Double-sided heat dissipation direct cooling plate and manufacturing process and cooling system thereof

Abstract

The invention provides a double-sided heat dissipation direct cooling plate which comprises a first cover plate, a runner plate, a second cover plate and a connecting base, the first cover plate and the second cover plate are fixedly connected with the two opposite faces of the runner plate respectively, a runner groove is formed in the runner plate in a penetrating mode, the runner groove, the first cover plate and the second cover plate form a refrigerant runner, and the connecting base is communicated with the refrigerant runner. The invention further provides a manufacturing process of the double-face heat dissipation direct cooling plate and a cooling system.

Description

Technical Field

[0001] The present invention relates to the technical field of battery thermal management, and in particular to a double-sided heat dissipation direct cooling plate and a manufacturing process thereof, and a cooling system. Background Art

[0002] At present, with the continuous development of science and technology, my country's demand and requirements for energy storage batteries are getting higher and higher, especially for the thermal management of batteries. The battery cooling system has been converted from traditional air cooling to liquid cooling and direct cooling. Among them, the thermal management of batteries plays a pivotal role in the power batteries of new energy vehicles. Since the power battery will release heat during operation, preventing thermal runaway from occurring, the cooling system is directly related to the safety of the power battery system and the entire vehicle.

[0003] In the prior art, power batteries on the market generally use liquid cooling for heat dissipation. The liquid cooling system has the problems of long cooling time and low cooling efficiency. Especially when the power battery is fast charged, it cannot quickly take away the heat in a short time, and the battery temperature quickly reaches the sensor set temperature. If the set temperature is exceeded, charging and discharging will be current limited. There are also power batteries on the market that use direct cooling for heat dissipation. The direct cooling system directly arranges the direct cooling plate in the battery pack. The direct cooling plate has a refrigerant. The direct cooling plate has the function of an evaporator and can directly use the heat generated by the battery. Compared with the liquid cooling system, it reduces one heat exchange process. Its cooling efficiency is higher and it can cool the power battery in time, thereby avoiding excessive temperature rise.

[0004] However, the direct cooling system arranges the direct cooling plate in the battery pack. The direct cooling plate on the market can generally only meet single-sided heat dissipation. The heat dissipation efficiency of this direct cooling plate is low, and more direct cooling plates are needed to achieve better heat dissipation effect.

[0005] In addition, the flow channels on traditional direct cooling plates are generally formed by stamping. The flatness of traditional direct cooling plates after brazing is out of tolerance. In addition, the mold opening cost of traditional stamping direct cooling plates is high, the mold opening cycle is long, and high-tonnage punch presses are used. The equipment cost of high-tonnage punch presses is very high, and the mold needs to be re-opened when optimizing the flow channels, which is time-consuming and costly. Summary of the invention

[0006] The object of the present invention is to provide a direct cooling plate with double-sided heat dissipation and its manufacturing process, and a cooling system, aiming to solve or at least partially solve the shortcomings of the above-mentioned background technology. The direct cooling plate with double-sided heat dissipation has a simple structure, can realize double-sided heat dissipation of the direct cooling plate to improve the cooling efficiency of the cooling system, can achieve good flatness of the direct cooling plate without exceeding the tolerance, and can realize batch production of the direct cooling plate with a simple process, low cost and high efficiency without a mold, thereby greatly reducing development and production costs.

[0007] The present invention provides a direct cooling plate with double-sided heat dissipation, comprising a first cover plate, a flow channel plate, a second cover plate and a connecting seat. The first cover plate and the second cover plate are fixedly connected to the two opposite sides of the flow channel plate respectively. A flow channel groove is opened through the flow channel plate. The flow channel groove and the first cover plate and the second cover plate form a refrigerant flow channel. The connecting seat is connected to the refrigerant flow channel.

[0008] Furthermore, the first cover plate, the flow channel plate, and the second cover plate are respectively formed by laser cutting, wherein the flow channel groove is also formed by laser cutting.

[0009] Furthermore, the first cover plate and the second cover plate are fixedly connected to two opposite surfaces of the flow channel plate by brazing welding.

[0010] Furthermore, the connecting seat includes a liquid inlet connector and a gas outlet connector, and the liquid inlet connector and the gas outlet connector are respectively connected to the refrigerant flow channel.

[0011] Furthermore, the liquid inlet connector and the gas outlet connector are both arranged on the first cover plate, the first cover plate is provided with a first connecting hole and a second connecting hole, and the liquid inlet connector and the gas outlet connector are respectively installed at the first connecting hole and the second connecting hole.

