WO2020015474A1 - 电池冷却组件 - Google Patents

电池冷却组件 Download PDF

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Publication number
WO2020015474A1
WO2020015474A1 PCT/CN2019/090514 CN2019090514W WO2020015474A1 WO 2020015474 A1 WO2020015474 A1 WO 2020015474A1 CN 2019090514 W CN2019090514 W CN 2019090514W WO 2020015474 A1 WO2020015474 A1 WO 2020015474A1
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WO
WIPO (PCT)
Prior art keywords
hole
current collecting
wall
extension
battery cooling
Prior art date
Application number
PCT/CN2019/090514
Other languages
English (en)
French (fr)
Inventor
茆凯源
黄小腾
谷燕龙
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to EP19762694.8A priority Critical patent/EP3618170B1/en
Priority to US16/568,963 priority patent/US11652245B2/en
Publication of WO2020015474A1 publication Critical patent/WO2020015474A1/zh

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/165—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using additional preformed parts, e.g. sleeves, gaskets
    • F28F9/167—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using additional preformed parts, e.g. sleeves, gaskets the parts being inserted in the heat-exchange conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/185—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding with additional preformed parts
    • 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
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage
    • 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 battery cooling technology, and in particular, to a battery cooling assembly.
  • Liquid cooling plates are widely used in cooling systems of new energy vehicle power battery packs, and have the advantages of light weight, safety and reliability.
  • a battery cooling assembly including: a cooling tube; a current collecting tube provided with a current collecting hole on the current collecting tube; a connection aid, the connection assist including a substrate, and a through hole on the substrate.
  • the hole wall of the through hole extends outward to form an extension; the end of the cooling pipe is connected to the extension through the through hole, the base plate is connected to the current collecting tube, and the through hole is in communication with the current collecting hole.
  • the extension extends unidirectionally along the through-hole axis.
  • the extension projects into the current collecting hole.
  • the extension has a tubular structure.
  • the cross-sectional shape of the extension portion matches the shape of the current collecting hole, and the extension portion projects into the current collecting channel of the current collecting tube through the current collecting hole.
  • the hole edge of the collecting hole is composed of a top edge, a bottom edge, and two side edges
  • the hole wall of the through hole is composed of a top hole wall, a bottom hole wall, and two side hole walls.
  • the extension portion is extended from the bottom hole wall, and the extension portion abuts on the bottom edge of the current collecting hole.
  • the current collecting tube is composed of a top wall, a bottom wall, and two side walls, the current collecting holes are disposed on one of the side walls, and the distance between the top edge of the current collecting holes and the top wall is greater than The distance from the bottom edge of the orifice to the bottom wall.
  • a bottom edge of the current collecting hole is aligned with an inner surface of the bottom wall.
  • the two surfaces of the substrate are a first surface and a second surface
  • the extension is formed on the second surface
  • a chamfered portion is provided at the through hole of the first surface
  • the extension is formed when the through hole is punched on the substrate using a stamping process.
  • the battery cooling module of the above technical solution is provided with a connection auxiliary member at the connection between the current collecting hole of the current collecting tube and the cooling tube. Collecting headers to increase the connection area between the cooling tubes and the headers, increase the connection strength between the two, thereby ensuring good sealing and reducing the risk of leakage of the cooling medium.
  • Figure 1a is a perspective view of a water-cooled plate in the prior art
  • Figure 1b is a front view of the water-cooled plate shown in Figure 1a;
  • Figure 2a shows an exploded view of a battery cooling assembly
  • Figure 2b is a perspective view of a battery cooling assembly
  • Figure 2c is a cross-sectional view of a battery cooling assembly
  • FIG. 2d is an enlarged view of part A in FIG. 2c;
  • Figure 3a shows a first perspective view of a connection aid
  • Figure 3b shows a second perspective view of the connection aid
  • Figure 3c shows a side view of the connection aid shown in Figure 3a;
  • Figure 4a is a cross-sectional view of a battery cooling assembly
  • FIG. 4b is an enlarged view of a portion B in FIG. 4a;
  • Figure 4c shows a perspective view of the connection aid.
