WO2023207209A1 - 电池模组及电子设备 - Google Patents

电池模组及电子设备 Download PDF

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Publication number
WO2023207209A1
WO2023207209A1 PCT/CN2023/070058 CN2023070058W WO2023207209A1 WO 2023207209 A1 WO2023207209 A1 WO 2023207209A1 CN 2023070058 W CN2023070058 W CN 2023070058W WO 2023207209 A1 WO2023207209 A1 WO 2023207209A1
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WO
WIPO (PCT)
Prior art keywords
battery module
battery
plate
module according
upper plate
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PCT/CN2023/070058
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English (en)
French (fr)
Inventor
曹峰峰
龚木红
易昊昊
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湖北亿纬动力有限公司
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Publication of WO2023207209A1 publication Critical patent/WO2023207209A1/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
    • H01M10/615—Heating or keeping warm
    • 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
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • 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

  • This application relates to the field of battery technology, for example, to a battery module and electronic equipment.
  • the battery modules are equipped with a liquid cooling system and a heating system.
  • the standard boxes of battery module boxes used in related technologies have the following solutions: 1. Sheet metal boxes. The boxes are all made of sheet metal splicing and welding, and aluminum liquid cooling pipes are installed at the bottom. The heating film is installed on the side. This solution uses a lot of welding positions for the liquid cooling pipes. It is difficult to install the battery liquid cooling system. The box is heavy and the liquid cooling system takes up a lot of space. At the same time, the heating film is placed on the module. The sides can easily cause the heating film to dry out, causing damage to the internal battery and causing safety accidents; 2. Aluminum box. The box is made of aluminum sheet metal or aluminum profiles spliced and welded. Liquid cooling pipes are arranged at the bottom or around the box.
  • this solution also has the disadvantage of many welding positions, the welding process is complicated, and the risk of coolant leakage in the box is high.
  • the heating film is also placed on the side, which can easily cause the heating film to dry out and have the risk of damaging the battery and causing safety accidents. .
  • This application provides a battery module with a simple and compact structure, which can reduce the difficulty of installation, increase the energy density of the battery module, and prevent coolant leakage.
  • the battery module has higher safety and reliability in use.
  • inventions of the present application provide a battery module.
  • the battery module includes: a bottom plate assembly, an upper case and a plurality of cells.
  • the above-mentioned bottom plate assembly includes an upper plate and a lower plate fixed by friction welding.
  • the upper plate A plurality of ribs are protruding from any one of the plate and the lower plate, and the upper plate and the lower plate are arranged to be relatively engaged so that the space between two adjacent ribs is surrounded by a liquid cooling flow channel.
  • the above-mentioned upper case is buckled above the above-mentioned bottom plate assembly and forms a receiving space with the above-mentioned bottom plate assembly; a plurality of the above-mentioned battery cells are stacked and arranged in the above-mentioned receiving space.
  • the ribs are protruding from the upper plate, and a liquid inlet pipe and a liquid outlet pipe are provided on the upper plate.
  • the liquid inlet pipe and the liquid outlet pipe are connected to the liquid cooling flow channel.
  • the liquid pipe and the above-mentioned liquid outlet pipe are integrally die-cast with the above-mentioned upper plate.
  • the above-mentioned convex ribs are penetration welded to the above-mentioned lower plate.
  • a plug connector is installed on one side of the upper board.
  • the plug connector is configured to be electrically connected to an external battery management system.
  • the side wall of the upper housing is provided with a plug connector connected to the plug connector. Match the mounting holes for installation.
  • liquid inlet pipe, the liquid outlet pipe and the plug connector are all located on the same side of the upper plate.
  • the upper wall of the upper housing is provided with a plurality of reinforcing structures.
  • a plurality of the above-mentioned battery cores form a battery core assembly, and an insulating film is further provided between the upper end surface of the above-mentioned battery core assembly and the inner wall surface of the above-mentioned upper case.
