CN204291728U - Water-cooling plate, water-cooling assembly and comprise the equipment of this water-cooling assembly - Google Patents

Abstract

The utility model discloses a water-cooled heat dissipation plate, a water-cooled heat dissipation assembly and equipment including the water-cooled heat dissipation assembly. The water-cooled heat dissipation plate comprises: a body, a water inlet part and a water outlet part, wherein: the body has a first surface and a second surface , the first surface is used to set the device to be cooled, so that the temperature of the device to be cooled is lowered; the second surface is distributed with a number of protrusions, and the gaps between the protrusions form water channels, and the The water part is in fluid communication with the water outlet part through the water channel. The utility model has better heat dissipation effect, and provides favorable conditions for efficiently cooling down the cooling device.

Description

Water-cooling heat sink, water-cooling heat dissipation assembly and equipment including the water-cooling heat dissipation assembly

technical field

The utility model relates to a water cooling device, in particular to a water cooling heat dissipation plate, a water cooling heat dissipation assembly and equipment including the water cooling heat dissipation assembly.

Background technique

The key device of the motor controller for new energy vehicles, IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) is the main power device in the motor controller, and its heat dissipation is very large during operation. At present, there are two forms of heat dissipation for motor controllers used in domestic new energy vehicles: air-cooled and water-cooled. Among them, air-cooled heat dissipation is relatively large in size, poor in heat dissipation, and rarely used. Therefore, the application range of water-cooled heat dissipation is relatively wider. The water-cooling heat dissipation structure usually includes a water inlet and a water outlet, and a water channel is formed through the barrier of the water channel isolation groove, and the water channel is provided with a cover plate fixed by screws. The cooling water enters the water channel from the water inlet, takes away the heat from the IGBT located above the water channel, and the heated cooling water flows out of the motor controller through the water outlet. In the prior art, the water channel is formed by the shunt plate. After the water inlet flows into the water channel, due to the gradual increase of the cooling water temperature, the cooling effect of the rear section of the water channel gradually decreases, so the heat dissipation effect of the area that can dissipate heat in the rear section of the water channel decreases, and at the same time, each IGBT Part of the heat dissipation effect is uneven, and the contact area between the water channel and the cooling water is limited, and the heat dissipation efficiency is low, which directly affects the working efficiency of the IGBT.

It is therefore desirable to have a technical solution to overcome or at least alleviate one or more of the above-mentioned drawbacks of the prior art.

Utility model content

The purpose of the utility model is to provide an improved water-cooled radiator plate, a water-cooled radiator assembly and equipment including the water-cooled radiator assembly.

In order to achieve the above object, the utility model provides a water-cooled heat dissipation plate, which includes: a body, a water inlet and a water outlet, wherein: the body has a first surface and a second surface, and the first surface is used for setting the Cooling the device so that the device to be cooled is cooled; the second surface is distributed with a number of protrusions, and the gaps between the protrusions form a water channel, and the water inlet part passes through the water channel and the water outlet internal fluid communication.

Further, the protruding portions are alternately distributed on the second surface.

Further, the raised portion is in the shape of a truncated cone.

Further, the water outlet height of the water outlet part is higher than that of the waterway.

Further, the water inlet part includes a U-shaped groove plate in cross section, which is connected to one end of the first surface and has a top surface higher than the second surface; the water outlet part includes a U-shaped groove plate in cross section. The slot plate is connected to the other end of the first surface and has a top surface higher than the second surface.

Further, the body, the raised part, the water inlet part and the water outlet part are integrally formed.

Since the utility model adopts the method of forming a water channel by multiple convex parts, the cooling water can pass through the water inlet part and enter the water channel, and the heat of the device to be cooled is transferred to the second surface, and then transferred from the second surface to the first Surface and each raised part, at this time, the cooling water entering the water channel can absorb part of the heat on the first surface and each raised part to increase the temperature, and discharge it through the water outlet, repeat the above process, and then the effective To lower the temperature of the device to be cooled, compared with the water channel formed by the water channel isolation groove or the diverter sheet in the prior art, the area of the water channel formed by the raised part provided by the utility model is larger, and it can be contacted under the same water flow velocity. The larger the area, the better the heat conduction effect and the better the heat dissipation effect, which provides favorable conditions for efficiently cooling the cooling device.

The utility model also provides a water-cooling heat dissipation assembly, including a cover plate and the water-cooling heat dissipation plate in the above-mentioned embodiments, the cover plate covers the second surface of the water-cooling heat dissipation plate, and the water-cooling heat dissipation plate together form a closed chamber.

Further, the cover plate is basically attached to the second surface.

The utility model also provides a device including a water-cooling and heat-dissipating component, and the water-cooling and heat-dissipating component is the water-cooling and heat-dissipating component in the above-mentioned embodiments.

Further, a heat conduction layer is laid on the first surface of the water cooling heat dissipation assembly.

