WO2022188879A1 - 一种散热结构 - Google Patents

一种散热结构 Download PDF

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Publication number
WO2022188879A1
WO2022188879A1 PCT/CN2022/080448 CN2022080448W WO2022188879A1 WO 2022188879 A1 WO2022188879 A1 WO 2022188879A1 CN 2022080448 W CN2022080448 W CN 2022080448W WO 2022188879 A1 WO2022188879 A1 WO 2022188879A1
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WO
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Prior art keywords
water pipe
heat dissipation
hole
groove
accommodating groove
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PCT/CN2022/080448
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English (en)
French (fr)
Inventor
董天源
金英
白玉峰
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上海法雷奥汽车电器系统有限公司
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Priority claimed from CN202120556467.XU external-priority patent/CN214381994U/zh
Priority claimed from CN202110272420.5A external-priority patent/CN113015418B/zh
Application filed by 上海法雷奥汽车电器系统有限公司 filed Critical 上海法雷奥汽车电器系统有限公司
Publication of WO2022188879A1 publication Critical patent/WO2022188879A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the invention relates to the technical field of heat dissipation of power modules, in particular to a heat dissipation structure.
  • the existing water pipe and the heat dissipation plate are generally bonded with thermally conductive adhesive to transfer the heat of the heat dissipation plate from the thermally conductive adhesive to the water pipe.
  • the thermally conductive adhesive has been subjected to vibration and high temperature environment for a long time, and there is a risk of falling off and failure, not only can not guarantee the water pipe
  • the stable assembly with the cooling plate causes the water pipes to fall off, and also reduces the heat transfer efficiency, making the water cooling effect unsatisfactory.
  • a heat dissipation structure includes:
  • the water pipe is interference fit in the accommodating groove, and at least part of the outer wall of the water pipe is fitted with the groove wall of the accommodating groove.
  • the accommodating groove is a strip-shaped structure, and the water inlet and the water outlet of the water pipe are respectively drawn from two free ends of the accommodating groove.
  • a chamfer is set between the groove wall of the transition groove and the adjacent groove wall of the sub-groove, and the angle of the chamfer is greater than 90 degrees.
  • the water pipe joint is provided with a second through hole, and the second through hole and the first through hole are coaxially disposed and communicated with each other.
  • a guide slope is provided on the hole wall of one end of the second through hole connected to the first through hole.
  • At least two bosses are provided on the outer circumferential surfaces of the water inlet and the water outlet of the water pipe, and two adjacent bosses are arranged at intervals along the axis direction of the water pipe to form
  • the sealing groove is provided with a sealing member, and the sealing member is used for sealing the annular gap between the water pipe and the water pipe joint.
  • a limit step is provided on the hole wall of the second through hole, and the limit step limits the extending length of the water pipe by abutting with the boss.
  • the invention can not only ensure the stable connection between the water pipe and the radiating plate, avoid the falling off of the water pipe, but also realize the connection between the outer wall of the water pipe and the accommodating groove.
  • the groove walls are as close as possible, and the heat of the heat dissipation plate is directly transferred to the cooling liquid through the outer wall of the water pipe, which does not need to be indirectly realized by using thermal conductive glue, which improves the heat dissipation efficiency.
  • FIG. 1 is a schematic structural diagram of a heat dissipation structure in a first viewing angle according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a heat dissipation structure in a second viewing angle according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a water pipe in an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of the heat dissipation structure in the embodiment of the present invention after the water pipes are removed;
  • Fig. 5 is the partial enlarged schematic diagram of A place in Fig. 4;
  • FIG. 6 is a cross-sectional view of B-B in FIG. 2 .
  • a first feature "on” or “under” a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the heat dissipation structure includes a heat dissipation plate 10 and a water pipe 20.
  • the heat dissipation plate 10 has a first side and a second side arranged along the thickness direction.
