Battery energy storage cabinet

Abstract

This utility model belongs to the field of energy storage technology, specifically providing a battery energy storage cabinet. It aims to solve the problems of high cost, system complexity, and difficulty in temperature control associated with existing energy storage cabinets using liquid cooling systems. To address these issues, the battery energy storage cabinet of this utility model includes a cabinet body, multiple rows of battery modules, and multiple phase change heat exchange components. The internal space of the cabinet body is divided into multiple compartments by a first partition, and each compartment is further divided into a battery compartment and a temperature control compartment by a second partition. Each battery compartment contains at least one row of battery modules, and each row includes multiple battery modules spaced vertically. Each battery module is connected to a phase change heat exchange component, which has a first heat exchange end and a second heat exchange end. The phase change heat exchange component penetrates the second partition, with the first heat exchange end connected to the battery module and the second heat exchange end located within the temperature control compartment. The energy storage cabinet of this utility model has a simple structure, is easy to set up and assemble, and provides good heat exchange performance.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage technology, specifically providing a battery energy storage cabinet. Background Technology

[0002] Lithium batteries are the core component of containerized energy storage systems and have strict requirements for operating temperature. Typically, the tightly packed battery packs within the storage container generate a significant amount of heat during charging and discharging. If this heat cannot be dissipated quickly, problems such as heat accumulation between battery packs and large temperature differences will occur. Therefore, reliable heat dissipation is necessary to maintain normal system operation. When the system is in a low-temperature environment and has not been used for an extended period, the battery pack temperature may not reach the minimum operating temperature, requiring measures to raise the battery pack temperature. Furthermore, to maintain normal system operation in low-temperature environments, the system control cabinet needs to be insulated.

[0003] Currently, the most common cooling method for energy storage containers is air cooling, while some high-end products use liquid cooling. Air cooling is simple in structure, easy to install, and has a low cost, but it cannot meet the heat dissipation requirements of large-capacity energy storage systems, and the temperature difference between the inlet and outlet battery packs is large, meaning that the battery heat dissipation is uneven. Liquid cooling is better than air cooling, but the system is complex, bulky, expensive, and has high costs, and it is difficult to install and maintain, so it cannot be widely used.

[0004] Accordingly, this application requires a new technical solution 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 problems of high cost, complex system and inconvenient temperature control of existing energy storage cabinets using liquid cooling systems for cooling.

[0006] This utility model provides a battery energy storage cabinet, which includes a cabinet body, multiple rows of battery modules, and multiple phase change heat exchange components. The internal space of the cabinet body is divided into multiple compartments by a first partition, and the multiple compartments are spaced apart along a first horizontal direction. Each compartment is further divided into a battery compartment and a temperature control compartment by a second partition, and the battery compartment and the temperature control compartment are spaced apart along the first horizontal direction. The battery compartment is a sealed compartment. Each battery compartment contains at least one row of battery modules, and each row of battery modules includes multiple battery modules spaced apart along a vertical direction. Each battery module is connected to a phase change heat exchange component, which has a first heat exchange end and a second heat exchange end. The phase change heat exchange component penetrates the second partition. The first heat exchange end is connected to the battery module to exchange heat with it, and the second heat exchange end is located in the temperature control compartment.

[0007] In the preferred embodiment of the above-mentioned battery energy storage cabinet, each battery compartment is provided with multiple rows of battery modules, and the multiple rows of battery modules are distributed at intervals along a second horizontal direction, which is perpendicular to the first horizontal direction.

[0008] In the preferred embodiment of the above-mentioned battery energy storage cabinet, each column of battery modules further includes a fixing frame, the fixing frame having multiple receiving cavities spaced apart along the vertical direction, and the battery modules are located in the receiving cavities.

[0009] In the preferred embodiment of the above-mentioned battery energy storage cabinet, the battery module includes a housing and a battery pack. The phase change heat exchange component includes a heat exchange plate and a phase change heat exchange element and a hot / cold source driving element disposed on the heat exchange plate. The heat exchange plate includes a heat exchange section and a driving section connected together. The heat exchange section forms the first heat exchange end, and the driving section forms the second heat exchange end. The housing and the heat exchange section form a sealed accommodating space. The battery pack is located in the accommodating space and connected to the heat exchange section. The hot / cold source driving element is installed on the driving section and can heat the driving section to make it a heat source, and can cool the driving section to make it a cold source. A portion of the phase change heat exchange element is located on the heat exchange section, and a portion is located on the driving section, so that the heat exchange section and the battery pack can exchange heat through the phase change of the phase change working fluid. The heat exchange plate penetrates the second partition, the heat exchange section is located in the battery compartment, and the hot / cold source driving element and the driving section are located in the temperature control chamber.

