WO2018184309A1 - 电池模组和动力电池 - Google Patents

电池模组和动力电池 Download PDF

Info

Publication number
WO2018184309A1
WO2018184309A1 PCT/CN2017/091572 CN2017091572W WO2018184309A1 WO 2018184309 A1 WO2018184309 A1 WO 2018184309A1 CN 2017091572 W CN2017091572 W CN 2017091572W WO 2018184309 A1 WO2018184309 A1 WO 2018184309A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
battery module
adjacent
intermediate member
module according
Prior art date
Application number
PCT/CN2017/091572
Other languages
English (en)
French (fr)
Inventor
葛增芳
方杰
龚骁
刘宇
王林峰
Original Assignee
上海蔚来汽车有限公司
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 上海蔚来汽车有限公司 filed Critical 上海蔚来汽车有限公司
Publication of WO2018184309A1 publication Critical patent/WO2018184309A1/zh

Links

Images

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
    • H01M10/61—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
    • H01M10/655—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
    • H01M10/656—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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 the field of power battery technology, and more particularly to a battery module in which a cooling fluid directly contacts a battery unit and a power battery having the same.
  • power batteries are required to have higher specific energy, so-called high specific energy is smaller volume and weight and the power system can provide higher energy.
  • the power battery is required to have a high safety factor and a long service life.
  • high-energy-density power batteries a certain amount of heat is generated during operation. If the heat cannot be dissipated in time, it will cause greater damage to the life and safety performance of the power battery.
  • the air-cooling cooling system In the current design of power battery cooling scheme, the air-cooling cooling system is bulky, and the cooling efficiency is low. It is difficult to meet the requirements of temperature rise and temperature difference of the battery under large charge and discharge conditions; the liquid cooling method has high efficiency, but currently adopted In the cooling plate/cooling tube mode, the cooling fluid body is in indirect contact with the battery, and there is a large thermal resistance between the battery and the refrigerant, so that the cooling efficiency is not optimal, and there is a risk that the cooling plate/cooling tube is broken and the cooling fluid flows out. Reduce the safety factor of the power battery.
  • the object of the present invention is to make the cooling fluid in the battery module directly contact the battery unit, improve the cooling efficiency, and at the same time minimize the battery temperature difference in the entire battery system.
  • the object of the invention is that the battery module adopts a modular design to improve its scalability.
  • the object of the present invention is to prevent the cooling fluid from directly contacting other key components of the power battery to avoid causing corrosion and the like, and to improve the safety of the power battery.
  • a battery module comprising:
  • a plurality of battery cells arranged in a longitudinal direction, the plurality of battery cells having a housing;
  • An intermediate member disposed between adjacent battery cells
  • the adjacent intermediate members together with the housing of the battery unit therebetween define a cooling fluid flow path such that cooling fluid passes between the intermediate member and the housing of the battery unit and directly with the Battery unit contact.
  • the intermediate member includes opposite first sides and second sides, and one of the first side and the second side of the intermediate member has a function of preventing fluid from passing in the longitudinal direction.
  • the flow member, the other of the first side and the second side of the intermediate member, has a longitudinal flow path that allows fluid to pass longitudinally.
  • the adjacent intermediate members are arranged such that the stop members of the adjacent intermediate members are on opposite sides of the battery module .
  • the plurality of battery cells have a substantially cubic shape, and the adjacent intermediate members surround five surfaces of the battery cells other than the electrode side.
  • the intermediate member has a third side opposite to an electrode side of the battery unit, and the intermediate member has a lateral flow path in a lateral direction on the third side.
  • a middle portion of the intermediate member has a flow guiding member to define a middle flow path between adjacent battery units.
  • adjacent intermediate members are provided with a limiting portion at the joint such that adjacent intermediate members are aligned.
  • the battery module further includes an end member at both ends, the end member having a fluid inlet or a fluid outlet.
  • the battery module further includes a mounting member outside the end member, wherein the mounting member, the end member and each intermediate member have a plurality of mounting holes corresponding to positions, A plurality of bolts pass through the corresponding plurality of holes to assemble the mounting member, the end member, and the respective intermediate members together.
  • a joint is provided at a joint of the adjacent intermediate members and a joint of the adjacent intermediate member and the battery unit.
  • the cooling fluid is a flame retardant insulating fluid.
  • the present invention also provides a power battery including a battery module in accordance with various embodiments of the present invention.
  • the battery module and the power battery according to various embodiments of the present invention have the advantages of high cooling efficiency, high energy density, light weight, safety and stability, and high expandability.