  • a receiving groove 11 is provided on the second side of the plate 10 ;
  • the heat dissipation structure provided in this embodiment can not only ensure the stable connection between the water pipe 20 and the heat dissipation plate 10, but also prevent the water pipe 20 from falling off by interfering with the water pipe 20 in the accommodating groove 11 without using thermal adhesive for bonding. , it can also realize that the outer wall of the water pipe 20 and the groove wall of the accommodating groove 11 are as close as possible, and the heat of the heat dissipation plate 10 is directly transferred to the cooling liquid through the outer wall of the water pipe 20, without the use of thermal conductive glue.
  • the cross-section of the water pipe 20 is a circular structure, and the cross-section of the accommodating groove 11 is an arc structure; further, the inner diameter of the accommodating groove 11 is larger than the outer diameter of the water pipe 20, and the cross-section of the accommodating groove 11 is a superior arc structure , and make the width of the opening of the accommodating groove 11 smaller than the outer diameter of the water pipe 20; when pressing, the water pipe 20 needs to be squeezed into the accommodating groove 11 from the small-sized opening of the accommodating groove 11 by means of the pressing force, so as to realize both Then continue to squeeze the water pipe 20 to deform it and finally fit with the groove wall of the accommodating groove 11, so as to increase the contact area as much as possible and improve the heat dissipation effect.
  • the water pipes 20 and the heat dissipation plate 10 are made of metal materials with better thermal conductivity, which can not only improve the overall strength of the heat dissipation structure, but also ensure sufficient heat dissipation.
  • the accommodating groove 11 is a strip-shaped structure, and the water pipe 20 conforms to the accommodating groove 11 , which is also a strip-shaped structure.
  • the water pipes need to extend to each power module, that is, the water pipes 20 and the water pipes 20.
  • the grooves 11 all need to be bent adaptively.
  • the accommodating slot 11 includes a plurality of sub-slots 111 arranged in sequence along the extending direction, and two adjacent sub-slots 111 are arranged at an angle; in this embodiment, refer to FIG. 2 and FIG. 4.
  • the included angle ⁇ between the two adjacent sub-slots 111 is an obtuse angle, so as to avoid stress concentration caused by an excessively large bending angle.
  • a transition groove 112 is provided between the two adjacent sub-grooves 111, and the width of the opening of the transition groove 112 is larger than the outer diameter of the water pipe 20 placed here; For straight sections, the controllability is poor, and the thickness of the wall itself will be reduced at the bending point, which is prone to stress concentration. Therefore, the width of the opening of the transition groove 112 is set to be larger than the outer diameter of the water pipe 20 to avoid the water pipe during press-fitting.
  • the size of the accommodating groove 11 is selected to be improved, so that the width of the opening of the transition groove 112 is larger than the inner diameter of the adjacent sub-groove 111, leaving enough space for the water pipe 20 here to avoid the occurrence of Excessive squeezing of the water pipe 20.
  • a chamfer C is set between the groove wall of the transition groove 112 and the groove wall of the adjacent sub-grooves 111 , and the angle of the chamfer C is greater than 90 degrees to avoid as much as possible. Produces sharp transition edges.
  • the angle of the chamfer C may be 100 degrees, 125 degrees or 160 degrees. Further, a smooth transition is formed between the groove wall of the transition groove 112 and the groove wall of the sub-groove 111 to further avoid stress concentration with the water pipe 20 .
  • both free ends of the accommodating tank 11 are provided with mounting seats 12, and the mounting seats 12 are provided with water pipe joints 30, and the water inlet and the water outlet of the water pipe 20 are communicated with the outside world through the water pipe joints 30, Realize the circulation of coolant.
  • the water pipe joint 30 is provided on the first side of the heat dissipation plate 10; specifically, optionally, the mounting seat 12 is a convex structure protruding from the first side of the heat dissipation plate 10, and the water pipe joint 30 is installed on the free side of the convex structure. end.
  • the water pipe joint 30 is fixed on the mounting seat 12 by a fastener; in this embodiment, the fastener is a screw.