[0010] In the preferred embodiment of the above-mentioned battery energy storage cabinet, the phase change heat transfer component includes a loop heat pipe, one part of which is connected to the heat exchange section, and the other part of which is connected to the drive section.

[0011] In the preferred technical solution of the above-mentioned battery energy storage cabinet, the loop heat pipe includes a micro-pipe forming a closed loop and an evaporator. The micro-pipe and the evaporator are filled with a first phase change working fluid. The evaporator includes a first pipe and a second pipe connected in series. The first pipe is arranged on the heat exchange section, and the second pipe is arranged on the drive section.

[0012] In the preferred technical solution of the above-mentioned battery energy storage cabinet, the phase change heat exchange component further includes an L-shaped heat pipe, and the heat exchange plate is an L-shaped heat exchange plate. The portion of the L-shaped heat exchange plate extending along the vertical direction is the driving section, and the portion extending along the first horizontal direction is the heat exchange section. The L-shaped heat pipe is filled with a second phase change working fluid. The L-shaped heat pipe includes a vertically arranged condensing section, a horizontally arranged evaporating section, and an insulating section connecting the condensing section and the evaporating section. The condensing section is arranged on the driving section, and the evaporating section is arranged on the heat exchange section.

[0013] In the preferred technical solution of the above-mentioned battery energy storage cabinet, the L-shaped heat pipe is provided with a capillary wick structure extending along its length. The capillary wick structure includes a gas channel and a liquid channel, so that the second phase change working fluid can absorb heat and evaporate in the evaporation section, so that the gas phase working fluid flows towards the condensation section in the gas channel, and after releasing heat and condensing in the condensation section, the liquid phase working fluid flows towards the evaporation section in the liquid channel under the action of gravity.

[0014] In the preferred technical solution of the above-mentioned battery energy storage cabinet, the cabinet body is provided with an air inlet and an air outlet, and the temperature control chamber is connected to the external environment through the air inlet and the air outlet.

[0015] In the preferred embodiment of the above-mentioned battery energy storage cabinet, the battery energy storage cabinet further includes a cooling component disposed at the air inlet, the cooling component being used to cool the air entering the temperature control chamber through the air inlet; and / or, the battery energy storage cabinet further includes a heating component disposed at the air inlet, the heating component being used to heat the air entering the temperature control chamber through the air inlet; and / or, the battery energy storage cabinet further includes an intake fan disposed at the air inlet, the intake fan being used to draw air from the outside environment into the temperature control chamber through the air inlet; and / or, the battery energy storage cabinet further includes an exhaust fan disposed at the air outlet, the exhaust fan being used to discharge the gas in the temperature control chamber to the outside environment through the air outlet.

[0016] With the above technical solution adopted, the battery energy storage cabinet of this utility model is divided into multiple housing compartments by a first partition, and each housing compartment is further divided into an independent battery compartment and a temperature control compartment by a second partition. The battery modules are located in the battery compartment, and the first heat exchange end of the phase change heat exchange component is located in the battery compartment for heat exchange with the battery modules. The second heat exchange end of the phase change heat exchange component is located in the temperature control compartment. This arrangement concentrates the battery modules in the sealed battery compartment and uses the phase change heat exchange component to exchange heat (cool down or heat up) with the battery modules, and also ensures that the first heat exchange end of the phase change heat exchange component... The two heat exchange ends are located inside the temperature control chamber. Firstly, the phase change heat exchange component performs heat exchange, which has high heat exchange efficiency and avoids the potential leakage of liquid cooling components, thus improving safety. Secondly, the second heat exchange end of the phase change heat exchange component is concentrated in the temperature control chamber, which can improve the heat exchange effect by regulating the temperature inside the chamber. This makes it easier to control and use, and the system has low complexity, making it easy to set up and assemble. Thirdly, the temperature control chamber of each compartment can be controlled independently, allowing for modular control, which makes temperature control more convenient and effectively improves safety performance.

[0017] Furthermore, each battery compartment is equipped with multiple rows of battery modules, enabling a single temperature control chamber to simultaneously regulate the temperature of the phase conversion heat exchange components corresponding to multiple rows of battery modules. This allows for better utilization of the energy storage cabinet's space and reduces the complexity of the energy storage cabinet.

[0018] Furthermore, the battery module includes a mounting bracket, which is used to install and fix the battery module, thereby distributing multiple battery modules in an orderly manner and improving space utilization.

[0019] Furthermore, the battery module includes a housing and a battery pack, and the phase change heat exchange component includes a heat exchange plate, a phase change heat exchange element and a cold / heat source driving element. The heat exchange section of the housing and the heat exchange plate are connected to form a housing space for fixing and accommodating the battery pack, thereby integrating the battery module and the phase change heat exchange component, making it easier to assemble and use and improving the heat exchange effect of the phase change heat exchange component.