  • the current collecting pipe 2 is generally a square pipe or a round pipe, and the current collecting pipe 2 is opened on the current collecting pipe 2.
  • this embodiment provides a battery cooling assembly 100, including:
  • Cooling pipe 1 The cooling medium is passed through the cooling pipe 1.
  • the cooling medium may be a liquid or a gas; the cooling pipe 1 is usually provided in the battery system to take away the battery heat, thereby achieving the cooling of the battery system.
  • Collecting tube 2 the collecting tube 2 is provided with collecting holes 24; the collecting channel of the collecting tube 2 has the function of distributing and collecting cooling medium.
  • two collecting tubes 2 may connect multiple cooling tubes 1 in parallel. Together, one of the headers 2 distributes the cooling medium to all the cooling tubes 1, and the cooling medium in all the cooling tubes 1 is collected into the other header 2.
  • connection aid 3 includes a base plate 31.
  • the base plate 31 is provided with a through hole 32, and the hole wall of the through hole 32 extends outward to form an extension portion 33.
  • the battery cooling module 100 is provided with a connection aid 3 at the connection between the current collecting hole 24 of the current collecting tube 2 and the cooling tube 1, that is, the end of the cooling tube 1 is connected to the extension portion 33 through the through hole 32, and the substrate 31 is connected to the current collecting tube.
  • the through-hole 32 communicates with the collecting hole 24; the connection between the end of the cooling pipe 1 and the through-hole 32 is made stronger by the extension 33, and the connection aid 3 and the collecting pipe 2 are made through the substrate 31
  • the connection is stronger, so as to increase the connection area between the cooling pipe 1 and the header 2 and increase the connection strength between the two, thereby ensuring good sealing and reducing the risk of leakage of the cooling medium.
  • the cross-sectional shape of the cooling pipe 1 may be rectangular, circular, triangular, or rectangular.
  • the cooling tube 1 may be a harmonica tube, which has a plurality of cooling channels parallel to each other, so that the cooling medium is shunted into each cooling channel to improve the cooling efficiency.
  • the above header 2 can be made by an extrusion molding process. With this design, there is no welding seam on the header 2 and the current can be further reduced. Risk of leakage of cooling medium in tube 2.
  • the header 2 has a square structure.
  • the header 2 is composed of a top wall 21, a bottom wall 22, and two side walls 23.
  • a header 24 is provided on one of the side walls 23.
  • the extension portion 33 of the connection aid 3 can extend in both directions along the axis of the through hole 32, so that the extension portion 33 protrudes from both surfaces of the substrate 31, which is equivalent to the extension portion 33 penetrating the entire substrate 31 (not shown); the extension The portion 33 may also extend unidirectionally along the axis of the through hole 32, so that the extension portion 33 protrudes from only one surface of the substrate 31, which is equivalent to molding the extension portion 33 on one surface of the substrate 31 (see FIG. 3a). If the extension portion 33 of the connection auxiliary member 3 extends unidirectionally, the structure thereof is further simplified, and the manufacturing is simpler.
  • the extension portion 33 may be formed by extending a part of the hole wall of the through hole 32 outward.
  • the through hole 32 is circular, and the extension portion 33 is formed by extending a quarter of the hole wall of the through hole 32 outward.
  • the portion 33 has an arc-shaped plate structure.
  • the through hole 32 is rectangular.
  • the through hole 32 is composed of a top hole wall 321, a bottom hole wall 322, and two side hole walls 323.
  • the extension portion 33 is formed by a side hole of the through hole 32.
  • the wall 323 extends outward, so that the extension portion 33 has a flat plate structure.
  • the extension portion 33 may also be formed by extending all the hole walls of the through hole 32 outward. Then, the extension portion 33 has a tubular structure (see FIG. 3 a), and the end of the cooling pipe 1 is connected to the inner peripheral wall 432 of the extension portion 33.
  • connection area between the end of the cooling pipe 1 and the connection aid 3 is increased.
  • the extending portion 33 and the substrate 31 may be integrally formed by a concave-convex mold, integrally formed by a stamping process, or connected by a solid connection method such as welding.
