WO2024055380A1 - 一种电池包 - Google Patents

一种电池包 Download PDF

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Publication number
WO2024055380A1
WO2024055380A1 PCT/CN2022/124957 CN2022124957W WO2024055380A1 WO 2024055380 A1 WO2024055380 A1 WO 2024055380A1 CN 2022124957 W CN2022124957 W CN 2022124957W WO 2024055380 A1 WO2024055380 A1 WO 2024055380A1
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WO
WIPO (PCT)
Prior art keywords
housing
box
shell
battery pack
battery
Prior art date
Application number
PCT/CN2022/124957
Other languages
English (en)
French (fr)
Inventor
黄伟才
Original Assignee
湖北亿纬动力有限公司
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Filing date
Publication date
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 WO2024055380A1 publication Critical patent/WO2024055380A1/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
    • 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
    • H01M50/233—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
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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 field of battery technology, for example, to a battery pack.
  • the waterproof design of the battery pack is generally achieved by relying on the external battery box to prevent rainwater from entering the battery box and protect the battery pack inside the battery box.
  • This application provides a battery pack with good waterproof performance, which reduces the risk of internal cells and BMS coming into contact with water.
  • the embodiment of the present application provides a battery pack, including:
  • the battery box includes a box cover and a box body.
  • the box cover is sealingly connected to the box body and surrounds a protective cavity;
  • a waterproof shell is arranged in the protection cavity, and a sealed cavity is formed in the waterproof shell;
  • the module body is arranged in the sealed cavity.
  • a heat dissipation member is also included.
  • the heat dissipation member is inserted through the waterproof shell and is sealingly connected to the waterproof shell.
  • the module body is connected to the battery box through the heat dissipation member.
  • the heat dissipation component is a heat conduction plate
  • the waterproof shell is provided with a heat dissipation port
  • the heat conduction plate is blocked in the heat dissipation port
  • one side of the heat conduction plate is connected to the module body
  • the other side is connected to the module body.
  • One side is connected to the battery box.
  • the box cover includes a cover body and a heat transfer plate.
  • the cover body is provided with a heat transfer port.
  • the heat transfer plate blocks the heat transfer port.
  • the heat dissipation member is connected to the heat transfer plate. boards are connected.
  • the module body includes a battery management module, and the heat sink is connected to the battery management module.
  • the waterproof shell includes a first shell and a second shell, and the first shell and the second shell are sealingly engaged and enclose the sealed cavity.
  • the waterproof shell further includes a first sealing ring, and the first sealing ring is sandwiched between the first housing and the second housing.
  • the first housing is provided with a limiting groove, and the first sealing ring is disposed in the limiting groove.
  • a first limiting protrusion is provided on the inner wall of the first housing, and the first limiting protrusion extends into the second housing and resists against the second housing.
  • a second limiting protrusion is provided on the inner wall of the second housing. The second limiting protrusion extends into the first housing and resists against the inner wall of the first housing. superior.
  • the waterproof shell further includes a connecting component, and the first housing and the second housing are fixedly connected through the connecting component.
  • the battery box further includes a second sealing ring, and the second sealing ring is sandwiched between the box cover and the box body.
  • the lid and the box body are sealed and connected to form a first-level waterproof barrier, that is, the battery box.
  • the waterproof shell is located in the battery box and has a sealed cavity inside.
  • the sealed cavity forms a second-level waterproof barrier, which is located in the waterproof case.
  • the module body inside the shell is protected by a two-level waterproof barrier, which reduces the risk of water contact and effectively improves the waterproof performance.
  • Figure 1 is an outer outline view of a battery pack provided by an embodiment of the present application
  • FIG. 2 is an exploded view of the battery pack provided by the embodiment of the present application.
  • FIG. 3 is an exploded view two of the battery pack provided by the embodiment of the present application.
  • Figure 4 is an enlarged view of point A in Figure 3.
  • Module body 31. Battery management module; 32. Battery cell pack;
  • 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 to 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 that the first feature is directly above or diagonally above the second feature, or simply means that the level of the first feature is higher than that of the second feature.
  • horizontal height “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 horizontal height of the first feature is less than the horizontal height of the second feature.
  • this embodiment provides a battery pack, which can be used in electric vehicles and has a compact structure and good waterproofness.
  • the battery pack includes a battery box 1, a waterproof case 2 and a module body 3.