[0020] Furthermore, the phase change heat transfer component is set as a loop heat pipe, which has a simple structure and is easy to use. When used with the cold and heat source driving component, it can both dissipate heat from the battery module and heat the battery module.

[0021] Furthermore, the phase change heat transfer component is configured with a loop heat pipe and an L-shaped heat pipe. The combination of the loop heat pipe and the L-shaped heat pipe can improve the heat dissipation effect of the battery module and make it more convenient to use.

[0022] Furthermore, the cabinet is equipped with air inlets and outlets to allow the temperature-controlled chamber to connect with the external environment and facilitate gas circulation.

[0023] Furthermore, a cooling component is installed at the air inlet. When it is necessary to cool the battery module, the air entering the air inlet can be cooled, thereby reducing the temperature of the gas entering the temperature control chamber and improving the heat dissipation effect on the battery module.

[0024] Furthermore, a heating element is installed at the air inlet. When the battery module needs to be heated, the air entering the air inlet is heated first, thereby increasing the temperature of the gas entering the temperature control chamber and improving the heating effect on the battery module.

[0025] Furthermore, an air intake fan is installed at the air inlet to facilitate the drawing of air from the outside environment into the temperature control chamber, thereby improving the efficiency of gas circulation between the temperature control chamber and the outside environment.

[0026] Furthermore, an exhaust fan is installed at the air outlet to facilitate the exhaust of air from the temperature control chamber to the outside environment, thereby improving the efficiency of gas circulation between the temperature control chamber and the outside environment. Attached Figure Description

[0027] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the first embodiment of the battery energy storage cabinet of this utility model;

[0029] Figure 2 This is a top view of the first embodiment of the battery energy storage cabinet of this utility model;

[0030] Figure 3 yes Figure 2 A cross-sectional view along the AA direction;

[0031] Figure 4 This is a three-dimensional structural schematic diagram of the second embodiment of the battery energy storage cabinet of this utility model;

[0032] Figure 5 This is a structural schematic diagram of the first embodiment of the cabinet of this utility model;

[0033] Figure 6 This is a structural schematic diagram of the second embodiment of the cabinet of this utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the battery module and phase change heat exchange component of this utility model.

[0035] Figure 8 This is a structural schematic diagram of the fixing frame of this utility model;

[0036] Figure 9This is an exploded structural diagram of the battery module and phase change heat exchange component of this utility model.

[0037] Figure 10 This is a schematic diagram of the structure of the battery module and the phase change heat exchange component of this utility model after being combined.

[0038] Figure 11 This is the three-dimensional structural concept of the first embodiment of the phase change heat exchange component of this utility model. Figure 1 ;

[0039] Figure 12 This is the three-dimensional structural concept of the first embodiment of the phase change heat exchange component of this utility model. Figure 2 ;

[0040] Figure 13 This is a top view of the first embodiment of the phase change heat exchanger of this utility model;

[0041] Figure 14 yes Figure 13 A cross-sectional view along the CC direction;

[0042] Figure 15 yes Figure 14 Enlarged structural diagram at point A;

[0043] Figure 16 This is a three-dimensional structural schematic of the second embodiment of the phase change heat exchanger of this utility model;

[0044] Figure 17 yes Figure 16 Enlarged structural diagram at point B;

[0045] Figure 18 yes Figure 16 Enlarged structural diagram at point C;

[0046] Figure 19 This is a three-dimensional structural schematic of the third embodiment of the phase change heat exchange component of this utility model.

[0047] List of reference numerals in the attached diagram:

[0048] 1. Cabinet; 101. Air Inlet; 102. Air Outlet; 11. Storage Chamber; 111. Battery Chamber; 112. Temperature Control Chamber;

[0049] 2. Battery module; 21. Battery module; 211. Housing; 212. Battery pack; 22. Mounting bracket; 221. Receiving cavity;

[0050] 3. Phase change heat exchange assembly; 301. First heat exchange end; 302. Second heat exchange end; 31. Heat exchange plate; 311. Heat exchange section; 312. Drive section; 32. Phase change heat exchange component; 321. Loop heat pipe; 3211. Micropipe; 3212. Capillary structure; 3213. Evaporator; 322. L-shaped heat pipe; 3221. Condensation section; 3222. Evaporation section; 3223. Insulation section; 3224. Capillary wick structure; 32241. Gas channel; 32242. Liquid channel; 33. Cold / heat source drive component; 331. Refrigeration component; 332. Heating component;

[0051] 4. First partition; 5. Second partition. Detailed Implementation

[0052] 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.