  • the connection auxiliary member 3 is manufactured by a stamping process
  • the extending portion 33 is formed when the above-mentioned through hole 32 is stamped on the substrate 31 by a stamping process.
  • One through hole 32 or multiple through holes 32 may be provided on the substrate 31.
  • two through holes 32 are provided on each substrate 31, and each connection aid 3 is provided.
  • a pair of cooling pipes 1 can be fixedly connected; if multiple cooling pipes 1 are required to be connected in parallel to the above-mentioned header 2, a plurality of connection auxiliary members 3 can be continuously used to achieve the purpose of connecting multiple pairs of cooling pipes 1.
  • the two surfaces of the substrate 31 are a first surface 311 and a second surface 312, respectively, and the extension portion 33 is formed on the second surface On 312, a chamfered portion 34 is provided at the through hole 32 of the first surface 311, so that the port of the cooling pipe 1 is inserted into the through hole 32.
  • the extension portion 33 of the connection auxiliary member 3 may be formed to extend away from the collecting hole 24. At this time, the extending portion 33 is not inserted into the collecting hole 24. ; The extension portion 33 may also extend into the collecting hole 24 (see FIG. 2d). At this time, the extending portion 33 is inserted into the collecting hole 24 so that the connection between the connection auxiliary member 3 and the collecting tube 2 is made. More stable.
  • the cross-sectional shape of the extension portion 33 is similar to the shape of the header hole 24 Adapted, the extension portion 33 extends into the current collecting channel of the current collecting tube 2 through the current collecting hole 24, so that the connection between the connection auxiliary member 3 and the current collecting tube 2 is more stable.
  • the cross-sectional shape of the extension portion 33 and the shape of the current collecting hole 24 are elongated.
  • the outer peripheral wall 331 of the extension portion 33 is composed of a top plane 3311, a bottom plane 3312, and two curved surfaces 3313.
  • the holes of the current collecting hole 24 The edge is composed of a top edge 241, a bottom edge 242, and two side edges 243.
  • the top edge 241 and the bottom edge 242 are straight edges.
  • the hole edge of the header hole 24 is formed by the top edge 241, The bottom edge 242 and the two side edges 243 are formed.
  • the hole wall of the through hole 32 is composed of the top hole wall 321, the bottom hole wall 322, and the two side hole walls 323.
  • the extension 33 is formed by the bottom hole wall 322 extending outward.
  • the extension portion 33 abuts on the bottom edge 242 of the current collecting hole 24. In this way, the bottom edge 242 of the current collecting hole 24 can support the connection auxiliary member 3 and improve the connection strength between the connection auxiliary member 3 and the current collecting pipe 2.
  • the current collecting pipe 2 is composed of a top wall 21, a bottom wall 22, and two side walls 23, and a collecting hole 24 is provided on one of the side walls 23, and a top edge of the collecting hole 24
  • the distance D1 between 241 and the top wall 21 is greater than the distance D2 between the bottom edge 242 of the header 24 and the bottom wall 22.
  • the bottom edge 242 of the header 24 is too close to the bottom wall 22 of the header 2, a flange cannot be formed at the bottom edge 242 of the header 24 by a stamping process (the flange is used to connect the end of the cooling pipe)
  • the extension 33 of the connection auxiliary member 3 can make up for this process defect well. Therefore, the collecting hole 24 can be opened by machining, there is no need to put an opening mold in the collecting pipe 2, and the collecting hole 24 is opened near the bottom wall 22, thereby reducing the cooling pipe 1 relative to the collecting pipe. 2 layout height.
  • the bottom edge 242 of the current collecting hole 24 is aligned with the inner surface of the bottom wall 22, that is, the distance D2 is zero, so that the extension 33 of the connection auxiliary member 3 projects through the current collecting hole 24.
  • the inner surface of the bottom wall 22 that is, the bottom surface of the header channel
  • connection aid 3 and the above-mentioned header 2 and cooling pipe 1 can be connected by welding, and may be specifically:
  • the two surfaces of the substrate 31 are a first surface 311 and a second surface 312, respectively, the extension portion 33 is formed on the second surface 312, and the second surface 312 of the substrate 31 and The current collecting tube 2 is adhered and fixed, or the first surface 311 of the substrate 31 is fixedly connected with the current collecting tube 2.