  • the lower wall of the lower plate is coated with a thermal insulation coating.
  • a hoisting structure is provided on any one of the above-mentioned upper layer board and the above-mentioned lower layer board.
  • embodiments of the present application provide an electronic device, which includes the battery module as described in any of the above solutions.
  • the battery module in this application is made of a bottom plate assembly by friction welding the upper plate and the lower plate.
  • the bottom plate assembly plays a load-bearing role in supporting multiple cells.
  • the upper shell only serves to buckle on the bottom plate assembly to accommodate the cells.
  • the function of the accommodation space is only to accommodate the battery cells. It does not need to be made of high-strength and high-thickness casings, which reduces the weight of the upper casing, thereby reducing the total weight of the battery module and greatly increasing the energy of the battery module. Density, its structure is simpler, and installation is more convenient; and either the upper plate or the lower plate is provided with raised ribs. When the upper plate and the lower plate are fixed by friction welding, the upper plate and the lower plate are set to face each other.
  • FIG 1 is an isometric view of the battery module provided by the specific embodiment of the present application.
  • FIG. 2 is an exploded view of the battery module provided by the specific embodiment of the present application.
  • Figure 3 is an isometric view of the base plate assembly provided by the specific embodiment of the present application.
  • Figure 4 is an exploded view of the base plate assembly provided by the specific embodiment of the present application.
  • Figure 5 is a bottom view of the upper plate provided by the specific embodiment of the present application.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral body.
  • It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements.
  • the meanings of the above terms in this application can be understood according to the circumstances.
  • the term “above” or “below” a first feature on a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them.
  • the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature.
  • “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the battery module includes: a bottom plate assembly 100, an upper case 200 and a plurality of cells 300.
  • the bottom plate assembly 100 includes an upper plate 110 fixed by friction welding. and a lower plate 120.
  • a plurality of ribs 111 are protruding from any one of the upper plate 110 and the lower plate 120.
  • the upper plate 110 and the lower plate 120 are arranged to be relatively engaged so that two adjacent ribs 111 are protruded.
  • the space between the ribs 111 is surrounded by a liquid cooling channel 112; the upper case 200 is buckled above the bottom plate assembly 100 and forms an accommodation space with the bottom plate assembly 100; a plurality of the battery cores 300 are stacked in the accommodation space .
  • the base plate assembly 100 is made by friction welding the upper plate 110 and the lower plate 120 .
  • the base plate assembly 100 plays a load-bearing role in supporting multiple cells 300 , and the upper case 200 only serves to buckle on the base plate assembly 100
  • the function of forming the accommodation space for accommodating the battery core 300 is only used to accommodate the battery core 300. It does not need to be made of a high-strength, high-thickness shell, which reduces the weight of the upper shell 200 and thereby reduces the total weight of the battery module, which greatly The energy density of the battery module is improved, and the structure is simpler and the installation is more convenient; and either the upper plate 110 or the lower plate 120 is provided with ribs 111.
  • the upper plate 110 and the lower plate 120 adopt friction After welding and fixation, the upper plate 110 and the lower plate 120 are arranged to be relatively fastened so that the space between two adjacent ribs 111 is surrounded by a liquid cooling channel 112, thereby cooling the battery core 300 on the base plate assembly 100. Or heating, due to the use of friction welding, the sealing performance of the connection is better, which can prevent the coolant from leaking in the base plate assembly 100 and improve the safety and reliability of the battery module.
  • a plug connector 130 is installed on one side of the upper board 110, and the plug connector 130 is configured to be electrically connected to an external battery management system.
  • the side wall of the upper housing 200 is provided with a mounting hole 210 for mounting with the plug connector 130 .
  • the liquid inlet pipe 101 , the liquid outlet pipe 102 and the plug connector 130 are all located on the same side of the upper plate 110 .
  • a plurality of reinforcing structures 230 are provided on the upper wall of the upper housing 200 .