[0053] It should be noted that in the description of this utility model, terms such as "above," "inner side," and "outer side," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on 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.

[0054] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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.

[0055] The background art points out that the existing energy storage cabinets use liquid cooling systems for cooling, which are costly, complex, and difficult to control in terms of temperature.

[0056] This utility model's battery energy storage cabinet features a compartmentalized design, concentrating battery modules in a sealed battery compartment. A phase-change heat exchanger is used to exchange heat (cool or heat) the battery modules, with the second heat exchange end of the phase-change heat exchanger located within a temperature-controlled compartment. Firstly, the phase-change heat exchanger offers high heat exchange efficiency and avoids potential leakage issues associated with liquid-cooled components, resulting in enhanced safety. Secondly, the concentration of the second heat exchange end of the phase-change heat exchanger within the temperature-controlled compartment allows for improved heat exchange efficiency through temperature regulation, facilitating control and operation. Furthermore, the system is less complex, simplifying setup and assembly, and providing better heat exchange performance. Thirdly, each compartment's temperature-controlled compartment is individually adjustable, enabling separate control of each module, further enhancing temperature management and improving safety performance.

[0057] Specifically, please also refer to Figures 1 to 4 The present invention provides a battery energy storage cabinet comprising a cabinet body 1, multiple rows of battery modules 2, and multiple phase change heat exchange components 3.

[0058] For details, please continue reading Figure 3 and Figure 4 The internal space of the cabinet 1 is divided into multiple compartments 11 by a first partition 4. These compartments 11 are spaced apart along a first horizontal direction. Each compartment 11 is further divided into an independent battery compartment 111 and a temperature control compartment 112 by a second partition 5. The battery compartment 111 and the temperature control compartment 112 are also spaced apart along the first horizontal direction. The battery compartment 111 is a sealed compartment, while the temperature control compartment 112 can be a closed compartment. The temperature within the temperature control compartment 112 is regulated by installing a liquid cooling unit or an air conditioning unit. The temperature control compartment 112 can also be connected to the external environment for heat exchange. The first partition 4 and the second partition 5 can be snapped onto the cabinet 1, or they can be connected to the cabinet 1 via a snap-fit ​​structure, or they can be integrated into the cabinet 1 as a single unit.

[0059] For details, please continue reading Figures 1 to 4 Each battery compartment 111 contains at least one row of battery modules 2. Each row of battery modules 2 includes multiple battery modules 21 spaced apart in the vertical direction. Each battery module 21 is connected to a phase change heat transfer component 3.

[0060] For details, please refer to the following: Figure 9 and Figure 10 The phase change heat exchange component 3 has a first heat exchange end 301 and a second heat exchange end 302. The phase change heat exchange component 3 passes through the second partition 5. The first heat exchange end 301 is connected to the battery module 21 so as to exchange heat with the battery module 21. The second heat exchange end 302 is located inside the temperature control chamber 112. The second partition 5 is provided with a through hole for the phase change heat exchange component 3 to pass through.

[0061] The battery energy storage cabinet of this utility model has a cabinet body 1 divided into multiple housing compartments by a first partition 4. Each housing compartment is further divided into an independent battery compartment 111 and a temperature control compartment 112 by a second partition. The battery module 2 is located in the battery compartment 111. The first heat exchange end 301 of the phase change heat exchange component 3 is located in the battery compartment 111 for heat exchange with the battery module 21. The second heat exchange end 302 of the phase change heat exchange component 3 is located in the temperature control compartment 112. This arrangement concentrates the battery module 2 in the battery compartment 111 for sealing, and uses the phase change heat exchange component 3 to exchange heat (cool down or heat up) with the battery module 21. The second heat exchange end 302 is located inside the temperature control chamber 112. Firstly, the phase change heat exchange component 3 performs heat exchange, which has high heat exchange efficiency and avoids the possible leakage of liquid cooling components, thus improving safety. Secondly, the second heat exchange end 302 of the phase change heat exchange component 3 is concentrated inside the temperature control chamber 112, which can improve the heat exchange effect by adjusting the temperature inside the temperature control chamber 112, making it easier to control and use. The system has low complexity, is easy to set up and assemble, and has better heat exchange effect. Thirdly, the temperature control chamber 112 of each containment chamber 11 can be controlled independently, allowing for separate control of each module, making temperature control more convenient and effectively improving safety performance.

[0062] In another embodiment, please also refer to Figure 1 and Figure 2 Each battery compartment 111 contains multiple rows of battery modules 2, which are spaced apart along a second horizontal direction, which is perpendicular to the first horizontal direction.

[0063] In this utility model, the first horizontal direction is the length direction of the cabinet 1, and the second horizontal direction is the width direction of the cabinet 1.

