranged in the cooling fluid chamber.
  • the cylindrical battery cell 3 has a circular cross-sectional shape, that is, the cylindrical battery cell 3 has a cylindrical shape.
  • the cylindrical battery cells 3 may also have cross-sections of other shapes, such as square, elliptical, and the like.
  • the position of the cylindrical battery cells 3 in the housing 10 can be positioned by opposing stops on the opposite sides of the housing, such as the bottom side 13 and the corresponding opening 141 of the top side 14, each cylindrical battery The cells can be inserted in the positioning slots and the electrodes are exposed from the corresponding openings.
  • the housing 10 is substantially cubic, and the housing 10 includes a bottom plate 13, a top plate 14, a first side panel 11, a second side panel 12, and a first end panel 15, a second end panel 16.
  • the housing 10 can have other suitable shapes.
  • the various portions of the housing 10 can be joined by snapping, gluing, laser welding or bolting or other suitable technical means.
  • the liquid inlet and the liquid outlet are respectively disposed at the first end plate 15 and the second end plate 16 of the housing.
  • the inlet and outlet ports may also be arranged in other suitable locations, such as near the first side panel 11 or the second side panel 12 or the floor panel 13 or the top panel 14 adjacent the first end panel.
  • the seals 41 and 42 respectively include 14 seal units corresponding to each row of cylindrical battery cells 3 to cover both ends of the cylindrical battery unit 3, in an alternative embodiment, The seals 41 and 42 may be formed in various ways to cover the various numbers of cylindrical battery cells 3, or the seals 41 and 42 may be integrally formed to cover all of the cylindrical battery cells 3.
  • the opposite side of the housing 10 has a corresponding opening, such as a bottom side 13 and a top side 14, which can be made of a plastic material so that corresponding openings can be easily formed and, in addition, the housing 10
  • the other portions, that is, the first side wall 11, the second side wall 12, the first end wall 15 and the second end wall 16 may be made of a metal material such as an aluminum-based material, which enhances the strength and reinforcement of the entire casing 10.
  • the heat dissipation of the housing 10 also meets the requirements for lightweight.
  • FIG. 3 a cross-sectional view of the housing 10 of the battery module in accordance with the embodiment of FIGS. 1 and 2 is shown in which the flow path of the cooling fluid is shown.
  • the cooling fluid enters the inside of the casing from the inlet port, and then branches and flows around the side of the cylindrical battery cell 3 to sufficiently contact the side surface of the cylindrical battery unit 3, thereby carrying away the heat emitted from the cylindrical battery unit 3. Since the electrodes of the cylindrical battery unit 3 and the bus bars connecting the electrodes in the present application, the wires and the like are all outside the housing 10 defining the cooling fluid chamber, direct contact of these components with the cooling fluid is avoided and thus may be brought about The problem.
  • the cooling fluid may be selected from an insulating flame retardant liquid, in which case it may act as a flame retardant even when the battery module is subjected to intense compression or puncture to prevent damage to the battery cell pair. Influence of other battery cells around, delay The delay in the late accidents will improve the safety of the power battery system to some extent.
  • FIG. 4 a cross-sectional flow view of a battery module in accordance with another embodiment of the present invention is shown.
  • the housing 10 of the battery module is further provided with baffles 61, 62 which direct the cooling fluid to flow in the housing 10 in a defined flow path.
  • the baffles 61, 62 extend from the first end wall 15 and the second end wall 16, respectively, toward the interior of the housing 10, thereby with the first side wall 11 of the housing, second Side wall 12, first end wall 15 and second end wall 16 together define an S-shaped defined flow path as indicated by arrow F.
  • the arrangement of the baffles can be varied, for example, the baffles can extend from the first side wall 11 and the second side wall 12 toward the middle of the housing 10 and define an M-shape together with the housing 10. Define a flow path, or other type of flow path. In the S-shaped defined flow path and the M-shaped defined flow path, the cooling fluid is sequentially brought into contact with the respective cylindrical battery cells to serve as a cooling function.
  • the baffles may also define a plurality of parallel rows. Limit the flow path. It will be appreciated that those skilled in the art will recognize other baffle arrangements that do not depart from the scope of the present application.
  • the present application is also directed to protecting a power battery system including battery modules of various embodiments of the present invention.
  • the battery module Since the cooling circuit and related parts are omitted, the battery module has a simpler structure, fewer parts, lighter weight, smaller volume, and higher energy density;

