Double-conveying-mode refrigerant direct cooling plate capable of preventing air blockage

Abstract

The utility model discloses an anti-air-blocking double-conveying-mode refrigerant direct cooling plate, and relates to the field of new energy, the direct cooling plate comprises a plurality of flow channels, and at least one attachment channel is arranged between every two adjacent flow channels; a plurality of capillary channels are formed in the inner wall face of the flow channel in a concave mode, and wall face conveying is achieved through the capillary channels. According to the refrigerant direct cooling plate, by optimizing the flow channel design, uniform distribution of refrigerants in the direct cooling plate is achieved, a double-conveying mode is utilized, and therefore the air blocking phenomenon is effectively prevented, and the heat exchange efficiency and the temperature control capacity of the direct cooling plate are further improved.

Description

Technical Field

[0001] The present application relates to the field of new energy, and particularly to a refrigerant direct cooling plate with a double delivery mode for preventing air plugs. Background Art

[0002] In the current energy storage and power battery fields, heat dissipation and temperature control issues are particularly crucial, especially in high-power output application scenarios. High-power batteries generate a large amount of heat during operation. If the heat is not dissipated in a timely and effective manner, it may cause the battery temperature to be too high, affecting its performance and service life, and even leading to safety problems. To solve these problems, liquid cooling plate technology has been widely used. These liquid cooling plates usually use water or other liquid heat transfer media to absorb and carry away heat through the circulating flow of the liquid within the battery module. However, as energy storage and power battery technologies develop towards higher power and higher energy density, the heat transfer efficiency of traditional liquid cooling plates has become difficult to meet the requirements of some high-demand application scenarios. Especially when dealing with the high heat generation of high-power batteries, their limitations have become increasingly prominent.

[0003] Specifically, when traditional liquid cooling plates handle the high heat load of high-power batteries, due to their limited heat transfer efficiency, it is often difficult to maintain the battery temperature within a safe and stable range. This unstable temperature control not only reduces the performance of the battery but also shortens its lifespan. In severe cases, it may even lead to safety problems such as thermal runaway. To improve the heat dissipation efficiency, new two-phase gas-liquid heat transfer technologies have gradually attracted attention. This technology utilizes the phase change that occurs during the heat transfer process of the refrigerant, that is, when the refrigerant changes from a liquid state to a gaseous state, it can quickly absorb a large amount of heat, thereby achieving a more efficient heat transfer effect.

[0004] However, in practical applications, the refrigerant heat transfer technology is not without challenges. The most prominent problem is the air plug phenomenon. When the refrigerant vaporizes within the heat exchange plate channels, the generated gas may form air plugs within the channels, hindering the further flow of the refrigerant. This air plug phenomenon not only seriously affects the heat transfer efficiency but also may cause the battery temperature to get out of control, posing potential safety hazards. The current liquid cooling plate structure design is unable to effectively avoid or solve the air plug phenomenon when dealing with this problem. Therefore, in response to this key issue, there is an urgent need to develop a new type of heat exchange plate that can adapt to refrigerant heat transfer and effectively avoid air plugs to meet the growing application requirements of high-power batteries. Summary of the Utility Model

[0005] The purpose of the present application is to at least overcome one deficiency existing in the prior art, and provide a refrigerant direct cooling plate with a double delivery mode for preventing air plugs. This refrigerant direct cooling plate realizes the uniform distribution of the refrigerant inside the direct cooling plate through optimizing the flow channel design, and utilizes the double delivery mode, thereby effectively preventing the occurrence of the air plug phenomenon and further enhancing the heat transfer efficiency and temperature control ability of the direct cooling plate.

[0006] To achieve the above object, the present application discloses a refrigerant direct cooling plate with an anti-air-lock double delivery mode. The direct cooling plate includes a plurality of flow channels, and at least one attachment channel is provided between adjacent flow channels; a plurality of capillary channels are recessed on the inner wall surface of the flow channels, and wall surface delivery is achieved by using the capillary channels.

[0007] In some embodiments, the direct cooling plate includes a bottom plate and a panel welded to the bottom plate. A plurality of grooves are bent on the panel, and the grooves cooperate with the bottom plate to form flow channels.

[0008] Furthermore, the capillary channels are provided on the groove surfaces of the grooves.

[0009] In some embodiments, the capillary channels intersect with each other to form an irregular spider web-like capillary liquid delivery network, enabling liquid delivery on the inner wall surface of the flow channels.

[0010] In some embodiments, the cross-section of the flow channel is trapezoid-like.

[0011] In some embodiments, the cross-section of the flow channel is bow-shaped.

[0012] In some embodiments, the capillary channels are arranged along the axial direction of the flow channel.

[0013] In some embodiments, the capillary channels rotate along the axial direction of the flow channel.