  • the battery box 1 includes a box cover 11 and a box body 12.
  • the box cover 11 and the box body 12 are sealed and connected to form a protective cavity.
  • the box cover 11 and the box body 12 are connected through a plurality of screws, making it easy to disassemble and assemble.
  • the waterproof shell 2 is arranged in the protection cavity.
  • the waterproof case 2 can be made of metal or plastic, for example, to form a clearly contoured case.
  • the waterproof shell 2 is a plastic shell.
  • the plastic shell is elastic and has deformation resistance. The elasticity of the plastic shell can buffer part of the impact force, and the deformation resistance can protect the module body 3 inside. Force.
  • the module body 3 is arranged in the sealed cavity. As shown in FIG. 3 , by way of example, the module body 3 includes a battery management module 31 and a battery pack 32 .
  • the battery management module 31 is disposed on the battery pack 32 and is electrically connected to the battery pack 32 .
  • the battery management module 31 is configured to collect information such as power, voltage, and temperature of the battery pack 32 , and manage the charge and discharge of each battery cell in the battery pack 32 .
  • the battery management module 31 is integrated on one side of the battery pack 32, is accommodated in the waterproof case 2 together with the battery pack 32, and is protected by the waterproof shell 2 and the battery box 1.
  • the battery box 1 forms the outermost protective barrier, which can protect the waterproof shell 2 in the protection cavity.
  • the box body 12 and the box cover 11 are sealingly connected to prevent the waterproof shell 2 from contacting water.
  • the module body 3 is assembled inside the waterproof shell 2.
  • the waterproof shell 2 serves as the second layer of protective barrier of the module body 3 and directly protects the module body 3. When the battery box 1 is damaged, the waterproof shell 2 can prevent the module body 3 from contacting water, thereby reducing the risk of the module body 3 contacting water.
  • the waterproof shell 2 includes a first shell 21 and a second shell 22.
  • the first shell 21 and the second shell 22 are sealed and engaged to form a sealed cavity. That is to say, the first shell 21 and the second shell 22 are engaged with each other, so that the module body 3 can be easily installed in the waterproof shell 2 to achieve waterproof protection of the module body 3 .
  • the first shell 21 and the second shell 22 are both rectangular-like shells to match the structures of the battery box 1 and the module body 3.
  • the first shell 21 and the second shell 22 are both rectangular-shaped shells.
  • the shape of the housing 22 can be adaptively changed according to the structural shapes of the battery box 1 and the module body 3 .
  • the waterproof shell 2 further includes a connecting component 24 through which the first housing 21 and the second housing 22 are fixedly connected.
  • the connecting component 24 is a connecting bolt, and the first housing 21 and the second housing 22 are fixedly connected through the connecting bolt.
  • the connection is reliable and the disassembly and assembly are easy.
  • the first housing 21 and the second housing 22 can also be fixed through common connection methods such as snap connection, bonding, and welding.
  • the waterproof housing 2 further includes a first sealing ring 23 , and the first sealing ring 23 is sandwiched between the first housing 21 and the second housing 22 . That is to say, by providing the first sealing ring 23, the sealing performance of the waterproof housing 2 is increased, and the waterproof effect is improved.
  • the first sealing ring 23 can be made of rubber, foam or soft plastic. When the first housing 21 and the second housing 22 are engaged, the first sealing ring 23 is squeezed to fill the first housing 21 and the second housing 22 to achieve sealing.
  • the first housing 21 is provided with a limiting groove 212 , and the first sealing ring 23 is disposed in the limiting groove 212 .
  • a closed-loop limiting groove 212 is provided along the edge of the groove.
  • the first sealing ring 23 is stuck in the limiting groove 212.
  • a first limiting protrusion 211 is provided on the inner wall of the first housing 21 , and the first limiting protrusion 211 extends into the second housing 22 and resists the second
  • a second limiting protrusion (not shown in the figure) is provided on the inner wall of the housing 22 and the second housing 22. The second limiting protrusion extends into the first housing 21 and resists the inner wall of the second housing 22. on the inner wall of the first housing 21 .
  • a plurality of first limiting protrusions 211 are arranged at intervals on each side wall of the first housing 21 , and along the circumferential direction of the groove edge of the second housing 22 .
  • a plurality of second limiting protrusions are arranged on each side wall of the second housing 22 at intervals in the circumferential direction of the groove edge.
