Water cooling plate with embedded pipeline and cooling system

Abstract

The utility model discloses a water cooling plate with an embedded pipeline and a cooling system, and the water cooling plate can be applied to the cooling system for heat exchange to realize heat dissipation. The water cooling plate comprises a base plate and a pipeline, a pipeline groove matched with the pipeline in shape is formed in the base plate, and the pipeline is machined through the pipe bending technology and sequentially comprises a water inlet, a water inlet section, an acting section, a water outlet section and a water outlet from the liquid flowing direction. Wherein the water inlet section, the acting section and the water outlet section are fixed in the pipeline groove, and the water inlet and the water outlet extend out of the side face of the base plate. Due to the fact that the pipeline of the water cooling plate is formed by machining a complete pipeline, all parts in the flow channel are uniform and smooth, water resistance can be effectively reduced, meanwhile, dead zones in the pipeline are avoided, and heat dissipation efficiency is improved. And meanwhile, the pipeline is tightly attached to the base plate, so that the heat transfer efficiency can be ensured. In addition, due to the fact that the pipeline is a complete pipeline, the pressure resistance of the pipeline is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal management, in particular to a water cooling plate with embedded pipelines and a cooling system. Background Art

[0002] With the development of power electronics technology, the power density of power electronics products is increasing. In order to ensure product performance and avoid product failure caused by high temperature, the cooling system and method should be reasonably designed according to the product's own performance, shape and other parameters. At present, water cooling plates are usually used to cool batteries in some systems such as fuel cells. The battery water cooling plate device can stabilize the battery temperature within a certain range, improve the battery's charging and discharging performance, and extend the battery's service life.

[0003] A common water-cooled plate includes a substrate and a flow channel. For example, patent CN217544720U discloses a battery water-cooled plate device, which forms a flow channel on a substrate by injection, extrusion or pressing, and then sets a water-cooled plate cover on the water-cooled plate substrate by structural bonding. At the same time, it requires additional water outlet and water inlet devices. The water-cooled plate is made of a material with a high coefficient of expansion, so the aperture of the flow channel will automatically change with temperature changes. However, the manufacturing process of this water-cooled plate is complicated, and the connection process with the cooling circuit is also complicated. In addition, it adopts a cover plate structure, so that the overall pressure it can withstand is relatively small.

[0004] The water cooling plate disclosed in patent CN 220106754 U is made by stretching with a stretching die or by aluminum alloy die casting, and includes multiple parallel transverse channels, and longitudinal channels perpendicular to the transverse channels are arranged on both sides, and plugs are arranged at both ends of the transverse channels. The processing technology of this water cooling plate is simpler, but because its water channel is formed by splicing multiple channels, it is easy to have dead zones inside, which affects the heat dissipation efficiency. At the same time, its pressure resistance is also low. Utility Model Content

[0005] In view of some or all of the problems in the prior art, the first aspect of the present invention provides a water-cooling plate with embedded pipelines, comprising:

[0006] a base plate on which a curved pipe groove is provided, wherein the shape of the pipe groove is adapted to the pipe; and

[0007] The pipeline is manufactured by a pipe bending process, and comprises a water inlet, a water inlet section, an action section, a water outlet section and a water outlet in sequence along the liquid flow direction, wherein the water inlet section, the action section and the water outlet section are fixed in the pipeline groove, and the water inlet and the water outlet extend from the side of the substrate.

[0008] Furthermore, the action section comprises a plurality of parallel transverse tubes, wherein the connection portion between two adjacent transverse grooves is U-shaped or arc-shaped.

[0009] Furthermore, the substrate is made of aluminum alloy and is formed by die casting.

[0010] Furthermore, the pipe is made of metal.

[0011] Furthermore, the material of the pipe is copper metal.

[0012] Furthermore, the cross-sectional area and wall thickness of the pipeline are the same at all locations.

[0013] Furthermore, the water inlet and the water outlet are provided with threads for connection with an external cooling circuit.

[0014] Furthermore, the pipeline is welded in the pipeline groove by brazing.

[0015] Furthermore, the outer diameter of the pipe does not exceed the depth of the pipe groove.

[0016] Based on the water cooling plate as described above, the second aspect of the utility model provides a cooling system, which includes the water cooling plate as described above, and the water cooling plate is arranged on the surface of the component to be cooled.

