Closed reversible heat exchange assembly and energy storage cabinet

Abstract

The utility model belongs to heat exchange technical field, specifically provides a closed reversible heat exchange subassembly and energy storage cabinet, aims at solving the problem that the liquid cooling plate of existing conventional heat exchange system is open type component, and there is big security hidden danger. For this, the closed reversible heat exchange subassembly of the utility model includes closed loop heat pipe, heat exchange board and cold and hot driving part, and the closed loop heat pipe is constituted closed circulation loop by micro pipeline and evaporator, and the phase change working medium is filled in the evaporator and micro pipeline; Heat exchange board is used for connecting with the device to be heat exchanged, and part of the pipeline of micro pipeline is connected with heat exchange board; Part of the pipeline of micro pipeline is connected with cold and hot driving part, and cold and hot driving part can heat or cool the micro pipeline connected with it. The closed reversible heat exchange subassembly of the utility model does not have the security problem caused by leakage and condensation, and has high safety, good heat exchange effect and low cost.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchange technology, specifically providing a closed reversible heat exchange component and energy storage cabinet. Background Technology

[0002] Currently, the mainstream thermal control module solution for conventional new energy battery packs involves fixing and contacting a liquid cooling plate (usually made of a thermally conductive metal such as aluminum alloy) at the bottom or side of the battery cell using adhesive or thermal pads. The liquid cooling plate has an inlet and an outlet. During heat dissipation, the battery generates heat during charging and discharging. This heat is conducted through direct contact between the solid components to the walls of the internal flow channels of the liquid cooling plate, and then from the walls to the liquid. The liquid is driven by a pump and flows to the outlet, where it transfers the heat to external heat dissipation components for cooling. During heating, the external liquid is heated by methods such as electric heating. Then, driven by a pump, the hot liquid is input from the inlet, flows through the internal flow channels, and the heat is transferred through the liquid to the walls. The walls then transfer the heat to the battery that needs to be heated through solid-state thermal conduction.

[0003] However, conventional liquid cooling plates are open components, typically connected to external piping via connectors (quick-connect fittings or other structural components for connecting pipelines). However, due to connector installation processes, lifespan limitations, or localized high pressure generated after impact, leaks frequently occur at the connections, leading to battery pack safety incidents. Furthermore, the introduction of relatively low-temperature coolant creates a temperature difference between the cooling plate and the environment, causing condensation to easily form on the outer side of the liquid cooling plate. If these condensations fall onto the underlying battery pack or other electrical components, they may trigger short circuits, resulting in safety incidents.

[0004] Accordingly, a new technical solution is needed in this field to solve the above-mentioned technical problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the liquid cooling plate of the existing conventional heat exchange system is an open component, which poses a great safety hazard.

[0006] In a first aspect, this utility model provides a closed-loop reversible heat exchange assembly, comprising a closed-loop heat pipe, a heat exchange plate, and a heating / cooling drive component. The closed-loop heat pipe includes a microchannel and an evaporator. The two ends of the microchannel are respectively connected to the vapor output end and the liquid return end of the evaporator to form a closed-loop circulation circuit. The evaporator and the microchannel are filled with a phase change working fluid. The evaporator is used to evaporate and change the phase change working fluid to circulate within the circulation circuit. The heat exchange plate is used to connect to the device to be heat exchanged. A portion of the microchannel is connected to the heat exchange plate. A portion of the microchannel is connected to the heating / cooling drive component, which can heat or cool the microchannel connected to it, so that when the phase change working fluid circulates within the circulation circuit, it exchanges heat with the device to be heat exchanged through the latent heat of phase change of the phase change working fluid and the heat exchange plate.

[0007] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, the microchannel is divided into a first channel and a second channel connected in series. The first channel is connected to the heat exchange plate, and the second channel is connected to the heating and cooling drive component. The evaporator is disposed on the first channel or the second channel.