  • FIG. 1 shows a perspective view of a battery module assembled in accordance with an embodiment of the present invention
  • FIG. 2 is a perspective view showing an exploded state of a battery module in accordance with an embodiment of the present invention
  • 3 and 4 respectively show perspective views of different angles of intermediate members in accordance with an embodiment of the present invention
  • Figure 5 shows a perspective view of an end member in accordance with an embodiment of the present invention
  • Figure 6 shows a perspective view of a mounting component in accordance with an embodiment of the present invention
  • FIG. 7 shows a schematic diagram of a fluid flow path of a battery module in accordance with an 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 x direction in FIG. 1 is referred to as a vertical direction
  • the y The direction is referred to as the lateral direction
  • the z direction is referred to as the vertical direction
  • the other directions are referred to as "lateral”, “vertical” and “longitudinal” in the corresponding directions in FIG.
  • the battery module 10 includes a plurality of battery cells 1 arranged in the longitudinal direction, and between each pair of adjacent battery cells 1, an intermediate member 2 is disposed between the battery cells 1 and 1' in Fig. 2 .
  • a plurality of battery cells 1 include 12 battery cells 1 and 11 intermediate members 2.
  • n+1 battery cells 1 and n intermediate members 2 may be included.
  • the end member 3 is disposed at both ends of the plurality of battery cells 1, and the mounting member 4 is disposed outside the end member 3.
  • the plurality of battery cells 1 have a housing or housing that is cubic. It has six faces including a first side and a second side that are opposite in the lateral direction, a top side and a bottom side that are opposite in the vertical direction, and a front side and a rear side that are opposed in the longitudinal direction.
  • the top side of the casing of the battery unit 1 is the electrode side, having the positive and negative terminals 11 and 12, and hereinafter, the opposite side to the electrode side is referred to as the third side.
  • the housing of the battery unit has a cubic shape, in alternative embodiments, the plurality of battery units may have other shapes.
  • the intermediate member 2 is joined to the housing of the battery unit 1 near the top side or the electrode side of the battery unit.
  • a seal such as a gasket is provided at the joint between the intermediate member 2 and the battery unit 1 to make it fluid-tight.
  • the adjacent intermediate members 2 are joined to each other so as to surround the portion of the casing of the battery unit 1.
  • a seal such as a gasket, is also provided at the joint between the adjacent intermediate members 2 to make it fluid-tight.
  • the housing of the battery unit 1 and the intermediate member 2 collectively define a cooling fluid flow path so that the cooling fluid can directly contact the housing of the battery unit 1 while allowing the electrodes of the battery unit to be exposed.
  • the cooling fluid is confined in the cooling fluid flow path due to the sealing engagement between the intermediate member and the battery unit and the sealing engagement between the adjacent intermediate members, and does not leak.
  • the cooling liquid is in direct contact with all five sides of the battery unit except the electrode side, including the front side, the back side, the first side, the second side, and the bottom side, by directing the cooling fluid to the battery unit Multiple side contacts can more effectively cool the battery unit. In some embodiments, as shown in FIG.
  • each of the intermediate member 2, the end member 3, and the mounting member 4 are provided with a plurality of mounting holes at a plurality of corresponding positions, and the plurality of bolts 51 pass through the plurality of corresponding members.
  • the holes are mounted and received by nuts 52 on opposite sides, thereby holding the components and the battery cells between the intermediate members together.
  • the components of the battery module can also be held in another manner Start.
  • the intermediate member 2 has a generally rectangular frame shape with a first side 22, a second side 23, a top side or electrode side 21, and a bottom side or third side 24. Since the intermediate portion of the top side 21 of the intermediate member 2 is for engaging the electrode sides of the battery cells on both sides, it has a reduced width.
  • the front side and the rear side of each intermediate member 2 respectively define a cavity of the battery unit together with an adjacent intermediate member, or in other words, the front side and the rear side of the intermediate member 2 respectively define one half of the battery cell cavity. Since the structures of the front side and the rear side of the intermediate member 2 are substantially symmetrical in the present embodiment, the front side of the intermediate member 2 which is easily observed will be mainly described below.
  • the third or bottom side 24 of the intermediate member 2 opposite the electrode side has a plurality of flow guides.
  • the flow guiding member is formed as a plurality of ribs, including a middle rib 242 and an outer rib 241, which together define a lateral flow path in the lateral direction.
  • the cooling fluid can pass from the bottom side of the battery unit in the direction indicated by the arrow A along the lateral flow path, and is in direct contact with the bottom side of the battery unit and exchanges heat.
  • the bottom side baffle may define a lateral flow path other than that illustrated, for example, the flow path defined by the baffle may be steerable in any direction, such as may be on the underside of the intermediate member A labyrinth flow path is formed to enhance contact of the cooling fluid with the bottom side of the battery unit.
