WO2023151304A1 - 冷却组件及电池模组 - Google Patents

冷却组件及电池模组 Download PDF

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Publication number
WO2023151304A1
WO2023151304A1 PCT/CN2022/125850 CN2022125850W WO2023151304A1 WO 2023151304 A1 WO2023151304 A1 WO 2023151304A1 CN 2022125850 W CN2022125850 W CN 2022125850W WO 2023151304 A1 WO2023151304 A1 WO 2023151304A1
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WO
WIPO (PCT)
Prior art keywords
cooling assembly
battery
cooling
assembly according
accommodating
Prior art date
Application number
PCT/CN2022/125850
Other languages
English (en)
French (fr)
Inventor
田远伟
Original Assignee
湖北亿纬动力有限公司
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Application filed by 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2023151304A1 publication Critical patent/WO2023151304A1/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
    • H01M10/65—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
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
    • 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 application relates to the technical field of power batteries, for example, to a cooling assembly and a battery module.
  • the electric core in the related art mainly adopts the side liquid cooling method of the serpentine tube, and the serpentine tube is formed into a serpentine tube module by brazing two effusion tubes.
  • This form of heat dissipation has the following disadvantages. First, after the coolant is filled in the serpentine tube, when the coolant is used to cool the battery core, the serpentine tube will lose a part of energy, which reduces the cooling effect; and the serpentine tube module The longer length increases the flow resistance of the coolant.
  • the cooling effect of the cells near the liquid inlet of the serpentine tube module is stronger than that of the cells near the liquid outlet of the serpentine tube module, and the temperature uniformity is poor;
  • Second, the processing and welding precision of the serpentine tube is high, which increases the production cost;
  • the application provides a cooling assembly and a battery module, which can enhance heat exchange, reduce the temperature difference between battery cells, simplify the structure, optimize the assembly process, and improve the verticality of the battery cells.
  • the embodiment of the present application provides a cooling assembly for dissipating heat from the battery cells in the battery module.
  • the battery module includes a battery box, and the battery box is provided with an accommodation space. It is arranged to accommodate the battery cell and the cooling assembly, the battery case is provided with an inlet and an outlet communicating with the accommodation space, and the cooling assembly includes:
  • a filling piece is arranged on the outer periphery of the electric core to fix the electric core, and a flow channel for cooling liquid is provided between the filling piece and the electric core;
  • the accommodating space is configured such that the cooling liquid in the accommodating space immerses the electric core, the inlet is used for the cooling liquid to flow into the accommodating space, and the outlet is used for the cooling liquid to flow into the accommodating space.
  • the cooling liquid flows out of the accommodation space.
  • an embodiment of the present application provides a battery module, including a battery case, batteries disposed in the battery case, and the above-mentioned cooling assembly disposed in the battery case.
  • Fig. 1 is the structural representation of the filler provided by the present application.
  • Fig. 2 is the front view of the filler provided by the application
  • FIG. 3 is an enlarged view of I in Figure 2;
  • Fig. 4 is A-A sectional view of Fig. 2;
  • Figure 5 is an enlarged view of II in Figure 4.
  • Fig. 6 is the front view of the filler provided by the present application.
  • Fig. 7 is the B-B sectional view of Fig. 6;
  • Figure 8 is an enlarged view of III in Figure 7;
  • Fig. 9 is a C-C sectional view of Fig. 6;
  • Fig. 10 is an enlarged view of IV in Fig. 9 .
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • a first feature being "on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • This embodiment provides a battery module, including a battery case, a cell disposed in the battery case, and a cooling assembly disposed in the battery case, the cooling assembly is used to cool the cell.
  • the battery case is provided with an accommodating space, and the cooling assembly and the battery cells are both arranged in the accommodating space, and the case is provided with an inlet and an outlet communicating with the accommodating space.
  • the cooling assembly includes a filler 1, the cooling liquid can enter from the inlet and exit from the outlet, and the cooling liquid in the accommodating space is set to immerse the battery cell;
  • the filler 1 is arranged on the outer periphery of the electric core to fix the electric core, and a flow channel 12 through which the cooling liquid passes is arranged between the filler 1 and the electric core.
  • the battery module does not have cooling liquid when it leaves the factory, and the user only connects the inlet and outlet of the cooling assembly with external equipment (such as a water pump) when using it by himself, and only then passes the cooling liquid.
  • external equipment such as a water pump
  • the coolant can enter from the inlet and exit from the outlet.
  • a flow channel 12 for cooling liquid circulation is formed between the multiple cells and the filling body.
  • the cooling liquid passing through the flow channel 12 can take away the heat of the cell, and the cell Immersed in the cooling liquid, the cooling liquid is directly used for cell cooling; there is no need to fill the cooling plate with cooling liquid for cooling, avoiding the energy consumption of the cooling plate, enhancing the heat exchange capacity, and improving the cooling effect; avoiding the flow resistance of the cooling plate , improve the fluidity of the coolant, reduce the temperature difference between the cells, and then improve the cooling effect; make full use of the accommodation space provided by the structure of the battery box, cancel the internal pipelines such as serpentine tubes and related accessories, and improve The energy density is improved, the structure is simplified, and the installation process is optimized; the battery cell is fixed by the filler 1, which improves the installation stability of the battery cell, avoids uneven coating of the thermal conductive adhesive between the cell and the cooling plate, and improves the verticality of the cell. Spend.
