Uniform-temperature liquid cooling plate

Abstract

The utility model discloses a uniform temperature liquid cooling plate, which comprises a liquid cooling plate body, a fin assembly, an inlet nozzle and an outlet nozzle, the fin assembly is arranged in the liquid cooling plate body, the inlet nozzle and the outlet nozzle are respectively arranged at the left end and the right end of the liquid cooling plate body, and the fin assembly is respectively communicated with the inlet nozzle and the outlet nozzle. The cold plate has the beneficial effects that the heat conduction resistance of the cold plate in the heat transfer process can be reduced by utilizing the heat transfer principle of the uniform-temperature cavity, the fin efficiency in the cold plate is improved, the efficient heat dissipation of the battery cells is realized, the temperature difference between the battery cells is reduced, the temperature uniformity of the battery pack is better, the service life of the battery pack is prolonged, the overall structure is reasonable, and the design is easy and ingenious.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery cooling and relates to a temperature-equalizing liquid cooling plate. Background Art

[0002] With the vigorous development and popularization of new energy vehicles, the charging speed, energy density, endurance, safety and other issues of new energy vehicles have also attracted much attention. Accelerating charging speed, increasing energy density, improving endurance and vehicle safety often require more efficient thermal management solutions to support. The existing mainstream thermal management solution is heat exchange through liquid cooling.

[0003] Liquid cooling is the process of cooling liquid through a channel, where the cooling liquid exchanges heat with the outside to achieve cooling. In the prior art, liquid cooling tubes are spirally arranged and distributed throughout the area to be cooled. The cooling liquid enters from the inlet end and flows out from the outlet end. Since the cooling liquid absorbs heat during the flow, the temperature at the outlet end is higher than the temperature at the inlet end, which leads to a large temperature difference between the battery cell near the inlet end and the outlet end of the liquid cooling tube, and the overall temperature uniformity of the battery cell is poor.

[0004] Chinese patent CN219350398U discloses a temperature-averaging liquid cooling plate, which is characterized in that it comprises a plate body, a liquid cooling pipe arranged in the plate body, and a liquid inlet pipe and a liquid outlet pipe connected to the liquid cooling pipe. A plurality of the liquid cooling pipes are independently arranged in the plate body and are respectively connected to the liquid inlet pipe and the liquid outlet pipe, which solves the problem that the liquid cooling pipes are independent of each other and are independently connected to the liquid inlet pipe and the liquid outlet pipe, which can effectively reduce the temperature difference between the head and tail ends of the liquid cooling pipe; avoid the liquid cooling pipes being connected head to tail to extend the flow length of the coolant, and the head of the liquid cooling pipe The temperature difference between the two ends of the tail is too large, which leads to a large temperature difference between different areas of the board, poor overall temperature uniformity of the battery cell, and reduced controllability of the liquid cooling plate over the battery cell temperature; the liquid inlet and outlet pipes between two adjacent liquid cooling tubes are staggered so that the high-temperature section of the upper liquid cooling tube heats the low-temperature section of the lower liquid cooling tube, and the low-temperature section of the lower liquid cooling tube cools the high-temperature section of the upper liquid cooling tube, thereby achieving sufficient heat exchange between adjacent liquid cooling tubes, and then evenly distributing the temperature of the entire board, ensuring that when the board cools the battery cell, the overall temperature of the battery cell also tends to be evenly distributed.

[0005] Currently, battery packs mainly use liquid cooling plates for heat dissipation, but traditional liquid cooling plate heat dissipation technology will cause the temperature of the battery cells near the water inlet of the cold plate to be low, while the temperature of the battery cells near the water outlet of the cold plate will be high, which will cause uneven heat dissipation of the battery cells, increase the temperature difference between the battery cells, and poor temperature uniformity, affecting battery performance and life. Summary of the invention

[0006] In view of the above situation, to overcome the defects of the prior art, the purpose of the present utility model is to provide an isothermal liquid cooling plate. By utilizing the heat transfer principle of the isothermal cavity, the thermal conductivity resistance of the cooling plate during the heat transfer process can be reduced, the fin efficiency in the cooling plate can be improved, efficient heat dissipation of the battery cells can be achieved, the temperature difference between the battery cells can be reduced, the temperature uniformity of the battery pack can be better, the service life of the battery pack can be extended, and the overall structure is reasonable and easy to design ingeniously.

[0007] To achieve the above purpose, the present utility model provides the following technical solutions:

[0008] An isothermal liquid cooling plate, comprising a liquid cooling plate body, a fin assembly, an inlet nozzle, and an outlet nozzle. The fin assembly is arranged inside the liquid cooling plate body. The inlet nozzle and the outlet nozzle are respectively arranged at the left and right ends of the liquid cooling plate body, and the fin assembly is respectively communicated with the inlet nozzle and the outlet nozzle.

