CN214381994U

CN214381994U - Heat radiation structure

Info

Publication number: CN214381994U
Application number: CN202120556467.XU
Authority: CN
Inventors: 董天源; 金英; 白玉峰
Original assignee: Shanghai Valeo Automotive Electrical Systems Co Ltd
Current assignee: Shanghai Valeo Automotive Electrical Systems Co Ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-10-08
Anticipated expiration: 2031-03-12

Abstract

The utility model discloses a heat radiation structure belongs to power module heat dissipation technical field. The heat dissipation structure includes: the heat dissipation plate is provided with a first side and a second side which are arranged along the thickness direction, the first side of the heat dissipation plate is used for being attached to a heat dissipation piece to be dissipated, and the second side of the heat dissipation plate is provided with an accommodating groove; the water pipe is in interference fit in the accommodating groove, and at least part of the outer wall of the water pipe is attached to the wall of the accommodating groove. The utility model discloses a with water pipe interference fit in the storage tank, need not to adopt the heat conduction glue to bond, not only can guarantee the firm connection between water pipe and the heating panel, avoid droing of water pipe, can also realize the cell wall laminating as far as of water pipe outer wall and storage tank, improved the radiating efficiency.

Description

Heat radiation structure

Technical Field

The utility model relates to a power module heat dissipation technical field especially relates to a heat radiation structure.

Background

An Integrated Starter Generator (IBSG) is a motor system assembly that highly integrates a motor and an Integrated controller, and has functions of start-stop, power generation, power assistance, and the like. The power modules on the integrated controller often generate a large amount of heat, which can significantly affect the normal operation of the controller if the heat cannot be dissipated in time. In the prior art, the controller usually adopts water-cooling heat dissipation, namely, a heat dissipation plate is arranged to be attached to the power module, a water pipe is arranged on the heat dissipation plate, and water in the water pipe flows to continuously absorb and take away heat of the heat dissipation plate, so that heat dissipation of the power module is realized.

But generally adopt the heat conduction glue to bond between current water pipe and the heating panel to transmit the heat of heating panel to the water pipe by heat conduction glue, the heat conduction glue stands vibration and high temperature environment for a long time, has and drops and the inefficacy risk, not only can't guarantee the stable assembly between water pipe and the heating panel, causes dropping of water pipe, has still reduced heat transfer efficiency, makes the water-cooling effect can not satisfy the demand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water pipe and heating panel can stable assembly, and the heat radiation structure that the radiating efficiency is high.

In order to realize the purpose, the following technical scheme is provided:

a heat dissipation structure, comprising:

the heat dissipation plate is provided with a first side and a second side which are arranged along the thickness direction, the first side of the heat dissipation plate is used for being attached to a heat dissipation piece to be dissipated, and the second side of the heat dissipation plate is provided with an accommodating groove;

the water pipe is in interference fit in the accommodating groove, and at least part of the outer wall of the water pipe is attached to the wall of the accommodating groove.

Optionally, the accommodating groove is of a strip structure, and the water inlet and the water outlet of the water pipe are respectively led out from two free ends of the accommodating groove.

Optionally, the accommodating groove comprises a plurality of sub-grooves sequentially arranged along the extending direction, and two adjacent sub-grooves are arranged at an included angle;

a transition groove is arranged between two adjacent branched grooves, and the width of the opening of the transition groove is larger than the outer diameter of the water pipe arranged at the position.

Optionally, a chamfer is arranged between a groove wall of the transition groove and a groove wall of the adjacent sub-groove, and the angle of the chamfer is greater than 90 degrees.

Optionally, the two free ends of the accommodating groove are provided with mounting seats, the mounting seats are provided with water pipe connectors, and the water inlets and the water outlets of the water pipes are communicated with the outside through the water pipe connectors.

Optionally, the water pipe joint is arranged on the first side of the heat dissipation plate, the mounting seat is provided with a first through hole along the thickness direction of the heat dissipation plate, and the water pipe penetrates through the first through hole and then extends into the water pipe joint; the aperture of the first through hole is gradually reduced along a direction away from the second side of the heat dissipation plate.

Optionally, the water pipe joint is provided with a second through hole, and the second through hole is coaxial with the first through hole and is communicated with the first through hole.

Optionally, a guide inclined plane is arranged on a hole wall of one end of the second through hole, which is connected with the first through hole.

Optionally, all be provided with two at least bosss on the outer periphery of water inlet and the delivery port department of water pipe, adjacent two the boss is along the axis direction interval of water pipe sets up to form the seal groove, set up the sealing member in the seal groove, the sealing member be used for sealing the water pipe with the hoop clearance between the water pipe head.

