Multi-channel integrated salt core die-casting liquid cooling plate

Abstract

The invention relates to the technical field of liquid cooling plates, in particular to a multi-channel integrated salt core die-casting liquid cooling plate which comprises a lower box body and an upper cover plate, a liquid cooling heat dissipation mechanism and a liquid guide mechanism are arranged in the lower box body, and an auxiliary heat dissipation mechanism is arranged outside the lower box body. The auxiliary heat dissipation mechanism is used for conducting heat into the liquid cooling heat dissipation mechanism to exchange heat with cooling liquid, the liquid guiding mechanism is used for enhancing fluid disturbance in the liquid cooling heat dissipation mechanism, the liquid cooling heat dissipation mechanism comprises a liquid inlet pipeline and a liquid outlet pipeline which are fixedly installed on one side of the lower box body, and a cooling cavity is formed in the lower box body. By arranging the liquid guide mechanism and utilizing the design of the multiple flow channels and the multi-partition-plate flow dividing structure, cooling liquid can be evenly distributed and form multiple flow paths, the problem that a flow dead zone is likely to be generated by a traditional straight-through type flow channel is effectively solved, it can be ensured that the cooling liquid makes full contact with a heat dissipation face, and the overall heat dissipation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling plates, and in particular to a multi-channel integrated salt core die-casting liquid cooling plate. Background Art

[0002] Liquid cooling plates, as efficient heat dissipation components, are widely used in electronic equipment, new energy vehicle battery packs and other fields. During the manufacturing process of traditional liquid cooling plates, the lower box and upper cover are usually die-cast as two independent components in sections, and then connected through welding processes such as friction welding and brazing. This not only increases production complexity, but may also affect the overall quality and reliability of the product due to welding defects.

[0003] Therefore, more and more people will adopt the integrated molding method to produce liquid cooling plates. However, the integrated liquid cooling plate flow channel design in the existing technology is single, the coolant flow is uneven, and it is easy to form flow dead zones, resulting in local poor heat dissipation. In addition, fixed flow rate cooling is mostly used, and the heat dissipation intensity cannot be dynamically adjusted according to the real-time temperature of the battery, which may lead to insufficient cooling or energy waste. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a multi-channel integrated salt core die-cast liquid cooling plate, which solves the technical problems in the existing technology of single liquid cooling plate flow channel design, uneven coolant flow, and easy formation of flow dead zones. It has the advantage of being able to make the coolant flow evenly in multiple streams, which can effectively avoid the formation of flow dead zones.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a multi-channel integrated salt core die-cast liquid cooling plate, comprising a lower box and an upper cover plate, wherein a liquid cooling heat dissipation mechanism and a liquid guiding mechanism are provided inside the lower box body, and an auxiliary heat dissipation mechanism is provided outside the lower box body, and the auxiliary heat dissipation mechanism is used to conduct heat to the interior of the liquid cooling heat dissipation mechanism for heat exchange with the coolant, and the liquid guiding mechanism is used to enhance the fluid disturbance in the liquid cooling heat dissipation mechanism. During the heat dissipation process, the coolant will enter the liquid cooling heat dissipation mechanism under the action of the pump and circulate. During this process, the auxiliary heat dissipation mechanism will conduct the heat of the equipment to the interior of the liquid cooling plate for heat exchange. At the same time, the liquid guiding mechanism will interfere with the flow of the coolant, thereby improving the cooling efficiency. The liquid cooling heat dissipation mechanism includes a liquid inlet pipe and a liquid outlet pipe fixedly installed on one side of the lower box body, a cooling cavity is opened inside the lower box body, and a plurality of buffer bosses for supporting the upper cover plate are provided inside the cooling cavity.

[0006] Preferably, the lower box body and the upper cover plate are integrally formed by salt core die casting. Salt core die casting mainly includes the steps of mold preparation, alloy smelting, high-pressure die casting, salt core removal and subsequent processing. The liquid cooling plate made in this way does not require subsequent welding and has excellent overall sealing performance.

[0007] Preferably, the liquid inlet pipe and the liquid outlet pipe are respectively connected to the cooling cavity. During the heat dissipation process, the coolant enters the cooling cavity from the liquid inlet pipe, flows through the cooling cavity, and then flows out through the liquid outlet pipe.