  • the substrate 31 is a metal piece, and the extension portion 33 is formed when the through hole 32 is punched on the metal piece by a stamping process.
  • the metal piece includes a base material layer, and both surfaces of the base material layer are provided with a solder composite layer.
  • the base material layer is the main material of the metal sheet to ensure the structural strength of the connection auxiliary member 3 itself.
  • the substrate layer may be an aluminum sheet, and the solder composite layer provided on one surface of the aluminum sheet is a flux layer, which is used to weld the connection auxiliary member 3 and the current collecting tube 2 together, and is provided on the other surface of the aluminum sheet.
  • the solder composite layer is also a flux layer, and is used to weld the connection auxiliary member 3 and the cooling pipe 1 together.
  • the brazing material layer may be a layer of an aluminum material having a relatively low melting point.
  • the aluminum piece is formed by the punching and flanging process to form the extension portion 33.
  • the connection auxiliary member 3 is independent of the header 2
  • the connecting parts, that is, the above substrate layer can use a thicker aluminum sheet, and obtain a longer and thicker extension 33 by stamping and stretching, which increases the connection between the connection aid 3 and the cooling pipe 1.
  • the connection area increases the connection strength between the connection aid 3 and the cooling pipe 1.
  • the battery cooling module 100 includes two current collecting tubes 2, two connection auxiliary parts 3, and a plurality of cooling tubes 1.
  • the number of collecting holes 24 on each collecting tube 2 is the same as the number of cooling tubes 1.
  • the number of extensions 33 on each connection auxiliary member 3 is the same as the number of cooling tubes 1.
  • the base plate 31 is connected to the collecting tube 2.
  • a solder composite layer is provided on one surface of the surface, the hole wall of the through hole 32, and the inner peripheral wall 332 of the extension portion 33 (the extension portion is tubular).
  • connection aids 3 are respectively mounted on two current collecting tubes 2, and a surface provided with a solder composite layer on the substrate 31 is closely attached to the current collecting tubes 2; then, two The ends are inserted into the through holes 32 of the two connection aids 3, respectively, and the ends of the cooling pipe 1 are brought into close contact with the inner peripheral wall 332 of the extension 33, so that the two headers 2 connect all the cooling pipes 1 in parallel
  • the assembled battery cooling module 100 is put into the soldering furnace as a whole, and the solder formed by melting the solder composite layer is filled in the gap between the substrate 31 and the header 2 and filled in the through-hole 32 and the cooling tube 1 The gap in the end is filled in the gap in the inner peripheral wall 332 of the extension 33 and the end of the cooling pipe 1 at the same time.
  • the solder welds the cooling pipe 1, the connection auxiliary member 3, and the current collecting pipe 2 into one. overall.