  • the middle portion of the intermediate member has a flow guide, such as a plurality of ribs 26.
  • a plurality of lateral flow paths are defined between the plurality of ribs 26 in the lateral direction.
  • the cooling fluid can pass between the adjacent two battery cells in the direction indicated by the arrow B in the lateral flow path, and is in direct contact with the front side and the rear side of the adjacent two battery cells and performs heat exchange.
  • the intermediate flow guide of the intermediate member is formed as a flow guide rib extending parallel to the horizontal direction of the top side 21 and the bottom side 24 to define a lateral flow path
  • the flow guiding member in the middle of the intermediate member may have other forms, for example, may include a lateral, vertical, longitudinal, oblique or labyrinth flow path so that the cooling fluid can be adjacent to the front side of the adjacent corresponding battery unit. More full contact with the back side.
  • one or both of the first side 22 and the second side 23 of the intermediate member 2 can be provided with a flow guide, for example, a plurality of ribs 221, 231.
  • a plurality of longitudinal flow paths in the longitudinal direction are defined between the plurality of ribs of the first side 22 and the second side 23 of the intermediate member 2.
  • the cooling fluid may pass from one side or both sides of the battery unit in a direction indicated by an arrow C in the longitudinal flow path and directly contact and exchange heat with the first side and/or the second side of the battery unit.
  • the flow guides of the first side 22 and the second side 23 of the intermediate member may define a non-longitudinal flow path, for example, the flow path defined by the flow guide may be steerable in any direction, for example A labyrinth flow path is formed on the first side and/or the second side of the intermediate member to enhance contact of the cooling fluid with the first side and/or the second side of the battery unit.
  • one of the first side 22 and the second side 23 of the intermediate member is provided with a flow stop, as shown in FIG. 4, the stop member in the form of a stop rib 222 is disposed at The inside of one side 22. The presence of the stop ribs 222 causes the cooling fluid to pass completely or largely out of the first side 22, whereby the cooling fluid is forced to circumscribe in the direction of arrow B and arrow C.
  • adjacent intermediate members are arranged such that the stop members of adjacent intermediate members are on opposite sides of the battery module, in other words, adjacent intermediate members
  • the retaining ribs 222 are spaced apart on the first side and the second side, thereby causing the cooling fluid in the battery module to pass through the cooling liquid flow path substantially in the "S" type line indicated by the arrow in FIG.
  • the structures of the flow guiding members and/or the flow restricting members on each side and the middle portion of each intermediate member in the battery module may be arbitrarily selected such that the cooling fluid in the battery module is along other lines, For example, a "U" type or a "Z" type line passes.
  • the intermediate member 2 has a plurality of mounting holes 251, 252 disposed along its periphery, wherein the mounting holes 252 are formed as protrusions to engage with corresponding slots when engaged with the adjacent intermediate member 2 to limit The position acts so that the respective intermediate members 2 can be aligned.
  • adjacent intermediate members 2 may have other forms of stops at the joint to limit the positional relationship therebetween.
  • the end member 3 includes a top side 31, a bottom side 34, a first side 32 and a second side 33.
  • the end member 3 can have a structure similar to that of the intermediate member 2 and has an end wall 35.
  • the end wall 35 is spaced from the front or rear side of the battery unit to form an inflow or outflow region.
  • a similar flow guide is also provided on the bottom side 34, the first side 32 and the second side 33 of the end member 3.
  • the end member 3 together with the adjacent intermediate member 2 and the battery cells therebetween also define a fluid flow path.
  • a mounting hole 35 and a stopper corresponding to the position of the intermediate member 2 may be provided around the end member 3.
  • the mounting member 4 may be integrally formed with the end member 3, or may be formed separately from the end member 3 as shown in the present embodiment.
  • the mounting member 4 has a body 42 that is flat, a mounting hole 45 around the body 42 and an opening 46 through which the fluid conduit can pass.
  • the mounting member further includes a mounting screw hole 41 through which the entire battery module can be fixed by means of mounting screw holes 41 of the side mounting members 4.
  • the intermediate member 2 and the end member 3 may be made of a plastic material and the mounting member 4 may be made of metal.
  • Cooling fluid enters the inflow zone 8 of the cooling flow path from the cooling fluid inlet 71. Thereafter, part of the cooling fluid flows around the battery cells in the directions indicated by arrows B and C, and another portion of the cooling fluid flows intermittently through the third side of each of the battery cells in the direction indicated by arrow A. The final cooling fluid converges to the outflow zone 9 and exits through the cooling fluid outlet 72.
  • a flame-retardant insulating fluid can be used in the cooling fluid flow path, so that even if the cooling fluid flow path leaks, the safety of the battery is not affected, and the cooling liquid simultaneously acts as a flame retardant, when the battery is strongly squeezed or punctured.

