WO2021139055A1 - 一种动力电池包液冷系统结构 - Google Patents

一种动力电池包液冷系统结构 Download PDF

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Publication number
WO2021139055A1
WO2021139055A1 PCT/CN2020/088257 CN2020088257W WO2021139055A1 WO 2021139055 A1 WO2021139055 A1 WO 2021139055A1 CN 2020088257 W CN2020088257 W CN 2020088257W WO 2021139055 A1 WO2021139055 A1 WO 2021139055A1
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Prior art keywords
liquid cooling
cooling plate
liquid
plate
battery pack
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Application number
PCT/CN2020/088257
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English (en)
French (fr)
Inventor
江民
程振醒
王中玉
刘滕
谢刚
Original Assignee
南京创源天地动力科技有限公司
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Priority to DE212020000074.3U priority Critical patent/DE212020000074U1/de
Publication of WO2021139055A1 publication Critical patent/WO2021139055A1/zh

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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
    • H01M10/61—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
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • 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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • H01M10/6554—Rods or plates
    • 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
    • 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 liquid cooling system structure of a power battery pack.
  • the battery heating of new energy vehicles is a major factor affecting battery life. Effectively dissipating the battery can extend the battery’s service life and reduce safety hazards.
  • the existing liquid cooling method heats up through the installation of a liquid cooling plate on the outside of the battery. The reasonable structure of the cooling plate will directly affect the heat dissipation performance.
  • the utility model provides a heat dissipation structure, which can improve the uniformity of heat exchange of the liquid cooling system, reduce the temperature difference between the cells and improve the use performance of the battery pack.
  • the utility model provides a liquid cooling system structure for a power battery pack in order to solve the above-mentioned problems in the prior art.
  • a power battery pack liquid cooling system structure including a first liquid cooling plate, a second liquid cooling plate, a third liquid cooling plate, a buffer pad and a water pipe.
  • the plate, the second liquid cooling plate and the third liquid cooling plate are arranged side by side in the same plane, and the first liquid cooling plate, the second liquid cooling plate and the third liquid cooling plate are all connected to the water pipe, and the buffer pad is arranged in the first
  • the cross sections of the first liquid cooling plate, the second liquid cooling plate and the third liquid cooling plate are all a harmonica tube structure.
  • the upper surfaces of the first liquid cooling plate, the second liquid cooling plate and the third liquid cooling plate are provided with thermally conductive silica gel pads.
  • liquid inlet and outlet aperture of the first liquid cooling plate is 5 cm
  • the second liquid cooling plate is 8.5 cm
  • the third liquid cooling plate is 10 cm.
  • the cushioning pad is foamed and molded with silicone rubber.
  • harmonica tube liquid cooling plate facilitates the parallel connection of the liquid cooling system, improves the uniformity of the heat exchange of the liquid cooling system, reduces the temperature difference between the cells and improves the performance of the battery pack.
  • the thermal conductive silica gel pad can better contact the battery core and the liquid cooling plate to play a role of heat transfer;
  • the cushion pad is made of silicone rubber foam molding can not only play a buffering role, but also play a role of support and heat preservation.
  • the pressure drop is reduced by controlling the inlet and outlet apertures of the liquid cooling plate to ensure the uniformity of the heat exchange of the liquid cooling system, thereby increasing the service life of the battery pack.
  • Figure 1 is an exploded view of the utility model.
  • Figure 2 is a plan view of the utility model.
  • Figure 3 is a cross-sectional view of the liquid cooling plate in the utility model.
  • a liquid cooling system structure of a power battery pack of the present invention includes a first liquid cooling plate 1, a second liquid cooling plate 2, a third liquid cooling plate 3, a buffer pad 4 and a water pipe 5.
  • a liquid cooling plate 1, a second liquid cooling plate 2 and a third liquid cooling plate 3 are arranged side by side in the same plane, and the first liquid cooling plate 1, the second liquid cooling plate 2 and the third liquid cooling plate 3 are all connected with the water pipe 5 is connected, the cushion 4 is arranged on the bottom surface of the first liquid cooling plate 1, the second liquid cooling plate 2 and the third liquid cooling plate 3.
  • the cross section of the cold plate 3 is a harmonica tube structure.
  • the use of the harmonica tube liquid cooling plate facilitates the parallel connection of the liquid cooling system, improves the uniformity of the heat exchange of the liquid cooling system, reduces the temperature difference between the cells and improves the performance of the battery pack.
  • the upper surfaces of the first liquid cooling plate 1, the second liquid cooling plate 2 and the third liquid cooling plate 3 are provided with a thermally conductive silica gel pad 6.
  • the thermal conductive silicone pad can better contact the battery core and the liquid cooling plate to play a role of heat transfer; the cushion pad is made of silicone rubber foam molding can play a buffering role, but also play a role of support and heat preservation.
  • the liquid inlet and outlet aperture on the first liquid cooling plate 1 is 5 cm
  • the liquid inlet and outlet aperture on the second liquid cooling plate 2 is 8.5 cm
  • the third liquid cooling plate 3 is 10 cm.
  • the pressure drop is reduced by controlling the inlet and outlet apertures of the liquid cooling plate to ensure the uniformity of the heat exchange of the liquid cooling system, thereby increasing the service life of the battery pack.