  • the battery cooling assembly 100 can improve the connection strength between the cooling pipe 1 and the header 2, thereby reducing the risk of leakage of the cooling medium. Therefore, it effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请部分实施例涉及电池冷却技术领域，提供了一种电池冷却组件，包括：冷却管(1)；集流管(2)，集流管(2)上设有集流孔(24)；连接辅助件(3)，连接辅助件(3)包括基板(31)，基板(31)上设有通孔(32)，通孔(32)的孔壁向外延伸形成延伸部(33)；冷却管(1)的端部通过所述通孔(32)与所述延伸部(33)连接，基板(31)与集流管(2)连接，通孔(32)与集流孔(24)连通。采用本申请的实施例，能够提高冷却管(1)和集流管(2)之间的连接强度，从而降低冷却介质的泄露风险。

Description

电池冷却组件
交叉引用
本申请引用于2018年07月17日递交的名称为“电池冷却组件”的第201821135180.4号中国专利申请，其通过引用被全部并入本申请。
技术领域
本申请涉及电池冷却技术，特别是涉及一种电池冷却组件。
背景技术
液冷板大量应用于新能源汽车动力电池包的冷却系统中，具有重量轻、安全可靠等优点。
发明内容
本申请的一些实施例提供了一种电池冷却组件，包括：冷却管；集流管，集流管上设有集流孔；连接辅助件，连接辅助件包括基板，基板上设有通孔，通孔的孔壁向外延伸形成延伸部；冷却管的端部通过所述通孔与所述延伸部连接，基板与集流管连接，通孔与集流孔连通。
在一些实施例中，所述延伸部沿通孔轴线单向延伸。
在一些实施例中，所述延伸部伸入至集流孔内。
在一些实施例中，所述延伸部呈管状结构。
在一些实施例中，所述延伸部的横截面形状与集流孔的形状相匹配，延伸部经集流孔伸入至集流管的集流通道内。
在一些实施例中，所述集流孔的孔边缘由顶边缘、底边缘以及两个侧边缘构成，所述通孔的孔壁由顶孔壁、底孔壁以及两个侧孔壁构成，所述延伸部由所述底孔壁延伸而成，并且延伸部抵靠在集流孔的底边缘上。
在一些实施例中，所述集流管由顶壁、底壁以及两侧壁构成，所述集流孔设在其中一个侧壁上，并且集流孔的顶边缘与顶壁的距离大于集流孔的底边缘与底壁的距离。
在一些实施例中，所述集流孔的底边缘与所述底壁的内表面对齐。
在一些实施例中，所述基板的两表面分别为第一表面和第二表面，所述延伸部成型在第二表面上，第一表面的通孔处设有倒角部。
在一些实施例中，所述延伸部在采用冲压工艺在基板上冲压所述通孔时形成。
区别于现有技术，上述技术方案电池冷却组件在集流管的集流孔和冷却管的连接处设置连接辅助件，冷却管的端部通过所述通孔与所述延伸部连接，基板与集流管连接，以此来增加冷却管与集流管的连接面积，提高两者的连接强度，从而保证良好的密封性，降低冷却介质的泄露风险。
附图说明
图1a显示为现有技术中的水冷板的立体图；
图1b显示为如图1a所示水冷板的正视图；
图2a显示为电池冷却组件的爆炸图；
图2b显示为电池冷却组件的立体图；
图2c显示为电池冷却组件的剖视图；
图2d显示为图2c中A部分的放大图；
图3a显示为连接辅助件的第一立体图；
图3b显示为连接辅助件的第二立体图；
图3c显示为如图3a所示连接辅助件的侧视图；
图4a显示为电池冷却组件的剖视图；
图4b显示为图4a中B部分的放大图；
图4c显示为连接辅助件的立体图。
元件标号说明
1                      冷却管
2                      集流管
21                     顶壁
22                     底壁
23                     侧壁
24                     集流孔
3                      连接辅助件
31                     基板
311                    第一表面
312                    第二表面
32                     通孔