Further, the device is an automobile motor controller, the automobile motor controller includes a casing and an IGBT, the bottom plate of the casing is the water-cooled heat dissipation assembly, and the IGBT is a device to be cooled.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a water-cooled heat dissipation assembly provided by the present invention;

Fig. 2 is a schematic diagram of the distribution of the water channels in Fig. 1 on the second surface.

Reference signs:

1 ontology 2 Inlet 3 Izumi 4 Raised part 5 cover plate 6 sealed chamber 11 first surface 12 second surface twenty one Slot plate twenty two water intake 31 Slot plate 32 water intake A Device to be cooled

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model more clear, the technical solution in the utility model embodiment will be described in more detail below in conjunction with the accompanying drawings in the utility model embodiment. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some embodiments of the present utility model, but not all embodiments. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model. Embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

In describing the present invention, it should be understood that the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or It should not be construed as limiting the protection scope of the present invention by implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation.

FIG. 1 shows a schematic structural view of an embodiment of a water-cooling heat dissipation assembly. As shown in Figure 1, the water-cooled heat dissipation plate provided in this embodiment includes: a body 1, a water inlet 2 and a water outlet 3, wherein: the body 1 has a first surface 11 and a second surface 12, and the first surface 11 is used for Set the device to be cooled A, that is to say, the first surface 11 directly installs the device to be cooled A, the heat of the device to be cooled A is transferred to the second surface 12 through heat transfer, and then transferred to the first surface 11 from the second surface 12 . A plurality of protrusions 4 are distributed on the second surface 12 , and the gaps between the protrusions 4 form water channels through which the water inlet part 2 is in fluid communication with the water outlet part 3 .

With this structure, the cooling water can pass through the water inlet part 2 and enter the water channel, the heat of the device A to be cooled is conducted to the second surface 12, and then is conducted from the second surface 12 to the first surface 11 and the raised parts. 4. At this time, the cooling water entering the water channel can absorb part of the heat on the first surface 11 and each raised part 4 to raise the temperature, and then discharge through the water outlet part 3 . By repeating the above process, the temperature of the device A to be cooled can be effectively lowered. Compared with the water channel formed by the water channel isolation groove or the diverter plate in the prior art, the area of the water channel formed by the raised part provided by the utility model is larger, and the larger the contact area is, the better the heat conduction effect is under the same water flow velocity. , the better the heat dissipation effect, which provides favorable conditions for efficiently cooling down the cooling device.

In the above-mentioned embodiment, each protruding portion 4 is distributed alternately on the second surface 12 to form a heat dissipation area. This staggered distribution can bring two advantages:

One, when the water flow passes through the water channel of the front row, it just collides with the raised portion 4 of the rear row, that is to say, the raised portion 4 of the rear row becomes an “obstacle” of the water flow, causing the water flow to produce a distribution different from the flow direction of the water flow. Speed, thus generating a lot of small turbulent flow, while increasing the flow path of the water flow, increasing the contact area of the water flow in a disguised form, and increasing the water resistance.

Its two, when cooling water flows, because liquid has viscosity, the liquid mass point that is close to the wall surface of raised portion 4 will paste and be attached to the wall surface of raised portion 4, and the liquid flow velocity will increase from the wall surface of raised portion 4. A value of zero increases to the mainstream flow velocity, forming a certain velocity gradient. According to Newton's law of inner friction, the existence of this flow velocity gradient will cause the friction shear force of the adjacent layer of liquid, that is, water resistance.

The greater the water resistance formed above, the greater the pressure difference in the flow direction of the cooling water, so that the water flow speed can be increased, and the cooling water can exchange heat to the cooling water faster.

The raised portion 4 can be die-cast integrally with the body 1 , and the pressure difference of the water resistance can be controlled by controlling the height of the raised portion 4 and the size of the gap between the raised portions 4 . In this embodiment, the protruding part 4 may be in the shape of a truncated cone, or other shapes may be adopted, but compared with other shapes, the truncated circular shape has the advantage of simple processing technology.

In the above embodiments, the water outlet height of the water outlet part 3 is higher than the water channel, that is, the water outlet height of the water outlet part 3 is higher than the second surface 12 . In this setting, even if a small amount of air bubbles are mixed into the cooling water, the air bubbles will be easily released from the water outlet due to the dual effects of their own gravity and the pressure of the water inlet part 2 being greater than the heat dissipation area formed by the water channel. 3 discharge, so as to avoid the occurrence of high local temperature in the heat dissipation area caused by air bubble retention.

As a preferred embodiment of the water inlet portion 2 and the water outlet portion 3 , the water inlet portion 2 and the water outlet portion 3 are respectively located at two ends of the body 1 .

Specifically, the water inlet part 2 includes a slot plate 21 and a water inlet 22 opened on a side of the slot plate 21 . The cross-section of the slot plate 21 is U-shaped, it is connected to one end of the first surface 11 and its top surface is higher than the second surface 12. At this time, the slot plate 21 is formed between the water inlet 22 and the water channel formed by the raised portion 4. water tank. When the cooling water enters the water storage tank from the water inlet 22, due to the pressure difference of the water resistance, the cooling water can be accumulated in the water storage tank first, and when the cooling water in the water storage tank is filled, under the action of the water resistance pressure difference, In the water channels formed by the raised parts 4, cooling water can flow through more water channels formed by the raised parts 4, so that the heat dissipation area can be larger and more uniform.

