Immersed liquid cooling heat exchange device

Abstract

The utility model relates to an immersed liquid cooling heat exchange device which is used for being immersed in a container for heat exchange and comprises a runner plate, a flat plate and fins which are sequentially connected from bottom to top. Part of the runner plate is sunken in the direction away from the flat plate to form a runner structure for circulating cooling liquid; a plurality of fins are arranged on one surface, far away from the runner plate, of the flat plate, and are arranged at intervals along the length direction of the flat plate. According to the liquid cooling plate, the heat exchange area can be increased through the arranged fins, the fins are arranged at intervals in the length direction of the flat plate, heat exchange between cooling liquid and the container is more sufficient, the larger heat exchange contact area is achieved, and therefore the heat exchange efficiency is greatly improved, and compared with a traditional liquid cooling plate, the higher heat exchange efficiency is achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of heat dissipation technology, and in particular to an immersion-type liquid-cooling heat exchange device. Background Art

[0002] With the global energy transition and the rapid development of renewable energy, energy storage technology has become a key enabler for efficient energy utilization and stable grid operation. In large-scale energy storage systems, battery packs generate significant heat during rapid charging and discharging, placing extremely high demands on heat dissipation technology. Traditional air-cooling solutions are no longer able to meet the cooling requirements of current high-performance energy storage systems. Therefore, liquid cooling technology, particularly immersion cooling, has become a research hotspot in the field of energy storage system heat dissipation.

[0003] A search revealed that in the prior art, for example, patent CN202410538329.7 discloses an immersion-type liquid-cooled energy storage battery pack, comprising a housing, battery cells, a liquid-cooling plate, and a first guide bar; the liquid-cooling plate comprises an upper liquid-cooling plate located at the upper end of the housing and a lower liquid-cooling plate located at the lower end of the housing, a sealed liquid-cooling space is formed between the inner side of the housing and the liquid-cooling plate, and the battery cells are located within the liquid-cooling space; an inner flow channel for the flow of coolant is provided within the liquid-cooling plate, and both the upper and lower liquid-cooling plates are provided with through holes connecting the inner flow channel and the outside of the liquid-cooling plate, and the first guide bar is installed on the outside of the battery cells. The above-mentioned immersion-type liquid-cooled energy storage battery pack also has the following defects in actual applications:

[0004] When the liquid cooling plate of the above structure performs heat exchange with the battery pack, the coolant only flows through the liquid cooling plate, which results in a small heat conduction area and poor heat exchange effect; and the heat exchange is performed by installing the first guide bar on the outside of the battery cell, which increases the complexity of the heat transfer path and easily leads to an increase in thermal resistance, thereby affecting the efficiency of heat exchange and the cooling effect. Utility Model Content

[0005] To address the aforementioned problems of the prior art, the present disclosure provides an immersion-type liquid-cooled heat exchanger. This device utilizes fins to increase the heat exchange area. The fins are spaced along the length of the plate, allowing for more efficient heat exchange between the coolant and the container, thereby improving heat dissipation efficiency. Compared to traditional liquid-cooled plates, this device offers higher heat exchange efficiency.

[0006] The immersion type liquid cooling heat exchange device disclosed in the present invention is used for immersing in a container for heat exchange, and includes a flow channel plate, a flat plate and fins connected in sequence from bottom to top;

[0007] The flow channel plate portion is recessed in a direction away from the flat plate to form a flow channel structure for circulating the coolant;

[0008] A plurality of fins are provided on a surface of the flat plate away from the flow channel plate, and the plurality of fins are arranged at intervals along the length direction of the flat plate.

[0009] Preferably, the flow channel structure includes a first flow channel and a second flow channel, and the first flow channel and the second flow channel are both serpentine flow channels in which the flow direction of the liquid is alternately switched;

[0010] One end of the first flow channel is connected to one end of the second flow channel, the other end of the first flow channel is a liquid inlet, the other end of the second flow channel is a liquid outlet, and the liquid inlet and the liquid outlet are located on the same side;

[0011] The first flow channels and the second flow channels are alternately distributed in a direction parallel to the fins, so that the flow channel structure is similar to a meandering flow channel.

[0012] Preferably, the minimum edge spacing between the first flow channel and the second flow channel is S, which satisfies 15 mm < S < 80 mm.

[0013] Preferably, the cross section of the flow channel structure in a direction perpendicular to the liquid flow direction is semicircular.

[0014] Preferably, the semicircular cross-section diameter of the flow channel structure is D, satisfying 0<D<9mm;

[0015] The thickness of the flow channel wall of the flow channel structure is H, which satisfies 1mm<H<1.6mm.

[0016] Preferably, the cross section of the fin is L-shaped.