[0008] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, the number of the first pipe and the second pipe is one. The first pipe is arranged to be circulated along the length or width direction of the heat exchange plate, and the second pipe is arranged to be circulated along the length or width direction of the heating and cooling drive component. Alternatively, the first pipe includes multiple first sub-pipes, which are distributed at intervals along the length or width direction of the heat exchange plate. The second pipe includes multiple second sub-pipes, which are distributed at intervals. The first sub-pipes and the second sub-pipes are arranged alternately and connected in series to form the micro-pipeline.

[0009] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, the first sub-pipeline is a first U-shaped structure; and / or, the second sub-pipeline is a second U-shaped structure.

[0010] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, the heating and cooling drive component includes a semiconductor chip and a heat transfer plate. The semiconductor chip is mounted on the heat transfer plate, and a portion of the microchannel connected to the heating and cooling drive component is connected to the heat transfer plate.

[0011] In the preferred embodiment of the above-mentioned closed reversible heat exchange assembly, a heating element is provided on the outer wall of the evaporator, and the heating element is used to heat the evaporator.

[0012] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, the phase change working fluid includes one or more of liquid ammonia, acetone, fluorinated refrigerant, water, and alkanes.

[0013] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, the heating and cooling drive element is arranged parallel to and spaced apart from the heat exchange plate; or, the heating and cooling drive element is located on the outer side of one end of the heat exchange plate, the heating and cooling drive element is arranged perpendicular to the heat exchange plate, and the evaporator is located between the heating and cooling drive element and the heat exchange plate.

[0014] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, when cooling the heat exchange device, the hot and cold driving element is the cold end, and the hot and cold driving element cools the microchannel connected to it, while the heat exchange plate is the hot end; or, when heating the heat exchange device, the hot and cold driving element is the hot end, and the hot and cold driving element heats the microchannel connected to it, while the heat exchange plate is the cold end.

[0015] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, a capillary structure is provided in a portion of the pipeline area of ​​the microtube connected to the heat exchange plate; and / or, a capillary structure is provided in a portion of the pipeline area of ​​the microtube connected to the heating / cooling drive component.

[0016] In the preferred embodiment of the above-mentioned closed reversible heat exchange component, the capillary structure is a capillary micropore disposed on the sidewall of the microchannel; or, the capillary structure is a capillary core with a petal-shaped cross-section disposed on the inner wall of the microchannel, the capillary core including a gas phase channel and multiple liquid phase channels, the gas phase channel being coaxially arranged with the microchannel, the multiple liquid phase channels being uniformly arranged circumferentially around the gas phase channel, and the liquid phase channels and the gas phase channels being connected through gaps; or, the capillary structure is a liquid-absorbing core, the liquid-absorbing core having a vapor passage at its center.

[0017] In a second aspect, the present invention provides an energy storage cabinet, which includes an energy storage battery and the aforementioned closed reversible heat exchange assembly. The heat exchange plate is connected to the energy storage battery so that the closed reversible heat exchange assembly can exchange heat with the energy storage battery through the heat exchange plate.

[0018] With the above technical solution adopted, the closed-loop reversible heat exchange assembly of this utility model includes a closed-loop heat pipe, a heat exchange plate, and a heating / cooling drive component. The closed-loop heat pipe includes micro-channels forming a closed circulation loop and an evaporator. Part of the micro-channel is connected to the heat exchange plate, and the heat exchange plate is connected to the device to be heated to exchange heat. Part of the micro-channel is connected to the heating / cooling drive component. This configuration has two advantages: First, the heat exchange assembly of this utility model is closed-loop, and unlike conventional liquid cooling plates, it does not have inlet / outlet joints, eliminating the risk of joint leakage. Second, no external low-temperature coolant enters, and during battery charging and discharging, the temperature of the entire heat exchange assembly is close to the battery temperature, which is lower than that of conventional liquid cooling plates. The small temperature difference with the outside reduces condensation; thirdly, the loop heat pipe is a closed design, and the phase change working fluid flows smoothly through the micro-channels without blockage, thus improving battery safety; fourthly, the amount of coolant used in the phase change working fluid is significantly reduced compared to conventional liquid cooling plates, resulting in lower costs and less maintenance; fifthly, the temperature of the heating and cooling drive components can be adjusted by the temperature of the heat exchange plate, thereby initiating the phase change working fluid circulation for heat exchange based on the temperature difference between the two, enabling adjustment of different start-up temperature differences and making it more convenient to use; sixthly, the location of the evaporator in this closed reversible heat exchange component is not limited and can be adjusted according to actual needs, and the change in the evaporator's location does not affect the circulation of the phase change working fluid within the loop.