  • the first housing 21 and the second housing 22 limit each other through the first limiting protrusion 211 and the second limiting protrusion to prevent the first housing 21 and the second housing 22 from interlocking with each other on the interlocking surface. misaligned with each other.
  • the first limiting protrusion 211 and the second limiting protrusion are both provided with guide surfaces.
  • the battery box 1 further includes a second sealing ring 13 , and the second sealing ring 13 is sandwiched between the box cover 11 and the box body 12 . That is to say, the second sealing ring 13 increases the sealing performance of the battery box 1 and improves the sealing effect of the battery box 1 .
  • the second sealing ring 13 can be designed and installed with reference to the first sealing ring 23 , which will not be described again here.
  • the battery pack further includes a heat sink 4, which passes through the waterproof case 2 and is sealingly connected to the waterproof case 2.
  • the module body 3 is connected to the battery box 1 through the heat sink 4. That is to say, the heat sink 4 is connected between the module body 3 and the battery box 1.
  • the heat generated by the module body 3 during the charging and discharging process can be conducted to the battery box 1 through the heat sink 4, and is exchanged with the outside world through the battery box 1. heat to achieve rapid heat dissipation.
  • the heat sink 4 is made of a material with a large thermal conductivity, such as a metal material, for example, an aluminum alloy material, which has good thermal conductivity and is light in weight, which is beneficial to reducing the overall weight of the battery pack. weight.
  • the shape of the heat sink 4 is not limited, such as a rod or a plate, etc.
  • the heat dissipation member 4 is a heat conduction plate.
  • the waterproof shell 2 is provided with a heat dissipation port.
  • the heat conduction plate is blocked in the heat dissipation port.
  • One side of the heat conduction plate is connected to the module body 3 and the other side is connected to the battery box 1 .
  • the thermal conductive plate can form a larger heat dissipation area, thereby improving the heat dissipation effect.
  • a heat dissipation port is opened on the first housing 21 close to the battery management module 31 .
  • the heat conduction plate is fixed on the periphery of the heat dissipation port through bolts.
  • the inner side of the heat conduction plate is connected to the battery management module 31 .
  • the battery management module 31 heat dissipation.
  • sealant is additionally coated between the heat conduction plate and the first housing 21 .
  • the box cover 11 includes a cover body 111 and a heat transfer plate 112.
  • the cover body 111 is provided with a heat transfer port
  • the heat transfer plate 112 blocks the heat transfer port
  • the heat sink 4 is connected to the heat transfer plate 112.
  • the heat transfer plate 112 is in direct contact with the outside of the battery box 1 for heat exchange, which facilitates the rapid dissipation of heat conducted by the module body 3 on the heat sink 4 and avoids heat accumulation on the module body 3 .
  • the heat transfer plate 112 is fixed on the box cover 11 by bolts, the outer side of the heat transfer plate 112 is exposed outside the battery box 1, and the inner side of the heat transfer plate 112 is in contact with the outer side of the heat sink 4. conduct heat.
  • the heat transfer plate 112 is an aluminum alloy plate.
  • the battery pack 32 and the battery management module 31 are integrated into the module body 3.
  • the module body 3 is accommodated in the waterproof shell 2.
  • the first shell 21 and the second shell 22 are interlocked and passed through
  • the connecting bolts are firmly connected to form a sealed waterproof shell 2 to prevent the module body 3 from contacting water.