[0012] Furthermore, the liquid inlet connector and the gas outlet connector are respectively located on the central axis of the first cover plate along the width direction, and the refrigerant flow channel is symmetrically distributed along the central axis; during operation, the refrigerant flows from the liquid inlet connector through the refrigerant flow channel to the side edge close to the first cover plate along the width direction, and then flows back to the gas outlet connector.

[0013] Furthermore, the liquid inlet connector has a liquid inlet channel connected to the first connecting hole, and a first positioning ring is protruding from one end of the liquid inlet channel close to the first connecting hole; the air outlet connector has an air outlet channel connected to the second connecting hole, and a second positioning ring is protruding from one end of the air outlet channel close to the second connecting hole.

[0014] Furthermore, a first limit platform is provided on the end of the first positioning ring of the liquid inlet connector away from the first connecting hole, and the first limit platform and the first positioning ring are arranged in a stepped shape; a second limit platform is provided on the end of the second positioning ring of the air outlet connector away from the second connecting hole, and the second limit platform and the second positioning ring are arranged in a stepped shape.

[0015] The present invention also provides a manufacturing process of a double-sided heat dissipation direct cooling plate, comprising the following steps: S1. Cut and process the first cover plate, the flow channel plate, and the second cover plate by laser cutting technology, and open the flow channel groove on the flow channel plate by laser cutting technology, and use CNC to process the liquid inlet connector and the gas outlet connector; S2. Clean the first cover plate, the flow channel plate, the second cover plate, the liquid inlet connector, and the gas outlet connector; S3, fixing the liquid inlet connector and the gas outlet connector on the first cover plate by welding rings respectively; S4, stacking the first cover plate, the flow channel plate, and the second cover plate in order, and then positioning and riveting them to form an assembly; S5, after the assembly is subjected to flux spraying, air blowing, and drying treatment, brazing is performed to obtain a double-sided heat dissipation direct cooling plate; S6. Perform helium detection on the refrigerant flow channel of the double-sided direct cooling plate.

[0016] The present invention also provides a cooling system, including a condenser, a compressor and the above-mentioned direct cooling plate with double-sided heat dissipation. The condenser, the compressor and the direct cooling plate with double-sided heat dissipation are connected through a refrigerant pipeline to form a cooling circulation loop. An expansion valve is arranged between the condenser and the direct cooling plate with double-sided heat dissipation.

[0017] The double-sided heat dissipation direct cooling plate provided by the present invention has a simple structure. The flow channel grooves provided through the flow channel plate cooperate with the first cover plate and the second cover plate to form a refrigerant flow channel, so that the first cover plate and the second cover plate can directly contact the refrigerant, and the first cover plate and the second cover plate can exchange heat with the outside at the same time, thereby realizing double-sided heat dissipation of the direct cooling plate and improving the cooling efficiency of the cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of a direct cooling plate with double-sided heat dissipation according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 A is an enlarged schematic diagram.

[0020] Figure 3 for Figure 1 A three-dimensional exploded view of a direct cooling plate with double-sided heat dissipation is shown.

[0021] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle.

[0022] Figure 5 for Figure 3 The enlarged schematic diagram of point C in the middle.

[0023] Figure 6 for Figure 3 A schematic diagram of the first cover plate is shown.

[0024] Figure 7 for Figure 3 A schematic diagram of the second cover plate is shown.

[0025] Figure 8 for Figure 3 Schematic diagram of the flow channel plate shown.

[0026] Fig. 9 for Figure 3 Schematic diagram of the liquid inlet connector and the gas outlet connector shown.

[0027] Fig.10 This is a stress cloud diagram obtained through a pressure simulation test of a direct cooling plate with double-sided heat dissipation in an embodiment of the present invention.

[0028] Fig.11 This is a displacement cloud diagram obtained by a pressure-resistant simulation test of a direct cooling plate with double-sided heat dissipation in an embodiment of the present invention.

[0029] Fig.12 The present invention is a flowchart of a manufacturing process of a direct cooling plate pipeline with double-sided heat dissipation in an embodiment of the present invention.

[0030] Fig.13 The figure is a schematic diagram of the pipe connection of a cooling system in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a particular sequence or order.

[0033] The directional words such as up, down, left, right, front, back, top, bottom, etc. (if any) involved in the specification and claims of the present invention are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of directional words should not limit the scope of protection claimed in this application.