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

本实用新型公开了一种动力电池包液冷系统结构，包括第一液冷板、第二液冷板、第三液冷板、缓冲垫和水管，所述第一液冷板、第二液冷板和第三液冷板在同一平面内并列设置，且第一液冷板、第二液冷板和第三液冷板均与水管相连通，缓冲垫设置在第一液冷板、第二液冷板和第三液冷板的底面上，所述第一液冷板、第二液冷板和第三液冷板的横截面均为口琴管结构。本实用新型结构简单，使用效果好。

Description

一种动力电池包液冷系统结构 技术领域：
本实用新型涉及一种动力电池包液冷系统结构。
背景技术：
新能源汽车的电池发热是影响电池寿命一大主要因素，有效地对电池散热可以延长电池的使用寿命，减少安全隐患，现有液冷方式散热是通过在电池外侧设有液冷散热板，液冷散热板的结构的合理会直接影响散热性能，本实用新型提供一种散热结构，可以，提高液冷系统热交换的均匀性，缩小电芯间温差提高电池包的使用性能。
实用新型内容：
本实用新型是为了解决上述现有技术存在的问题而提供一种动力电池包液冷系统结构。
本实用新型所采用的技术方案有：一种动力电池包液冷系统结构，包括第一液冷板、第二液冷板、第三液冷板、缓冲垫和水管，所述第一液冷板、第二液冷板和第三液冷板在同一平面内并列设置，且第一液冷板、第二液冷板和第三液冷板均与水管相连通，缓冲垫设置在第一液冷板、第二液冷板和第三液冷板的底面上，所述第一液冷板、第二液冷板和第三液冷板的横截面均为口琴管结构。
进一步地，所述第一液冷板、第二液冷板和第三液冷板的上表面设有导热硅胶垫。
进一步地，所述第一液冷板上进出液孔径为5cm，第二液冷板上进出液孔径为8.5cm，第三液冷板上进出液孔径为10cm。
进一步地，所述缓冲垫采用硅橡胶发泡成型。
本实用新型具有如下有益效果：
采用口琴管液冷板便于液冷系统采用的并联的方式，提高液冷系统热交换的均匀性，缩小电芯间温差提高电池包的使用性能。
导热硅胶垫可以更好的与电芯和液冷板接触起到热传的作用；缓冲垫采用硅橡胶发 泡成型即能起到缓冲作用也能起到支撑和保温的作用。
通过控制液冷板上进出液孔径降低压降，以保证液冷系统的换热均匀性，从而提高电池包的使用寿命。
附图说明：
图1为本实用新型爆炸图。
图2为本实用新型平面图。
图3为本实用新型中液冷板的剖视图。
具体实施方式：
下面结合附图对本实用新型作进一步的说明。
如图1至图3，本实用新型一种动力电池包液冷系统结构，包括第一液冷板1、第二液冷板2、第三液冷板3、缓冲垫4和水管5，第一液冷板1、第二液冷板2和第三液冷板3在同一平面内并列设置，且第一液冷板1、第二液冷板2和第三液冷板3均与水管5相连通，缓冲垫4设置在第一液冷板1、第二液冷板2和第三液冷板3的底面上，第一液冷板1、第二液冷板2和第三液冷板3的横截面均为口琴管结构。采用口琴管液冷板便于液冷系统采用的并联的方式，提高液冷系统热交换的均匀性，缩小电芯间温差提高电池包的使用性能。
第一液冷板1、第二液冷板2和第三液冷板3的上表面设有导热硅胶垫6。导热硅胶垫可以更好的与电芯和液冷板接触起到热传的作用；缓冲垫采用硅橡胶发泡成型即能起到缓冲作用也能起到支撑和保温的作用。
第一液冷板1上进出液孔径为5cm，第二液冷板2上进出液孔径为8.5cm，第三液冷板3上进出液孔径为10cm。通过控制液冷板上进出液孔径降低压降，以保证液冷系统的换热均匀性，从而提高电池包的使用寿命。
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理的前提下还可以作出若干改进，这些改进也应视为本实用新型的保护范围。