Abstract

本发明提供了一种电池模组和动力电池，其中，电池模组包括：沿纵向排列的多个电池单元，所述多个电池单元具有壳体；以及设置在相邻的电池单元之间的中间构件；其特征在于，相邻的所述中间构件流体密封地接合并包围它们之间的电池单元的壳体的至少一部分；其中，相邻的所述中间构件与它们之间的电池单元的壳体一起限定冷却流体流路，使得冷却流体从所述中间构件和所述电池单元的壳体之间通过并直接与所述电池单元接触。根据本发明的各个实施例的电池模组和动力电池具有冷却效率高，轻量化，安全稳定，可扩展性强等优点。

Description

电池模组和动力电池 技术领域
本发明涉及动力电池技术领域，更具体地，本发明涉及一种冷却流体直接接触电池单元的电池模组以及具有其的动力电池。
背景技术
目前动力电池的应用中，尤其在新能源电动汽车领域，要求动力电池具有较高的比能量，所谓高比能量是较小体积和重量且动力系统能提供较高的能量。与此同时，还要求动力电池具有较高的安全系数和较长的使用寿命。对于高能量密度动力电池而言，在运行中，会产生一定的热量，若热量不能被及时散除，会对动力电池寿命和安全性能产生较大危害。急需设计具有保证电池维持在适宜温度且轻质量的电池动力冷却系统，来满足整套动力系统高能量密度和整车轻量化要求。
在目前动力电池冷却方案设计中，气冷方式冷却系统体积大，同时冷却效率低，较难满足电池在大倍率充放电情况下的温升和温差的要求；液冷方式效率高，但目前采用冷却板/冷却管方式，冷却流体体与电池间接接触，电池与冷媒之间存在较大的热阻致使冷却效率不能达到最佳，同时会有冷却板/冷却管破裂引发冷却流体流出的风险，使动力电池安全系数降低。
现有技术中还存在电池液冷直接冷却技术方案，其中，电池模组直接放进绝缘阻燃液体中，虽能对电池进行直接冷却，但电池系统其它部件也一同浸入液体中，带来液体对其它关键部件腐蚀等安全风险，同时这种方案冷却流体体较多，在一定程度上降低动力电池比能量，增加成本。
发明内容
本发明的目的在于使电池模组中的冷却流体直接与电池单元接触，改善冷却效率，同时可使整个电池系统中电池温差最小化。
本发明的目的在于提高电池模组的能量比。
本发明的目的在于电池模组采用模块化设计，提高其可扩展性。
本发明的目的在于避免冷却流体直接接触动力电池的其它关键部件，以避免对其造成腐蚀等危害，同时改善动力电池的安全性。
本发明的目的还在于解决或至少缓解现有技术中存在的其他问题。
为实现本发明的目的，根据本发明的一方面，提供了一种电池模组，其包括：
沿纵向排列的多个电池单元，所述多个电池单元具有壳体；以及
设置在相邻的电池单元之间的中间构件；
其特征在于，相邻的所述中间构件流体密封地接合并包围它们之间的电池单元的壳体的至少一部分；
其中，相邻的所述中间构件与它们之间的电池单元的壳体一起限定冷却流体流路，使得冷却流体从所述中间构件和所述电池单元的壳体之间通过并直接与所述电池单元接触。
可选地，在上述电池模组中，所述中间构件包括相对的第一侧和第二侧，所述中间构件的第一侧和第二侧中的一者具有阻止流体沿纵向通过的止流件，所述中间构件的第一侧和第二侧中的另一者具有允许流体沿纵向通过的纵向流路。
可选地，在上述电池模组中，在所述电池模组中，相邻的所述中间构件布置成使得相邻的所述中间构件的止流件处于所述电池模组的相对侧上。
可选地，在上述电池模组中，所述多个电池单元外形基本呈立方体，所述相邻的中间构件包围所述电池单元的除电极侧外的五个表面。
可选地，在上述电池模组中，所述中间构件具有与所述电池单元的电极侧相对的第三侧，所述中间构件在所述第三侧上具有沿横向方向的横向流路。
可选地，在上述电池模组中，所述中间构件中部具有导流件以限定相邻的电池单元之间的中部流路。
可选地，在上述电池模组中，相邻的所述中间构件在接合处设置有限位部使得相邻的所述中间构件对齐。
可选地，在上述电池模组中，所述电池模组还包括两端处的端部构件，所述端部构件具有流体入口或流体出口。
可选地，在上述电池模组中，所述电池模组还包括端部构件外侧的安装部件，其中，所述安装部件、端部构件和各个中间构件具有位置对应的多个安装孔， 多个螺栓穿过对应的多个孔来将安装部件、端部构件和各个中间构件组装到一起。
可选地，在上述电池模组中，相邻的所述中间构件的接合处以及相邻的所述中间构件与电池单元的接合处设置了密封件。
可选地，在上述电池模组中，所述冷却流体为阻燃绝缘流体。
本发明还提供了一种动力电池，所述动力电池包括根据本发明的各个实施例的电池模组。
根据本发明的各个实施例的电池模组和动力电池具有冷却效率高，能量密度高，轻量化，安全稳定，可扩展性强等优点。
附图说明