  • the reinforcing structure 230 is a polyhedral convex hull provided on the upper wall surface of the upper case 200, which can improve the mechanical strength of the upper case 200 without increasing the thickness and weight of the upper case 200, preventing the upper case from being damaged.
  • the body 200 is deformed, thereby containing and protecting the battery core 300 inside.
  • a plurality of the above-mentioned battery cores 300 form a battery core assembly 310 .
  • An insulating film 220 is also provided between the upper end surface of the above-mentioned battery core assembly 310 and the inner wall surface of the above-mentioned upper case 200 .
  • multiple battery cells 300 are stacked in 4 columns and 12 rows to form a battery core assembly 310.
  • the core 300 is not scratched or damaged by the upper case 200, and also plays an insulating role to prevent short circuit or leakage of the battery module, thereby improving the safety and reliability of the battery module.
  • the structure of the base plate assembly 100 in this embodiment will be introduced below with reference to FIGS. 3 to 5 .
  • the ribs 111 are protruding from the upper plate 110 , and a liquid inlet pipe 101 and a liquid outlet pipe 102 are provided on the upper plate 110 .
  • the liquid inlet pipe 101 and the liquid outlet pipe 102 are connected to the above-mentioned
  • the liquid cooling flow channel 112, the above-mentioned liquid inlet pipe 101 and the above-mentioned liquid outlet pipe 102 are all integrally die-cast with the above-mentioned upper plate 110.
  • the liquid inlet pipe 101 and the liquid outlet pipe 102 are integrally die-cast with the upper plate 110, which can reduce the welding process, reduce the occurrence of welds, prevent coolant leakage caused by the coolant corroding the joints, and not only improve the appearance of the upper plate 110
  • the integrity is improved, and it is more suitable for automated production and improves production efficiency.
  • the raised ribs 111 are penetratingly welded to the lower plate 120 .
  • friction welding is used on the periphery of the upper plate 110 and the lower plate 120 to prevent coolant leakage.
  • the middle rib 111 is fixed on the lower plate 120 by penetration welding.
  • the position and structure of the penetration weld 121 are shown in Figure 3 , penetration welding can ensure that the lower plate 120 will not be deformed when the coolant flows into the liquid cooling channel 112, ensuring the reliability of the base plate assembly 100.
  • a hoisting structure 103 is provided on any one of the upper plate 110 and the lower plate 120 .
  • the upper plate 110 in this embodiment is provided with the above-mentioned hoisting structure 103.
  • the hoisting structure 103 can facilitate hoisting and transporting the battery module, and the hoisting structure 103 can also be used to stably fix the battery module to an external device. to use the battery module for power supply.
  • the lower wall surface of the lower plate 120 is coated with a thermal insulation coating.
  • the thermal insulation coating can prevent heat exchange between the coolant in the base plate assembly 100 and the external environment below the base plate assembly 100, improve its temperature control efficiency, and ensure that the internal cells 300 of the battery module are always at a suitable operating temperature.
  • This embodiment also provides an electronic device, which includes the battery module as described in any of the above solutions.
  • the electronic device is a battery pack, an electric vehicle, etc., it only needs to be powered by the battery module.