Landscapes

  • 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)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un module de batterie et un système de batterie d'alimentation. Le module de batterie comprend : une coque (1), la coque définissant une entrée de liquide et une sortie de liquide, et un fluide de refroidissement entrant dans la coque (10) à partir de l'entrée de liquide et sortant de la coque (10) à partir de la sortie de liquide; une série d'éléments de batterie cylindriques (3) disposés dans la coque (10), chacun des éléments de batterie cylindriques (3) ayant des électrodes (31, 32) à deux extrémités, et les électrodes (31, 32) d'élément de batterie cylindrique (3) étant exposées à partir d'ouvertures correspondantes (141) sur des côtés opposés (13, 14) de la coque (10); des éléments d'étanchéité (41, 42) disposés entre les côtés opposés (13, 14) de la coque (10) et les deux extrémités de l'élément de batterie cylindrique (3), les éléments d'étanchéité (41, 42) empêchant le fluide de refroidissement de s'écouler hors des ouvertures correspondantes (141); et une barre omnibus connectée, à l'extérieur de la coque (10), aux électrodes (31, 32) des éléments de batterie cylindriques (3). Le module de batterie et le système de batterie d'alimentation présentent une efficacité de refroidissement améliorée.
PCT/CN2017/091706 2017-05-16 2017-07-04 Module de batterie et système de batterie d'alimentation Ceased WO2018209776A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720537533.2U CN207021355U (zh) 2017-05-16 2017-05-16 电池模组以及动力电池系统
CN201720537533.2 2017-05-16

Publications (1)

Publication Number Publication Date
WO2018209776A1 true WO2018209776A1 (fr) 2018-11-22

Family

ID=61475670

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/091706 Ceased WO2018209776A1 (fr) 2017-05-16 2017-07-04 Module de batterie et système de batterie d'alimentation

Country Status (3)

Country Link
CN (1) CN207021355U (fr)
TW (1) TWM568503U (fr)
WO (1) WO2018209776A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4131582A4 (fr) * 2020-09-03 2024-12-11 LG Energy Solution, Ltd. Module de batterie

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109860943A (zh) * 2018-12-26 2019-06-07 曙光节能技术（北京）股份有限公司 浸没式电池散热箱
KR102828349B1 (ko) * 2019-09-09 2025-07-03 삼성에스디아이 주식회사 배터리 팩
KR102828348B1 (ko) * 2019-09-09 2025-07-03 삼성에스디아이 주식회사 배터리 팩
CN111129653A (zh) * 2020-01-16 2020-05-08 西安交通大学 一种液冷辅助的相变材料换热的电池热管理系统
CN114204160B (zh) * 2021-11-24 2023-02-10 华能国际工程技术有限公司 液冷电池箱

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101882688A (zh) * 2009-05-06 2010-11-10 通用汽车环球科技运作公司 带有浸入式单元温度调控装置的电池组件
CN102157715A (zh) * 2011-03-16 2011-08-17 东莞新能源科技有限公司 电池组
CN102969545A (zh) * 2012-11-29 2013-03-13 吉林大学 一种锂离子动力电池液体冷却装置
CN104795606A (zh) * 2014-01-21 2015-07-22 微宏动力系统（湖州）有限公司 液冷电池组系统
CN105900260A (zh) * 2015-07-02 2016-08-24 深圳市大疆创新科技有限公司 电池及其壳体结构、电芯保护方法、可移动装置及其套件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101882688A (zh) * 2009-05-06 2010-11-10 通用汽车环球科技运作公司 带有浸入式单元温度调控装置的电池组件
CN102157715A (zh) * 2011-03-16 2011-08-17 东莞新能源科技有限公司 电池组
CN102969545A (zh) * 2012-11-29 2013-03-13 吉林大学 一种锂离子动力电池液体冷却装置
CN104795606A (zh) * 2014-01-21 2015-07-22 微宏动力系统（湖州）有限公司 液冷电池组系统
CN105900260A (zh) * 2015-07-02 2016-08-24 深圳市大疆创新科技有限公司 电池及其壳体结构、电芯保护方法、可移动装置及其套件

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4131582A4 (fr) * 2020-09-03 2024-12-11 LG Energy Solution, Ltd. Module de batterie

Also Published As

Publication number Publication date
TWM568503U (zh) 2018-10-11
CN207021355U (zh) 2018-02-16

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