参照附图，本发明的公开内容将变得更易理解。本领域技术人员容易理解的是：这些附图仅仅用于说明的目的，而并非意在对本发明的保护范围组成限制。此外，图中类似的数字用以表示类似的部件，其中：
图1示出了根据本发明的实施例的电池模组组装时的透视图；
图2示出了根据本发明的实施例的电池模组分解时的透视图；
图3和图4分别示出了根据本发明的实施例的中间构件的不同角度的透视图；
图5示出了根据本发明的实施例的端部构件的透视图；
图6示出了根据本发明的实施例的安装部件的透视图；以及
图7示出了根据本发明的实施例的电池模组的流体流路示意图。
具体实施方式：
容易理解，根据本发明的技术方案，在不变更本发明实质精神下，本领域的一般技术人员可以提出可相互替换的多种结构方式以及实现方式。因此，以下具体实施方式以及附图仅是对本发明的技术方案的示例性说明，而不应当视为本发明的全部或者视为对本发明技术方案的限定或限制。
在本说明书中提到或者可能提到的上、下、左、右、前、后、正面、背面、顶部、底部等方位用语是相对于各附图中所示的构造进行定义的，它们是相对的概念，因此有可能会根据其所处不同位置、不同使用状态而进行相应地变化。所以，也不应当将这些或者其他的方位用语解释为限制性用语。
应当理解，本发明的说明书和附图中，以图1中的x方向称为纵向，y方 向称为横向，z方向称为竖向，在其他视图中采用“横向”，“竖向”和“纵向”的表述图1中相对应的方向。
首先参考图1和图2，其示出了根据本发明的实施例的电池模组在组装和待组装状态的示意图。电池模组10包括多个沿纵向排列的电池单元1，每一对相邻的电池单元1之间，如图2中的电池单元1和1’之间布置有中间构件2。在图1所示的实施例中，多个电池单元1包括了12个电池单元1和11个中间构件2。在备选实施例中，可包括n+1个电池单元1和n个中间构件2。此外，在多个电池单元1的两端布置了端部构件3，在端部构件3外侧布置有安装部件4。
在图示的实施例中，多个电池单元1具有呈立方体的外壳或壳体。其具有六个面，包括在横向上相对的第一侧和第二侧、在竖向上相对的顶侧和底侧以及在纵向上相对的前侧和后侧。在所示实施例中，电池单元1的壳体的顶侧为电极侧，具有正负极端子11和12，在下文中，也将于电极侧相对的底侧称为第三侧。应当理解，尽管图示出的所有实施例中，电池单元的壳体呈立方体形状，在备选实施例中，多个电池单元也可为其他形状。在电池单元的顶侧或电极侧附近，中间构件2和电池单元1的壳体接合。在该中间构件2与电池单元1之间的接合处设置有密封件，如密封垫以使得不透流体。在除顶侧或电极侧外的其他侧，包括第一侧，第二侧以及底侧处，相邻的中间构件2彼此接合，从而包围电池单元1的壳体的部分。在该相邻的中间构件2之间的接合处也设置有密封件，如密封垫以使得不透流体。在电池模组组装后电池单元1的壳体和中间构件2共同限定了冷却流体流路，以使得冷却流体能够直接地与电池单元1的壳体接触，同时，使电池单元的电极能露出。尽管电池单元1的电极11,12露出，但由于中间构件与电池单元之间密封接合以及相邻中间构件之间的密封接合使得冷却流体被限制在冷却流体流路中，不会泄露。在一些实施例中，冷却液体直接与电池单元的除电极侧以外的所有五个侧面接触，包括前侧，后侧，第一侧，第二侧以及底侧，通过使冷却流体直接与电池单元的多个侧接触可更有效率地对电池单元进行降温。在一些实施例中，如图2所示，各个中间构件2，端部构件3以及安装部件4在多个对应位置上设置了多个安装孔，多个螺栓51穿过对应部件上的多个安装孔并由相对侧上的螺母52接收，由此将这些部件以及中间构件之间的电池单元保持在一起。在备选实施例中，还可通过其他方式来将电池模组的部件保持在一 起。
继续参考图3和图4来详细介绍中间构件2的一个具体实施例。中间构件2具有大致呈矩形框形状，其具有第一侧22、第二侧23、顶侧或电极侧21以及底侧或第三侧24。由于中间构件2的顶侧21的中间段用于与两侧的电池单元的电极侧接合，故具有缩小的宽度。各个中间构件2的前侧和后侧分别与相邻的中间构件一起限定电池单元的容腔，或换而言之，中间构件2的前侧和后侧分别限定电池单元容腔的一半。由于在本实施例中，中间构件2的前侧和后侧的结构基本对称，故以下主要描述容易观察到的中间构件2的前侧。
在一些实施例中，中间构件2的与电极侧相对的第三侧或底侧24处具有多个导流件。在本实施例中，导流件形成为多个筋，包括中部筋242和外侧筋241，它们共同限定了沿横向的横向流路。冷却流体可沿横向流路如沿箭头A所示的方向从电池单元的底侧通过，并与电池单元的底侧直接接触并进行热交换。在备选实施例中，底侧的导流件可限定不同于图示中的横向流路，例如导流件所限定的流路可沿任何方向并可转向，例如可在中间构件的底侧形成迷宫式流路以加强冷却流体与电池单元底侧的接触。