  • the accommodating space is a sealed space, which avoids leakage of cooling liquid and improves safety.
  • the battery cell may be a cylindrical battery cell or a square battery cell or the like.
  • the first direction is the X direction
  • the second direction is the Y direction
  • the third direction is the Z direction
  • the first direction, the second direction and the third direction are perpendicular to each other.
  • the filler 1 is provided with a plurality of accommodating cavities 11, and the electric core is placed in the accommodating cavity 11, and the depth of the accommodating cavity 11 is not greater than the height of the electric core, so as to prevent affecting the Installation of related parts such as the bus bar on the top of the core.
  • the accommodating space is filled with fillers 1 in addition to the channels of the cooling liquid, so as to improve the installation stability of the battery cells.
  • the battery cell is a cylindrical battery cell, and the cavity wall of the accommodating cavity 11 is a circle suitable for the cylindrical battery cell.
  • the side wall of the cell acts as one side of the flow channel 12, and the coolant in the flow channel 12 directly contacts the cell for cooling, and there is no side wall of the cell directly in contact with the coolant; when part of the side wall of the cell can directly contact the coolant , when the other part of the side wall is not in direct contact with the cooling liquid, optionally, the filler 1 is a heat-conducting gel, which has a heat-conducting function, and can make the cooling liquid in the flow channel 12 pass through the heat-conducting gel to cool the cell, improving the cooling effect.
  • the cells When assembling, the cells can be installed in the containing space first, and then the heat-conducting gel can be filled and sealed between the battery box and each cell, which can reduce the requirements for molding accuracy during conventional filling;
  • the filling part 1 is molded, and then installed in the battery box to facilitate the making and molding of the filling part 1 .
  • each row of cell groups includes a plurality of cells arranged at intervals, and each row of cell groups forms a flow channel 12 with the filler 1, and each row of cell groups is cooled by cooling liquid, which improves the cooling effect.
  • each flow channel 12 communicates with the adjacent accommodating cavity 11, and multiple flow channels 12 are connected to the inlet and outlet, and multiple flow channels 12 are arranged in parallel to reduce the length of the flow channel 12 and improve the cooling effect , and reduce the temperature difference between different rows of battery core groups.
  • a flow channel 12 may be provided on the filler 1, and the flow channel 12 is S-shaped, and the flow channel 12 is used for cooling multiple rows of battery packs. Both ends of the flow channel 12 communicate with the inlet and the outlet respectively. However, when the flow channel 12 is longer, the cooling effect of the cells near the inlet will be stronger than that of the cells near the liquid outlet, resulting in poor temperature uniformity and poor cooling effect.
  • multiple flow channels 12 are connected to the inlet and outlet, reducing the number of inlets and outlets, simplifying the structure, avoiding the difference of cooling liquid flowing into different flow channels 12, improving consistency, and improving the temperature uniformity of different cells.
  • multiple inlets and outlets are respectively provided, and the two ends of each flow channel 12 are respectively connected to an inlet and an outlet.
  • the flow direction of the cooling liquid in two adjacent flow channels 12 is opposite, and a row of battery
  • the first battery cell is close to the liquid inlet of the first flow channel 12 and close to the liquid outlet of the second flow channel 12, while the last battery cell is close to the liquid outlet of the first flow channel 12 and close to the liquid outlet of the second flow channel 12.
  • the liquid inlets of the two flow channels 12 improve the temperature uniformity of the same row of cells.
  • two adjacent rows of cell groups are arranged staggered along the second direction, which increases the number of cells arranged and improves the energy density;
  • the flow channel 12 in between is in a wave shape, so that the flow channel 12 is adapted to the arrangement shape of the battery cells on both sides, and the contact area between the flow channel 12 and the battery cells is increased to improve the cooling effect.
  • a plurality of gaps 13 are spaced along the second direction, and the flow channel 12 communicates with the accommodating cavities 11 on both sides of the flow channel 12 through the plurality of gaps 13 .
  • the battery core is blocked on the gap 13 , so that the battery core and the filler 1 form a flow channel 12 , and the cooling liquid can contact the battery core, thereby improving the cooling effect.
  • the areas of the plurality of notches 13 are the same, and the notches 13 have the same shape, and the notches 13 on each accommodating cavity 11 have the same size and shape, so that the contact area between the cooling liquid and the electric core is the same, and the uniform temperature of the electric core is improved.
  • the projected shape of the notch 13 is a rectangle. In other embodiments, it may also be a circle, a rhombus, or an irregular shape.
  • the height of the notch 13 along the third direction is smaller than the depth of the accommodating cavity 11, and the notch 13 is located in the middle of the accommodating cavity 11 along the depth direction, that is, the notch 13 is located along the third direction.
  • the two sides of the direction are closed, which can effectively prevent the coolant from leaking.
  • the first end of the accommodating cavity 11 is open, and the second end of the accommodating cavity 11 is closed, that is, the accommodating cavity 11 is groove-shaped, and the filler 1 has a bottom.
  • the wall 111, forming the bottom of the groove prevents the coolant from leaking from the bottom.
  • the first end of the accommodating cavity 11 is open, and the second end of the accommodating cavity 11 is also open, that is, the accommodating cavity 11 is in the shape of a through hole.