[0014] In some embodiments, one end of each flow channel is connected to the liquid inlet, and the other end is connected to the liquid outlet, and they are in parallel between the liquid inlet and the liquid injection port.

[0015] In some embodiments, each flow channel is connected end to end in sequence to form a long flow channel in series.

[0016] The beneficial effects listed above do not exhaust all advantages. Other potential beneficial effects and detailed technical implementation manners will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] After reading the following specific implementation manners in conjunction with the drawings, various aspects of the present disclosure will be better understood. Sometimes, the positions, dimensions, and ranges of the various structures shown in the drawings, etc., do not represent the actual positions, dimensions, and ranges, etc. In the drawings:

[0018] Figure 1 is a schematic diagram of the overall structure of an embodiment disclosed in the present application.

[0019] Figure 2 is a schematic diagram of the structure of an embodiment disclosed in the present application from another perspective.

[0020] Figure 3 is a schematic diagram of the structure of the panel in an embodiment disclosed in the present application.

[0021] Figure 4 It is a schematic diagram of a partial structure of a panel in an embodiment disclosed in this application. Detailed implementation manners

[0022] The present disclosure will be described below with reference to the accompanying drawings, in which several embodiments of the present disclosure are shown. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0023] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for clarity, the dimensions of some features may be deformed.

[0024] It should be understood that the terms used in the specification are only for describing specific embodiments and are not intended to limit the present disclosure. All terms used in the specification (including technical terms and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification.

[0025] The singular forms "a", "the", and "said" used in the specification include the plural forms unless clearly specified. The terms "comprising", "including", and "having" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the related listed items. Embodiment

[0026] As Figures 1 to 4 shown, this embodiment relates to a refrigerant direct cooling plate with a double delivery mode for preventing air plugs, which is specially designed for an efficient cooling system, especially in occasions where precise temperature control is required, such as the heat dissipation system of high-end electronic devices. The structure of this direct cooling plate is carefully designed to effectively prevent the formation of air plugs during the flow of the refrigerant and continue to ensure the delivery of the refrigerant when an air plug appears, avoiding phenomena such as local overheating or dry burning.

[0027] In this embodiment, the direct cooling plate is composed of a bottom plate 1 and a panel 2. The bottom plate 1 serves as the base of the direct cooling plate and is usually made of a high thermal conductivity material such as aluminum or copper, providing structural support and cooperating with the panel 2 to form the lower surface of the flow channel 3, ensuring that the refrigerant can effectively absorb and dissipate heat when flowing in the flow channel 3.

[0028] The panel 2 covers above the bottom plate 1 and is fixed on the bottom plate 1 by welding or other high-strength connection methods. Using a precision bending process, a plurality of grooves 4 are formed on its surface. These grooves 4 are in close fit with the surface of the bottom plate 1, jointly constituting the channel for refrigerant flow - that is, the flow channel 3. The design of the panel 2 not only ensures the sealing of the flow channel 3, but also provides a path for refrigerant flow through its structure.

[0029] It should be understood that the flow channel 3 is a closed channel formed between the bottom plate 1 and the panel 2, responsible for guiding the refrigerant to flow inside the direct cooling plate to achieve efficient heat exchange. The cross-sectional shape of the flow channel 3 can be designed as trapezoid-like or bow-shaped to optimize the flow characteristics of the fluid and the heat dissipation effect. One end of each flow channel 3 is connected to the liquid inlet, and the other end is connected to the liquid outlet, forming a complete refrigerant circulation path to ensure that the refrigerant can circulate effectively.

[0030] In this embodiment, the attachment channel 5 is located between adjacent flow channels 3, playing a role in connecting the flow channels to each other. When a certain flow channel 3 forms an air plug due to bubble aggregation, resulting in blocked refrigerant flow, the attachment channel 5 provides an alternative supplementary path, enabling the refrigerant to quickly replenish to the blocked area and also ensuring that it can bypass other areas and continue to flow in other flow channels 3. The attachment channel 5 is usually designed as relatively small connecting channels, distributed at specific positions of the flow channel 3, to effectively balance the fluid pressure and flow rate in the flow channel 3 and ensure that the overall cooling effect of the system is not affected by the blockage of a single flow channel.

[0031] In this embodiment, the liquid inlet (not shown in the figure) and the liquid outlet (not shown in the figure) are respectively arranged at both ends of the direct cooling plate. The refrigerant enters the direct cooling plate through the liquid inlet, flows along the flow channel 3, and finally is discharged through the liquid outlet.

[0032] In this embodiment, the layout of the flow channel 3 can adopt a parallel or series form: in the parallel structure, each flow channel 3 is respectively connected to the liquid inlet and the liquid outlet, forming multiple independent refrigerant flow paths; in the series structure, each flow channel 3 is connected end to end in sequence, forming a long flow channel, enabling the refrigerant to pass through each flow channel section in sequence to ensure sufficient heat exchange.