在一些实施例中，中间构件的中部具有导流件，如多个筋26。多个筋26之间限定沿横向的多个横向流路。冷却流体可沿横向流路如箭头B所示的方向从相邻的两个电池单元之间通过，并与相邻的两个电池单元的前侧和后侧直接接触并进行热交换。应当理解，尽管图示的实施例中，中间构件的中部导流件形成为平行于顶侧21和底侧24的水平方向平行地延伸的导流筋，以限定横向流路，在备选的实施例中，中间构件的中部的导流件可具有其他形式，例如可包括沿横向，竖向，纵向，斜向或迷宫式的流路，使得冷却流体能够与相邻对应电池单元的前侧和后侧更充分地接触。
在一些实施例中，中间构件2的第一侧22和第二侧23中的一者或两者可设置有导流件，例如，多个筋221，231。中间构件2的第一侧22和第二侧23的多个筋之间限定了沿纵向的多个纵向流路。冷却流体可沿纵向流路如箭头C所示的方向从电池单元的一侧或两侧通过，并与电池单元的第一侧和/或第二侧直接接触并进行热交换。在备选实施例中，中间构件的第一侧22和第二侧23的导流件可限定非纵向的流路，例如导流件所限定的流路可沿任何方向并可转向，例如可 在中间构件的第一侧和/或第二侧形成迷宫式流路以加强冷却流体与电池单元的第一侧和/或第二侧的接触。
在一些实施例中，中间构件的第一侧22和第二侧23中的一者设置有止流件，如图4所示中示出的，止挡筋222形式的止流件设置在第一侧22的内侧。止挡筋222的存在使得冷却流体完全或大部分不能从第一侧22通过，由此冷却流体被迫沿箭头B以及箭头C的方向绕行。在一些实施例中，在电池模组中，相邻的中间构件布置成使得的相邻中间构件的止流件处于电池模组的相对侧上，换而言之，相邻的中间构件的止挡筋222可间隔地设置在第一侧和第二侧上，由此使得电池模组中的冷却流体基本以图7中箭头所示的“S”型线路通过冷却液体流路。在备选实施例中，可任意地选择电池模组中每个中间构件的各侧和中部的导流件和/或止流件的结构，以使得电池模组中的冷却流体沿其他线路，例如“U”型或“Z”型的线路通过。
在一些实施例中，中间构件2具有沿其周边设置的多个安装孔251,252，其中安装孔252形成为突起以在与相邻的中间构件2接合时与相应的槽口接合，以起到限位作用，使得各个中间构件2能够对齐。在备选实施例中，相邻中间构件2可具有在接合处的其他形式的限位件以限制它们之间的位置关系。在一些实施例中，中间构件2的顶侧21的收缩部，底侧24的筋241，242，第一侧的筋221和第二侧的筋231以及中部的筋26等等共同对电池单元进行限位。
参考图5，其示出了端部构件3的一个实施例。端部构件3包括顶侧31，底侧34，第一侧32和第二侧33。端部构件3可具有与类似于中间构件2的一半的结构并具有端壁35。在电池单元与端部构件3接合时，端壁35与电池单元的前侧或后侧隔开一定距离以形成进流区或出流区。此外，在端部构件3的底侧34、第一侧32和第二侧33上也设置了类似导流件。端部构件3与邻近的中间构件2以及它们之间的电池单元也一起限定了流体流路。此外，在端壁37上可具有冷却流体入口或出口36。在端部构件3的周围可具有与中间构件2位置对应的安装孔35和限位部。
参考图6，其示出了安装部件4的一个实施例。安装部件4可以与端部构件3一体形成，也可如本实施例中所示的单独于端部构件3形成。安装部件4具有呈平板的主体42，主体42周围的安装孔45以及流体导管可通过的开孔46。 安装部件还包括安装螺孔41，整个电池模组可借助于两侧安装部件4的安装螺孔41来固定至动力电池中。在一些实施例中，中间构件2和端部构件3可由塑料材料制成而安装部件4可由金属制成。
参考图7，其示出了冷却流体流路的一个实施例中。冷却流体从冷却流体入口71进入冷却流路的进流区8。之后，部分的冷却流体沿箭头B和C所示的方向绕电池单元流动，另一部分的冷却流体沿箭头A所示的方向，间断地流过各个电池单元的第三侧。最终冷却流体会聚至出流区9，并通过冷却流体出口72排出。在冷却流体流路中可采用阻燃绝缘流体，这样即使冷却流体流路发生泄漏也不会对电池安全性造成影响，该冷却液同时起到阻燃作用，当电池发生强烈挤压或穿刺而发生燃烧时，可充当阻燃剂，防止受损电池对周围其他电池影响，可在一定程度上阻止该现象扩展和延迟事故恶化时间，争取更充足的救援时间，较大程度上提高电池动力系统的安全性。
以上所描述的具体实施例仅为了更清楚地描述本发明的原理，其中清楚地示出或描述了各个部件而使本发明的原理更容易理解。在不脱离本发明的范围的情况下，本领域的技术人员可容易地对本发明进行各种修改或变化。故应当理解的是，这些修改或者变化均应包含在本发明的专利保护范围之内。