[0064] Preferably, please also refer to Figure 7 and Figure 8 Each battery module 2 also includes a mounting bracket 22, which has multiple accommodating cavities 221 spaced apart along the vertical direction, within which the battery modules 21 are located. The mounting bracket 22 secures the battery modules 21, allowing for an orderly distribution of multiple battery modules and improving space utilization.

[0065] Preferably, please also refer to Figures 9 to 12 The battery module 21 includes a housing 211 and a battery PACK 212. The phase change heat exchange assembly 3 includes a heat exchange plate 31 and a phase change heat exchange component 32 and a cold / heat source driving component 33 disposed on the heat exchange plate 31. The heat exchange plate 31 includes a heat exchange section 311 and a driving section 312 connected together. The heat exchange section 311 forms a first heat exchange end 301, and the driving section 312 forms a second heat exchange end 302.

[0066] The housing 211 and the heat exchange section 311 form a sealed housing space. The battery PACK 212 is located in the housing space and connected to the heat exchange section 311. The hot and cold source drive unit 33 is installed on the drive section 312 and can heat the drive section 312 to make the drive section 312 a heat source, and can cool the drive section 312 to make the drive section 312 a cold source.

[0067] A portion of the phase change heat exchange component 32 is located on the heat exchange section 311 and a portion is located on the drive section 312, so that the heat exchange section 311 and the battery PACK 212 can exchange heat through the phase change of the phase change working fluid.

[0068] Please refer to the following: Figure 3 , Figure 4 and Figure 12 The heat exchange plate 31 penetrates the second partition 5, the heat exchange section 311 is located inside the battery compartment 111, and the cold and heat source drive unit 33 and the drive section 312 are located inside the temperature control compartment 112.

[0069] The battery module 21 includes a housing 211 and a battery PACK 212. The phase change heat exchange assembly 3 includes a heat exchange plate 31, a phase change heat exchange component 32, and a cold and heat source driving component 33. The housing 211 is connected to the heat exchange section 311 of the heat exchange plate 31 to form a receiving space for fixing and accommodating the battery PACK 212, thereby integrating the battery module 21 and the phase change heat exchange assembly 3, making it easier to assemble and use and improving the heat exchange effect of the phase change heat exchange assembly 3.

[0070] It should be noted that this utility model does not impose any restrictions on the specific structure of the phase change heat transfer component 32. In practical applications, those skilled in the art can set the specific structure of the phase change heat transfer component 32 according to actual needs. For example, the phase change heat transfer component 32 can be a loop heat pipe, or it can be a loop heat pipe and an L-shaped gravity heat pipe, etc. Any adjustments or changes to the specific structure of the phase change heat transfer component 32 do not deviate from the basic principles of this utility model and should be limited to the protection scope of this utility model.

[0071] In one embodiment, please also refer to Figures 11 to 19 The phase change heat exchange component 32 includes a loop heat pipe 321, one part of which is connected to the heat exchange section 311, and the other part of which is connected to the drive section 312.

[0072] The phase change heat exchange component 32 is configured as a loop heat pipe 321. The loop heat pipe 321 has excellent temperature uniformity, which can make the temperature of each area of ​​the battery module 21 uniform and avoid large temperature differences between different areas of the battery module 21. In addition, this invention uses the phase change heat exchange component 32 to replace the conventional liquid cooling plate for heat exchange. It is a closed heat exchange component with no inlet / outlet liquid joints, eliminating the risk of joint leakage, and no external low-temperature coolant enters. During the heat exchange process, the temperature difference between the entire heat exchange component and the battery module 21 is small, which can reduce the probability of condensation.

[0073] It should be noted that this application does not impose any restrictions on the connection method between the loop heat pipe 321 and the heat exchange plate 31. In practical applications, those skilled in the art can set the connection method between the loop heat pipe 321 and the heat exchange plate 31 according to actual needs. Any adjustments or changes to the connection method between the loop heat pipe 321 and the heat exchange plate 31 do not deviate from the basic principles of this application and should be limited to the protection scope of this application.

[0074] In one feasible embodiment, the loop heat pipe 321 is a separate heat pipe, which is glued to the heat exchange plate 31 by thermally conductive adhesive.

[0075] In another feasible embodiment, the loop heat pipe 321 is a separate heat pipe, and the heat exchange plate 31 is provided with a slot, in which the loop heat pipe 321 is engaged.

[0076] In some preferred embodiments, please refer to Figure 12 At least a portion of the loop heat pipe 321 is integrally formed with the heat exchange plate 31, wherein the portion of the loop heat pipe 321 is formed by providing channels in the heat exchange plate 31.