[0009] Furthermore, the liquid cooling plate body includes a bottom plate, a cover plate, and a frame. A plurality of fin grooves are arranged on the bottom plate, the fin assembly is embedded in the fin grooves on the bottom plate, the frame seamlessly docks and fastens the fin assembly on the bottom plate, a cover plate is arranged on the top of the fin assembly, the cover plate seamlessly docks and fastens the fin assembly on the frame, a cavity is arranged inside the cover plate, the inlet nozzle is communicated with one side of the fin grooves on the bottom plate, and the outlet nozzle is communicated with the other side of the fin grooves on the bottom plate.

[0010] Furthermore, inlet holes and outlet holes are respectively arranged at both ends of the frame. One end of the inlet nozzle is embedded in the inlet hole at one end of the frame and is communicated with the fin assembly, and the other end of the inlet nozzle extends outside the frame. One end of the outlet nozzle is embedded in the outlet hole at the other end of the frame and is communicated with the fin assembly, and the other end of the outlet nozzle extends outside the frame.

[0011] Furthermore, the fin assembly includes a fin body and a wick. A plurality of holes and grooves are arranged on the fin body. The holes and grooves on the fin body are communicated with the cavity inside the cover plate to jointly form an isothermal cavity. The isothermal cavity is filled with a wick, and the bottom of the fin body is embedded in the fin grooves on the bottom plate.

[0012] Furthermore, the bottom of the fin body is embedded in the fin grooves on the bottom plate and forms a flow channel. The inlet nozzle and the outlet nozzle are respectively connected to the flow channel.

[0013] Furthermore, the isothermal cavity is also filled with a liquid working medium.

[0014] Furthermore, the wick is made of sintered powder or microchannels or a metal mesh structure.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: By utilizing the heat transfer principle of the temperature equalizing cavity, the thermal resistance of the cold plate during heat transfer can be reduced, the fin efficiency in the cold plate can be improved, efficient heat dissipation of the battery cells can be achieved, the temperature difference between the battery cells can be reduced, the temperature uniformity of the battery pack can be made better, the service life of the battery pack can be extended, the overall structure is reasonable, and it is easy to design ingeniously. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the temperature equalizing liquid cooling plate of the present utility model;

[0017] Figure 2 It is an exploded structural diagram of the temperature equalizing liquid cooling plate of the present utility model;

[0018] Figure 3 It is a schematic structural diagram of the fin assembly of the present utility model;

[0019] Figure 4 It is an exploded structural diagram of the fin assembly of the present utility model;

[0020] Figure 5 It is a schematic structural diagram of the flow channel formed by the combination of the fin assembly, the bottom plate and the cover plate of the present utility model;

[0021] Figure 6 It is a schematic bottom view structural diagram of the cover plate of the present utility model;

[0022] Figure 7 It is a schematic cross-sectional structural diagram of the cover plate and the fin body of the present utility model;

[0023] Reference numerals: 1, liquid cooling plate body; 11, bottom plate; 110, fin groove; 12, cover plate; 120, cavity; 13, frame; 130, inlet hole; 131, outlet hole; 2, fin assembly; 21, fin body; 210, hole groove; 22, liquid absorption core; 3, inlet nozzle; 4, outlet nozzle; 5, flow channel; 6, temperature equalizing cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will describe in detail a plastic encapsulated connector for new energy vehicles provided by the present utility model in conjunction with the drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; and the drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present utility model.

[0025] It should be noted that in the specification, the mention of "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicates that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, implementing such feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0026] Generally, terms can be understood, at least in part, from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood to not necessarily be intended to convey a set of exclusive factors, but rather, at least in part depending on the context, to allow for the existence of other factors that may not be explicitly described.

[0027] It can be understood that the meanings of "on", "above", and "over" in the present disclosure should be construed in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0028] Furthermore, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptive terms used herein may be similarly interpreted accordingly.

[0029] Refer to Figures 1-7 As shown, a temperature - equalizing liquid - cooling plate includes a liquid - cooling plate body 1, a fin assembly 2, an inlet nozzle 3, and an outlet nozzle 4. A fin assembly 2 is disposed inside the liquid - cooling plate body 1. The left and right ends of the liquid - cooling plate body 1 are respectively provided with an inlet nozzle 3 and an outlet nozzle 4. The fin assembly 2 is respectively in communication with the inlet nozzle 3 and the outlet nozzle 4.

[0030] Preferably, the liquid cooling plate body 1 includes a bottom plate 11, a cover plate 12, and a frame 13. A plurality of fin grooves 110 are provided on the bottom plate 11. The fin assembly 2 is embedded in the fin grooves 110 on the bottom plate 11. The frame 13 seamlessly docks and fastens the fin assembly 2 on the bottom plate 11. A cover plate 12 is provided on the top of the fin assembly 2. The cover plate 12 seamlessly docks and fastens the fin assembly 2 on the frame 13. A cavity 120 is provided inside the cover plate 12. The inlet nozzle 3 is connected to one side of the fin grooves 110 on the bottom plate 11, and the outlet nozzle 4 is connected to the other side of the fin grooves 110 on the bottom plate 11.