[0017] Preferably, the fins are connected to the flow channel plate and the flat plate via connectors;

[0018] The flow channel plate and the flat plate both have connecting holes adapted to the connecting pieces, and the connecting holes are arranged to avoid the flow channel structure. The connecting pieces are passed through the connecting holes, so that the flow channel plate, the flat plate and the fins are firmly connected.

[0019] Preferably, a plurality of the fins are arranged on the flat plate at equal intervals.

[0020] Preferably, the distance between adjacent fins is 40 mm to 80 mm.

[0021] Preferably, an inlet connector is provided at a position of the flat plate corresponding to the liquid inlet end, and the inlet connector is connected to the liquid inlet end;

[0022] An outlet joint is provided at a position of the flat plate corresponding to the liquid outlet end, and the outlet joint is communicated with the liquid outlet end.

[0023] The advantages of the immersion liquid cooling heat exchange device disclosed in the present invention are:

[0024] The present invention discloses an immersion-type liquid-cooled heat exchange device for immersing in a container for heat exchange, comprising a flow channel plate, a flat plate, and fins connected in sequence from bottom to top; the flow channel plate is partially recessed away from the flat plate to form a flow channel structure for circulating the coolant; a plurality of fins are provided on a side of the flat plate away from the flow channel plate, and the plurality of fins are arranged at intervals along the length of the flat plate. The fins can increase the heat exchange area, and the plurality of fins are arranged at intervals along the length of the flat plate, so that the heat exchange between the coolant and the container is more sufficient, with a larger heat exchange contact area, thereby greatly improving the heat exchange efficiency and having a higher heat exchange efficiency than traditional liquid cooling plates; and the device is used in a direct cooling solution. When cooling is required, the device can act as an evaporator, and the coolant vaporizes and absorbs heat in the flow channel structure of the device. When heating is required, the device can act as a condenser, and the coolant liquefies and releases heat in the flow channel structure of the device, so that the device can flexibly adapt to different thermal management requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an immersion liquid cooling heat exchange device disclosed in the present invention;

[0026] Figure 2 for Figure 1 Exploded view of;

[0027] Figure 3 This is a front view of a flow channel plate of an immersion liquid cooling heat exchange device disclosed in the present invention;

[0028] Figure 4 This is a schematic diagram of the fin structure of an immersion liquid cooling heat exchange device described in the present invention.

[0029] Description of reference numerals:

[0030] 10-flow channel plate; 101-flow channel structure; 1011-first flow channel; 1012-second flow channel;

[0031] 20-plate; 201-inlet connector; 202-outlet connector;

[0032] 30-fins;

[0033] 40-Connecting parts. DETAILED DESCRIPTION

[0034] like Figure 1 - Figure 4 As shown, the immersion type liquid cooling heat exchange device disclosed in the present disclosure is used for immersing in a container for heat exchange, and includes a flow channel plate 10, a flat plate 20 and a fin 30 connected in sequence from bottom to top;

[0035] The flow channel plate 10 is partially recessed in a direction away from the flat plate 20 to form a flow channel structure 101 for circulating the coolant. The flow channel plate 10 is formed into the flow channel structure 101 by stamping.

[0036] A plurality of fins 30 are provided on a surface of the flat plate 20 away from the flow channel plate 10 , and the plurality of fins 30 are arranged at intervals along the length direction of the flat plate 20 ; that is, the fins 30 are perpendicular to the length direction of the flat plate 20 ;

[0037] The fins 30 are arranged to increase the heat exchange area. The fins 30 are arranged at intervals along the length of the flat plate 20, so that the heat exchange between the coolant and the container is more sufficient and has a larger heat exchange contact area, thereby greatly improving the heat exchange efficiency. Compared with the traditional liquid cooling plate, the heat exchange efficiency is higher. In addition, the device is used for a direct cooling solution. When cooling is required, the device can act as an evaporator, and the coolant vaporizes and absorbs heat in the flow channel structure 101 of the device. When heating is required, the device can act as a condenser, and the coolant liquefies and releases heat in the flow channel structure 101 of the device, so that the device can flexibly adapt to different thermal management requirements.

[0038] Furthermore, in this embodiment, the flow channel structure 101 includes a first flow channel 1011 and a second flow channel 1012 , and the first flow channel 1011 and the second flow channel 1012 are both serpentine flow channels in which the flow direction of the liquid is alternately switched;

[0039] One end of the first flow channel 1011 is connected to one end of the second flow channel 1012. The other end of the first flow channel 1011 is a liquid inlet, and the other end of the second flow channel 1012 is a liquid outlet. The liquid inlet and the liquid outlet are located on the same side. The first flow channel 1011 and the second flow channel 1012 form a series structure.