[0008] Preferably, the liquid guiding mechanism includes a first partition and a second partition arranged inside the cooling cavity, a first flow channel for the coolant to flow is formed between the first partition and the second partition, a second flow channel is formed between the first partition and the inner wall of the cooling cavity, and a third flow channel is formed between the second partition and the inner wall of the cooling cavity. After the coolant enters the interior of the cooling cavity from the liquid inlet pipe, it will flow inside the multiple flow channels and then flow out from the liquid outlet pipe.

[0009] Preferably, the surface of the first partition and the surface of the second partition are respectively provided with a plurality of spoiler ridges, and the inner side of the first partition and the inner side of the second partition are respectively provided with surface textures. The spoiler ridges and surface textures are used to enhance fluid disturbance and improve the heat transfer coefficient, which can improve the cooling effect of the liquid cooling plate to a certain extent.

[0010] Preferably, the auxiliary heat dissipation mechanism includes a heat dissipation cavity opened on the outside of the lower box body, a plurality of mounting screw holes are opened on the lower box body, a patch sensor is arranged inside the heat dissipation cavity, and the surface of the heat dissipation cavity is coated with a thermal conductive material. The heat generated by the battery pack will be quickly conducted to the inside of the cooling cavity under the action of the thermal conductive material.

[0011] Preferably, the patch sensor is used to detect the temperature of the battery pack surface, and the output power of the coolant pump can be regulated by the patch sensor, thereby dynamically adjusting the flow rate of the coolant according to the battery pack temperature.

[0012] By means of the above technical solution, the present invention provides a multi-channel integrated salt core die-cast liquid cold plate, which has at least the following beneficial effects:

[0013] 1. The present invention provides a liquid cooling heat dissipation mechanism and utilizes the mutual cooperation between the cooling cavity and the buffer convex column to support the upper cover plate to prevent deformation and enhance the turbulent effect of the coolant, thereby effectively improving the heat dissipation performance of the liquid cooling plate.

[0014] 2. In the present invention, the lower box and the upper cover are integrally formed by salt core die casting, which avoids the poor sealing problem that may be caused by traditional welding process, significantly improves the overall sealing performance and structural strength of the liquid cooling plate, and simplifies the production process and reduces manufacturing costs.

[0015] 3. The present invention sets a liquid guiding mechanism and utilizes multiple flow channels and multi-partition diversion structure design to enable the coolant to be evenly distributed and form multiple flow paths, effectively avoiding the flow dead zone problem that is prone to occur in traditional straight-through flow channels, ensuring that the coolant is in full contact with the heat dissipation surface, and improving the overall heat dissipation efficiency.

[0016] 4. The present invention provides a liquid guiding mechanism and provides spoiler ridges and surface textures on the surface of the partition to actively interfere with the flow of the coolant, thereby enhancing the turbulence effect, destroying the boundary layer thermal resistance, and significantly improving the heat transfer coefficient. It can achieve more efficient heat dissipation capabilities at the same flow rate and meet the cooling requirements of high-power battery packs.

[0017] 5. The present invention provides an auxiliary heat dissipation mechanism, monitors the battery pack temperature in real time through a patch sensor, and dynamically adjusts the coolant flow rate to achieve precise temperature control and avoid overcooling or overheating. At the same time, the heat dissipation cavity is combined with thermal conductive materials to quickly transfer battery heat to the coolant, significantly improving the heat dissipation response speed and energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 A three-dimensional diagram of the overall structure of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the liquid cooling heat dissipation mechanism of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the liquid guiding mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of some structures in the present invention;

[0023] Figure 5 Schematic diagram of the structure of the first partition in the present invention;

[0024] Figure 6 Schematic diagram of the structure of the auxiliary heat dissipation mechanism in the present invention;

[0025] Figure 7 Schematic diagram of the structure of the salt core model.