[0019] Furthermore, the microcircuit includes a first pipe and a second pipe connected in series. The first pipe is connected to a heat exchange plate so that the phase change working fluid can exchange heat with the heat exchange plate when it flows through the first pipe. The second pipe is connected to a heating and cooling drive unit so that the phase change working fluid can exchange heat with the heating and cooling drive unit when it flows through the second pipe. This configuration makes it easier to set up and use.

[0020] Furthermore, the number of the first and second pipelines is one each, which makes the connection easy and facilitates assembly and use.

[0021] Furthermore, the first pipeline includes multiple first sub-pipelines, and the second pipeline includes multiple second sub-pipelines. The first and second sub-pipelines are alternately arranged and connected in series to form a micro-pipeline. This arrangement provides better heat exchange effect for the heat exchange plate and can improve heat exchange efficiency compared to setting only one first pipeline and one second pipeline.

[0022] Furthermore, the first sub-pipeline is designed as a first U-shaped structure, and the second sub-pipeline is designed as a second U-shaped structure. The structure is simple and easy to assemble and use.

[0023] Furthermore, the cooling and heating driving components are set as semiconductor plates and heat transfer plates, where the semiconductor plates can realize both cooling and heating, and the structure is simple, the size is small, and it is more convenient to use.

[0024] Furthermore, heating elements are installed on the outer wall of the evaporator to heat the evaporator so that when the phase change working fluid starts circulating, the heating elements heat the phase change working fluid in the evaporator to evaporate, thereby driving the gaseous working fluid to start circulating in the circulation loop.

[0025] Furthermore, by arranging the heating and cooling drive components parallel to the heat exchange plate and keeping the microchannels at the same horizontal level, the resistance to the flow of the phase change working fluid in the circulation loop can be reduced, allowing it to flow more smoothly and quickly.

[0026] Furthermore, by positioning the heating and cooling drive unit on the outer side of one end of the heat exchange plate and setting it perpendicular to the heat exchange plate, and placing the evaporator between the heating and cooling drive unit and the heat exchange plate, this arrangement improves space utilization when applying closed reversible heat exchange components to energy storage cabinets.

[0027] Furthermore, by incorporating capillary structures within parts of the microchannels, gas-liquid separation can occur during the flow of the phase change working fluid within the microchannels, thereby improving heat exchange efficiency. Attached Figure Description

[0028] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0029] Figure 1 This is a schematic diagram of one embodiment of the closed reversible heat exchange component of this utility model;

[0030] Figure 2 This is a schematic diagram of the second embodiment of the closed reversible heat exchange component of this utility model;

[0031] Figure 3 This is a schematic diagram of the third embodiment of the closed reversible heat exchange component of this utility model;

[0032] Figure 4 This is a top view of Embodiment 3 of the closed reversible heat exchange component of this utility model;

[0033] Figure 5 yes Figure 4 A cross-sectional view along the AA direction;

[0034] Figure 6 yes Figure 5 An enlarged schematic diagram of structure A in the middle.