[0034] See also Figure 1-Figure 3 and Figure 5 The embodiment of the present invention provides a double-sided heat dissipation direct cooling plate 10, including a first cover plate 11, a flow channel plate 12, a second cover plate 13 and a connecting seat 14. The first cover plate 11 and the second cover plate 13 are fixedly connected to the opposite sides of the flow channel plate 12, respectively, and a flow channel groove 121 is formed through the flow channel plate 12. The flow channel groove 121 and the first cover plate 11 and the second cover plate 13 form a refrigerant flow channel, and the connecting seat 14 is connected to the refrigerant flow channel.

[0035] The double-sided heat dissipation direct cooling plate 10 provided in the embodiment of the present invention has a simple structure. The flow channel groove 121 provided through the flow channel plate 12 cooperates with the first cover plate 11 and the second cover plate 13 to form a refrigerant flow channel, so that the first cover plate 11 and the second cover plate 13 can directly contact the refrigerant, and the first cover plate 11 and the second cover plate 13 can exchange heat with the outside at the same time, thereby realizing double-sided heat dissipation of the direct cooling plate and improving the cooling efficiency of the cooling system.

[0036] In the prior art, the flow channel of the traditional direct cooling plate is generally formed by stamping. The stamping process generally requires the use of a high-tonnage punch press, which not only has high equipment costs, high mold opening costs, and a long mold opening cycle, but also requires re-opening the mold when improving the flow channel, which cannot be completed quickly. In addition, since the flow channel is stamped, it will affect the flatness of the traditional direct cooling plate to a certain extent, causing it to be out of tolerance, thereby affecting subsequent production processes.

[0037] In this embodiment, the first cover plate 11 , the flow channel plate 12 , and the second cover plate 13 are respectively formed by laser cutting, wherein the flow channel groove 121 of the flow channel plate 12 is also formed by laser cutting.

[0038] See also Figure 10-11 In this embodiment, the thickness of the first cover plate 11 is 2mm, the thickness of the second cover plate 13 is 2mm, and the thickness of the flow channel plate 12 is 3mm, wherein the width of the flow channel groove 121 is 4mm, and the groove height of the flow channel groove 121 is 3mm. In addition, the yield strength of the double-sided heat dissipation direct cooling plate 10 is in the range of 55Mpa~72MPa. The double-sided heat dissipation direct cooling plate 10 is subjected to a pressure simulation test, and the pressure in the refrigerant flow channel is set to 4Mpa. The simulation test results show that when the refrigerant flow channel is under pressure at 4Mpa, the stress cloud map shows that the double-sided heat dissipation direct cooling plate 10 is not higher than the yield strength range, and no permanent deformation will occur; the displacement cloud map shows that the deformation of the double-sided heat dissipation direct cooling plate 10 is 0.08mm, and this deformation is less than 0.5mm, which means there is basically no deformation. From the above-mentioned pressure simulation test, the double-sided heat dissipation direct cooling plate 10 of the embodiment of the present invention. The deformation is extremely small, and its flatness does not exceed the tolerance and meets the production requirements.

[0039] As described above, the first cover plate 11, the flow channel plate 12, and the second cover plate 13 are processed by laser cutting. On the one hand, it can save the mold opening cost and mold opening cycle, shorten the product verification cycle, realize diversified product design, and quickly respond to customer production needs; on the other hand, it can solve the problem of flatness deviation of traditional direct cooling plates.

[0040] Furthermore, the first cover plate 11 and the second cover plate 13 are fixedly connected to the opposite sides of the flow channel plate 12 by brazing welding. By brazing welding, on the one hand, the brazing welding process can ensure the high pressure resistance and sealing of the direct cooling plate 10 with double-sided heat dissipation, and on the other hand, the brazing welding process is relatively simple and low in cost, which helps to reduce production costs. In addition, the brazing welding process enhances the strength of the first cover plate 11, the second cover plate 13, and the flow channel plate 12 to a certain extent.

[0041] For more details, see Figure 6-Figure 7 The first cover plate 11 is connected to the flow channel plate 12 on one side thereof as the first welding surface 114, and the second cover plate 13 is connected to the flow channel plate 12 on one side thereof as the second welding surface 132. The first welding surface 114 and the second welding surface 132 are respectively welded to the opposite sides of the flow channel plate 12 by brazing, and the first welding surface 114, the second welding surface 132 and the flow channel groove 121 form a refrigerant flow channel, and the first welding surface 114 and the second welding surface 132 are respectively in direct contact with the refrigerant in the refrigerant flow channel. The other side of the first cover plate 11 relative to the first welding surface 114 is the first contact surface 115, and the other side of the second cover plate 13 relative to the first welding surface 114 is the second contact surface 133. The first contact surface 115 and the second contact surface 133 are respectively in contact with the outside world for heat exchange, thereby realizing the function of double-sided heat dissipation.