[0077] It should also be noted that this application does not impose any restrictions on the specific structure of the loop heat pipe 321. As long as a portion of the loop heat pipe 321 is disposed on the drive section 312 and a portion on the heat exchange section 311, and flow and heat exchange can be performed with the drive section 312 and the heat exchange section 311 serving as the cold and hot ends of each other, it is acceptable. In practical applications, those skilled in the art can design the specific structure of the loop heat pipe 321 according to actual needs. Any adjustments or changes to the structure of the loop heat pipe 321 that do not deviate from the basic principles of this application should be limited to the scope of protection of this application.

[0078] In one embodiment, please also refer to Figures 16 to 19The loop heat pipe 321 includes a microchannel 3211 and a capillary structure 3212 disposed within the microchannel 3211. The microchannel 3211 is a closed loop, and the microchannel 3211 is filled with a first phase change working fluid. The capillary structure 3212 is configured to enable the first phase change working fluid in the microchannel 3211 to evaporate and undergo phase change and gas-liquid separation to drive the first phase change working fluid to circulate within the microchannel 3211.

[0079] The loop heat pipe 321 is configured as a circulation pipe with a capillary structure 3212. Its structure is simple and small in size, making it convenient to set up and assemble.

[0080] In another embodiment, please also refer to Figures 11 to 15 The loop heat pipe 321 includes a micropipe 3211 forming a closed-loop circulation circuit and an evaporator 3213. The micropipe 3211 and evaporator 3213 are filled with a first phase change working fluid. The micropipe 3211 includes a first pipe and a second pipe connected in series. The first pipe is located on the heat exchange section 311, and the second pipe is located on the drive section 312. This configuration is simple in structure and provides good heat exchange performance.

[0081] Preferably, heating elements are provided on the outer wall of the evaporator 3213 to heat the evaporator 3213. The heating elements on the outer wall of the evaporator 3213 are used to heat the evaporator 3213 so that when the first phase change working medium starts its circulation, the heating elements cause the phase change working medium inside the evaporator 3213 to evaporate, thereby driving the gaseous working medium to start its circulation flow in the circulation loop.

[0082] In one specific embodiment, the first pipeline includes multiple first sub-pipelines, which are spaced apart along a first direction. The second pipeline includes multiple second sub-pipelines, which are also spaced apart along the first direction. The first and second sub-pipelines are staggered and connected in series in the first direction to form a micro-pipeline 3211. The first direction is the width direction of the heat exchange plate 31.

[0083] Preferably, the first phase change working medium is one or more of liquid ammonia, acetone, Freon, and water.

[0084] It should be noted that in practical applications, those skilled in the art can choose a suitable first 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 selected. Any adjustments or changes to the first phase change working medium do not deviate from the basic principles of this application and should be limited to the scope of protection of this application.

[0085] In some implementations, the first phase change working fluid is acetone.

[0086] In some preferred embodiments, the first phase change working fluid is liquid ammonia.

[0087] In some implementations, the first phase change working fluid is a mixture of water and acetone.

[0088] In another embodiment, please also refer to Figures 12 to 19 The phase change heat exchange component 32, in addition to the aforementioned loop heat pipe 321, also includes an L-shaped heat pipe 322. The heat exchange plate 31 is an L-shaped heat exchange plate, wherein the portion of the L-shaped heat exchange plate extending vertically is the driving section 312, and the portion extending horizontally is the heat exchange section 311. The L-shaped heat pipe 322 is filled with a second phase change working fluid. The L-shaped heat pipe 322 includes a vertically arranged condensing section 3221, a horizontally arranged evaporating section 3222, and an insulating section 3223 connecting the condensing section 3221 and the evaporating section 3222. The condensing section 3221 is arranged on the driving section 312, and the evaporating section 3222 is arranged on the heat exchange section 311.

[0089] It should be noted that this application does not impose any restrictions on the connection method between the L-shaped heat pipe 322 and the heat exchange plate 31. In practical applications, those skilled in the art can set the connection method between the L-shaped heat pipe 322 and the heat exchange plate 31 according to actual needs. Adjustments and changes to the connection method between the L-shaped heat pipe 322 and the heat exchange plate 31 do not deviate from the basic principles of this application and should be limited to the protection scope of this application.

[0090] In one feasible embodiment, the L-shaped heat pipe 322 is a separate heat pipe, which is glued to the heat exchange plate 31 by thermally conductive adhesive.

[0091] In another feasible embodiment, the L-shaped heat pipe 322 is a separate heat pipe, and the heat exchange plate 31 is provided with a slot, in which the L-shaped heat pipe 322 is engaged.