Optionally, a limiting step is arranged on the hole wall of the second through hole, and the limiting step limits the extending length of the water pipe through the abutting joint with the boss.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a with water pipe interference fit in the storage tank, need not to adopt the heat conduction glue to bond, not only can guarantee the firm connection between water pipe and the heating panel, avoid droing of water pipe, can also realize the cell wall laminating as far as of water pipe outer wall and storage tank, the heat of heating panel directly leads to pipe outer wall transmission to the coolant liquid in, need not to adopt the heat conduction glue to realize indirectly, has improved the radiating efficiency.

Drawings

Fig. 1 is a schematic structural view of a heat dissipation structure in an embodiment of the present invention at a first viewing angle;

fig. 2 is a schematic structural view of a heat dissipation structure in an embodiment of the present invention at a second viewing angle;

FIG. 3 is a schematic structural view of a water pipe according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the embodiment of the present invention after the water pipe is removed from the heat dissipation structure;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 is a cross-sectional view of B-B in fig. 2.

Reference numerals:

10. a heat dissipation plate; 11. a containing groove; 111. dividing the groove; 112. a transition groove; 12. a mounting seat; 121. a first through hole; 1211. a first section; 1212. a second subsection;

20. a water pipe; 21. a boss; 22. a sealing groove;

30. a water pipe joint; 31. a second through hole; 32. a limiting step;

40. and a seal.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The present invention provides a heat dissipation structure, which is mainly used for heat dissipation of a power module of an integrated controller, but is not limited to heat dissipation of the integrated controller, and can also be used in other devices requiring heat dissipation. Referring to fig. 1 to 4, 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 a thickness direction, the first side of the heat dissipation plate 10 is used for being attached to a heat dissipation member to be dissipated, and the second side of the heat dissipation plate 10 is provided with an accommodation groove 11; the water pipe 20 is in interference fit with the accommodating groove 11, and at least part of the outer wall of the water pipe 20 is attached to the wall of the accommodating groove 11. The heat radiation structure that this embodiment provided is through with water pipe 20 interference fit in storage tank 11, need not to adopt heat conduction glue to bond, not only can guarantee the firm connection between water pipe 20 and the heating panel 10, avoid droing of water pipe 20, can also realize that the cell wall of water pipe 20 outer wall and storage tank 11 is laminated as far as, the heat of heating panel 10 directly passes through in water pipe 20 outer wall transmits to the coolant liquid, need not to adopt heat conduction glue indirect realization, the radiating efficiency has been improved.

In specific implementation, 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, the cross section of the accommodating groove 11 is of a major arc structure, and the width of the opening of the accommodating groove 11 is smaller than the outer diameter of the water pipe 20; during the pressure equipment, water pipe 20 need rely on the extrusion force to be squeezed into storage tank 11 by the small-size opening part of storage tank 11 in, realize the interference fit of the two, then continue to extrude water pipe 20, make it warp and finally laminate mutually with the cell wall of storage tank 11, increase area of contact as far as possible, promote the radiating effect. In this embodiment, the water pipe 20 and the heat dissipation plate 10 are made of metal materials with better heat conductivity, which can not only improve the overall strength of the heat dissipation structure, but also ensure sufficient heat dissipation.

Further, the accommodating groove 11 is a strip-shaped structure, the water pipe 20 is formed along the accommodating groove 11, and the water inlet and the water outlet of the water pipe 20 are respectively led out from two free ends of the accommodating groove 11 after the water pipe is embedded into the accommodating groove 11. During the concrete implementation, because the power module on the controller sets up a plurality ofly usually and sets up the position difference, in order to guarantee that every power module all obtains fully dispelling the heat, the water pipe need extend to each power module department, and water pipe 20 and the storage tank 11 that holds water pipe 20 all need the adaptability to buckle promptly. Specifically, referring to fig. 4 and 5, the accommodating groove 11 includes a plurality of sub-grooves 111 sequentially arranged along the extending direction, and two adjacent sub-grooves 111 are arranged at an included angle; in this embodiment, referring to fig. 2 and 4, the included angle β between two adjacent sub-grooves 111 is an obtuse angle, so as to avoid stress concentration caused by an excessively large bending angle. Further, a transition groove 112 is arranged between 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 arranged at the position; because the controllability of the shape of the bent part is poor compared with that of a straight line part when the water pipe 20 is manufactured, and the wall thickness of the bent part is reduced, stress concentration is easy to occur, the width of the opening of the transition groove 112 is set to be larger than the outer diameter of the water pipe 20, so that excessive extrusion of the water pipe 20 and the groove wall of the accommodating groove 11 at the bent part is avoided during press mounting, and the bent part of the water pipe 20 is broken by a large external force; in specific implementation, in order to facilitate production, the outer diameters of the water pipes 20 are generally kept consistent, and therefore, in the embodiment, 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-grooves 111, a sufficient gap is left for the water pipe 20 at the position, and excessive extrusion of the water pipe 20 is avoided.