[0035] List of reference numerals in the attached diagram:

[0036] 1. Closed-loop heat pipe; 11. Micropipe; 111. First pipe; 112. Second pipe; 12. Evaporator; 13. Capillary structure; 131. Vapor phase channel; 132. Liquid phase channel; 133. Gap;

[0037] 2. Heat exchange plate;

[0038] 3. Heating and cooling drive components; 31. Semiconductor wafers; 32. Heat transfer plates. Detailed Implementation

[0039] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0040] It should be noted that in the description of this utility model, terms such as "inner" and "outer" indicating directional or positional relationships are based on the directional or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connect," and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through other components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] As pointed out in the background section, the liquid cooling plates of existing conventional heat exchange systems are open components, posing significant safety hazards.

[0043] In its first aspect, this utility model provides a closed-loop reversible heat exchange component. This closed-loop reversible heat exchange component eliminates safety issues caused by leakage and condensation, has high safety, good heat exchange effect, and low cost.

[0044] Specifically, please also refer to Figures 1 to 3 The closed reversible heat exchange assembly of this utility model includes a closed loop heat pipe 1, a heat exchange plate 2, and a cold and hot driving component 3.

[0045] The closed-loop heat pipe 1 includes a micropipe 11 and an evaporator 12. The two ends of the micropipe 11 are connected to the steam output end and the liquid return end of the evaporator 12, respectively, thus forming a closed-loop circulation loop. The evaporator 12 and the micropipe 11 are filled with a phase change working fluid. The evaporator 12 is used to evaporate and change the phase change working fluid, thereby driving the phase change working fluid to circulate in the circulation loop.

[0046] The heat exchange plate 2 is used to connect to the device to be heat exchanged, and part of the micro-pipeline 11 is connected to the heat exchange plate 2.

[0047] Part of the microchannel 11 is connected to the heating and cooling drive unit 3. The heating and cooling drive unit 3 can heat or cool the microchannel 11 connected to it so that when the phase change working fluid circulates in the loop, it can exchange heat with the heat exchange device through the latent heat of phase change of the phase change working fluid and the heat exchange plate 2.

[0048] The closed-loop reversible heat exchange component of this invention has the following advantages: First, the heat exchange component is closed, unlike conventional liquid cooling plates which have no inlet / outlet joints, eliminating the risk of leakage. Second, no external low-temperature coolant enters, and during battery charging and discharging, the temperature of the entire heat exchange component is close to the battery temperature, resulting in a smaller temperature difference between the component and the outside environment compared to conventional liquid cooling plates, thus reducing condensation. Third, the loop heat pipe is closed, and the internal phase change working fluid flows without blockage within the microchannel 11, thereby improving battery safety. Fourth, the phase change... The amount of coolant used is greatly reduced compared to conventional liquid cooling plates, resulting in lower costs and no need for frequent maintenance. Fifthly, the temperature of the heating and cooling drive component 3 can be adjusted by the temperature of the heat exchange plate 2, thereby initiating the phase change working fluid circulation for heat exchange based on the temperature difference between the two. Heat exchange components with different start-up temperature differences can be designed for different scenarios, making them more convenient to use. Sixthly, the location of the evaporator 12 in the closed reversible heat exchange component of this invention is not limited and can be adjusted according to actual needs. The change in the location of the evaporator 12 does not affect the circulation of the phase change working fluid in the circulation loop.

[0049] In the case of heating the heat exchange device, the heating / cooling drive 3 is the hot end, which heats the microchannel 11 connected to it, while the heat exchange plate 2 is the cold end. Specifically, the temperature of the heating / cooling drive 3 is higher than that of the heat exchange plate 2. The phase change working fluid absorbs heat at the heating / cooling drive 3, increasing its vapor temperature. When the phase change working fluid flows to the heat exchange plate 2, it releases heat and condenses, transferring heat to the heat exchange plate 2 and thus heating the heat exchange device.

[0050] In the case of cooling the heat exchange device, the heating / cooling drive component 3 is the cold end, which cools the micro-pipe 11 connected to it, while the heat exchange plate 2 is the hot end. Specifically, the temperature of the heating / cooling drive component 3 is lower than the temperature of the heat exchange plate 2. The phase change working fluid releases heat and condenses at the heating / cooling drive component 3, thus lowering its temperature. When the phase change working fluid flows to the heat exchange plate 2, it absorbs heat and evaporates, transferring the cooling capacity to the heat exchange plate 2 and thereby cooling the heat exchange device.