[0031] Preferably, inlet holes 130 and outlet holes 131 are respectively provided at both ends of the frame 13. One end of the inlet nozzle 3 is embedded in the inlet hole 130 at one end of the frame 13 and is connected to the fin assembly 2. The other end of the inlet nozzle 3 extends outside the frame 13. One end of the outlet nozzle 4 is embedded in the outlet hole 131 at the other end of the frame 13 and is connected to the fin assembly 2. The other end of the outlet nozzle 4 extends outside the frame 13.

[0032] Preferably, the fin assembly 2 includes a fin body 21 and a wick 22. A plurality of holes 210 are provided on the fin body 21. The holes 210 on the fin body 21 are connected to the cavity 120 inside the cover plate 12 to jointly form a temperature equalizing chamber 6. The temperature equalizing chamber 6 is filled with the wick 22 inside. The bottom of the fin body 21 is embedded in the fin grooves 110 on the bottom plate 11.

[0033] Preferably, the bottom of the fin body 21 is embedded in the fin grooves 110 on the bottom plate 11 and forms a flow channel 5. The inlet nozzle 3 and the outlet nozzle 4 are respectively connected to the flow channel 5.

[0034] Preferably, a liquid working medium is also filled inside the temperature equalizing chamber 6.

[0035] Preferably, the wick 22 is made of sintered powder or microchannels or a metal mesh structure.

[0036] The working principle is as follows: When using the liquid cooling plate body to dissipate heat from the battery pack, the battery cell contacts the cover plate of the liquid cooling plate body. Relying on the liquid working medium in the temperature equalizing cavity connected between the cover plate of the liquid cooling plate body and the fin body to evaporate and absorb heat, the heat generated by the battery cell is quickly transferred to the coolant flowing through the flow channel of the liquid cooling plate body, and the temperature difference on the cover plate is reduced by relying on the gas flow generated by the evaporation of the liquid working medium. Finally, the heat in the battery cell is taken away by the coolant. By using the heat transfer principle of the temperature equalizing cavity, the thermal conduction resistance of the cold plate during the heat transfer process can be reduced, the fin efficiency in the cold plate can be improved, efficient heat dissipation of the battery cell can be achieved, the temperature difference between the battery cells can be reduced, the temperature uniformity of the battery pack can be better, the service life of the battery pack can be extended, the overall structure is reasonable, and it is easy to be ingeniously designed.

[0037] According to the disclosure and teachings of the above specification, those skilled in the art of the present utility model can also make appropriate changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims

1. A temperature-uniform liquid cooling plate, characterized in that: The liquid cooling plate body comprises a liquid cooling plate body, a fin assembly, an inlet nozzle and an outlet nozzle, wherein a fin assembly is arranged inside the liquid cooling plate body, an inlet nozzle and an outlet nozzle are arranged at the left and right ends of the liquid cooling plate body respectively, and the fin assembly is connected with the inlet nozzle and the outlet nozzle respectively; the liquid cooling plate body comprises a bottom plate, a cover plate and a frame, a plurality of fin slots are arranged on the bottom plate, the fin assembly is embedded in the fin slots on the bottom plate, the frame seamlessly butts and fastens the fin assembly on the bottom plate, a cover plate is arranged on the top of the fin assembly, the cover plate seamlessly butts and fastens the fin assembly on the frame, a cavity is arranged inside the cover plate, the inlet nozzle is connected with one side of the fin slot on the bottom plate, the outlet nozzle is connected with the bottom plate The other side of the fin groove on the plate is connected; an inlet hole and an outlet hole are respectively provided at both ends of the frame, one end of the inlet nozzle is embedded in the inlet hole at one end of the frame and is connected to the fin assembly, and the other end of the inlet nozzle extends to the outside of the frame, one end of the outlet nozzle is embedded in the outlet hole at the other end of the frame and is connected to the fin assembly, and the other end of the outlet nozzle extends to the outside of the frame; the fin assembly includes a fin body and a liquid absorbent core, a plurality of holes and grooves are provided on the fin body, the holes and grooves of the fin body are connected with the cavity inside the cover plate to form a temperature-averaging cavity together, the temperature-averaging cavity is filled with a liquid absorbent core, and the bottom of the fin body is embedded in the fin groove on the bottom plate.

2. The temperature-uniform liquid cooling plate according to claim 1, characterized in that: The bottom of the fin body is embedded in the fin groove on the bottom plate to form a flow channel, and the inlet nozzle and the outlet nozzle are respectively connected to the flow channel.

3. The temperature-uniform liquid cooling plate according to claim 1, characterized in that: The temperature-averaging chamber is also filled with liquid working medium.

4. The temperature-uniform liquid cooling plate according to claim 1, characterized in that: The liquid wick is made of a structure of sintered powder, micro-channels and metal mesh.

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