Similarly, the water outlet part 3 includes a groove plate 31 and a water outlet 32 opening on the side of the groove plate 31 . The cross section of the slot plate 31 is U-shaped, it is connected to the other end of the first surface 11 and its top surface is higher than the second surface 12 . The main purpose of this structure is to make the water outlet height of the water outlet 32 higher than the water channel.

In the above-mentioned embodiments, the main body 1, the raised part 4, the water inlet part 2 and the water outlet part 3 are integrally formed to form a wave shape, such as shape. The integrated molding process can be realized by existing processes such as die-casting, which can save processing costs, facilitate production, and improve production efficiency.

The utility model also provides a water-cooled heat dissipation assembly, which includes a cover plate 5 and the water-cooled heat dissipation plate in the above-mentioned embodiments, the cover plate 5 covers the second surface 12 of the water-cooled heat dissipation plate, and the cover plate 5 is sealed with the water-cooled heat dissipation plate Combined, the airtight chamber 6 is formed together with the water-cooled heat dissipation plate. Certainly, the cover plate 5 is basically attached to the second surface 12 , so as to prevent the airtight chamber 6 from being too large to affect heat dissipation.

The utility model also provides a device including a water-cooling and heat-dissipating component, and the water-cooling and heat-dissipating component is the water-cooling and heat-dissipating component in the above-mentioned embodiments.

Of course, in order to improve the heat conduction performance of the present invention, a heat conduction layer can also be laid on the first surface 11 of the water cooling heat dissipation assembly, such as a heat conduction layer made of a material with better heat conduction effect such as heat conduction silicone grease.

The above-mentioned device including the water-cooling heat dissipation component may be an automobile motor controller, such as a motor controller for a new energy automobile. The automobile motor controller includes a casing and an IGBT, the bottom plate of the casing is set as the water-cooled heat dissipation assembly in the above embodiments, and the IGBT is the device A to be cooled. The heat exchange rate between the protrusion and the cooling water can be effectively improved by the water-cooling heat dissipation assembly, which provides favorable conditions for efficiently cooling the IGBT, thereby ensuring the heat dissipation of the IGBT and further ensuring the working efficiency of the IGBT. The other parts of the automotive motor controller are all prior art, and will not be described here.

Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solution of the present utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features; and These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (11)

1. a water-cooling plate, it is characterized in that, comprise: body (1), water entering section (2) and outlet part (3), wherein: described body (1) has first surface (11) and second surface (12), described first surface (11), for arranging device to be cooled (A), is lowered the temperature to make described device to be cooled (A); Described second surface (12) is distributed with some lug bosses (4), gap between each described lug boss (4) forms water channel, and described water entering section (2) is communicated with described outlet part (3) fluid by described water channel.

2. water-cooling plate as claimed in claim 1, it is characterized in that, each described lug boss (4) is interspersed at described second surface (12).

3. water-cooling plate as claimed in claim 2, it is characterized in that, described lug boss (4) is in round table-like.

4. water-cooling plate as claimed any one in claims 1 to 3, it is characterized in that, the freeboard of described outlet part (3) is higher than described water channel.

5. water-cooling plate as claimed in claim 4, it is characterized in that, described water entering section (2) comprises the frid (21) of U-shaped profile, its be connected with one end of described first surface (11) and apical side height higher than described second surface (12); Described outlet part (3) comprises the frid (31) of U-shaped profile, its be connected with the other end of described first surface (11) and apical side height higher than described second surface (12).

6. water-cooling plate as claimed in claim 5, it is characterized in that, described body (1), described lug boss (4), described water entering section (2) and described outlet part (3) are one-body molded.

7. a water-cooling assembly, it is characterized in that, comprise cover plate (5) and the water-cooling plate according to any one of claim 1 to 6, described cover plate (5) is placed on the second surface (12) in described water-cooling plate, jointly forms airtight chamber (6) with described water-cooling plate.

8. water-cooling assembly as claimed in claim 7, is characterized in that, described cover plate (5) and described second surface (12) are fitted substantially.

9. comprise an equipment for water-cooling assembly, it is characterized in that, described water-cooling assembly is water cooling radiating subassembly as claimed in claim 7 or 8.

10. comprise the equipment of water-cooling assembly as claimed in claim 9, it is characterized in that, the first surface (11) in described water cooling radiating subassembly is equipped with heat-conducting layer.

11. equipment comprising water-cooling assembly as claimed in claim 10, it is characterized in that, described equipment is automotive motor controller, described automotive motor controller comprises housing and IGBT, the base plate of described housing is described water-cooling assembly, and described IGBT is device to be cooled (A).