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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

本申请公开一种冷却组件及电池模组。冷却组件用于对电池模组内的电芯进行散热，电池模组包括电池箱体，冷却组件和电芯容纳于电池箱体的容纳空间内，电池箱体上开设有与容纳空间连通的进口和出口，冷却组件包括冷却液和填充件，冷却液能够从所述进口进液，从所述出口出液，所述容纳空间内的所述冷却液被设置为浸没所述电芯；填充件设于所述电芯的外周以固定所述电芯，所述填充件和所述电芯之间设置有供所述冷却液通过的流道。

Description

冷却组件及电池模组
本公开要求在2022年2月14日提交中国专利局、申请号为202220288938.8的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及动力电池技术领域，例如涉及一种冷却组件及电池模组。
背景技术
相关技术中的电芯主要采用蛇形管侧面液冷方式，蛇形管通过两个积液管钎焊的形式形成一个蛇形管模块。这种形式的散热存在以下缺点，其一，冷却液填充于蛇形管后，冷却液用于冷却电芯时，蛇形管会损失掉一部分能量，降低了冷却效果；且蛇形管模块的长度较长，增加了冷却液流动阻力，靠近蛇形管模块进液口一端的电芯的冷却效果强于靠近蛇形管模块出液口一端的电芯的冷却效果，均温性较差；其二，蛇形管的加工及焊接精度要求高，提高了生产成本；其三，设置于电池模组内部的蛇形管管路较多，安装困难，蛇形管和电芯之间导热胶涂布不均，容易导致电芯垂直度不良等问题。
发明内容
本申请提供了一种冷却组件及电池模组，增强换热，降低电芯之间的温差，简化结构，优化组装过程，提高电芯垂直度。
一方面，本申请实施例提供了一种冷却组件，用于对电池模组内的电芯进行散热，所述电池模组包括电池箱体，电池箱体设有容纳空间，所述容纳空间被设置为容纳所述电芯和所述冷却组件，所述电池箱体上开设有与所述容纳空间连通的进口和出口，所述冷却组件包括：
填充件，设于所述电芯的外周以固定所述电芯，所述填充件和所述电芯之间设置有供冷却液通过的流道；
其中，所述容纳空间被设置为使所述容纳空间内的所述冷却液浸没所述电芯，所述进口用于供所述冷却液流进所述容纳空间，所述出口用于供所述冷却液流出所述容纳空间。
另一方面，本申请实施例提供了一种电池模组，包括电池箱体、设置于所述电池箱体内的电芯以及设置于所述电池箱体内的上述的冷却组件。
附图说明
图1是本申请提供的填充件的结构示意图；
图2是本申请提供的填充件的前视图；
图3是图2的Ⅰ处放大图；
图4是图2的A-A剖视图；
图5是图4的Ⅱ处放大图；
图6是本申请提供的填充件的主视图；
图7是图6的B-B剖视图；
图8是图7的Ⅲ处放大图；
图9是图6的C-C剖视图；
图10是图9的Ⅳ处放大图。
图中：
1、填充件；11、容置腔；111、底壁；12、流道；13、缺口。
具体实施方式
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本申请中的含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
本实施例提供了一种电池模组，包括电池箱体、设置于电池箱体内的电芯以及设置于电池箱体内的冷却组件，冷却组件用于冷却电芯。可选地，电池箱体设有容纳空间，冷却组件和电芯均设于容纳空间内，箱体开设有与容纳空间连通的进口和出口。
本实施例还提供了一种冷却组件，如图1所示，冷却组件包括填充件1，冷却液能够从进口进液，从出口出液，容纳空间内的冷却液被设置为浸没电芯；填充件1设于电芯的外周以固定电芯，填充件1和电芯之间设置有供冷却液通过的流道12。
在一实施例中，电池模组出厂时不带冷却液，用户自己使用时才会让冷却 组件的进口、出口跟外部设备(如水泵)连通，这时才通冷却液。