[0042] For further information, see Figure 1 , Figure 4 and Fig. 9 The connection seat 14 includes a liquid inlet connector 141 and a gas outlet connector 142, and the liquid inlet connector 141 and the gas outlet connector 142 are respectively connected to the refrigerant flow channel.

[0043] The working principle of the double-sided heat dissipation direct cooling plate 10 is equivalent to that of an evaporator, and the two ends of the double-sided heat dissipation direct cooling plate 10 are respectively connected to the condenser and the compressor. When the double-sided heat dissipation direct cooling plate 10 is working, the refrigerant is in a high-pressure and medium-temperature liquid state after passing through the condenser, and then the refrigerant becomes a low-pressure mist-like liquid after being throttled by the expansion valve. The refrigerant enters the refrigerant flow channel through the liquid inlet connector 141, and the refrigerant absorbs external heat through the first cover plate 11 and the second cover plate 13. At this time, the refrigerant in the double-sided heat dissipation direct cooling plate 10 exists in a multi-phase state. When the refrigerant absorbs enough heat, it becomes a gaseous state, and the temperature does not change. The gaseous refrigerant leaves the double-sided heat dissipation direct cooling plate 10 through the gas outlet connector 142 and flows to the compressor.

[0044] According to actual production needs, the liquid inlet connector 141 and the gas outlet connector 142 can be arranged on the same side on the first cover plate 11 or the second cover plate 13, and the liquid inlet connector 141 and the gas outlet connector 142 can also be arranged on the first cover plate 11 and the second cover plate 13 respectively. In this embodiment, the liquid inlet connector 141 and the gas outlet connector 142 are both arranged on the first cover plate 11. The first cover plate 11 is provided with a first connecting hole 111 and a second connecting hole 112, and the liquid inlet connector 141 and the gas outlet connector 142 are respectively installed at the first connecting hole 111 and the second connecting hole 112. The liquid inlet connector 141 is connected to the refrigerant flow channel through the first connecting hole 111, and the gas outlet connector 142 is connected to the refrigerant flow channel through the second connecting hole 112.

[0045] See also Figure 8 , the liquid inlet connector 141 and the gas outlet connector 142 are respectively located on the central axis 100 of the first cover plate 11 along the width W direction, and the refrigerant flow channels are symmetrically distributed along the central axis 100; such a configuration can make the refrigerant flow channels evenly distributed, so that the refrigerant can flow evenly in the double-sided heat dissipation direct cooling plate 10 to perform heat exchange, and achieve the uniform temperature of the double-sided heat dissipation direct cooling plate 10. During operation, the refrigerant flows from the liquid inlet connector 141 through the refrigerant flow channels to the side edge close to the first cover plate 11 along the width W direction, and then flows back to the gas outlet connector 142.

[0046] See also Fig. 9 The liquid inlet connector 141 has a liquid inlet channel 1411 connected to the first connecting hole 111, and a first positioning ring 1412 is protruded from one end of the liquid inlet channel 1411 close to the first connecting hole 111; the first positioning ring 1412 penetrates into the first connecting hole 111, and the first positioning ring 1412 plays a positioning role. The liquid inlet connector 141 can be accurately and quickly aligned with the first connecting hole 111 through the first positioning ring 1412.

[0047] The air outlet connector 142 has an air outlet channel 1421 connected to the second connecting hole 112, and a second positioning ring 1422 is protruded from one end of the air outlet channel 1421 close to the second connecting hole 112; the second positioning ring 1422 penetrates into the second connecting hole 112, and the second positioning ring 1422 plays a positioning role. The air outlet connector 142 can be accurately and quickly aligned with the second connecting hole 112 through the second positioning ring 1422.

[0048] Furthermore, a first limit platform 1413 is provided at one end of the liquid inlet connector 141 at the first positioning ring 1412 away from the first connecting hole 111, and the first limit platform 1413 and the first positioning ring 1412 are arranged in a stepped shape; the first limit platform 1413 is in contact with the first contact surface 115 of the first cover plate 11, and can limit the first positioning ring 1412 from excessively extending into the first connecting hole 111 and blocking the refrigerant flow channel.