[0017] The utility model provides a water-cooled plate with embedded pipes, wherein the pipes are formed by bending pipes with consistent cross-section and wall thickness, so that the interior of the flow channel is uniform and smooth, which can effectively reduce water resistance and avoid dead zones in the pipes, thereby improving heat dissipation efficiency. At the same time, the pipes are embedded in the grooves on the substrate, and the pipes fit tightly with the substrate to ensure heat transfer efficiency. In addition, since the pipe is a complete pipe, its pressure resistance is higher. According to tests, the water channel formed by friction welding or screws plus sealing rings in the traditional water-cooled plate can only withstand a pressure of about 0.2MPa, while a complete copper pipe can withstand a pressure of up to 2MPa. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more specific description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings only depict typical embodiments of the present invention and are therefore not to be considered as limiting the scope thereof. In the accompanying drawings, for clarity, identical or corresponding components will be represented by identical or similar reference numerals.

[0019] Figure 1 A schematic structural diagram showing a water cooling plate with embedded pipes according to an embodiment of the utility model;

[0020] Figure 2A schematic structural diagram showing a base plate of a water-cooling plate with embedded pipes according to an embodiment of the utility model; and

[0021] Figure 3 A schematic structural diagram of a pipe of a water cooling plate with embedded pipes according to an embodiment of the utility model is shown.

[0022] Reference numerals list

[0023] 101 substrate

[0024] 111 Pipe groove

[0025] 102 Pipe

[0026] 121 Water Inlet

[0027] 122 Water Intake Section

[0028] 123 Action segment

[0029] 124 Outlet Section

[0030] 125 Water outlet DETAILED DESCRIPTION

[0031] The present invention is further described below with reference to the accompanying drawings in conjunction with specific embodiments. It should be noted that the components in the accompanying drawings may be exaggerated for illustration purposes and are not necessarily proportionally correct. In the accompanying drawings, the same or functionally identical components are provided with the same reference numerals.

[0032] In the present invention, unless otherwise specified, "arranged on...", "arranged above..." and "arranged above..." do not exclude the existence of an intermediate object between the two. In addition, "arranged on or above..." only indicates the relative positional relationship between two components, and in certain circumstances, such as after reversing the product direction, it can also be converted into "arranged under or below...", and vice versa.

[0033] In the present invention, each embodiment is only intended to illustrate the solution of the present invention and should not be understood as limiting.

[0034] In the present invention, unless otherwise specified, the quantifiers "a", "an" and "an" do not exclude the presence of multiple elements.

[0035] It should also be pointed out that in the embodiments of the present invention, for the sake of clarity and simplicity, only a portion of the parts or components may be shown, but a person of ordinary skill in the art will understand that, under the guidance of the present invention, required parts or components may be added according to the needs of specific scenarios.

[0036] It should also be pointed out that within the scope of the present invention, the terms "same", "equal", "equal to" and the like do not mean that the values ​​of the two are absolutely equal, but allow a certain reasonable error, that is, the terms also cover "substantially the same", "substantially equal", "substantially equal to". By analogy, in the present invention, the terms "perpendicular to", "parallel to", etc. indicating directions also cover the meanings of "substantially perpendicular to" and "substantially parallel to".

[0037] In view of the problems that the existing water-cooled plate and cooling circuit connection process is complicated, there are dead zones, low heat dissipation efficiency, and low pressure resistance, the utility model provides a water-cooled plate with embedded pipes, which embeds pipes with consistent diameter and wall thickness on the base plate, thereby improving the pressure resistance of the water-cooled plate. At the same time, the pipe diameter remains unchanged and is connected in series at various locations, which can also effectively avoid the occurrence of dead zones, thereby improving the heat dissipation efficiency of the water channel. Finally, screw threads are arranged at the connection port, which solves the problem of complicated connection process between the water-cooled plate and the cooling circuit.

[0038] The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings.