Further, since the sizes of the transition groove 112 and the sub-groove 111 are not the same, and the receiving groove 11 is usually formed by mechanical cutting, a sharp step is formed at the bent portion of the receiving groove 11, and local stress concentration is easily caused when the water pipe 20 is press-fitted, so that the water pipe 20 is cut and the water pipe 20 leaks. Therefore, in the present embodiment, referring to fig. 5, a chamfer C is provided between the groove wall of the transition groove 112 and the groove wall of the adjacent sub-groove 111, and the angle of the chamfer C is greater than 90 degrees, so as to avoid the generation of sharp transition edges as much as possible. Specifically, the angle of the chamfer C may be 100 degrees, 125 degrees, or 160 degrees. Further, the wall of the transition groove 112 and the wall of the sub-groove 111 are smoothly transited to avoid the stress concentration between the water pipe 20 and the transition groove.

Referring to fig. 1 and 6, the two free ends of the accommodating groove 11 are provided with mounting seats 12, the mounting seats 12 are provided with water pipe joints 30, and the water inlets and the water outlets of the water pipes 20 are communicated with the outside through the water pipe joints 30, so as to realize the circulation of the cooling liquid. Specifically, the water pipe joint 30 is provided at a first side of the heat radiating plate 10; specifically, the mounting seat 12 is a protrusion protruding from the first side of the heat dissipating plate 10, and the water pipe connector 30 is mounted at a free end of the protrusion. Optionally, the water pipe connector 30 is fixed on the mounting seat 12 by a fastener; in this embodiment, the fasteners are screws. Further, referring to fig. 6, a first through hole 121 is formed in the mounting seat 12 along the thickness direction of the heat dissipation plate 10, and when the water pipe 20 is pressed into the accommodating groove 11, the free end of the water pipe 20 passes through the first through hole 121 and extends out of the first through hole 121, so that the subsequent assembly with the water pipe joint 30 is facilitated; further, the aperture of the first through hole 121 is gradually reduced in a direction away from the second side of the heat dissipation plate 10. Because the water pipe 20 is made of metal and other materials with higher hardness, for the special-shaped pipe fitting needing to be bent for many times in the embodiment, the tolerance of the water inlet and the water outlet cannot be very small, and in order to avoid the phenomenon that the water pipe 20 is blocked at the free end of the accommodating groove 11 during interference press mounting, so that assembly failure or damage to press mounting equipment is caused, the accuracy of positioning the water inlet and the water outlet of the water pipe 20 needs to be ensured during press mounting. Design first through-hole 121 for similar conical structure for water pipe 20 has great activity space at the free end of storage tank 11, avoids the card dead, and the conical structure can also play better guide effect to wearing to establish of water pipe 20 in first through-hole 121 simultaneously, avoids water pipe 20 to take place the offset. Further, referring to fig. 4, the accommodating groove 11 is smoothly transited to the first through hole 121, so as to further ensure that the water pipe 20 smoothly enters the mounting seat 12.

In one embodiment, the first through hole 121 may be a smooth tapered structure, i.e. the aperture thereof gradually decreases in a direction away from the second side of the heat dissipation plate 10 until reaching a minimum at the free end of the mounting seat 12. In another embodiment, referring to fig. 6, the first through hole 121 includes a first sub-portion 1211 and a second sub-portion 1212 connected in sequence, wherein the first sub-portion 1211 is closer to the second side of the heat dissipation plate 10 than the second sub-portion 1212, and the first sub-portion 1211 has a rounded tapered structure; the second sub-portion 1212 is cylindrical, that is, the diameter of the second sub-portion 1212 is consistent and is equal to or slightly larger than the outer diameter of the water pipe 20, so that the water pipe 20 can be roughly guided by the first sub-portion 1211, and the water pipe 20 can be limited as sufficiently as possible by the second sub-portion 1212, so as to ensure that the axes of the water pipe 20 and the first through hole 121 coincide as much as possible; in practice, however, in order to facilitate the mold-drawing operation during the molding process of the second sub-portion 1212, the second sub-portion 1212 should have a certain mold-drawing taper, but the taper is usually small, and does not affect the sufficient limit of the whole second sub-portion 1212 on the water pipe 20.