[0051] Preferably, please continue reading. Figures 1 to 3 The microchannel 11 is divided into a first channel 111 and a second channel 112 connected in series. The first channel 111 is connected to the heat exchange plate 2, and the second channel 112 is connected to the heating and cooling drive unit 3. The evaporator 12 is installed on the first channel 111 or the second channel 112.

[0052] It should be noted that this utility model does not impose any restrictions on the specific structure of the first pipe 111 and the second pipe 112 of the microchannel 11. In practical applications, as long as the first pipe 111 is connected to the heat exchange plate 2 for heat exchange, and the second pipe 112 is connected to the heating and cooling drive component 3 for heat exchange, it is sufficient. Those skilled in the art can set the specific structure of the first pipe 111 and the second pipe 112 according to actual needs. Adjustments and changes to the specific structure of the first pipe 111 and the second pipe 112 do not deviate from the basic principle of this utility model and should be limited to the protection scope of this utility model.

[0053] In one implementation, please refer to Figure 1 The number of first pipe 111 and second pipe 112 is one. The first pipe 111 is arranged to be circulated along the length or width of the heat exchange plate 2, and the second pipe 112 is arranged to be circulated along the length or width of the hot and cold driving component 3.

[0054] In another implementation, please refer to Figure 2 or Figure 3 The first pipeline 111 includes multiple first sub-pipelines, which are distributed at intervals along the length or width of the heat exchange plate. The second pipeline 112 includes multiple second sub-pipelines, which are distributed at intervals. The first sub-pipelines and second sub-pipelines are alternately arranged and connected in series to form a micro-pipeline 11.

[0055] The first pipe 111 includes multiple first sub-pipes, and the second pipe 112 includes multiple second sub-pipes. The first sub-pipes and second sub-pipes are alternately arranged and connected in series to form a micro-pipeline. This arrangement is better for the heat exchange of the heat exchange plate 2 and can improve the heat exchange efficiency than setting only one first pipe 111 and one second pipe 112.

[0056] The spacing between two adjacent first sub-pipes and the spacing between two adjacent second sub-pipes can be adjusted by those skilled in the art according to actual needs. Any adjustment or change to the spacing between two adjacent first sub-pipes and the spacing between two adjacent second sub-pipes does not deviate from the basic principle of this utility model and should be limited to the protection scope of this utility model.

[0057] In a preferred embodiment, the first sub-pipe has a first U-shaped structure.

[0058] In other feasible implementations, the first sub-pipe has a W-shaped structure.

[0059] In a preferred embodiment, the second sub-pipe has a second U-shaped structure.

[0060] In other feasible implementations, the second sub-pipe has a W-shaped structure.

[0061] It should be noted that this utility model does not impose any restrictions on the specific connection methods of the first pipe 111 and the second pipe 112 with the heat exchange plate 2 and the heating and cooling drive component 3, respectively. In practical applications, those skilled in the art can set the connection method of the first pipe 111 with the heat exchange plate 2 and the connection method of the second pipe 112 with the heating and cooling drive component 3 according to actual needs.

[0062] In one feasible embodiment, the first pipe 111 is bonded to the heat exchange plate 2 by thermally conductive adhesive; the second pipe 112 is bonded to the hot and cold driving component 3 by thermally conductive adhesive.

[0063] In another feasible embodiment, the first pipe 111 is engaged in the heat exchange plate 2, and the second pipe 112 is engaged in the hot and cold drive component 3.

[0064] In another feasible embodiment, the first pipeline 111 is integrally formed with the heat exchange plate 2, wherein the heat exchange plate 2 is provided with a circulation channel, which forms the first pipeline 11. The second pipeline 112 is a metal pipeline, and the end of the metal pipeline is welded and sealed to the channel opening of the circulation channel to form a micro-pipeline 11.