[0026] In the figure: 1. Lower box; 2. Upper cover; 3. Liquid cooling mechanism; 301. Liquid inlet pipe; 302. Liquid outlet pipe; 303. Cooling cavity; 304. Buffering boss; 4. Liquid guiding mechanism; 401. First partition; 402. Second partition; 403. Spoiler rib; 404. Surface texture; 405. First flow channel; 406. Second flow channel; 407. Third flow channel; 5. Auxiliary heat dissipation mechanism; 501. Heat dissipation cavity; 502. Mounting screw hole; 503. SMD sensor; 504. Thermal conductive material. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] The integrated liquid cooling plate in the existing technology has a single flow channel design, the coolant flow is uneven, and it is easy to form a dead zone of flow, resulting in poor local heat dissipation. In addition, it mostly adopts a fixed flow rate cooling, which cannot dynamically adjust the heat dissipation intensity according to the real-time temperature of the battery, which may lead to insufficient cooling or energy waste. In order to solve this technical defect in the existing technology, such as Figure 1-Figure 3 As shown, this embodiment proposes a multi-channel integrated salt core die-casting liquid cold plate, which can not only support the upper cover plate 2 to prevent deformation, but also enhance the turbulent effect of the coolant, and can effectively improve the heat dissipation performance of the liquid cold plate. Specifically, the liquid cold plate includes a lower box body 1 and an upper cover plate 2, and the lower box body 1 and the upper cover plate 2 are integrally formed by salt core die-casting. Salt core die-casting mainly includes mold preparation, alloy smelting, high-pressure die-casting, salt core removal and subsequent processing. The liquid cold plate made in this way does not require subsequent welding and has excellent overall sealing performance. The interior of the lower box body 1 is provided with a liquid cooling heat dissipation mechanism. 3 and a liquid guiding mechanism 4. An auxiliary heat dissipation mechanism 5 is provided on the outside of the lower box body 1. The auxiliary heat dissipation mechanism 5 is used to conduct heat to the inside of the liquid-cooled heat dissipation mechanism 3 for heat exchange with the coolant. The liquid guiding mechanism 4 is used to enhance the fluid disturbance in the liquid-cooled heat dissipation mechanism 3. During the heat dissipation process, the coolant will enter the liquid-cooled heat dissipation mechanism 3 under the action of the pump and circulate. During this process, the auxiliary heat dissipation mechanism 5 will conduct the heat of the equipment to the inside of the liquid cooling plate for heat exchange. At the same time, the liquid guiding mechanism 4 will interfere with the flow of the coolant, thereby improving the cooling efficiency.

[0030] Specifically, the liquid-cooling heat dissipation mechanism 3 includes a liquid inlet pipe 301 and a liquid outlet pipe 302 fixedly installed on one side of the lower box body 1. A cooling cavity 303 is opened inside the lower box body 1. A plurality of buffer bosses 304 for supporting the upper cover plate 2 are arranged inside the cooling cavity 303. The upper cover plate 2 is located above the cooling cavity 303, so that the cooling cavity 303 is in a closed environment. The liquid inlet pipe 301 and the liquid outlet pipe 302 are respectively connected to the cooling cavity 303. During the heat dissipation process, the coolant will enter the cooling cavity 303 from the liquid inlet pipe 301, flow through the cooling cavity 303, and then flow out through the liquid outlet pipe 302.

[0031] According to the above content, it can be seen that in the process of using the liquid cooling plate to dissipate heat and cool the battery pack of a new energy vehicle, the coolant will enter the cooling cavity 303 through the liquid inlet pipe 301 under the action of an external pump. Subsequently, the coolant will exchange heat with the battery pack during the flow in the cooling cavity 303, thereby achieving the effect of rapid heat dissipation of the battery pack.

[0032] After the heat exchange is completed, the coolant will flow back to the interior of the coolant storage tank through the liquid outlet pipe 302.

[0033] Moreover, when using salt core die casting to produce the liquid cooling plate, the mold preparation must be carried out first: design and assemble a mold containing the salt core, and the salt core is precisely positioned to form the internal structure of the liquid cooling plate; then alloy smelting is carried out: select suitable metal materials (such as aluminum alloy, copper alloy) for smelting, and prepare alloy liquid for die casting; then high-pressure die casting is carried out: the alloy liquid is injected into the mold, and the mold cavity is filled with the alloy liquid using high pressure, while the salt core maintains structural stability, so as to realize the integrated forming of the upper cover plate 2 and the lower box body 1; then the salt core is removed: after the die casting is cooled, the salt core is removed by dissolution or flushing to form the final liquid cooling plate structure; finally, subsequent processing is carried out: necessary cleaning, surface treatment and quality inspection are carried out to ensure that the product meets the design requirements.