  • the waterproof shell 2 is housed in the box 12, and the box cover 11 is connected to the box 12 by bolts, sealing the box 12 and forming another protective barrier, further reducing the risk of the module body 3 contacting water.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请提供了一种电池包，其包括电池箱、防水壳和模组本体。电池箱包括箱盖和箱体，箱盖与箱体密封连接，并围成保护腔。防水壳设置在保护腔中，防水壳内形成密封腔。模组本体设置在密封腔中。箱盖和箱体密封连接形成第一级防水屏障，密封腔形成第二级防水屏障，位于防水壳内的模组本体受到两级防水屏障的保护，触水风险更低，有效提高了防水性能。

Description

一种电池包
本申请要求在2022年09月15日提交中国专利局、申请号为202222443377.7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
本申请涉及电池技术领域，例如涉及一种电池包。
背景技术
在传统两轮电动车上，电池包防水的设计，一般都是依靠外部的电池箱来实现的，以阻挡雨水进入电池箱内部，保护电池箱内部的电池包。
然而，这种设计使得电池包的防水完全依赖于电池箱，在电池包处于长时间的浸泡、受到跌落、碰撞、挤压等外力作用或高温、高湿、振动频繁等恶劣环境下时，电池箱的密封处往往最先发生破损，而出现防水失效，此时，电池管理***(Battery Management System，BMS)也会失效甚至短路起火***，导致整个电池包完全损坏。
发明内容
本申请提供了一种电池包，防水性能好，降低了内部电芯和BMS触水的风险。
本申请实施例提供了一种电池包，包括：
电池箱，包括箱盖和箱体，所述箱盖与所述箱体密封连接，并围成保护腔；
防水壳，设置在所述保护腔中，所述防水壳内形成密封腔；
模组本体，设置在所述密封腔中。
示例性地，还包括散热件，所述散热件穿设于所述防水壳，且与所述防水壳密封连接，所述模组本体通过所述散热件与所述电池箱相连。
示例性地，所述散热件为导热板，所述防水壳上开设有散热口，所述导热板封堵于所述散热口，所述导热板的一侧与所述模组本体相连，另一侧与所述电池箱相连。
示例性地，所述箱盖包括盖体和传热板，所述盖体上开设有传热口，所述传热板封堵于所述传热口，所述散热件与所述传热板相连。
示例性地，所述模组本体包括电池管理模块，所述散热件与所述电池管理 模块相连。
示例性地，所述防水壳包括第一壳体和第二壳体，所述第一壳体和所述第二壳体密封扣合，并围成所述密封腔。
示例性地，所述防水壳还包括第一密封圈，所述第一密封圈夹设在所述第一壳体和所述第二壳体之间。
示例性地，所述第一壳体上设有限位槽，所述第一密封圈设置在所述限位槽中。
示例性地，所述第一壳体的内壁上设有第一限位凸起，所述第一限位凸起延伸至所述第二壳体内，且抵持在所述第二壳体的内壁上，所述第二壳体的内壁上设有第二限位凸起，所述第二限位凸起延伸至所述第一壳体内，且抵持在所述第一壳体的内壁上。
示例性地，所述防水壳还包括连接部件，所述第一壳体和所述第二壳体通过所述连接部件固连。
示例性地，所述电池箱还包括第二密封圈，所述第二密封圈夹设于所述箱盖和所述箱体之间。
本申请的有益效果：
本申请提供的电池包，箱盖和箱体密封连接形成第一级防水屏障，即电池箱，防水壳位于电池箱内，其内设有密封腔，密封腔形成第二级防水屏障，位于防水壳内的模组本体受到两级防水屏障的保护，触水风险更低，有效提高了防水性能。
附图说明
图1是本申请实施例提供的电池包的外轮廓图；
图2是本申请实施例提供的电池包的***图一；
图3是本申请实施例提供的电池包的***图二；
图4是图3中A处的放大图。
图中：
1、电池箱；11、箱盖；111、盖体；112、传热板；12、箱体；13、第二密封圈；
2、防水壳；21、第一壳体；211、第一限位凸起；212、限位槽；22、第二壳体；23、第一密封圈；24、连接部件；
3、模组本体；31、电池管理模块；32、电芯组；
4、散热件。
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的水平高度高于第二特征的水平高度。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的水平高度小于第二特征的水平高度。