冷却液能够从进口进液，从出口出液，多个电芯和填充体之间形成了冷却液流通的流道12，经过流道12内的冷却液能够带走电芯的热量，电芯浸没在冷却液中，冷却液直接用于电芯冷却；无需将冷却液填充于冷却板再进行冷却，避免冷却板消耗能量，增强了换热能力，提高了冷却效果；避免冷却板施加流动阻力，提高了冷却液的流动性，降低电芯之间的温差，进而提高了冷却效果；充分利用了电池箱体的结构提供的容纳空间，取消了蛇形管等内部管路及相关配件，提高了能量密度，简化结构，优化了安装过程；通过填充件1固定电芯，提高了电芯的安装稳定性，避免了电芯跟冷却板之间导热胶涂布不均，提高了电芯垂直度。通过设置流道12对冷却液进行约束，提高了冷却液流动均匀性，提高冷却效果。
可选地，容纳空间为密封空间，避免冷却液泄漏，提高了安全性。
示例性地，电芯可以是圆柱电芯也可以是方形电芯等。
本实施例中，第一方向为X向，第二方向为Y向，第三方向为Z向，第一方向、第二方向和第三方向两两相互垂直。
如图1所示，可选地，填充件1设有多个容置腔11，电芯容置于容置腔11内，容置腔11的深度不大于电芯的高度，以防止影响电芯顶部的汇流排等相关零件的安装。在一实施例中，容纳空间内除了冷却液的通道之外，通过填充填充件1，以提高电芯的安装稳定性。本实施例中，电芯为圆柱电芯，容置腔11的腔壁为与圆柱电芯相适应的圆形。
电芯侧壁充当流道12的一面，流道12内的冷却液直接接触电芯进行冷却，没有直接与冷却液接触的电芯侧壁；当电芯的部分侧壁能够与冷却液直接接触，另一部分侧壁与冷却液不直接接触时，可选地，填充件1为导热胶体，导热胶体具有导热功能，能够使流道12内的冷却液经过导热胶体对电芯进行冷却，提高了冷却效果。组装时，可以先将电芯安装于容纳空间内，再将导热胶体填充灌封于电池箱体以及各个电芯之间，能够降低常规填胶时对成型精度的要求；也可以在外面先对填充件1成型，之后再安装在电池箱体内，方便填充件1制作成型。
本实施例中，如图1-图3所示，电池箱体内沿第一方向设置有多排电芯组，相邻两排电芯组交错设置，能够提高电池箱体内容置电芯的数量。可选地，每排电芯组包括多个间隔设置的电芯，每排电芯组与填充件1形成一个流道12，每排电芯组均通过冷却液冷却，提高了冷却效果。
本实施例中，每一流道12与相邻的容置腔11连通，多个流道12均连通于进口和出口，多个流道12并联设置，减小流道12长度，提高了冷却效果，且降低了不同排电芯组间的温差。
其他实施例中，填充件1上可以设置有一条流道12，一条流道12呈S型，流 道12用于对多排电芯组进行冷却。流道12的两端分别与进口和出口连通。然而，当流道12较长时，靠近进口的电芯的冷却效果会强于靠近出液口的电芯的冷却效果，均温性差，冷却效果会较差。
本实施例中，多个流道12均连通于进口和出口，减少进口和出口数量，简化结构，避免不同流道12流入冷却液的差异，提高一致性，提高不同电芯的均温性。
其他实施例中，进口和出口分别设置有多个，每个流道12的两端分别连接于一个进口和一个出口，相邻两个流道12内的冷却液的流向相反，一排电芯中的第一个电芯靠近第一个流道12的进液口，靠近第二个流道12的出液口，而最后一个电芯靠近第一个流道12的出液口，靠近第二个流道12的进液口，从而提高同一排电芯的均温性。
可选地，如图4和图5所示，相邻两排电芯组沿第二方向交错设置，增加了布置电芯的数量，提高了能量密度；可选地，位于两排电芯排之间的流道12呈波浪状，使流道12与两侧的电芯的排布形状相适应，增加流道12与电芯的接触面积进而提高冷却效果。
可选地，如图6-图10所示，沿第二方向上间隔开设有多个缺口13，流道12通过多个缺口13分别与流道12两侧的容置腔11连通，电芯安装在容置腔11后，电芯封堵在缺口13上，使电芯与填充件1形成流道12，冷却液能够与电芯相接触，进而提高了冷却效果。示例性地，多个缺口13的面积相同，且缺口13形状相同，每个容置腔11上的缺口13大小及形状均相同，使冷却液与电芯的接触面积相同，提高电芯均温性，本实施例中，如图7-图10所示，缺口13的投影形状为矩形，其他实施例中也可以是圆形、菱形或者不规则形状等。
可选地，如图7-图10所示，缺口13沿第三方向的高度小于容置腔11的深度，且缺口13位于容置腔11沿深度方向的中间部位，即缺口13沿第三方向的两侧时封闭的，能够有效防止冷却液泄漏。本实施例中，如图10所示，容置腔11的第一端呈开口设置，容置腔11的第二端呈封闭设置，即容置腔11呈凹槽状，填充件1具有底壁111，形成凹槽的槽底，能够防止冷却液从底部泄漏。其他实施例中，容置腔11的第一端呈开口设置，容置腔11的第二端也呈开口设置，即容置腔11呈通孔状。