Claims (12)

  1. 一种电池模组，其包括：
    沿纵向排列的多个电池单元，所述多个电池单元具有壳体；以及
    设置在相邻的电池单元之间的多个中间构件；
    其特征在于，相邻的所述中间构件流体密封地接合并包围它们之间的电池单元的壳体的至少一部分；
    其中，相邻的所述中间构件与它们之间的电池单元的壳体一起限定冷却流体流路，使得冷却流体从所述中间构件和所述电池单元的壳体之间通过并直接与所述电池单元接触。
  2. 根据权利要求1所述的电池模组，其特征在于，所述中间构件包括相对的第一侧和第二侧，所述中间构件的第一侧和第二侧中的一者具有阻止流体沿纵向通过的止流件，所述中间构件的第一侧和第二侧中的另一者具有允许流体沿纵向通过的纵向流路。
  3. 根据权利要求2所述的电池模组，其特征在于，在所述电池模组中，相邻的所述中间构件布置成使得相邻的所述中间构件的止流件处于所述电池模组的相对侧上。
  4. 根据权利要求1所述的电池模组，其特征在于，所述多个电池单元的外形基本呈立方体，相邻的所述中间构件包围所述电池单元的除电极侧外的五个表面。
  5. 根据权利要求4所述的电池模组，其特征在于，所述中间构件具有与所述电池单元的电极侧相对的第三侧，所述中间构件在所述第三侧上具有沿横向方向的横向流路。
  6. 根据权利要求1所述的电池模组，其特征在于，所述中间构件中部具有导流件以限定相邻电池单元之间的中部流路。
  7. 根据权利要求1所述的电池模组，其特征在于，相邻的所述中间构件在接合处设置有限位部使得相邻的所述中间构件对齐。
  8. 根据权利要求1所述的电池模组，其特征在于，所述电池模组还包括两端处的 端部构件，所述端部构件具有流体入口或流体出口。
  9. 根据权利要求1所述的电池模组，其特征在于，所述电池模组还包括端部构件外侧的安装部件，其中，所述安装部件、端部构件和各个中间构件具有位置对应的多个安装孔，多个螺栓穿过对应的多个孔来将安装部件、端部构件和各个中间构件组装到一起。
  10. 根据权利要求1所述的电池模组，其特征在于，相邻的所述中间构件的接合处以及相邻的所述中间构件与电池单元的接合处设置了密封件。
  11. 根据权利要求1所述的电池模组，其特征在于，所述冷却流体为阻燃绝缘流体。
  12. 一种动力电池，其特征在于，所述动力电池包括如权利要求1-11中任一项所述的电池模组。
PCT/CN2017/091572 2017-04-07 2017-07-04 电池模组和动力电池 WO2018184309A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710223855.4 2017-04-07
CN201710223855.4A CN108695574B (zh) 2017-04-07 2017-04-07 电池模组和动力电池