[0034] This embodiment provides a liquid-cooled heat dissipation mechanism 3 and utilizes the mutual cooperation between the cooling cavity 303 and the buffer boss 304 to support the upper cover plate 2 to prevent deformation and enhance the turbulent effect of the coolant, thereby effectively improving the heat dissipation performance of the liquid-cooled plate. Moreover, in this embodiment, the lower box body 1 and the upper cover plate 2 are integrally formed by salt core die-casting, avoiding the poor sealing problem that may be caused by traditional welding processes, significantly improving the overall sealing performance and structural strength of the liquid-cooled plate, and at the same time simplifying the production process and reducing manufacturing costs.

[0035] Example 2

[0036] In order to ensure that the coolant is in full contact with the heat dissipation surface and improve the overall heat dissipation efficiency, based on the first embodiment, as shown in FIG. Figure 2-Figure 5As shown, this embodiment is provided with a liquid guiding mechanism 4. Specifically, the liquid guiding mechanism 4 includes a first partition 401 and a second partition 402 arranged inside the cooling cavity 303. The surfaces of the first partition 401 and the second partition 402 are respectively provided with a plurality of spoiler ridges 403. The inner side of the first partition 401 and the inner side of the second partition 402 are respectively provided with surface textures 404. A first flow channel 405 for the flow of coolant is formed between the first partition 401 and the second partition 402, a second flow channel 406 is formed between the first partition 401 and the inner wall of the cooling cavity 303, and a third flow channel 407 is formed between the second partition 402 and the inner wall of the cooling cavity 303. After the coolant enters the interior of the cooling cavity 303 from the liquid inlet pipe 301, it will flow inside the multiple flow channels and then flow out from the liquid outlet pipe 302. The spoiler ridges 403 and the surface texture 404 are used to enhance fluid disturbance and improve the heat transfer coefficient, which can improve the cooling effect of the liquid cooling plate to a certain extent.

[0037] According to the above content, after the coolant enters the cooling cavity 303 through the liquid inlet pipe 301, it will be divided into multiple streams under the diversion effect of multiple flow channels, which can effectively avoid flow dead zones and enhance the cooling effect.

[0038] Moreover, when the cooling liquid flows in the flow channel, the flow-disturbing ridges 403 and the surface texture 404 will disturb the cooling liquid, thereby increasing the heat transfer coefficient and further improving the cooling effect.

[0039] This embodiment provides a liquid guiding mechanism 4 and utilizes a flow channel and multi-partition diversion structure design to enable the coolant to be evenly distributed and form multiple flow paths, effectively avoiding the flow dead zone problem that is prone to occur in traditional straight-through flow channels, ensuring that the coolant is in full contact with the heat dissipation surface, and improving the overall heat dissipation efficiency; moreover, this embodiment provides a liquid guiding mechanism 4 and provides spoiler ridges 403 and surface textures 404 on the surface of the partition to actively interfere with the flow of the coolant, thereby enhancing the turbulent effect, destroying the boundary layer thermal resistance, and significantly improving the heat transfer coefficient. It can achieve more efficient heat dissipation capabilities at the same flow rate and meet the cooling requirements of high-power battery packs.

[0040] Example 3

[0041] In order to quickly transfer the battery heat to the coolant and improve the heat dissipation response speed and energy efficiency, based on the above embodiment, Figure 1 and Figure 6As shown, this embodiment is provided with an auxiliary heat dissipation mechanism 5. Specifically, the auxiliary heat dissipation mechanism 5 includes a heat dissipation cavity 501 opened on the outside of the lower box body 1, and a plurality of mounting screw holes 502 are opened on the lower box body 1. A patch sensor 503 is provided inside the heat dissipation cavity 501, and the surface of the heat dissipation cavity 501 is coated with a thermal conductive material 504. The heat generated by the battery pack will be quickly conducted to the inside of the cooling cavity 303 under the action of the thermal conductive material 504. The patch sensor 503 is used to detect the temperature of the battery pack surface. The output power of the coolant pump can be regulated by the patch sensor 503, so that the flow rate of the coolant can be dynamically adjusted according to the battery pack temperature.