  • a first through hole 121 is formed on the mounting seat 12 along the thickness direction of the heat dissipation plate 10 .
  • the first through hole 121 is designed to be similar to a tapered structure, so that the water pipe 20 has a larger space for movement at the free end of the accommodating groove 11 to avoid jamming.
  • the penetration in 121 plays a better guiding role and avoids positional deviation of the water pipe 20 . Further, referring to FIG. 4 , the accommodating groove 11 and the first through hole 121 have a smooth transition, which further ensures that the water pipe 20 enters the mounting seat 12 smoothly.
  • the first through hole 121 may be a smooth tapered structure, that is, the diameter of the first through hole 121 gradually decreases along the direction away from the second side of the heat dissipation plate 10 until it reaches the minimum at the free end of the mounting seat 12 .
  • the first through hole 121 includes a first subsection 1211 and a second subsection 1212 connected in sequence, wherein the first subsection 1211 is closer to the heat dissipation plate than the second subsection 1212
  • the first subsection 1211 is a smooth conical structure; while the second subsection 1212 is a cylindrical structure, that is, the aperture of the second subsection 1212 remains the same, and is equal to or slightly larger than the water pipe 20 here.
  • the general guide of the water pipe 20 can be realized through the first sub-section 1211, and then the water pipe 20 can be limited as much as possible through the second sub-section 1212, so as to ensure that the axis of the water pipe 20 and the first through hole 121 is completely limited.
  • the second subsection 1212 should have a certain draft taper, but this taper is often small and does not affect the entire second subsection 1212.
  • the subsection 1212 is sufficient to limit the position of the water pipe 20 .
  • the water pipe joint 30 is provided with a second through hole 31 , and the second through hole 31 and the first through hole 121 are coaxially arranged and communicated with each other, so as to facilitate the flow of cooling liquid into the water pipe 20 from the water pipe joint 30 or It flows out from the water pipe 20 to the water pipe joint 30 .
  • the diameter of the second through hole 31 is slightly larger than the outer diameter of the water pipe 20 to ensure that the water pipe 20 can be smoothly inserted into the water pipe joint 30 .
  • the diameter of the second through hole 31 at the connection between the first through hole 121 and the second through hole 31 is larger than the outer diameter of the water pipe 20 , that is, the hole at one end of the second through hole 31 and the first through hole 121 is connected
  • a guide slope is provided on the wall, so that when the water pipe joint 30 is subsequently assembled, the water pipe 20 can be quickly assembled with the water pipe joint 30 through the guide slope and inserted into the water pipe joint 30 smoothly without jamming at the junction.
  • the sealing groove 22 may also be formed directly on the outer wall of the water pipe 20 by mechanical cutting.
  • the sealing groove 22 is formed by a rolling groove process, that is, a rotating roller is used to roll on the water pipe 20 to roll out at least two bosses 21, and a sealing groove 22 is naturally formed between the two bosses 21. This not only simplifies the forming process of the sealing groove 22, but also avoids stress concentration caused by mechanical cutting.