[0065] It should be noted that this utility model does not impose any restrictions on the specific structure of the heating and cooling drive component 3, as long as the heating and cooling drive component 3 has heating and cooling functions. In practical applications, those skilled in the art can set the specific structure of the heating and cooling drive component 3 according to actual needs. Any adjustments and changes to the structure of the heating and cooling drive component 3 do not deviate from the basic principles of this utility model and should be limited to the protection scope of this utility model.

[0066] In a preferred embodiment, please refer to Figure 1The heating / cooling drive unit 3 includes a semiconductor chip 31 and a heat transfer plate 32. The semiconductor chip 31 is mounted on the heat transfer plate 32, and a portion of the microchannel 11 connected to the heating / cooling drive unit 3 is connected to the heat transfer plate 32. The heat transfer plate 32 is used to mount the semiconductor chip 31 and to exchange heat with the microchannel 11.

[0067] With this configuration, the structure of the heating and cooling drive component 3 is simple, its size is small, and it is easy to assemble and use.

[0068] In another embodiment, the cooling and heating drive unit 3 includes a cooling element (e.g., fins, heat sink, liquid guide tube, or semiconductor cooling chip), a heating element (e.g., heating chip or heating film), and a heat transfer plate. The cooling element and the heating element are mounted on the heat transfer plate and are used to cool and heat the heat transfer plate, respectively. A portion of the micro-pipeline 11 connected to the cooling and heating drive unit 3 is connected to the heat transfer plate.

[0069] There are no restrictions on the installation method and position of the cooling and heating components relative to the heat transfer plate, as long as the cooling and heating components can respectively cool and heat the heat transfer plate. In practical applications, those skilled in the art can set the installation method and position of the cooling and heating components relative to the heat transfer plate according to actual needs.

[0070] In one feasible embodiment, there are multiple cooling elements and multiple heating elements, and the multiple cooling elements and multiple heating elements are arranged alternately along the length direction of the heat transfer plate.

[0071] In another feasible embodiment, there is one cooling element and one heating element, which are spaced apart along the width direction of the heat transfer plate and extend along the length direction of the heat transfer plate.

[0072] It should be noted that this utility model does not impose any restrictions on the relative positions of the heating and cooling drive component 3, the heat exchange plate 2, and the evaporator 12. In practical applications, those skilled in the art can set the positions of the heating and cooling drive component 3, the heat exchange plate 2, and the evaporator 12 according to actual needs. Any adjustments or changes to the relative positions of the heating and cooling drive component 3, the heat exchange plate 2, and the evaporator 12 do not deviate from the basic principles of this utility model and should be limited to the protection scope of this utility model.

[0073] In one feasible implementation, please refer to Figure 2 The heating and cooling drive unit 3 is arranged parallel to and spaced apart from the heat exchange plate 2. By arranging the heating and cooling drive unit 3 parallel to the heat exchange plate 2, the circulation loop remains horizontal. During the flow of the phase change working fluid, the liquid phase flow does not need to overcome gravity, which can reduce flow resistance, increase the overall flow velocity of the medium, and thus improve the heat exchange effect.

[0074] For other feasible implementations, please refer to Figure 1 and Figure 3 The heating and cooling drive unit 3 is located on the outer side of one end of the heat exchange plate 2, and is perpendicular to the heat exchange plate 2. The evaporator 12 is located between the heating and cooling drive unit 3 and the heat exchange plate 2. By positioning the heating and cooling drive unit 3 on the outer side of one end of the heat exchange plate 2 and perpendicular to the heat exchange plate 2, and placing the evaporator 12 between the heating and cooling drive unit 3 and the heat exchange plate 2, this arrangement makes good use of the space between the heating and cooling drive unit 3 and the heat exchange plate 2 to install the evaporator 12. When applying the closed reversible heat exchange component to the energy storage cabinet, it can improve the space utilization rate and reduce the overall volume of the energy storage cabinet.

[0075] Preferably, a capillary structure 13 is provided inside a portion of the microchannel 11.