[0039] Figure 1 The schematic diagram of the structure of a water cooling plate with embedded pipes in one embodiment of the utility model is shown. Figure 1 As shown, a water-cooled plate with embedded pipes includes a base plate 101 and a pipe 102. Figure 1 As shown, the pipe 102 is embedded in the substrate 101, but the two ends of the pipe 102 extend from the side of the substrate 101. In an embodiment of the utility model, the two ends of the pipe 102 are respectively set as a water inlet 121 and a water outlet 125. In order to facilitate the connection with the external cooling circuit, in one embodiment of the utility model, the water inlet 121 and the water outlet 125 are provided with threads, wherein the threads can be provided on the outer surface of the water inlet 121 and the water outlet 125, or on the inner surface thereof, which can be specifically determined according to the form of the external cooling circuit connector. In order to better improve the heat transfer efficiency, in one embodiment of the utility model, the substrate 101 and the pipe 102 are both made of metal material, which has high thermal conductivity and can provide better heat dissipation performance. In one embodiment of the utility model, the substrate 101 is made of aluminum alloy and is formed by die casting. In one embodiment of the utility model, the pipe 102 is made of copper metal. In order to ensure that the pipe 102 is closely fitted to the substrate 101 , in one embodiment of the present invention, the pipe 102 is welded to the substrate 101 by brazing.

[0040] Figure 2 The schematic diagram of the structure of a base plate of a water cooling plate with embedded pipes in one embodiment of the utility model is shown. Figure 2 As shown, a pipe groove 111 is provided on the first surface of the substrate 101, and the pipe 102 is provided in the pipe groove 111. In one embodiment of the utility model, the surface of the pipe 102 is not higher than the surface of the substrate 101, that is, the outer diameter of the pipe 102 does not exceed the depth of the pipe groove 111. The second surface of the substrate 101 is a flat surface, which can be in direct contact with the component to be cooled. Figure 3 A schematic diagram of the structure of a pipe of a water cooling plate with an embedded pipe according to an embodiment of the utility model is shown. Figure 3 As shown, the pipeline 102 includes a water inlet 121, a water inlet section 122, an action section 123, a water outlet section 124 and a water outlet 125. In order to increase the heat dissipation area, in one embodiment of the present utility model, the action section 123 includes a plurality of parallel transverse tubes, wherein one end of two adjacent transverse tubes is connected through a U-shaped tube. Figure 3 As shown, in one embodiment of the utility model, the water inlet section 122 and the water outlet section 124 are arranged perpendicular to the transverse tube. It should be understood that in other embodiments of the utility model, the water inlet section and the water outlet section can also be arranged parallel to the transverse tube, or form an angle with the transverse tube, but the water inlet section and the water outlet section are preferably connected to the action section by a U-shaped or arc-shaped pipe to avoid forming a dead zone. As mentioned above, in one embodiment of the utility model, the pipeline 102 is formed by a pipeline bending process, that is, the U-shaped and / or arc-shaped connection parts between each pipeline are formed by a pipe bending process. Therefore, the cross-sectional area and wall thickness of each part of the pipeline 102 are the same, and the inner wall is uniform and smooth, which effectively reduces the water resistance and improves the pressure resistance. The shape of the pipeline groove 111 on the substrate is adapted to the pipeline 102, so that the pipeline 102 can be tightly fixed in the pipeline groove 111.

[0041] Based on the water-cooled plate as described above, the utility model further provides a cooling system, which includes the water-cooled plate as described above, the water-cooled plate is arranged on the surface of the component to be cooled, and its second surface can be in direct contact with the component to be cooled, for example. The water-cooled plate can be used for heat dissipation of the battery cell of the energy storage battery. Specifically, the water-cooled plate as described above is arranged at the outer surface of the battery cell or at a certain position away from its outer surface, and the refrigerant enters the water-cooled plate from the water inlet of the water-cooled plate and flows out from its water outlet, absorbing the heat emitted by the battery cell in the process. In one embodiment of the utility model, a throttling element such as an expansion valve, a capillary tube, a throttling tube, etc. can also be arranged at the water inlet to throttle the refrigerant. The throttled refrigerant expands and evaporates rapidly in the water-cooled plate, and directly exchanges heat with the battery cell. The refrigerant absorbs the heat generated in the energy storage battery, especially in its battery cell, so that the energy storage battery is reduced to the expected temperature to achieve the cooling effect. After testing, the refrigerant is directly introduced into the energy storage battery through the water cooling plate. The refrigerant directly absorbs the heat generated by the battery cell, which can increase the heat exchange efficiency by more than 5%.