  • a limit step 32 is also provided on the hole wall of the second through hole 31 , and the limit step 32 restricts the water pipe 20 from extending into the water pipe joint 30 through abutment with the boss 21 on the water pipe 20 . , that is, the installation and positioning of the water pipe 20 and the water pipe joint 30 is realized.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

提供了一种散热结构，属于功率模块散热技术领域。散热结构包括：散热板（10），散热板（10）具有沿厚度方向设置的第一侧和第二侧，散热板（10）的第一侧用于与待散热件贴合，散热板（10）的第二侧设置有容置槽（11）；水管（20），过盈配合于容置槽（11）内，水管（20）的至少部分外壁与容置槽（11）的槽壁相贴合。通过将水管过盈配合于容置槽内，无需采用导热胶进行粘接，不仅能够保证水管与散热板之间的稳固连接，避免水管的脱落，还能够实现水管外壁与容置槽的槽壁尽可能的贴合，提高了散热效率。

Description

一种散热结构 技术领域
本发明涉及功率模块散热技术领域，尤其涉及一种散热结构。
背景技术
IBSG(Integrated Belt Starter Generator，集成带式起动发电机)是一种将电机和集成控制器高度集成的电机系统总成，具备启停、发电、助力等功能。集成控制器上的功率模块往往会产生大量的热，如果这些热量不能及时散发出去，会显著影响控制器正常工作。现有技术中控制器常采用水冷散热，即设置散热板与功率模块相贴合，散热板上设有水管，水管中的水流动，以不断地吸收并带走散热板的热量，实现功率模块的散热。
但是现有的水管与散热板之间一般采用导热胶粘接，以将散热板的热量由导热胶传递至水管，导热胶长期经受振动及高温环境，会有脱落和失效风险，不仅无法保证水管与散热板之间的稳定装配，造成水管的脱落，还降低了热量传递效率，使得水冷效果不能满足需求。
发明内容
本发明的目的在于提供一种水管与散热板能够稳定装配、且散热效率高的散热结构。
为实现上述目的，提供以下技术方案：
一种散热结构，包括：
散热板，所述散热板具有沿厚度方向设置的第一侧和第二侧，所述散热板的所述第一侧用于与待散热件贴合，所述散热板的所述第二侧设置有容置槽；
水管，过盈配合于所述容置槽内，所述水管的至少部分外壁与所述容置槽 的槽壁相贴合。
可选地，所述容置槽为条状结构，所述水管的进水口和出水口分别由所述容置槽的两自由端引出。
可选地，所述容置槽包括沿延伸方向依次设置的多个分槽，相邻的两个所述分槽呈夹角设置；
相邻的两个所述分槽之间设置过渡槽，所述过渡槽开口处的宽度大于置于此处的所述水管的外径。
可选地，所述过渡槽的槽壁与相邻的所述分槽的槽壁之间设置倒角，所述倒角的角度大于90度。
可选地，所述容置槽的两自由端处均设置有安装座，所述安装座上设置有水管接头，所述水管的进水口和出水口均通过所述水管接头与外界连通。
可选地，所述水管接头设于所述散热板的所述第一侧，所述安装座沿所述散热板的厚度方向开设有第一通孔，所述水管穿过所述第一通孔后伸入所述水管接头内；所述第一通孔的孔径沿着远离所述散热板的所述第二侧的方向逐渐减小。
可选地，所述水管接头开设有第二通孔，所述第二通孔与所述第一通孔同轴设置且相互连通。
可选地，所述第二通孔与所述第一通孔连接的一端的孔壁上设置有导向斜面。
可选地，所述水管的进水口和出水口处的外圆周面上均设置有至少两个凸台，相邻的两个所述凸台沿着所述水管的轴线方向间隔设置，以形成密封槽，所述密封槽内设置密封件，所述密封件用于密封所述水管与所述水管接头之间 的环向间隙。
可选地，所述第二通孔的孔壁上设置限位台阶，所述限位台阶通过与所述凸台的抵接限制所述水管的伸入长度。
与现有技术相比，本发明的有益效果：