[0076] It should be noted that this utility model does not impose any restrictions on the specific location or number of capillary structures 13. In practical applications, those skilled in the art can set the specific location and number of capillary structures 13 according to actual needs.

[0077] In one embodiment, the capillary structure 13 is disposed within a portion of the microchannel 11 connected to the heat exchange plate 2.

[0078] In one embodiment, the capillary structure 13 is disposed within a portion of the microchannel 11 connected to the heating / cooling drive element 3.

[0079] In one embodiment, capillary structures 13 are provided in a portion of the microchannel 11 connected to the heat exchange plate 2 and in a portion of the microchannel 11 connected to the heating and cooling drive unit 3.

[0080] In one embodiment, capillary structures 13 are provided at the bends of both the first pipe 111 and the second pipe 112.

[0081] It should be noted that this utility model does not impose any restrictions on the specific structure of the capillary structure 13, as long as the capillary structure 13 can help assist in the evaporation of the phase change working fluid and perform gas-liquid separation. In practical applications, those skilled in the art can set the specific structure of the capillary structure 13 according to actual needs.

[0082] In one embodiment, the capillary structure 13 is a capillary micropore disposed on the inner wall of the microchannel 11.

[0083] In another implementation, please refer to Figure 6The capillary structure 13 is a petal-shaped capillary core disposed on the inner wall of the microchannel 11. The capillary core includes a gas phase channel 131 and multiple liquid phase channels 132. The gas phase channel 131 is coaxially arranged with the microchannel 11, and the multiple liquid phase channels 132 are uniformly arranged around the gas phase channel 131 in a circumferential direction. The liquid phase channels 132 and the gas phase channels 131 are connected through gaps 133.

[0084] In another embodiment, the capillary structure 13 is a liquid-absorbing core, and the liquid-absorbing core has a gas passage at its center.

[0085] Preferably, heating elements are provided on the outer wall of the evaporator 12 for heating the evaporator 12.

[0086] Heating plates are installed on the outer wall of the evaporator 12 to heat the evaporator 12 so that when the phase change working medium starts to circulate, the heating plates heat the phase change working medium in the evaporator 12 to evaporate, thereby driving the gas phase working medium to start the circulation flow in the circulation loop.

[0087] Preferably, the phase change working fluid includes one or more of liquid ammonia, acetone, fluorinated refrigerant (e.g., Freon), water, and alkanes.

[0088] It should be noted that in practical applications, those skilled in the art can choose a suitable phase change working medium according to actual needs. For example, when the heat exchange temperature is below 0°C, a non-aqueous phase change working medium (such as acetone, liquid ammonia, etc.) or a mixture of water and other non-aqueous phase change working media can be used. Any adjustments or changes to the phase change working medium do not deviate from the basic principles of this utility model and should be limited to the protection scope of this utility model.

[0089] In some implementations, the phase change working fluid is acetone.

[0090] In some implementations, the phase change working fluid is liquid ammonia.

[0091] In some implementations, the phase change working fluid is a mixture of water and acetone.

[0092] Preferably, the phase change working fluid filling rate in the loop heat pipe 1 is 55% to 75%. This filling rate is the ratio of the volume of the filled liquid working fluid to the total volume within the loop heat pipe 1.

[0093] In a second aspect, the present invention provides an energy storage cabinet, which includes an energy storage battery and a closed reversible heat exchange assembly. The heat exchange plate 2 is connected to the energy storage battery so that the closed reversible heat exchange assembly can exchange heat with the energy storage battery through the heat exchange plate 2.