Publications (1)

Publication Number Publication Date
WO2018184309A1 true WO2018184309A1 (zh) 2018-10-11

Family

ID=63712247

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/091572 WO2018184309A1 (zh) 2017-04-07 2017-07-04 电池模组和动力电池

Country Status (2)

Country Link
CN (1) CN108695574B (zh)
WO (1) WO2018184309A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111180614A (zh) * 2018-11-12 2020-05-19 马勒国际有限公司 蓄电池装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200048648A (ko) * 2018-10-30 2020-05-08 삼성전자주식회사 배터리 셀을 냉각하기 위한 구조체 및 이를 포함하는 배터리 시스템

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009224226A (ja) * 2008-03-17 2009-10-01 Toshiba Corp 電池モジュールおよびこれを備えたバッテリパック
CN101682007A (zh) * 2007-03-01 2010-03-24 江森自控帅福得先进能源动力系统有限责任公司 电池模块
CN203826452U (zh) * 2014-04-08 2014-09-10 淄博贝林电子有限公司 一种具有介质冷却和气体均衡功能的电池模块
CN206059577U (zh) * 2015-04-03 2017-03-29 谢彦君 电池热控制装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101682007A (zh) * 2007-03-01 2010-03-24 江森自控帅福得先进能源动力系统有限责任公司 电池模块
JP2009224226A (ja) * 2008-03-17 2009-10-01 Toshiba Corp 電池モジュールおよびこれを備えたバッテリパック
CN203826452U (zh) * 2014-04-08 2014-09-10 淄博贝林电子有限公司 一种具有介质冷却和气体均衡功能的电池模块
CN206059577U (zh) * 2015-04-03 2017-03-29 谢彦君 电池热控制装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111180614A (zh) * 2018-11-12 2020-05-19 马勒国际有限公司 蓄电池装置
CN111180614B (zh) * 2018-11-12 2024-03-05 马勒国际有限公司 蓄电池装置

Also Published As

Publication number Publication date
CN108695574B (zh) 2022-11-08
CN108695574A (zh) 2018-10-23

Similar Documents

Publication Publication Date Title
TWI604653B (zh) 電池模組
KR102643493B1 (ko) 차량의 배터리 시스템
JP4308515B2 (ja) 電池モジュール
KR101968719B1 (ko) 전지팩 및 이를 조립하는 방법
KR101206272B1 (ko) 전기 차량용 전지셀의 히트 싱크 및 그를 이용한 전지셀 모듈
JP5255817B2 (ja) 電池モジュール
JP2016029660A (ja) 組立効率の良い冷却部材及びそれを用いたバッテリーモジュール
TW201914091A (zh) 具有換熱功能的電池包殼體和電池包
JP2017521816A (ja) 水冷式冷却構造を含む電池モジュール
KR102403695B1 (ko) 이차 전지 및 그 모듈
CN104103871B (zh) 蓄电模块、蓄电装置及风路连接构件
JP2006278337A (ja) 電池モジュール
JP6317438B2 (ja) 電池セルアセンブリ
JP2016091951A (ja) 電池パック
WO2020125805A1 (en) Cooling device for power battery system, power battery system and vehicle
CN112531231B (zh) 被动式安全管理电池包
JP2016225181A (ja) 電源装置
JP2017506424A (ja) 電池モジュール
WO2018184309A1 (zh) 电池模组和动力电池
TWI765076B (zh) 電池組件和動力電池
WO2018209776A1 (zh) 电池模组以及动力电池系统
KR20130126044A (ko) 이차전지모듈
KR20130022107A (ko) 자동차용 배터리 냉각장치
CN217158332U (zh) 电池箱
KR102622141B1 (ko) 고전압 배터리 서브모듈

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17904905

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC

122 Ep: pct application non-entry in european phase

Ref document number: 17904905

Country of ref document: EP

Kind code of ref document: A1