本发明通过将水管过盈配合于容置槽内，无需采用导热胶进行粘接，不仅能够保证水管与散热板之间的稳固连接，避免水管的脱落，还能够实现水管外壁与容置槽的槽壁尽可能的贴合，散热板的热量直接通过水管外壁传递至冷却液中，无需采用导热胶间接实现，提高了散热效率。
附图说明
图1为本发明实施例中一种散热结构在第一视角下的结构示意图；
图2为本发明实施例中一种散热结构在第二视角下的结构示意图；
图3为本发明实施例中水管的结构示意图；
图4为本发明实施例中散热结构去除水管后的结构示意图；
图5为图4中A处的局部放大示意图；
图6为图2中B-B的剖视图。
附图标记：
10、散热板；11、容置槽；111、分槽；112、过渡槽；12、安装座；121、第一通孔；1211、第一分部；1212、第二分部；
20、水管；21、凸台；22、密封槽；
30、水管接头；31、第二通孔；32、限位台阶；
40、密封件。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本发明的描述中，需要说明的是，术语“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本发明和简化描述，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发明的限制。此外，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本发明的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接。对于本领域的普通技 术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
在本发明中，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。
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
本实施例在于提供一种散热结构，主要用于集成控制器的功率模块的散热，但并不局限于用于集成控制器的散热，也可以用于其他的需要散热的装置中。参考图1-4，散热结构包括散热板10和水管20，散热板10具有沿厚度方向设置的第一侧和第二侧，散热板10的第一侧用于与待散热件贴合，散热板10的第二侧设置有容置槽11；水管20过盈配合于容置槽11内，且水管20的至少部分外壁与容置槽11的槽壁相贴合。本实施例所提供的散热结构通过将水管20过盈配合于容置槽11内，无需采用导热胶进行粘接，不仅能够保证水管20与散热板10之间的稳固连接，避免水管20的脱落，还能够实现水管20外壁与容置槽11的槽壁尽可能的贴合，散热板10的热量直接通过水管20外壁传递至冷却液中，无需采用导热胶间接实现，提高了散热效率。
具体实施时，水管20的截面为圆形结构，容置槽11的截面为弧形结构；进一步地，容置槽11的内径大于水管20的外径，容置槽11的截面为优弧结构，且使容置槽11开口处的宽度小于水管20的外径；压装时，水管20需要依靠挤压力由容置槽11的小尺寸开口处挤入容置槽11内，实现二者的过盈配合，然后继续挤压水管20，使其变形并最终与容置槽11的槽壁相贴合，尽可能增大接触面积，提升散热效果。本实施例中，水管20及散热板10均采用导热性能较佳的金属材料制成，既能提高散热结构的整体强度，还能保证热量的充分散发。
进一步地，容置槽11为条状结构，水管20随形于容置槽11，也为条状结构，且水管20嵌入容置槽11后，其进水口和出水口分别由容置槽11的两自由端引出。具体实施时，由于控制器上的功率模块通常设置多个且设置位置不同，为了保证每个功率模块都得到充分散热，水管需要延伸到各个功率模块处，即水管20和容纳水管20的容置槽11均需要适应性地弯折。具体地，参考图4和图5，容置槽11包括沿延伸方向依次设置的多个分槽111，相邻的两个分槽111呈夹角设置；本实施例中，参考图2和图4，相邻的两个分槽111之间的夹角β均为钝角，以避免弯折角度过大造成应力集中。进一步地，相邻的两个分槽111之间设置有过渡槽112，过渡槽112开口处的宽度大于置于此处的水管20的外径；由于水管20制造时弯折处的形状相对于直线段来说可控性差，且在弯折处本身壁厚会减薄，进而容易发生应力集中，因此将过渡槽112开口处的宽度设置的比水管20的外径大，避免压装时水管20与容置槽11的槽壁在弯折处发生过度挤压，使水管20的弯折处受到较大的外力发生破裂；具体实施时，为方便生产，水管20的外径一般都保持一致，因此，本实施例中选择将容置槽 11的尺寸进行改进，使得过渡槽112开口处的宽度大于相邻的分槽111的内径，给此处的水管20留有足够的空隙，避免发生水管20的过度挤压。