33                     延伸部
331                    外周壁
3311                   顶平面
3312                   底平面
3313                   侧曲面
332                    内周壁
34                     倒角部
241                    顶边缘
242                    底边缘
243                    侧边缘
321                    顶孔壁
322                    底孔壁
323                    侧孔壁
100                    电池冷却组件
具体实施方式
为详细说明技术方案的技术内容、构造特征、所实现目的及效果，以下结合具体实施例并配合附图详予说明。
发明人发现，如图1a、图1b所示，现有的液冷板由冷却管1和集流管2焊接而成，集流管2一般为方管或圆管，集流管2上开设有冷却管管口大小的焊接孔，焊接孔所用工艺为机加工。当冷却管1与集流管2进行焊接时，存在焊接面积过小、焊接不牢靠的缺点，容易造成焊接处的机械强度不足，从而导致液冷板经过振动之后的泄露风险升高。
基于此，如图2a、图2b、图2c以及图2d所示，本实施例提供一种电池冷却组件100，包括：
冷却管1：冷却管1内通冷却介质，冷却介质可以是液体，也可以是气体；冷却管1通常设置在电池系统中以带走电池热量，从而实现电池系统的冷却。
集流管2，集流管2上设有集流孔24；集流管2的集流通道具有分配、汇集冷却介质 的作用，例如，两个集流管2可以将多个冷却管1并联在一起，其中一个集流管2将冷却介质分配给所有冷却管1，所有冷却管1内的冷却介质汇集到另一个集流管2内。
具体参见图2d和图3a，连接辅助件3，连接辅助件3包括基板31，基板31上设有通孔32，通孔32的孔壁向外延伸形成延伸部33。
冷却管1的端部通过上述通孔32与上述延伸部33连接，基板31与集流管2连接，通孔32与集流孔24连通。电池冷却组件100在集流管2的集流孔24和冷却管1的连接处设置连接辅助件3，即冷却管1的端部通过通孔32与延伸部33连接，基板31与集流管2连接，通孔32与集流孔24连通；通过延伸部33使冷却管1的端部和通孔32之间的连接更加牢固，通过基板31使连接辅助件3和集流管2之间的连接更加牢固，以此增加冷却管1与集流管2的连接面积，提高两者的连接强度，从而保证良好的密封性，降低冷却介质的泄露风险。
上述冷却管1的横截面形状可以是矩形、圆形、三角形、长条形等形状。
冷却管1可以为口琴管，其具有多条相互平行的冷却通道，使冷却介质分流至每个冷却通道内，以提高冷却效率。
由于由金属板材焊接而成的集流管2存在泄露风险，上述集流管2可以通过挤出成型工艺制成，如此设计，集流管2上就不存在任何焊接缝，能够进一步降低集流管2内冷却介质的泄漏风险。
参考图2a、图2c以及图2d，集流管2呈方形结构，集流管2由顶壁21、底壁22以及两侧壁23构成，集流孔24设在其中一个侧壁23上。
上述连接辅助件3的延伸部33可以沿通孔32轴线双向延伸，使延伸部33突出于基板31的两个表面，相当于延伸部33贯穿于整个基板31(未予图示)；该延伸部33也可以沿通孔32轴线单向延伸，使延伸部33只突出于基板31的一个表面，相当于延伸部33成型在基板31的一个表面上(参见图3a)。若连接辅助件3的延伸部33单向延伸，则其结构更加简化，制造更加简单。延伸部33可以由通孔32的部分孔壁向外延伸而成，例如，通孔32呈圆形，延伸部33由通孔32的四分之一孔壁向外延伸而成，那么，延伸部33呈弧形板结构；再例如，通孔32呈长方形，通孔32由顶孔壁321、底孔壁322以及两个侧孔壁323构成，延伸部33由通孔32的一侧孔壁323向外延伸而成，那么，延伸部33呈平板结构。延伸部33也可以由通孔32的全部孔壁向外延伸而成，那么，延伸部33呈管状结构(参见图3a)，冷却管1的端部与延伸部33的内周壁432连接，这样增大了冷却管1的端部与连接辅助件3的连接面积。此外，延伸部33和基板31可以通过凹凸模具一体成型，可以通过冲压工艺一体成型，也可以通过焊接等固连方式相连而成。当采用冲压工艺制造连接辅助件3时，延伸 部33在采用冲压工艺在基板31上冲压上述通孔32时形成。