[0042] In one embodiment of the utility model, a water cooling plate as described above can be respectively arranged on the first and second surfaces of the battery cell of the energy storage battery or at a certain distance from the first and second surfaces. Each water cooling plate includes a water inlet and a water outlet, and a throttling element is also arranged at the water inlet. The throttling element refers to a device or element used to reduce the gas pressure to achieve the purpose of evaporation, for example, it can be: an expansion valve, a capillary tube, a throttling tube, etc.

[0043] In order to avoid the problem of uneven heat dissipation of the energy storage battery, in one embodiment of the utility model, the two water-cooling plates adopt a reverse inlet and outlet structure, that is, the fluids in the two water-cooling plates flow in opposite directions. This can be achieved by setting the inlet and outlet of the two water-cooling plates completely opposite to each other, that is, setting the outlet of one water-cooling plate on the same side as the inlet of the other water-cooling plate, and setting the inlet on the same side as the outlet of the other water-cooling plate.

[0044] In one embodiment of the utility model, the cooling of the refrigerant is achieved by an air-floating centrifugal compressor and a condenser. The air-floating centrifugal compressor is used to compress the refrigerant to form a refrigerant in a first state. The condenser is used to cool the refrigerant in the first state to form a refrigerant in a second state, the temperature of the second state is lower than that of the first state, but the pressure is the same. Specifically, the refrigerant is compressed by the air-floating centrifugal compressor in a centrifugal manner, the compressed high-temperature refrigerant reaches the condenser through the pipeline, the fan inhales the air at room temperature into the condenser fins, the condenser exchanges the heat of the internal high-temperature refrigerant with the air, and the condensed refrigerant flows directly into the water-cooled plate through the pipeline, wherein the refrigerant first reaches the throttling element, the throttling element throttles the refrigerant, and the throttled refrigerant rapidly expands and evaporates in the water-cooled plate, the refrigerant that has undergone throttling expansion directly exchanges heat with the battery cell, and the refrigerant absorbs the heat generated in the battery cell, thereby reducing the energy storage battery to the expected temperature, achieving the cooling effect, and the refrigerant that has absorbed heat from the battery returns to the air-floating centrifugal compressor again.

[0045] Although various embodiments of the utility model are described above, it should be understood that they are presented as examples only and not as limitations. It is obvious to those skilled in the relevant art that various combinations, modifications and changes can be made thereto without departing from the spirit and scope of the utility model. Therefore, the breadth and scope of the utility model disclosed herein should not be limited by the exemplary embodiments disclosed above, but should only be defined according to the attached claims and their equivalents.

Claims

1. A water-cooled plate with embedded pipes, characterized in that: include: a base plate, on which a pipe groove is provided, wherein the shape of the pipe groove is adapted to the pipe; and The pipeline is manufactured by a pipe bending process, and comprises a water inlet, a water inlet section, an action section, a water outlet section and a water outlet in sequence along the liquid flow direction, wherein the water inlet section, the action section and the water outlet section are fixed in the pipeline groove, and the water inlet and the water outlet extend from the side of the substrate.

2. The water cooling plate according to claim 1, characterized in that: The action section comprises a plurality of parallel transverse tubes, wherein the connection portion between two adjacent transverse tubes is U-shaped or arc-shaped.

3. The water cooling plate according to claim 1, characterized in that: The substrate is made of aluminum alloy and is formed by die casting.

4. The water cooling plate according to claim 1, characterized in that: The material of the pipe is metal.

5. The water cooling plate according to claim 1, characterized in that: The material of the pipe is copper metal.

6. The water cooling plate according to claim 1, characterized in that: The cross-sectional area and wall thickness of the pipeline are the same at all locations.

7. The water cooling plate according to claim 1, characterized in that: The water inlet and the water outlet are provided with threads for connecting with an external cooling circuit.

8. The water cooling plate according to claim 4, characterized in that: The pipe is welded in the pipe groove by brazing.

9. The water cooling plate according to claim 1, characterized in that: The outer diameter of the pipe does not exceed the depth of the pipe groove.

10. A cooling system, characterized in that: It comprises the water cooling plate as claimed in any one of claims 1 to 9, wherein the water cooling plate is arranged on the surface of the component to be cooled.

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