进一步地，由于过渡槽112与分槽111的尺寸不一致，容置槽11的成型通常采用机械切割，因此在容置槽11的弯折处会形成锋利的台阶，压装水管20时极易造成局部应力集中，发生切割水管20并造成水管20泄漏的现象。因此，本实施例中，参考图5，在过渡槽112的槽壁与相邻的分槽111的槽壁之间设置倒角C，且倒角C的角度大于90度，以尽可能地避免产生锋利的过渡边缘。具体地，倒角C的角度可以为100度、125度或者160度。进一步地，过渡槽112的槽壁与分槽111的槽壁之间圆滑过渡，以进一步避免与水管20之间发生应力集中现象。
参考图1和图6，容置槽11的两自由端处均设置有安装座12，安装座12上设置有水管接头30，水管20的进水口和出水口均通过水管接头30与外界连通，实现冷却液的流通。具体地，水管接头30设于散热板10的第一侧；具体可选地，安装座12为凸设于散热板10的第一侧的凸起结构，水管接头30安装于凸起结构的自由端。可选地，水管接头30通过紧固件固定在安装座12上；本实施例中，紧固件为螺钉。进一步地，参考图6，安装座12上沿散热板10的厚度方向开设有第一通孔121，水管20压入容置槽11的同时，水管20的自由端穿过第一通孔121，并由第一通孔121伸出，方便后续与水管接头30的装配；进一步地，第一通孔121的孔径沿着远离散热板10的第二侧的方向逐渐减小。由于水管20采用金属等硬度较高的材料制造，对于本实施例中这种需要弯折多次的异形管件来说，其进水口和出水口处的公差并不能达到很小，为避免过盈压装时，水管20在容置槽11的自由端发生卡死现象，导致装配失败或损 坏压装设备，需要在压装时保证水管20的进水口和出水口定位的准确。将第一通孔121设计为类似锥形的结构，使得水管20在容置槽11的自由端具有较大的活动空间，避免卡死，同时锥形结构还能对水管20在第一通孔121内的穿设起到更好地导向作用，避免水管20发生位置偏移。进一步地，参考图4，容置槽11与第一通孔121圆滑过渡，进一步保证水管20顺利进入安装座12内。
一种实施方式中，第一通孔121可以是光滑的锥形结构，即其孔径沿着远离散热板10的第二侧的方向逐渐减小，直至在安装座12的自由端达到最小。在其他的实施例中，参考图6，第一通孔121包括依次连接的第一分部1211和第二分部1212，其中，第一分部1211相对于第二分部1212更加靠近散热板10的第二侧，第一分部1211为圆滑的锥形结构；而第二分部1212为圆柱形结构，即第二分部1212的孔径保持一致，且等于或略大于水管20在此处的外径，这样设置能够先通过第一分部1211实现水管20的大致导向，再通过第二分部1212实现水管20尽可能充分的限位，保证水管20与第一通孔121轴线的尽可能地重合；当然具体实施时，为了方便第二分部1212成型过程中的拔模操作，第二分部1212应当具有一定的拔模锥度，但这个锥度往往较小，并不影响整个第二分部1212对水管20的充分限位。
仍然参考图6，进一步地，水管接头30开设有第二通孔31，第二通孔31与第一通孔121同轴设置且相互连通，以方便冷却液由水管接头30流入水管20内或由水管20流出至水管接头30。第二通孔31的孔径略大于水管20的外径，能保证水管20能顺利套入水管接头30内即可。进一步地，第二通孔31在第一通孔121与第二通孔31连接处的孔径要更加大于水管20的外径，即第二通孔31与第一通孔121连接的一端的孔壁上设置有导向斜面，目的是在后续装 配水管接头30时，水管20能够通过导向斜面与水管接头30快速装配，顺利插入水管接头30，而不会在交界处发生卡顿。