上述基板31上可以开设一个通孔32，也可以开设多个通孔32，例如，如图3a和图3b所示，每块基板31上开设有两个通孔32，每个连接辅助件3可以固定连接一对冷却管1；若需要多个冷却管1并联至上述集流管2上时，可以连续使用多个连接辅助件3，以达到连接多对冷却管1的目的。
如图3a、图3b以及图3c所示，作为上述连接辅助件3的第二实施例：上述基板31的两表面分别为第一表面311和第二表面312，延伸部33成型在第二表面312上，第一表面311的通孔32处设有倒角部34，这样便于将冷却管1的端口插设在上述通孔32内。
上述连接辅助件3与上述集流管2相互固定时，连接辅助件3的延伸部33可以朝背离集流孔24的方向延伸形成，此时，延伸部33未插设在集流孔24内；延伸部33也可以伸入至集流孔24内(参见图2d)，此时，延伸部33插设在集流孔24内，这样使连接辅助件3和集流管2之间的连接更加稳固。
如图2a和图3a所示，作为连接辅助件3的延伸部33和集流管2的集流孔24的第一种连接方式：延伸部33的横截面形状与集流孔24的形状相适配，延伸部33经集流孔24伸入至集流管2的集流通道内，这样使连接辅助件3和集流管2之间的连接更加稳固。例如，延伸部33的横截面形状与集流孔24的形状均呈长条形，延伸部33的外周壁331由顶平面3311、底平面3312以及两侧曲面3313构成，集流孔24的孔边缘由顶边缘241、底边缘242以及两个侧边缘243构成，顶边缘241和底边缘242为直边缘。
如图4a、图4b和图4c所示，作为连接辅助件3的延伸部33和集流管2的集流孔24的第二种连接方式：集流孔24的孔边缘由顶边缘241、底边缘242以及两个侧边缘243构成，通孔32的孔壁由顶孔壁321、底孔壁322以及两个侧孔壁323构成，延伸部33由底孔壁322向外延伸而成，延伸部33抵靠在集流孔24的底边缘242上，这样集流孔24的底边缘242能够支撑连接辅助件3，提高连接辅助件3和集流管2之间的连接强度。
如图2a和图2d所示，上述集流管2由顶壁21、底壁22以及两侧壁23构成，集流孔24设在其中一个侧壁23上，并且集流孔24的顶边缘241与顶壁21的距离D1大于集流孔24的底边缘242与底壁22的距离D2。虽然集流孔24的底边缘242离集流管2的底壁22太近，无法通过冲压工艺在集流孔24的底边缘242处形成翻边(翻边用于连接冷却管的端部)，但是连接辅助件3的延伸部33能够很好地弥补该工艺缺陷。因此，集流孔24可以通过机加工开设，不需要在集流管2内放入开孔模具，将集流孔24开设在靠近底壁22的位置，从而降低冷却管1相对于集流管2的布置高度。
仍旧参见图2a和图2d，上述集流孔24的底边缘242与上述底壁22的内表面对齐，即上述距离D2为零，这样连接辅助件3的延伸部33经集流孔24伸入至集流管2内，且与底壁22的内表面(即集流通道的底面)连接，以此进一步增加连接辅助件3与集流管2的连接面积，增强两者之间的连接强度。
上述连接辅助件3与上述集流管2、冷却管1之间均可通过焊接方式连接，具体可为：
如图3a、图3b、以及图3c所示，上述基板31的两表面分别为第一表面311和第二表面312，延伸部33成型在第二表面312上，基板31的第二表面312与集流管2贴合固连，或者基板31的第一表面311与集流管2贴合固连。
基板31为金属片，上述延伸部33采用冲压工艺在金属片上冲压上述通孔32时形成，金属片包括基材层，基材层的两表面均设有焊料复合层。基材层为金属片的主体材料，以保证连接辅助件3本身的结构强度。例如，基材层可以是铝片，设在铝片一表面的焊料复合层为钎焊剂层，用于将连接辅助件3和集流管2焊接在一起，设在铝片另一表面的焊料复合层也为钎焊剂层，用于将连接辅助件3和冷却管1焊接在一起。钎焊剂层可以是熔点较低的铝材料层。铝片通过冲孔翻边工艺形成延伸部33，虽然延伸部33的厚度相对于铝片的厚度减薄，影响了延伸部33本身的强度，但是，连接辅助件3是独立于集流管2的衔接零件，也就是说，上述基材层可以使用更加厚的铝片，通过冲压拉伸获得更长、更厚的延伸部33，这样增大了连接辅助件3和冷却管1之间的连接面积，增强了连接辅助件3和冷却管1之间的连接强度。
作为上述电池冷却组件100的一具体组装过程：