[0094] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A closed-loop reversible heat exchange component, characterized in that, The closed-loop reversible heat exchange assembly includes a closed-loop heat pipe (1), a heat exchange plate (2), and a heating / cooling drive component (3). The closed-loop heat pipe (1) includes a microtube (11) and an evaporator (12). The two ends of the microtube (11) are connected to the steam output end and the liquid return end of the evaporator (12) respectively to form a closed loop. The evaporator (12) and the microtube (11) are filled with a phase change working fluid. The evaporator (12) is used to evaporate and change the phase change working fluid so that the phase change working fluid circulates in the loop. The heat exchange plate (2) is used to connect to the device to be heat exchanged, and part of the micro-channel (11) is connected to the heat exchange plate (2); Part of the microchannel (11) is connected to the heating and cooling drive (3). The heating and cooling drive (3) can heat or cool the microchannel (11) connected to it so that the phase change working fluid can exchange heat with the heat exchange device through the latent heat of phase change of the phase change working fluid and the heat exchange plate (2) when the phase change working fluid circulates in the circulation loop.

2. The closed-loop reversible heat exchange assembly according to claim 1, characterized in that, The microchannel (11) is divided into a first channel (111) and a second channel (112) connected in series. The first channel (111) is connected to the heat exchange plate (2), and the second channel (112) is connected to the heating and cooling drive unit (3). The evaporator (12) is installed on the first channel (111) or the second channel (112).

3. The closed-loop reversible heat exchange component according to claim 2, characterized in that, The number of the first pipe (111) and the second pipe (112) is one. The first pipe (111) is arranged to be circulated along the length or width direction of the heat exchange plate (2), and the second pipe (112) is arranged to be circulated along the length or width direction of the hot and cold driving component (3). Alternatively, the first pipeline (111) may include a plurality of first sub-pipelines, which are distributed at intervals along the length or width of the heat exchange plate. The second pipeline (112) may include a plurality of second sub-pipelines, which are distributed at intervals. The first sub-pipelines and the second sub-pipelines may be alternately arranged and connected in series to form the micro-pipeline (11).

4. The closed-loop reversible heat exchange assembly according to claim 3, characterized in that, The first sub-pipeline has a first U-shaped structure; And / or, the second sub-pipeline is a second U-shaped structure.

5. The closed-loop reversible heat exchange assembly according to any one of claims 1 to 4, characterized in that, The heating and cooling drive unit (3) includes a semiconductor chip (31) and a heat transfer plate (32). The semiconductor chip (31) is mounted on the heat transfer plate (32), and a portion of the microchannel (11) connected to the heating and cooling drive unit (3) is connected to the heat transfer plate (32).

6. The closed-loop reversible heat exchange assembly according to any one of claims 1 to 4, characterized in that, Heating elements are provided on the outer wall of the evaporator (12) for heating the evaporator (12).

7. The closed-loop reversible heat exchange assembly according to any one of claims 1 to 4, characterized in that, The phase change working fluid includes one or more of liquid ammonia, acetone, fluorinated refrigerant, water, and alkanes.

8. The closed-loop reversible heat exchange assembly according to any one of claims 1 to 4, characterized in that, The heating and cooling drive component (3) is parallel to and spaced apart from the heat exchange plate (2); Alternatively, the heating and cooling drive (3) is located on the outside of one end of the heat exchange plate (2), the heating and cooling drive (3) is arranged perpendicular to the heat exchange plate (2), and the evaporator (12) is located between the heating and cooling drive (3) and the heat exchange plate (2).

9. The closed-loop reversible heat exchange assembly according to any one of claims 1 to 4, characterized in that, In the case of cooling the heat exchange device, the cold and hot drive (3) is the cold end, the cold and hot drive (3) cools the micro-tube (11) connected to it, and the heat exchange plate (2) is the hot end; Alternatively, when the heat exchange device is heated, the hot and cold drive (3) is the hot end, the hot and cold drive (3) heats the micro-channel (11) connected to it, and the heat exchange plate (2) is the cold end.

10. An energy storage cabinet, characterized in that, The energy storage cabinet includes an energy storage battery and a closed reversible heat exchange assembly according to any one of claims 1 to 9. The heat exchange plate (2) is connected to the energy storage battery so that the closed reversible heat exchange assembly can exchange heat with the energy storage battery through the heat exchange plate (2).

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