具体地，参考图3和图6，水管20的进水口和出水口处的外圆周面上均设置有至少两个凸台21，相邻的两个凸台21沿着水管20的轴线方向间隔设置，以形成密封槽22，密封槽22内设置密封件40，密封件40被限位于两个凸台21之间不能随意移动，保证了密封件40位置的稳定性；密封件40被挤压在水管20的外壁与水管接头30的内壁之间，用于密封水管20与水管接头30之间的环向间隙。具体实施时，也可以直接在水管20外壁上采用机械切割的方式来开设密封槽22。本实施例中，密封槽22采用滚槽工艺成型，即利用旋转的滚轮在水管20上滚压，滚出至少两个凸台21，两个凸台21之间自然形成了一个密封槽22，既简化了密封槽22的成型工艺，还能避免机械切割造成的应力集中。进一步地，如图6所示，在第二通孔31的孔壁上还设置限位台阶32，限位台阶32通过与水管20上的凸台21的抵接限制水管20伸入水管接头30的长度，即实现水管20与水管接头30的安装定位。
注意，上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。

Claims (10)

  1. 一种散热结构，其特征在于，包括：
    散热板(10)，所述散热板(10)具有沿厚度方向设置的第一侧和第二侧，所述散热板(10)的所述第一侧用于与待散热件贴合，所述散热板(10)的所述第二侧设置有容置槽(11)；
    水管(20)，过盈配合于所述容置槽(11)内，所述水管(20)的至少部分外壁与所述容置槽(11)的槽壁相贴合。
  2. 根据权利要求1所述的散热结构，其特征在于，所述容置槽(11)为条状结构，所述水管(20)的进水口和出水口分别由所述容置槽(11)的两自由端引出。
  3. 根据权利要求2所述的散热结构，其特征在于，所述容置槽(11)包括沿延伸方向依次设置的多个分槽(111)，相邻的两个所述分槽(111)呈夹角设置；
    相邻的两个所述分槽(111)之间设置过渡槽(112)，所述过渡槽(112)开口处的宽度大于置于此处的所述水管(20)的外径。
  4. 根据权利要求3所述的散热结构，其特征在于，所述过渡槽(112)的槽壁与相邻的所述分槽(111)的槽壁之间设置倒角，所述倒角的角度大于90度。
  5. 根据权利要求2所述的散热结构，其特征在于，所述容置槽(11)的两自由端处均设置有安装座(12)，所述安装座(12)上设置有水管接头(30)，所述水管(20)的进水口和出水口均通过所述水管接头(30)与外界连通。
  6. 根据权利要求5所述的散热结构，其特征在于，所述水管接头(30)设于所述散热板(10)的所述第一侧，所述安装座(12)沿所述散热板(10)的厚度方向开设有第一通孔(121)，所述水管(20)穿过所述第一通孔(121)后 伸入所述水管接头(30)内；所述第一通孔(121)的孔径沿着远离所述散热板(10)的所述第二侧的方向逐渐减小。
  7. 根据权利要求6所述的散热结构，其特征在于，所述水管接头(30)开设有第二通孔(31)，所述第二通孔(31)与所述第一通孔(121)同轴设置且相互连通。
  8. 根据权利要求7所述的散热结构，其特征在于，所述第二通孔(31)与所述第一通孔(121)连接的一端的孔壁上设置有导向斜面。
  9. 根据权利要求7所述的散热结构，其特征在于，所述水管(20)的进水口和出水口处的外圆周面上均设置有至少两个凸台(21)，相邻的两个所述凸台(21)沿着所述水管(20)的轴线方向间隔设置，以形成密封槽(22)，所述密封槽(22)内设置密封件(40)，所述密封件(40)用于密封所述水管(20)与所述水管接头(30)之间的环向间隙。
  10. 根据权利要求9所述的散热结构，其特征在于，所述第二通孔(31)的孔壁上设置限位台阶(32)，所述限位台阶(32)通过与所述凸台(21)的抵接限制所述水管(20)的伸入长度。
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CN211509705U (zh) * 2020-04-29 2020-09-15 四川华力电子有限公司 一种新型的散热板
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CN106455430A (zh) * 2016-09-30 2017-02-22 广东顺德三扬科技股份有限公司 一种散热装置及其制造方法
CN211509705U (zh) * 2020-04-29 2020-09-15 四川华力电子有限公司 一种新型的散热板
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