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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)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

本申请公开了一种电池模组及电子设备。该电池模组包括：底板组件、上壳体和多个电芯，底板组件包括摩擦焊接固定的上层板和下层板，上层板和下层板中的任一个上凸设有多个凸筋，上层板和下层板设置成相对扣合以使相邻两个凸筋之间的空间围设成液冷流道；上壳体扣设于底板组件上方并与底板组件形成容纳空间；多个电芯堆叠设置于容纳空间。该电池模组结构简单、紧凑，能够降低安装难度、提高电池模组的能量密度，还能防止冷却液泄漏，该电池模组具有更高的使用安全性与可靠性。

Description

电池模组及电子设备
本公开要求在2022年12月23日提交中国专利局、申请号为202223456595.0的中国专利申请的优先权，以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池技术领域，例如涉及一种电池模组及电子设备。
背景技术
目前，随着电池包能量密度的提升及电池包成本的降低，如何降低电池模组所使用箱体的重量和生产成本是电池包制造领域的一个重要的优化方向，并且对电池寿命同样提出了高标准要求，为了保证电池模组高可靠性的运行并延长电池的使用寿命，电池模组均设置有液冷***和加热***。
相关技术中所使用的电池模组箱体的标准箱有以下几种方案：1、钣金箱体，箱体全部由钣金拼接、焊接而成，底部安装铝材质的液冷管道，模组侧面安装加热膜，此种方案所使用的液冷管道焊接位置较多，安装电池液冷***时操作困难，并且箱体重量较重，液冷***占用空间较大，同时加热膜设置于模组侧面易造成加热膜干烧，造成内部电池的损坏并引发安全事故；2、铝制箱体，箱体由铝材质钣金或者铝型材拼接、焊接而成，箱体底部或者四周布置液冷管道，此种方案同样具有焊接位置较多的缺点，焊接工序比较繁琐，并且箱体内冷却液泄漏风险较大，加热膜同样侧面放置，易造成加热膜干烧并具有损坏电池、引发安全事故的风险。
发明内容
本申请提供了一种电池模组，其结构简单、紧凑，能够降低安装难度、提高电池模组的能量密度，防止冷却液泄漏，该电池模组具有更高的使用安全性与可靠性。
第一方面，本申请实施例提供了一种电池模组，该电池模组包括：底板组件、上壳体和多个电芯，上述底板组件包括摩擦焊接固定的上层板和下层板，上述上层板和上述下层板中的任一个上凸设有多个凸筋，上述上层板和上述下层板设置成相对扣合以使相邻两个上述凸筋之间的空间围设成液冷流道；上述上壳体扣设于上述底板组件上方并与上述底板组件形成容纳空间；多个上述电芯堆叠设置于上述容纳空间。
在一实施例中，上述上层板上凸设有上述凸筋，上述上层板上设置有进液管和出液管，上述进液管和上述出液管连通于上述液冷流道，上述进液管和上 述出液管均与上述上层板一体压铸成型。
在一实施例中，上述凸筋穿透焊接于上述下层板上。
在一实施例中，上述上层板的一侧边上安装有插接件，上述插接件设置为与外部的电池管理***电连接，上述上壳体的侧壁面上开设有与上述插接件配合安装的安装孔。
在一实施例中，上述进液管、上述出液管和上述插接件均位于上述上层板的同一侧边上。
在一实施例中，上述上壳体上壁面设置有多个加强结构。
在一实施例中，多个上述电芯组成电芯组件，上述电芯组件上端面与上述上壳体内壁面之间还设置有绝缘膜。
在一实施例中，上述下层板的下壁面上涂覆有保温涂层。
在一实施例中，上述上层板和上述下层板中的任一个上设置有吊装结构。
第二方面，本申请实施例提供了一种电子设备，该电子设备包括如上述任一方案所述的电池模组。
本申请的有益效果：
本申请中的电池模组通过将上层板和下层板摩擦焊接制成底板组件，底板组件起到支承多个电芯的承重作用，上壳体仅仅起到扣设在底板组件上形成容纳电芯的容纳空间的作用，仅仅用于包容电芯，无需采用高强度、高厚度的壳体制成，降低了上壳体的重量从而降低了电池模组的总重量，大大提高了电池模组的能量密度，同时其结构更加简单，安装也更加方便；并且上层板和下层板中的任一个上凸设有凸筋，当上层板和下层板采用摩擦焊接固定后，上层板和下层板设置成相对扣合以使相邻两个凸筋之间的空间围设成液冷流道，从而对底板组件上的电芯进行降温或加热，由于采用摩擦焊接，其连接处的密封性能更好，能够防止冷却液常底板组件中泄漏，提高了电池模组的使用安全性和可靠性。