Claims (12)

  1. 一种冷却组件，用于对电池模组内的电芯进行散热，所述电池模组包括电池箱体，所述电池箱体设有容纳空间，所述容纳空间被设置为容纳所述电芯和所述冷却组件，所述电池箱体上开设有与所述容纳空间连通的进口和出口，所述冷却组件包括：
    填充件(1)，设于所述电芯的外周以固定所述电芯，所述填充件(1)和所述电芯之间设置有供冷却液通过的流道(12)；
    其中，所述容纳空间被设置为使所述容纳空间内的所述冷却液浸没所述电芯，所述进口用于供所述冷却液流进所述容纳空间，所述出口用于供所述冷却液流出所述容纳空间。
  2. 根据权利要求1所述的冷却组件，其中，所述填充件(1)设有多个容置腔(11)，所述电芯容置于所述容置腔(11)内，所述容置腔(11)的深度不大于所述电芯的高度。
  3. 根据权利要求2所述的冷却组件，其中，所述电池箱体内沿第一方向设置有多排电芯组，相邻两排所述电芯组交错设置。
  4. 根据权利要求3所述的冷却组件，其中，每排所述电芯组包括多个间隔设置的所述电芯，每排所述电芯组与所述填充件(1)形成一个所述流道(12)。
  5. 根据权利要求2所述的冷却组件，其中，每一所述流道(12)与相邻的所述容置腔(11)连通，多个所述流道(12)均连通于所述进口和所述出口。
  6. 根据权利要求2所述的冷却组件，其中，所述电池箱体内沿第一方向设置有多排电芯组，位于相邻两排所述电芯组之间的所述流道(12)呈波浪状，每排所述电芯组沿第二方向设置有多个所述电芯，且所述流道(12)沿所述第 二方向上间隔开设有多个缺口(13)，所述第一方向和所述第二方向呈夹角设置，所述流道(12)通过多个所述缺口(13)分别与所述流道(12)两侧的所述容置腔(11)连通。
  7. 根据权利要求6所述的冷却组件，其中，所述缺口(13)沿第三方向的高度小于所述容置腔(11)的深度，且所述缺口(13)位于所述容置腔(11)沿深度方向的中间部位。
  8. 根据权利要求6所述的冷却组件，其中，多个所述缺口(13)的面积相同，且所述缺口(13)形状相同。
  9. 根据权利要求2-8任一项所述的冷却组件，其中，所述容置腔(11)的第一端呈开口设置，所述容置腔(11)的第二端呈开口或呈封闭设置。
  10. 根据权利要求1-8任一项所述的冷却组件，其中，所述进口和所述出口分别设置有多个，每个所述流道(12)的两端分别连接于一个所述进口和一个所述出口，相邻两个所述流道(12)内的冷却液的流向相反。
  11. 根据权利要求1-8任一项所述的冷却组件，其中，所述填充件(1)为导热胶体。
  12. 一种电池模组，包括电池箱体、设置于所述电池箱体内的电芯以及设置于所述电池箱体内的如权利要求1-11任一项所述的冷却组件。
PCT/CN2022/125850 2022-02-14 2022-10-18 冷却组件及电池模组 WO2023151304A1 (zh)

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