[0040] The first flow channel 1011 and the second flow channel 1012 are alternately distributed in a direction parallel to the fin 30, so that the flow channel structure 101 forms a meander-shaped flow channel.

[0041] The first flow channel 1011 and the second flow channel 1012 are main flow channels along the length direction of the plate. The flow direction of the liquid in the main flow channel is the same as the length direction of the plate 20. The first flow channel 1011 and the second flow channel 1012 are both serpentine flow channels. Figure 3 As shown, the first flow channel 1011 and the second flow channel 1012 have the same serpentine route, and the second flow channel 1012 is arranged on the inner side of the first flow channel 1011, so that the flow channel structure 101 forms a flow channel similar to a meander. In addition, along the direction parallel to the fins 30, that is, along the width direction of the flat plate 20, the main flow channel of the first flow channel 1011 and the main flow channel of the second flow channel 1012 are alternately distributed in sequence. This type of flow channel structure can improve the temperature uniformity of the entire device.

[0042] The coolant flows into the first flow channel 1011 from the liquid inlet end, then flows from the first flow channel 1011 to the second flow channel 1012, and then flows out from the liquid outlet end through the second flow channel 1012; the liquid inlet end and the liquid outlet end are located on the same side, so that the coolant flows from the side of the flow channel plate 10 with the liquid inlet end along the first flow channel 1011 to the other side, and then flows along the second flow channel 1012 to the side of the flow channel plate 10 with the liquid outlet end, so that the coolant can circulate in most areas of the flow channel plate 10, which is more conducive to the uniform distribution of the coolant, can increase the effective area of ​​the device for heat exchange, and then cooperate with the fins 30 to greatly increase the heat exchange area and improve the heat exchange efficiency.

[0043] Furthermore, in this embodiment, the minimum edge spacing between the first flow channel 1011 and the second flow channel 1012 is S, which satisfies 15 mm < S < 80 mm; 40 mm is optimally selected.

[0044] Furthermore, in this embodiment, the cross-section of the flow channel structure 101 in the direction perpendicular to the liquid flow is semicircular; this shape of the flow channel structure 101 helps to reduce the turbulence and eddy currents of the liquid in the flow channel, because the semicircle can provide a smoother transition and fewer fluid separation points than other shapes (such as a rectangle or a triangle), and the semicircular structure has better mechanical stability, especially when under pressure, it can more effectively disperse stress and reduce the risk of deformation or rupture caused by fluid pressure.

[0045] Furthermore, in this embodiment, the semicircular cross-sectional diameter of the flow channel structure 101 is D, which satisfies 0<D<9mm. Since the flow channel structure 101 needs to withstand a high pressure, the semicircular cross-sectional diameter of the flow channel structure 101 should be less than 9mm, and 5mm is optimal.

[0046] The thickness of the flow channel wall of the flow channel structure 101 is H, which satisfies 1mm<H<1.6mm; the optimal selection is 1.3mm. The flow channel structure 101 is recessed in the direction away from the flat plate 20, so that the flow channel structure 101 protrudes on the flow channel plate 10 in the direction away from the flat plate 20 to form the flow channel wall of the flow channel structure 101. Therefore, in order to meet the required pressure, the range of the flow channel wall thickness H is selected to be: 1mm<H<1.6mm.

[0047] Furthermore, in this embodiment, the cross-section of the fin 30 is "L"-shaped; the "L"-shaped fin is formed by bending the plate, and the "L"-shaped fin 30 has a wide side and a narrow side, the narrow side is parallel to the flat plate 20 and connected to the flat plate 20, and the wide side is perpendicular to the flat plate.

[0048] Furthermore, in this embodiment, the fin 30 is connected to the flow channel plate 10 and the flat plate 20 through a connecting member 40; the connecting member 40 can be a rivet;

[0049] Both the flow channel plate 10 and the flat plate 20 have connecting holes adapted to the connecting piece 40, and the connecting holes are arranged to avoid the flow channel structure 101, and the connecting piece 40 is passed through the connecting holes, so that the flow channel plate 10, the flat plate 20 and the fin 30 are fastened together; that is, the rivets fasten the flow channel plate 10, the flat plate 20 and the fin 30 together. In order to further consolidate the connection, the flow channel plate 10, the flat plate 20 and the fin 30 can be brazed as a whole, so that the connection between the flow channel plate 10, the flat plate 20 and the fin 30 is further fixed; brazing refers to a method of using a metal material with a lower melting point than the base material as a brazing material, heating the weldment and the brazing material to a temperature higher than the melting point of the brazing material but lower than the melting point of the base material, and using the liquid brazing material to wet the base material, fill the joint gap and realize the connection of the weldment. The surface quality of the connected metal will not be damaged during the brazing connection process, and the appearance and performance of the original parts can be maintained, with high strength and durability.