附图说明
图1是本申请具体实施方式提供的电池模组的轴测图；
图2是本申请具体实施方式提供的电池模组的***图；
图3是本申请具体实施方式提供的底板组件的轴测图；
图4是本申请具体实施方式提供的底板组件的***图；
图5是本申请具体实施方式提供的上层板的仰视图。
图中：
100、底板组件；101、进液管；102、出液管；103、吊装结构；110、上层板；111、凸筋；120、下层板；112、液冷流道；121、穿透焊缝；130、插接件；
200、上壳体；210、安装孔；220、绝缘膜；230、加强结构；
300、电芯；310、电芯组件。
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。
在本实施例的描述中，术语“上”、“下”、“右”、等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
请参考图1、图4和图5，在本实施例中，该电池模组包括：底板组件100、上壳体200和多个电芯300，上述底板组件100包括摩擦焊接固定的上层板110和下层板120，上述上层板110和上述下层板120中的任一个上凸设有多个凸筋111，上述上层板110和上述下层板120设置成相对扣合以使相邻两个上述凸筋111之间的空间围设成液冷流道112；上述上壳体200扣设于上述底板组件100上方并与上述底板组件100形成容纳空间；多个上述电芯300堆叠设置于上述容纳空间。
本实施例中通过将上层板110和下层板120摩擦焊接制成底板组件100，底板组件100起到支承多个电芯300的承重作用，上壳体200仅仅起到扣设在底板组件100上形成容纳电芯300的容纳空间的作用，仅仅用于包容电芯300，无需采用高强度、高厚度的壳体制成，降低了上壳体200的重量从而降低了电池模组的总重量，大大提高了电池模组的能量密度，同时其结构更加简单，安装也更加方便；并且上层板110和下层板120中的任一个上凸设有凸筋111，当上层板110和下层板120采用摩擦焊接固定后，上层板110和下层板120设置成相对扣合以使相邻两个凸筋111之间的空间围设成液冷流道112，从而对底板组件100上的电芯300进行降温或加热，由于采用摩擦焊接，其连接处的密封性能更好，能够防止冷却 液在底板组件100中泄漏，提高了电池模组的使用安全性和可靠性。
请继续参考图1和图2，在本实施例中，示例性地，上述上层板110的一侧边上安装有插接件130，上述插接件130设置为与外部的电池管理***电连接，上述上壳体200的侧壁面上开设有与上述插接件130配合安装的安装孔210。例如，上述进液管101、上述出液管102和上述插接件130均位于上述上层板110的同一侧边上。通过将进液管101、出液管102和插接件130设置于电池模组的同一侧，在安装、调试和维修时仅需从电池模组的一侧进行，其安装、调试和维修操作更加方便，降低了操作难度，提高了安装和维护效率。
在一实施例中，上述上壳体200上壁面设置有多个加强结构230。本实施例中，该加强结构230为设置于上壳体200上壁面的多面体凸包，能够在不提高上壳体200厚度和重量的情况下，提高上壳体200的机械强度，防止上壳体200出现变形，从而对内部的电芯300起到包容和保护作用。
请继续参考图2，多个上述电芯300组成电芯组件310，上述电芯组件310上端面与上述上壳体200内壁面之间还设置有绝缘膜220。例如，本实施例中多个电芯300呈4列12排堆叠设置，组成一个电芯组件310，通过在电芯组件310与上壳体200内壁面之间设置绝缘膜220，不仅能够保护电芯300不被上壳体200刮伤损坏，还起到绝缘作用，防止电池模组出现短路或漏电，提高了电池模组的使用安全性和可靠性。
下面结合图3至图5介绍本实施例中该底板组件100的结构。