Claims (4)

  1. 一种动力电池包液冷系统结构，其特征在于：包括第一液冷板(1)、第二液冷板(2)、第三液冷板(3)、缓冲垫(4)和水管(5)，所述第一液冷板(1)、第二液冷板(2)和第三液冷板(3)在同一平面内并列设置，且第一液冷板(1)、第二液冷板(2)和第三液冷板(3)均与水管(5)相连通，缓冲垫(4)设置在第一液冷板(1)、第二液冷板(2)和第三液冷板(3)的底面上，所述第一液冷板(1)、第二液冷板(2)和第三液冷板(3)的横截面均为口琴管结构。
  2. 如权利要求1所述的动力电池包液冷系统结构，其特征在于：所述第一液冷板(1)、第二液冷板(2)和第三液冷板(3)的上表面设有导热硅胶垫(6)。
  3. 如权利要求1所述的动力电池包液冷系统结构，其特征在于：所述第一液冷板(1)上进出液孔径为5cm，第二液冷板(2)上进出液孔径为8.5cm，第三液冷板(3)上进出液孔径为10cm。
  4. 如权利要求1所述的动力电池包液冷系统结构，其特征在于：所述缓冲垫(4)采用硅橡胶发泡成型。
PCT/CN2020/088257 2020-01-12 2020-04-30 一种动力电池包液冷系统结构 WO2021139055A1 (zh)

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DE212020000074.3U DE212020000074U1 (de) 2020-01-12 2020-04-30 Flüssigkeitsgekühlte Systemstruktur für einen Antriebsbatteriepack

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114497826A (zh) * 2022-04-18 2022-05-13 宁德时代新能源科技股份有限公司 水冷板组件、水冷系统、电池及其箱体以及用电装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207587929U (zh) * 2017-12-07 2018-07-06 合肥恒宇新能源有限公司 一种散热均匀的锂电池散热板
CN109950441A (zh) * 2019-03-15 2019-06-28 北京新能源汽车股份有限公司蓝谷动力系统分公司 电池包

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207587929U (zh) * 2017-12-07 2018-07-06 合肥恒宇新能源有限公司 一种散热均匀的锂电池散热板
CN109950441A (zh) * 2019-03-15 2019-06-28 北京新能源汽车股份有限公司蓝谷动力系统分公司 电池包

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114497826A (zh) * 2022-04-18 2022-05-13 宁德时代新能源科技股份有限公司 水冷板组件、水冷系统、电池及其箱体以及用电装置
CN114497826B (zh) * 2022-04-18 2022-08-26 宁德时代新能源科技股份有限公司 水冷板组件、水冷系统、电池及其箱体以及用电装置

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