[0092] In some preferred embodiments, please refer to Figure 12 , Figure 14 , Figures 15 to 19 The L-shaped heat pipe 322 is integrally set with the heat exchange plate 31, wherein the L-shaped heat pipe 322 is formed by setting a channel in the heat exchange plate 31.

[0093] Preferably, the second phase change working medium is one or more of liquid ammonia, acetone, Freon, and water.

[0094] It should be noted that in practical applications, those skilled in the art can choose a suitable second 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 selected. Any adjustments or changes to the second phase change working medium do not depart from the basic principles of this application and should be limited to the scope of protection of this application.

[0095] In some implementations, the second phase change working fluid is acetone.

[0096] In some preferred embodiments, the second phase change working fluid is liquid ammonia.

[0097] In some implementations, the second phase change working fluid is a mixture of water and acetone.

[0098] Preferably, there are multiple L-shaped heat pipes 322, which are distributed at intervals along the first horizontal direction, and a partial loop heat pipe 321 is provided between each two adjacent L-shaped heat pipes 322, so that both the L-shaped heat pipes 322 and the loop heat pipes 321 can exchange heat with the entire area of ​​the heat exchange section 311.

[0099] The number of L-shaped heat pipes 322 is set to multiple, and the multiple L-shaped heat pipes 322 are distributed at intervals along the first horizontal direction. At least a portion of the loop heat pipes 321 are provided between two adjacent L-shaped heat pipes 322, so that the L-shaped heat pipes 322 and the loop heat pipes 321 can exchange heat with the entire area of ​​the heat exchange section 311, effectively improving the heat exchange efficiency.

[0100] In one embodiment, please also refer to Figure 14 and Figure 15 The L-shaped heat pipe 322 is provided with a capillary wick structure 3224 extending along its length. The capillary wick structure 3224 includes a gas channel 32241 and a liquid channel 32242, so that the second phase change working fluid can absorb heat and evaporate in the evaporation section 3222. The gas phase working fluid flows towards the condensation section 3221 in the gas channel 32241, and after releasing heat and condensing in the condensation section 3221, the liquid phase working fluid flows towards the evaporation section 3222 in the liquid channel 32242 under the action of gravity.

[0101] A capillary structure 3224 is provided inside the L-shaped heat pipe 322. The capillary structure 3224 includes a gas channel 32241 and a liquid channel 32242. By providing the capillary structure 3224 inside the L-shaped heat pipe 322, the gaseous working fluid flows in the gas channel 32241 when the second liquid working fluid evaporates. After flowing to the condensation section 3221, the gaseous working fluid contacts the pipe wall and condenses into a liquid working fluid. The liquid working fluid flows towards the evaporation section 3222 under the action of gravity in the liquid channel 32242, which can effectively improve the efficiency of gas-liquid separation, provide sufficient driving force, and improve the heat exchange effect.

[0102] It should be noted that this application does not impose any restrictions on the specific structure of the capillary wick structure 3224. As long as the capillary wick structure 3224 can provide a certain capillary force and gas-liquid phase channel, so that the liquid working medium can be smoothly evaporated and separated into gas and liquid when heated, in practical applications, those skilled in the art can set the specific structure of the capillary wick structure 3224 according to actual needs.

[0103] In one embodiment, as shown in the figure, the capillary wick structure 3224 has a petal-shaped cross-section. The gas channel 32241 extends along the length of the L-shaped heat pipe 322 and is coaxial with the L-shaped heat pipe 322. There are multiple liquid channels 32242, each extending along the length of the L-shaped heat pipe 322. The multiple liquid channels 32242 are evenly arranged around the gas channel 32241, and the liquid channels 32242 and the gas channel 32241 are connected through gaps.

[0104] The capillary wick structure 3224 is arranged in a petal shape, with liquid channels 32242 located outside the gas channel 32241 and multiple channels evenly arranged along the circumference of the gas channel 32241. This ensures that there is a channel for the liquid working fluid to flow at any position on the circumference of the gas channel 32241, which can effectively improve the heat exchange effect.

[0105] The cross-section of the liquid channel 32242 can be of any shape, such as heart-shaped, rhomboid, trapezoidal, circular, near-circular, polygonal, or triangular, as long as the liquid channel 32242 is connected to the gas channel 32241 through a gap. Those skilled in the art can set the shape of the liquid channel 32242 according to actual needs. The cross-section of the gas channel 32241 can also be of any shape, such as circular, elliptical, or polygonal. Preferably, the gas channel 32241 is circular to facilitate the setting of the liquid channel 32242.

[0106] In another embodiment, the capillary wick structure 3224 is a liquid-absorbing wick, and a through hole is provided at the center of the liquid-absorbing wick. The through hole forms a gas channel, and the body of the liquid-absorbing wick forms a liquid channel.