以上述集流管2上设有多个集流孔24，且并联多根冷却管1为例：电池冷却组件100包括两个集流管2、两个连接辅助件3、以及多根冷却管1，每个集流管2上的集流孔24数量与冷却管1数量相同，每个连接辅助件3上的延伸部33数量亦与冷却管1数量相同，基板31与集流管2相连的一表面、通孔32的孔壁以及延伸部33(延伸部呈管状)的内周壁332均设有焊料复合层。首先，将两个连接辅助件3分别安装到两个集流管2上，并且使基板31上设有焊料复合层的一表面紧贴集流管2；然后，将每根冷却管1的两端部分别插入至两个连接辅助件3的通孔32内，并且使冷却管1的端部与延伸部33的内周壁332紧贴，致使两个集流管2将所有冷却管1并联起来；最后，将组装好的电池冷却组件100整体放入钎焊炉内，由焊料复合层熔化形成的焊料填充在基板31与集流管2的缝隙中，填充在通孔32与冷却管1的端部的缝隙中，同时填充在延伸部33的内周壁332和冷却管1的端部的缝隙中，待冷却凝固后，焊料将冷却管1、连接辅助件3以及集流管2焊接成一个整体。
综上所述，电池冷却组件100能够提高冷却管1和集流管2之间的连接强度，从而降低冷却介质的泄露风险。所以，有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明原理及其功效，而非用于限制本申请。任何熟悉此技术的人士皆可在不违背本申请的原理下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本申请所揭示的技术思想下所完成的一切等效修饰或改变，仍应在本申请的保护范围之内。

Claims (10)

  1. 一种电池冷却组件，其特征在于，包括：
    冷却管(1)；
    集流管(2)，集流管(2)上设有集流孔(24)；
    连接辅助件(3)，连接辅助件(3)包括基板(31)，基板(31)上设有通孔(32)，通孔(32)的孔壁向外延伸形成延伸部(33)；
    冷却管(1)的端部通过所述通孔(32)与所述延伸部(33)连接，基板(31)与集流管(2)连接，通孔(32)与集流孔(24)连通。
  2. 根据权利要求1所述的电池冷却组件，其特征在于：所述延伸部(33)沿通孔(32)轴线单向延伸。
  3. 根据权利要求1至2任一项所述的电池冷却组件，其特征在于：所述延伸部(33)伸入至集流孔(24)内。
  4. 根据权利要求1至3任一项所述的电池冷却组件，其特征在于：所述延伸部(33)呈管状结构。
  5. 根据权利要求1至4任一项所述的电池冷却组件，其特征在于：所述延伸部(33)的横截面形状与集流孔(24)的形状相匹配，延伸部(33)经集流孔(24)伸入至集流管(2)的集流通道内。
  6. 根据权利要求1至4任一项所述的电池冷却组件，其特征在于：所述集流孔(24)的孔边缘由顶边缘(241)、底边缘(242)以及两个侧边缘(243)构成，所述通孔(32)的孔壁由顶孔壁(321)、底孔壁(322)以及两个侧孔壁(323)构成，所述延伸部(33)由所述底孔壁(322)延伸而成，并且延伸部(33)抵靠在集流孔(24)的底边缘(242)上。
  7. 根据权利要求6所述的电池冷却组件，其特征在于：所述集流管(2)由顶壁(21)、底壁(22)以及两侧壁(23)构成，所述集流孔(24)设在其中一个侧壁(23)上，并且集流孔(24)的顶边缘(241)与顶壁(21)的距离大于集流孔(24)的底边缘(242)与底壁(22)的距离。
  8. 根据权利要求7所述的电池冷却组件，其特征在于：所述集流孔(24)的底边缘(242)与所述底壁(22)的内表面对齐。
  9. 根据权利要求1至8任一项所述的电池冷却组件，其特征在于：所述基板(31)的两表面分别为第一表面(311)和第二表面(312)，所述延伸部(33)成型在第二表面(312)上，第一表面(311)的通孔处设有倒角部(34)。
  10. 根据权利要求1至5任一项所述的电池冷却组件，其特征在于：所述延伸部(33)在采用冲压工艺在基板(31)上冲压所述通孔(32)时形成。
PCT/CN2019/090514 2018-07-17 2019-06-10 电池冷却组件 WO2020015474A1 (zh)

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