在本实施例的描述中，术语“上”、“下”、“右”、“左”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，因此不能理解为对本申请的限制。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。
如图1-图3所示，本实施例提供了一种电池包，可将该电池包应用于电动车中，结构紧凑，防水性好。电池包包括电池箱1、防水壳2和模组本体3。
电池箱1包括箱盖11和箱体12，箱盖11与箱体12密封连接，并围成保护腔。在本实施例中，箱盖11与箱体12之间通过多个螺钉连接，拆装方便。
如图3所示，防水壳2设置在保护腔中。防水壳2可以由如金属或塑料等制成，以形成轮廓清晰的壳体。在本实施例中，防水壳2为塑胶壳，塑胶壳具有弹性的同时也具有抗变形能力，塑胶壳的弹性能够缓冲部分冲击力，而抗变形能力则能够保护内部的模组本体3不直接受力。
模组本体3设置在密封腔中。如图3所示，示例性地，模组本体3包括电池管理模块31和电芯组32，电池管理模块31设置在电芯组32上，且与电芯组32电性连接。电池管理模块31设置为采集电芯组32的电量、电压及温度等信息，并对电芯组32中每个电芯的充放电进行管理。在本实施例中，电池管理模 块31集成在电芯组32的一侧，与电芯组32共同容纳在防水壳2中，受防水壳2和电池箱1保护。
电池箱1形成最外层的防护屏障，能够对保护腔内的防水壳2进行保护。箱体12和箱盖11密封连接，从而避免防水壳2触水。在防水壳2内装配有模组本体3，防水壳2作为模组本体3的第二层的防护屏障，直接对模组本体3进行保护。当电池箱1出现破损后，防水壳2能够避免模组本体3触水，从而降低了模组本体3的触水风险。
示例性地，防水壳2包括第一壳体21和第二壳体22，第一壳体21和第二壳体22密封扣合，并围成密封腔。也就是说，第一壳体21和第二壳体22相互扣合，能够方便地将模组本体3安装在防水壳2内，实现对模组本体3的防水保护。在本实施例中，第一壳体21和第二壳体22均为类矩形壳，以匹配电池箱1及模组本体3的结构，在其他实施例中，第一壳体21和第二壳体22的形状可以根据电池箱1及模组本体3的结构形状进行适应性改变。
示例性地，防水壳2还包括连接部件24，第一壳体21和第二壳体22通过连接部件24固连。参见图4，在本实施例中，连接部件24为连接螺栓，第一壳体21和第二壳体22通过连接螺栓固连，连接可靠，拆装方便。在其他实施例中，第一壳体21和第二壳体22之间还可以通过卡扣连接、粘接、焊接等常见的连接方式进行固连。
如图3所示，示例性地，防水壳2还包括第一密封圈23，第一密封圈23夹设在第一壳体21和第二壳体22之间。也就是说，通过设置第一密封圈23增加了防水壳2的密封性，提高了防水效果。第一密封圈23可以由橡胶、泡棉或软塑料等材料制成，第一壳体21和第二壳体22相扣合时，第一密封圈23受挤压，填充第一壳体21和第二壳体22之间的间隙，实现密封。
如图4所示，示例性地，第一壳体21上设有限位槽212，第一密封圈23设置在限位槽212中。在第一壳体21上，沿槽缘设有闭环的限位槽212，第一密封圈23卡在限位槽212内，相对扣合的第一壳体21和第二壳体22对第一密封圈23施加的力使第一密封圈23整体限位在限位槽212中，密封效果好。
如图4所示，示例性地，第一壳体21的内壁上设有第一限位凸起211，第一限位凸起211延伸至第二壳体22内，且抵持在第二壳体22的内壁上，第二壳体22的内壁上设有第二限位凸起(图中未示出)，第二限位凸起延伸至第一壳体21内，且抵持在第一壳体21的内壁上。在本实施例中，沿第一壳体21的槽缘的周向，多个第一限位凸起211间隔设置在第一壳体21的每个侧壁上，沿第二壳体22的槽缘的周向，多个第二限位凸起间隔设置在第二壳体22的每个侧壁上。第一壳体21和第二壳体22通过第一限位凸起211和第二限位凸起相 互限位，避免相互扣合的第一壳体21和第二壳体22在扣合面上相互错位。为便于第一壳体21和第二壳体22之间相互扣合，第一限位凸起211和第二限位凸起上均设有导向面。
如图2所示，在本实施例中，电池箱1还包括第二密封圈13，第二密封圈13夹设于箱盖11和箱体12之间。也就是说，通过第二密封圈13增加了电池箱1的密封性，提高了电池箱1的密封效果。在本实施例中，第二密封圈13可以参照第一密封圈23设计并安装，在此处不再赘述。