[0049] The air outlet connector 142 is provided with a second limit platform 1423 at one end of the second positioning ring 1422 away from the second connecting hole 112, and the second limit platform 1423 and the second positioning ring 1422 are arranged in a stepped shape; the second limit platform 1423 is in contact with the first contact surface 115 of the first cover plate 11, which can limit the second positioning ring 1422 from excessively extending into the second connecting hole 112 and blocking the refrigerant flow channel.

[0050] See also Figure 3 The first cover plate 11, the flow channel plate 12, and the second cover plate 13 are respectively provided with a first positioning hole 113, a second positioning hole 122, and a third positioning hole 131, which are respectively used to cooperate with positioning pins to position and align the first cover plate 11, the flow channel plate 12, and the second cover plate 13, and then the first cover plate 11, the flow channel plate 12, and the second cover plate 13 are pre-fixed by riveting.

[0051] The advantages of the double-sided heat dissipation direct cooling plate 10 provided in the embodiment of the present invention include: (1) Simple structure.

[0052] (2) Realize double-sided heat dissipation of the direct cooling plate to improve the cooling efficiency of the cooling system.

[0053] (3) The flatness of the direct cooling plate is good and within tolerance.

[0054] (4) The direct cooling plate can be mass-produced without a mold using a simple process, at a low cost, and efficiently, greatly reducing development and production costs.

[0055] See also Fig.12 The embodiment of the present invention also provides a manufacturing process of a double-sided heat dissipation direct cooling plate, comprising the following steps: S1. The first cover plate 11, the flow channel plate 12, and the second cover plate 13 are cut and processed by laser cutting technology, and the flow channel groove 121 is opened on the flow channel plate 12 by laser cutting technology, and the liquid inlet connector 141 and the gas outlet connector 142 are processed by CNC. More specifically, the first cover plate 11, the flow channel plate 12, and the second cover plate 13 are all processed by laser cutting machine, and the materials of the first cover plate 11 and the second cover plate 13 are selected from 4045 / 3003mod composite materials, and the material of the flow channel plate 12 is selected from 3003mod aluminum alloy; the liquid inlet connector 141 and the gas outlet connector 142 are processed by CNC machining center, and the materials of the liquid inlet connector 141 and the gas outlet connector 142 are selected from G77-T5 aluminum alloy.

[0056] S2, cleaning the first cover plate 11, the flow channel plate 12, the second cover plate 13, the liquid inlet connector 141, and the gas outlet connector 142 in an ultrasonic cleaning machine.

[0057] S3, respectively fix the liquid inlet connector 141 and the gas outlet connector 142 on the first cover plate 11 by stamping and riveting to prevent the liquid inlet connector 141 and the gas outlet connector 142 from falling off from the first cover plate 11 in subsequent processes; respectively fix the liquid inlet connector 141 and the gas outlet connector 142 on the first cover plate 11 by welding with welding rings. More specifically, during welding with welding rings, solder is placed at the joint between the first positioning ring 1412 of the liquid inlet connector 141 and the first connecting hole 111, and at the joint between the second positioning ring 1422 of the gas outlet connector 142 and the second connecting hole 112, and then the first cover plate 11 fixed with the liquid inlet connector 141 and the gas outlet connector 142 is placed in a continuous atmosphere protection brazing furnace for welding to achieve uniform distribution of the weld, thereby improving the strength and stability of the welding.

[0058] S4, stacking the first cover plate 11, the flow channel plate 12, and the second cover plate 13 in order, and then positioning and fixing them by riveting with toothed positioning pins to form an assembly.

[0059] S5. After the above assembly is subjected to flux spraying, air blowing and drying treatment, it is placed in a continuous atmosphere protection brazing furnace for brazing welding to obtain a double-sided heat dissipation direct cooling plate 10.

[0060] S6. Use a helium detector to perform helium detection on the refrigerant flow channel of the double-sided heat dissipation direct cooling plate 10 to check the air tightness of the refrigerant flow channel of the double-sided heat dissipation direct cooling plate 10.

[0061] See also Fig.13 An embodiment of the present invention further provides a cooling system, including a condenser 20, a compressor 30 and the above-mentioned direct cooling plate 10 with double-sided heat dissipation. The condenser 20, the compressor 30 and the direct cooling plate 10 with double-sided heat dissipation are connected through a refrigerant pipeline 50 to form a cooling circulation loop. An expansion valve 40 is arranged between the condenser 20 and the direct cooling plate 10 with double-sided heat dissipation.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A double-sided direct cooling plate, characterized in that: The invention comprises a first cover plate (11), a flow channel plate (12), a second cover plate (13) and a connecting seat (14); the first cover plate (11) and the second cover plate (13) are respectively fixedly connected to two opposite sides of the flow channel plate (12); a flow channel groove (121) is provided through the flow channel plate (12); the flow channel groove (121) and the first cover plate (11) and the second cover plate (13) form a refrigerant flow channel; the connecting seat (14) is connected to the refrigerant flow channel.