Still referring to fig. 6, further, the water pipe joint 30 is opened with a second through hole 31, and the second through hole 31 is coaxially disposed with the first through hole 121 and is communicated with each other, so as to facilitate the cooling liquid to flow into the water pipe 20 from the water pipe joint 30 or flow out from the water pipe 20 to the water pipe joint 30. The aperture of the second through hole 31 is slightly larger than the outer diameter of the water pipe 20, so that the water pipe 20 can be smoothly sleeved into the water pipe connector 30. Further, the aperture of the second through hole 31 at the connection position of 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 wall of the end of the second through hole 31 connected with the first through hole 121 is provided with a guiding inclined plane, so that when the water pipe joint 30 is assembled subsequently, the water pipe 20 can be quickly assembled with the water pipe joint 30 through the guiding inclined plane, and the water pipe joint 30 can be smoothly inserted without being blocked at the junction.

Specifically, referring to fig. 3 and 6, at least two bosses 21 are respectively arranged on the outer circumferential surfaces of the water inlet and the water outlet of the water pipe 20, two adjacent bosses 21 are arranged at intervals along the axial direction of the water pipe 20 to form a sealing groove 22, a sealing element 40 is arranged in the sealing groove 22, the sealing element 40 is limited between the two bosses 21 and cannot move freely, and the position stability of the sealing element 40 is ensured; the sealing member 40 is compressed between the outer wall of the water tube 20 and the inner wall of the water tube fitting 30 for sealing the circumferential gap between the water tube 20 and the water tube fitting 30. In specific implementation, the sealing groove 22 may be formed directly on the outer wall of the water pipe 20 by mechanical cutting. In this embodiment, 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, so that the forming process of the sealing groove 22 is simplified, and stress concentration caused by mechanical cutting can be avoided. Further, as shown in fig. 6, a limiting step 32 is further disposed on the hole wall of the second through hole 31, and the limiting step 32 limits the length of the water pipe 20 extending into the water pipe connector 30 by abutting against the boss 21 on the water pipe 20, that is, the water pipe 20 and the water pipe connector 30 are installed and positioned.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A heat dissipation structure, comprising:

the heat dissipation plate (10) is provided with a first side and a second side which are arranged along the thickness direction, the first side of the heat dissipation plate (10) is used for being attached to a to-be-dissipated part, and an accommodating groove (11) is formed in the second side of the heat dissipation plate (10);

the water pipe (20) is in interference fit in the accommodating groove (11), and at least part of the outer wall of the water pipe (20) is attached to the wall of the accommodating groove (11).

2. The heat dissipation structure of claim 1, wherein the accommodating groove (11) is a strip-shaped structure, and the water inlet and the water outlet of the water pipe (20) are respectively led out from two free ends of the accommodating groove (11).

3. The heat dissipation structure of claim 2, wherein the accommodating groove (11) comprises a plurality of sub-grooves (111) sequentially arranged along the extending direction, and two adjacent sub-grooves (111) are arranged at an included angle;

a transition groove (112) is arranged between 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) arranged at the opening.

4. The heat dissipation structure of claim 3, wherein a chamfer is provided between a groove wall of the transition groove (112) and a groove wall of the adjacent sub-groove (111), and the chamfer has an angle greater than 90 degrees.

5. The heat dissipation structure of claim 2, wherein the free ends of the accommodating groove (11) are provided with mounting seats (12), the mounting seats (12) are provided with water pipe connectors (30), and the water inlet and the water outlet of the water pipe (20) are communicated with the outside through the water pipe connectors (30).

6. The heat dissipation structure of claim 5, wherein the water pipe joint (30) is disposed at the first side of the heat dissipation plate (10), the mounting seat (12) is provided with a first through hole (121) along the thickness direction of the heat dissipation plate (10), and the water pipe (20) passes through the first through hole (121) and then extends into the water pipe joint (30); the aperture of the first through hole (121) is gradually reduced in a direction away from the second side of the heat dissipation plate (10).

7. The heat dissipation structure of claim 6, wherein the water pipe connector (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 are communicated with each other.

8. The heat dissipation structure of claim 7, wherein a guiding inclined surface is provided on a hole wall of an end of the second through hole (31) connected to the first through hole (121).

9. The heat dissipation structure of claim 7, wherein at least two bosses (21) are disposed on the outer circumferential surface of each of the water inlet and the water outlet of the water pipe (20), two adjacent bosses (21) are spaced apart along the axial direction of the water pipe (20) to form a sealing groove (22), a sealing member (40) is disposed in the sealing groove (22), and the sealing member (40) is used for sealing the circumferential gap between the water pipe (20) and the water pipe joint (30).

10. The heat dissipation structure of claim 9, wherein a limit step (32) is provided on a hole wall of the second through hole (31), and the limit step (32) limits the protruding length of the water pipe (20) by abutting against the boss (21).