示例性地，电池包还包括散热件4，散热件4穿设于防水壳2，且与防水壳2密封连接，模组本体3通过散热件4与电池箱1相连。也就是说，散热件4连接于模组本体3和电池箱1之间，模组本体3在充放电过程中产生的热量能够通过散热件4传导至电池箱1，经电池箱1与外界换热，实现快速散热。为实现良好的散热效果，散热件4由导热系数较大的材料制成，如金属类材料，示例性地，如，铝合金材料，导热性能好，且重量轻，有利于降低电池包的整体重量。
散热件4的形状不限，如杆件或板材等等。在本实施例中，散热件4为导热板，防水壳2上开设有散热口，导热板封堵于散热口，导热板的一侧与模组本体3相连，另一侧与电池箱1相连。导热板能够形成较大的散热面积，从而提高散热效果。在本实施例中，散热口靠近电池管理模块31开设在第一壳体21上，导热板通过螺栓固定在散热口的周缘，导热板的内侧面与电池管理模块31相连，对电池管理模块31散热。为确保导热板密封封堵散热口，导热板与第一壳体21之间还增涂有密封胶。
如图1所示，箱盖11包括盖体111和传热板112，盖体111上开设有传热口，传热板112封堵于传热口，散热件4与传热板112相连。传热板112与电池箱1外部直接接触换热，便于将模组本体3传导在散热件4上的热量快速消散，避免模组本体3上热量聚集。在本实施例中，传热板112通过螺栓固定在箱盖11上，传热板112的外侧面暴露在电池箱1外，传热板112的内侧面与散热件4的外侧面贴合，进行导热。在本实施例中，传热板112为铝合金板。
本实施例提供的电池包，电芯组32和电池管理模块31集成为模组本体3，模组本体3容纳在防水壳2内，第一壳体21和第二壳体22相互扣合并通过连接螺栓固连形成密封的防水壳2，以避免模组本体3触水。防水壳2容置在箱体12中，箱盖11通过螺栓固连在箱体12上，将箱体12密封，形成又一道保护屏障，进一步降低了模组本体3触水的风险。

Claims (11)

  1. 一种电池包，包括：
    电池箱(1)，包括箱盖(11)和箱体(12)，所述箱盖(11)与所述箱体(12)密封连接，并围成保护腔；
    防水壳(2)，设置在所述保护腔中，所述防水壳(2)内形成密封腔；
    模组本体(3)，设置在所述密封腔中。
  2. 根据权利要求1所述的电池包，还包括散热件(4)，所述散热件(4)穿设于所述防水壳(2)，且与所述防水壳(2)密封连接，所述模组本体(3)通过所述散热件(4)与所述电池箱(1)相连。
  3. 根据权利要求2所述的电池包，其中，所述散热件(4)为导热板，所述防水壳(2)上开设有散热口，所述导热板封堵于所述散热口，所述导热板的一侧与所述模组本体(3)相连，另一侧与所述电池箱(1)相连。
  4. 根据权利要求2所述的电池包，其中，所述箱盖(11)包括盖体(111)和传热板(112)，所述盖体(111)上开设有传热口，所述传热板(112)封堵于所述传热口，所述散热件(4)与所述传热板(112)相连。
  5. 根据权利要求2所述的电池包，其中，所述模组本体(3)包括电池管理模块(31)，所述散热件(4)与所述电池管理模块(31)相连。
  6. 根据权利要求1-5任一项所述的电池包，其中，所述防水壳(2)包括第一壳体(21)和第二壳体(22)，所述第一壳体(21)和所述第二壳体(22)密封扣合，并围成所述密封腔。
  7. 根据权利要求6所述的电池包，其中，所述防水壳(2)还包括第一密封圈(23)，所述第一密封圈(23)夹设在所述第一壳体(21)和所述第二壳体(22)之间。
  8. 根据权利要求7所述的电池包，其中，所述第一壳体(21)上设有限位槽(212)，所述第一密封圈(23)设置在所述限位槽(212)中。
  9. 根据权利要求6所述的电池包，其中，所述第一壳体(21)的内壁上设有第一限位凸起(211)，所述第一限位凸起(211)延伸至所述第二壳体(22)内，且抵持在所述第二壳体(22)的内壁上，所述第二壳体(22)的内壁上设有第二限位凸起，所述第二限位凸起延伸至所述第一壳体(21)内，且抵持在所述第一壳体(21)的内壁上。
  10. 根据权利要求6所述的电池包，其中，所述防水壳(2)还包括连接部件(24)，所述第一壳体(21)和所述第二壳体(22)通过所述连接部件(24)固连。
  11. 根据权利要求1-5任一项所述的电池包，其中，所述电池箱(1)还包括第二密封圈(13)，所述第二密封圈(13)夹设于所述箱盖(11)和所述箱体(12)之间。
PCT/CN2022/124957 2022-09-15 2022-10-12 一种电池包 WO2024055380A1 (zh)

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