[0050] Furthermore, in this embodiment, a plurality of fins 30 are arranged on the flat plate 20 at equal intervals. The equal intervals of the fins 30 can ensure more uniform heat exchange while meeting the heat exchange efficiency.

[0051] Furthermore, in this embodiment, the spacing between adjacent fins 30 is 40 mm to 80 mm; 60 mm is optimally selected, and the spacing is selected specifically according to the heat dissipation requirements. The number of fins 30 is selected appropriately based on the selected plate length and the spacing between adjacent fins 30.

[0052] Furthermore, in this embodiment, an inlet connector 201 is provided at a position corresponding to the liquid inlet end of the flat plate 20, and the inlet connector 201 is connected to the liquid inlet end;

[0053] An outlet connector 202 is provided at a position corresponding to the liquid outlet end of the flat plate 20, and the outlet connector 202 is connected to the liquid outlet end;

[0054] The inlet connector 201 and the outlet connector 202 are vertically arranged on the flat plate 20. The inlet connector 201 is used to flow the coolant into the liquid inlet end, so that the coolant can flow from the liquid inlet end into the first flow channel 1011. The coolant in the first flow channel 1011 flows to the second flow channel 1012, and then flows out from the liquid outlet end along the outlet connector 202.

[0055] The inlet joint 201 and the outlet joint 202 are both connected to the plate 20 by brazing.

[0056] In the description of the present disclosure, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present disclosure.

[0057] Those skilled in the art can make various other corresponding changes and deformations based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of this disclosure.

Claims

1. An immersion type liquid cooling heat exchange device, used for immersing in a container for heat exchange, characterized in that: It comprises a flow channel plate (10), a flat plate (20) and fins (30) connected in sequence from bottom to top; The flow channel plate (10) is partially recessed in a direction away from the flat plate (20) to form a flow channel structure (101) for circulating the cooling liquid; A plurality of fins (30) are provided on a surface of the flat plate (20) away from the flow channel plate (10), and the plurality of fins (30) are arranged at intervals along the length direction of the flat plate (20).

2. The immersion liquid cooling heat exchange device according to claim 1, characterized in that: The flow channel structure (101) comprises a first flow channel (1011) and a second flow channel (1012), wherein the first flow channel (1011) and the second flow channel (1012) are both serpentine flow channels in which the flow directions of liquids are alternately switched; One end of the first flow channel (1011) is connected to one end of the second flow channel (1012), the other end of the first flow channel (1011) is a liquid inlet, the other end of the second flow channel (1012) is a liquid outlet, and the liquid inlet and the liquid outlet are located on the same side; The first flow channel (1011) and the second flow channel (1012) are alternately distributed in a direction parallel to the fin (30), so that the flow channel structure (101) forms a meander-shaped flow channel.

3. The immersion liquid cooling heat exchange device according to claim 2, characterized in that: The minimum edge spacing between the first flow channel (1011) and the second flow channel (1012) is S, which satisfies 15mm<S<80mm.

4. The immersion liquid cooling heat exchange device according to claim 1, characterized in that: The cross section of the flow channel structure (101) in a direction perpendicular to the liquid flow direction is semicircular.

5. The immersion liquid cooling heat exchange device according to claim 4, characterized in that: The semicircular cross-section diameter of the flow channel structure (101) is D, which satisfies 0<D<9mm; The thickness of the flow channel wall of the flow channel structure (101) is H, which satisfies 1mm<H<1.6mm.

6. The immersion liquid cooling heat exchange device according to claim 1, characterized in that: The cross section of the fin (30) is L-shaped.

7. The immersion liquid cooling heat exchange device according to claim 1, characterized in that: The fin (30) is connected to the flow channel plate (10) and the flat plate (20) via a connecting piece (40); The flow channel plate (10) and the flat plate (20) both have connection holes adapted to the connection piece (40), and the connection holes are arranged to avoid the flow channel structure (101). The connection piece (40) is passed through the connection holes, so that the flow channel plate (10), the flat plate (20) and the fin (30) are firmly connected.

8. The immersion liquid cooling heat exchange device according to claim 1, characterized in that: A plurality of fins (30) are arranged on the flat plate (20) at equal intervals.

9. The immersion liquid cooling heat exchange device according to claim 8, characterized in that: The distance between adjacent fins (30) is 40 mm to 80 mm.

10. The immersion liquid cooling heat exchange device according to claim 2, characterized in that: An inlet joint (201) is provided on the flat plate (20) at a position corresponding to the liquid inlet end, and the inlet joint (201) is communicated with the liquid inlet end; An outlet joint (202) is provided at a position of the flat plate (20) corresponding to the liquid outlet end, and the outlet joint (202) is communicated with the liquid outlet end.

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