在本实施例中，上述上层板110上凸设有上述凸筋111，上述上层板110上设置有进液管101和出液管102，上述进液管101和上述出液管102连通于上述液冷流道112，上述进液管101和上述出液管102均与上述上层板110一体压铸成型。进液管101和出液管102均与上层板110一体压铸成型，能够减少焊接工序，减少焊缝的出现，能够防止冷却液腐蚀连接处而造成的冷却液泄漏，不仅使得上层板110外观的整体性得到提高，还更加适用于自动化生产，提高生产效率。
在一实施例中，上述凸筋111穿透焊接于上述下层板120上。例如，上层板110和下层板120外周采用摩擦焊接，防止冷却液泄漏，中间的凸筋111采用穿透焊接固定于下层板120上，其穿透焊缝121的位置和结构如图3所示，穿透焊接能够保证冷却液流入液冷流道112时下层板120不会出现变形，保证了底板组件100的使用可靠性。
请参考图5，在一实施例中，上述上层板110和上述下层板120中的任一个上设置有吊装结构103。例如，本实施例中的上层板110上设置有上述吊装结构103，该吊装结构103能够方便吊装转运该电池模组，并且该吊装结构103还可用于将该电池模组稳定地固定在外部设备上，以便使用该电池模组进行供电。
在一实施例中，上述下层板120的下壁面上涂覆有保温涂层。该保温涂层能够防止底板组件100中冷却液与底板组件100下方的外部环境出现热量交换，提高其温度控制效率，保证电池模组内部电芯300始终处于适宜的工作温度。
本实施例还提供了一种电子设备，该电子设备包括如上述任一方案所述的电池模组。例如，该电子设备为电池包、电动汽车等，只需使用该电池模组供电即可。

Claims (10)

  1. 一种电池模组，包括：
    底板组件(100)，所述底板组件(100)包括摩擦焊接固定的上层板(110)和下层板(120)，所述上层板(110)和所述下层板(120)中的任一个上凸设有多个凸筋(111)，所述上层板(110)和所述下层板(120)设置成相对扣合以使相邻两个所述凸筋(111)之间的空间围设成液冷流道(112)；
    上壳体(200)，所述上壳体(200)扣设于所述底板组件(100)上方并与所述底板组件(100)形成容纳空间；
    多个电芯(300)，多个所述电芯(300)堆叠设置于所述容纳空间。
  2. 根据权利要求1所述的电池模组，其中，所述上层板(110)上凸设有所述凸筋(111)，所述上层板(110)上设置有进液管(101)和出液管(102)，所述进液管(101)和所述出液管(102)连通于所述液冷流道(112)，所述进液管(101)和所述出液管(102)均与所述上层板(110)一体压铸成型。
  3. 根据权利要求2所述的电池模组，其中，所述凸筋(111)穿透焊接于所述下层板(120)上。
  4. 根据权利要求3所述的电池模组，其中，所述上层板(110)的一侧边上安装有插接件(130)，所述插接件(130)设置为与外部的电池管理***电连接，所述上壳体(200)的侧壁面上开设有与所述插接件(130)配合安装的安装孔(210)。
  5. 根据权利要求4所述的电池模组，其中，所述进液管(101)、所述出液管(102)和所述插接件(130)均位于所述上层板(110)的同一侧边上。
  6. 根据权利要求1-5任一项所述的电池模组，其中，所述上壳体(200)上 壁面设置有多个加强结构(230)。
  7. 根据权利要求1-5任一项所述的电池模组，其中，多个所述电芯(300)组成电芯组件(310)，所述电芯组件(310)上端面与所述上壳体(200)内壁面之间还设置有绝缘膜(220)。
  8. 根据权利要求1-5任一项所述的电池模组，其中，所述下层板(120)的下壁面上涂覆有保温涂层。
  9. 根据权利要求1-5任一项所述的电池模组，其中，所述上层板(110)和所述下层板(120)中的任一个上设置有吊装结构(103)。
  10. 一种电子设备，包括如权利要求1-9任一项所述的电池模组。
PCT/CN2023/070058 2022-12-23 2023-01-03 电池模组及电子设备 WO2023207209A1 (zh)

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