[0033] In this embodiment, the capillary channel 6 is a key design in this embodiment for enhancing refrigerant delivery and preventing air plug formation. The capillary channel 6 is etched or processed on the inner wall of the flow channel 3 and is arranged on the groove surface of the groove 4 or the entire inner surface of the flow channel 3 according to design requirements.

[0034] The capillary channel 6 is a fine groove, arranged in parallel along the axial direction of the flow channel 3 or in a spiral manner. The width and depth of the woolen channel 6 are precisely designed according to the physical properties of the refrigerant and the cross-sectional shape of the flow channel to ensure that the refrigerant can flow stably along the woolen channel 6 through capillary action.

[0035] It should be understood that the layout of the capillary channels 6 can be linearly arranged or staggered to form a spider-web structure to cover a larger area of the inner wall of the flow channel 3, thereby maximizing the uniformity of refrigerant distribution.

[0036] The main function of the capillary channels 6 is to use capillary action to guide the refrigerant to various parts of the inner wall of the flow channel 3 when the refrigerant is flowing, ensuring uniform distribution of the refrigerant on the inner wall. Especially when the refrigerant flows through areas with higher temperatures, narrower or curved flow channels, the capillary channels can effectively reduce the accumulation of bubbles, thereby preventing the formation of air plugs along the inner wall of the flow channel 3. In addition, when an air plug is formed in the flow channel 3, the capillary channels 6 can continue to supply the refrigerant to the plate surface of the air plug area, avoiding local overheating or dry burning caused by the blockage of the air plug.

[0037] In terms of the specific principle, the working principle of the capillary channels 6 is based on the capillary phenomenon, that is, the ability of a liquid to spontaneously rise or fall in a small channel. The capillary channels 6 utilize this principle to maintain a stable flow of the refrigerant on the inner wall of the capillary channels 6 even when the flow rate of the refrigerant in the flow channel 3 slows down or bubbles accumulate, thereby effectively reducing the accumulation of bubbles and preventing the formation of air plugs. The capillary channels 6 ensure that even in the presence of an air plug, the refrigerant can still flow continuously on the inner wall of the flow channel 3 by continuing to supply the refrigerant when the air plug is formed, avoiding dry burning caused by insufficient refrigerant in a local area.

[0038] In addition, at the same time, the capillary channels 6 improve the heat transfer efficiency of the refrigerant by increasing the contact area between the refrigerant and the inner wall of the flow channel 3, thereby enhancing the cooling performance of the entire direct cooling plate.

[0039] Although exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included within the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A refrigerant direct cooling plate with an anti-air-lock double delivery mode, characterized in that, The direct cooling plate includes: a plurality of flow channels, and at least one attachment channel is provided between adjacent flow channels; a plurality of capillary channels are recessed on the inner wall surface of the flow channels, and wall surface transportation is realized by means of the capillary channels.

2. The refrigerant direct cooling plate with a double delivery mode for preventing air plugs as described in claim 1, characterized in that: The direct cooling plate includes a bottom plate and a panel welded to the bottom plate. A plurality of grooves are bent on the panel, and the grooves cooperate with the bottom plate to form flow channels.

3. The refrigerant direct cooling plate with a double delivery mode for preventing air plugs as described in claim 1, characterized in that: The capillary channels are arranged on the groove surface of the grooves.

4. The refrigerant direct cooling plate with a double delivery mode for preventing air plugs as described in claim 1, characterized in that: The capillary channels intersect with each other to form an irregular spider-web-like capillary infusion network, enabling liquid transportation on the inner wall surface of the flow channels.

5. The refrigerant direct cooling plate with a double delivery mode for preventing air plugs as described in claim 1, wherein: The cross-section of the flow channel is trapezoid-like.

6. The refrigerant direct cooling plate with a double delivery mode for preventing air plugs as described in claim 1, wherein: The cross-section of the flow channel is bow-shaped.

7. The refrigerant direct cooling plate with a dual delivery mode for preventing air plugs as described in claim 1, wherein: The capillary channels are arranged along the axial direction of the flow channel.

8. The refrigerant direct cooling plate with a dual delivery mode for preventing air plugs as described in claim 1, wherein: The capillary channels rotate along the axial direction of the flow channel.

9. A refrigerant direct cooling plate with a double delivery mode for preventing air plugs, as described in claim 1, characterized in that: One end of each flow channel is connected to the liquid inlet, and the other end is connected to the liquid outlet, and they are connected in parallel between the liquid inlet and the liquid outlet.

10. A refrigerant direct cooling plate with a double delivery mode for preventing air plugs, as described in claim 1, characterized in that: Each flow channel is connected end to end in sequence to form a long flow channel in series.

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