[0042] According to the above content, during the heat dissipation cooling process, the thermal conductive material 504 (such as graphene, metal foam, etc.) will quickly conduct the heat on the new energy vehicle battery pack to the inside of the cooling cavity 303, thereby achieving rapid heat dissipation.

[0043] Moreover, the patch sensor 503 will measure the temperature of the battery pack surface in real time. At the same time, the output power of the coolant pump will automatically change according to the measured temperature data.

[0044] This embodiment provides an auxiliary heat dissipation mechanism 5, monitors the battery pack temperature in real time through a patch sensor 503, and dynamically adjusts the coolant flow rate to achieve precise temperature control and avoid overcooling or overheating. At the same time, the heat dissipation cavity 501 combined with the thermal conductive material 504 can quickly transfer the battery heat to the coolant, significantly improving the heat dissipation response speed and energy efficiency.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-channel integrated salt core die-cast liquid cooling plate, comprising a lower box (1) and an upper cover (2), characterized in that: The lower box (1) is provided with a liquid cooling heat dissipation mechanism (3) and a liquid guiding mechanism (4) inside, and an auxiliary heat dissipation mechanism (5) is provided outside the lower box (1). The auxiliary heat dissipation mechanism (5) is used to conduct heat to the inside of the liquid cooling heat dissipation mechanism (3) to exchange heat with the coolant, and the liquid guiding mechanism (4) is used to enhance fluid disturbance in the liquid cooling heat dissipation mechanism (3). The liquid cooling heat dissipation mechanism (3) comprises a liquid inlet pipe (301) and a liquid outlet pipe (302) fixedly mounted on one side of the lower box (1); a cooling cavity (303) is provided inside the lower box (1); and a plurality of buffer bosses (304) for supporting the upper cover plate (2) are provided inside the cooling cavity (303).

2. The multi-channel integrated salt core die-cast liquid cold plate according to claim 1, characterized in that: The lower box body (1) and the upper cover plate (2) are integrally formed by salt core die casting.

3. The multi-channel integrated salt core die-cast liquid cooling plate according to claim 1, characterized in that: The liquid inlet pipe (301) and the liquid outlet pipe (302) are respectively communicated with the cooling cavity (303).

4. The multi-channel integrated salt core die-cast liquid cooling plate according to claim 1, characterized in that: The liquid guiding mechanism (4) includes a first partition (401) and a second partition (402) arranged inside the cooling cavity (303); a first flow channel (405) for the flow of cooling liquid is formed between the first partition (401) and the second partition (402); a second flow channel (406) is formed between the first partition (401) and the inner wall of the cooling cavity (303); and a third flow channel (407) is formed between the second partition (402) and the inner wall of the cooling cavity (303).

5. The multi-channel integrated salt core die-cast liquid cooling plate according to claim 4, characterized in that: The surface of the first partition (401) and the surface of the second partition (402) are respectively provided with a plurality of flow-disrupting ridges (403), and the inner side of the first partition (401) and the inner side of the second partition (402) are respectively provided with surface textures (404). The flow-disrupting ridges (403) and the surface textures (404) are used to enhance fluid disturbance and improve the heat transfer coefficient.

6. The multi-channel integrated salt core die-cast liquid cooling plate according to claim 1, characterized in that: The auxiliary heat dissipation mechanism (5) comprises a heat dissipation cavity (501) provided on the outside of the lower box (1); a plurality of mounting screw holes (502) are provided on the lower box (1); a patch sensor (503) is provided inside the heat dissipation cavity (501); and a heat conductive material (504) is applied to the surface of the heat dissipation cavity (501).

7. The multi-channel integrated salt core die-cast liquid cooling plate according to claim 6, characterized in that: The patch sensor (503) is used to detect the temperature of the battery pack surface, and the output power of the coolant pump can be regulated by the patch sensor (503).

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