2. The double-sided heat dissipation direct cooling plate according to claim 1, characterized in that: The first cover plate (11), the flow channel plate (12), and the second cover plate (13) are respectively formed by laser cutting, wherein the flow channel groove (121) is also formed by laser cutting.

3. The double-sided direct cooling plate according to claim 1, characterized in that: The first cover plate (11) and the second cover plate (13) are fixedly connected to two opposite surfaces of the flow channel plate (12) by brazing welding.

4. The double-sided direct cooling plate according to claim 1, characterized in that: The connection seat (14) comprises a liquid inlet connection head (141) and a gas outlet connection head (142), and the liquid inlet connection head (141) and the gas outlet connection head (142) are respectively connected to the refrigerant flow channel.

5. The double-sided direct cooling plate according to claim 4, characterized in that: The liquid inlet connector (141) and the gas outlet connector (142) are both arranged on the first cover plate (11); a first connecting hole (111) and a second connecting hole (112) are provided on the first cover plate (11); the liquid inlet connector (141) and the gas outlet connector (142) are respectively installed at the first connecting hole (111) and the second connecting hole (112).

6. The double-sided direct cooling plate according to claim 4, characterized in that: The liquid inlet connector (141) and the air outlet connector (142) are respectively located on the central axis (100) of the first cover plate (11) in the width direction, and the refrigerant flow channel is symmetrically distributed along the central axis (100); when in operation, the refrigerant flows from the liquid inlet connector (141) through the refrigerant flow channel to the side edge close to the first cover plate (11) in the width direction, and then flows back to the air outlet connector (142).

7. The double-sided direct cooling plate according to claim 5, characterized in that: The liquid inlet connector (141) comprises a liquid inlet channel (1411) connected to the first connecting hole (111), and a first positioning ring (1412) is protrudingly provided at one end of the liquid inlet channel (1411) close to the first connecting hole (111); the air outlet connector (142) comprises an air outlet channel (1421) connected to the second connecting hole (112), and a second positioning ring (1422) is protrudingly provided at one end of the air outlet channel (1421) close to the second connecting hole (112).

8. The double-sided direct cooling plate according to claim 7, characterized in that: The liquid inlet connector (141) is provided with a first limit platform (1413) at one end of the first positioning ring (1412) away from the first connecting hole (111), and the first limit platform (1413) and the first positioning ring (1412) are arranged in a step-like manner; the air outlet connector (142) is provided with a second limit platform (1423) at one end of the second positioning ring (1422) away from the second connecting hole (112), and the second limit platform (1423) and the second positioning ring (1422) are arranged in a step-like manner.

9. A manufacturing process of a double-sided heat dissipation direct cooling plate, characterized in that: The following steps are involved: S1, using a laser cutting process to cut and process the first cover plate (11), the flow channel plate (12), and the second cover plate (13), and using a laser cutting process to open the flow channel groove (121) on the flow channel plate (12), and using CNC to process the liquid inlet connector (141) and the gas outlet connector (142); S2, cleaning the first cover plate (11), the flow channel plate (12), the second cover plate (13), the liquid inlet connector (141), and the gas outlet connector (142); S3, fixing the liquid inlet connector (141) and the gas outlet connector (142) on the first cover plate (11) by welding with welding rings respectively; S4, stacking the first cover plate (11), the flow channel plate (12), and the second cover plate (13) in order, and then positioning and riveting them to form an assembly; S5, spraying the assembly with flux, blowing off with air, and drying the assembly, and then brazing the assembly to obtain a double-sided heat dissipation direct cooling plate (10); S6. Performing helium detection on the refrigerant flow channel of the double-sided heat dissipation direct cooling plate (10).

10. A cooling system, comprising a condenser (20) and a compressor (30), characterized in that: It also includes a double-sided heat dissipation direct cooling plate (10) as described in any one of claims 1 to 8, wherein the condenser (20), the compressor (30), and the double-sided heat dissipation direct cooling plate (10) are connected via a refrigerant pipeline (50) to form a cooling circulation loop, and an expansion valve (40) is provided between the condenser (20) and the double-sided heat dissipation direct cooling plate (10).

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