[0107] It should be noted that this application does not impose any restrictions on the specific structure of the heat source drive component 33, as long as the heat source drive component 33 can heat and cool the drive section 312. In practical applications, those skilled in the art can set the specific structure of the heat source drive component 33 according to actual needs. Adjustments and changes to the structure of the heat source drive component 33 do not deviate from the basic principles of this utility model and should be limited to the protection scope of this utility model.

[0108] In one implementation, please refer to Figures 9 to 13 The heat source / cold source driving component 33 is a semiconductor chip. Heating and cooling of the driving section 312 can be achieved by changing the direction of the current in the semiconductor chip. The semiconductor chip can be a single chip, located on one side of the driving section 312, or two chips can be connected to opposite sides of the driving section 312.

[0109] In another embodiment, please also refer to Figure 16 and Figure 19 The cold and heat source driving component 33 includes a cooling component 331 (e.g., fins, heat sink, liquid guide tube or semiconductor cooling chip) and a heating component 332 (e.g., heating chip or heating film). The cooling component 331 and the heating component 332 are both mounted on the driving section 312 and are used to cool and heat the driving section 312, respectively.

[0110] The number of cooling components 331 and heating components 332 and their relative positions to the drive section 312 are not limited, as long as the cooling components 331 and heating components 332 can respectively cool down and heat up the drive section 312. In practical applications, those skilled in the art can set the number of cooling components 331 and heating components 332 and their relative positions to the drive section 312 according to actual needs.

[0111] In one feasible implementation, please refer to Figure 19 There are multiple cooling elements 331 and multiple heating elements 332. The multiple cooling elements 331 and multiple heating elements 332 are located on the same side of the drive section 312, and the multiple cooling elements 331 and multiple heating elements 332 are staggered along the length direction of the drive section 312.

[0112] In another feasible implementation, please refer to Figure 16 There is one cooling element 331 and one heating element 332. The cooling element 331 and the heating element 332 are located on the same side of the driving section 312. The cooling element 331 and the heating element 332 are distributed at intervals along the width direction of the driving section 312, and both the cooling element 331 and the heating element 332 extend along the length direction of the heat transfer plate.

[0113] In another feasible embodiment, there is one cooling element 331 and one heating element 332, which are located on both sides of the drive section 312.

[0114] Preferably, please also refer to Figures 1 to 6 The cabinet 1 is equipped with an air inlet 101 and an air outlet 102. The temperature control chamber 112 is connected to the external environment through the air inlet 101 and the air outlet 102 so that the temperature control chamber 112 can exchange air with the external environment and use the ambient temperature to dissipate heat from the temperature control chamber 112, which can save costs.

[0115] It should be noted that this utility model does not impose any restrictions on the setting position of the air inlet 101 and the air outlet 102. As long as the air inlet 101 is mainly used for air intake and the air outlet 102 is mainly used for air exhaust, so that the air is circulated in the temperature control chamber 112 and then discharged, in practical applications, those skilled in the art can set the specific positions of the air inlet 101 and the air outlet 102 according to actual needs.

[0116] In one specific implementation, please refer to Figures 1 to 6 The air inlet 101 is located on the side wall of the cabinet 1, and the air outlet 102 is located on the top wall of the cabinet 1.

[0117] In another feasible embodiment, the air inlet 101 is located on the bottom wall of the cabinet 1, and the air outlet 102 is located on the top wall of the cabinet 1.

[0118] In another feasible embodiment, the air inlet 101 is located on the bottom wall of the cabinet 1, and the air outlet 102 is located on the side wall of the cabinet 1.

[0119] By positioning the air inlet 101 at the bottom and the air outlet 102 at the top, air can be drawn in from the bottom and expelled from the top, making it easier for the temperature control chamber 112 to circulate with the external environment.

[0120] In one embodiment, the air inlet 101 extends vertically, and the number of air inlets 101 corresponding to each temperature control chamber 112 is one or more.

[0121] In the second embodiment, please refer to Figure 5 Each temperature control chamber 112 has one corresponding air outlet 102, and the air outlet 102 extends along the second horizontal direction.

[0122] In the third embodiment, please refer to Figure 6 Each temperature control chamber 112 has multiple air outlets 102, which extend along the second horizontal direction and are distributed at intervals along the second horizontal direction.

[0123] Preferably, the battery energy storage cabinet also includes a cooling component disposed at the air inlet 101, which is used to cool the air entering the temperature control chamber 112 through the air inlet 101.

[0124] More preferably, there are multiple cooling components, with one cooling component provided at the air inlet 101 corresponding to each row of battery modules 2.

[0125] A cooling component is installed at the air inlet 101. When it is necessary to cool down the battery module 21, the air entering the air inlet 101 can be cooled down, thereby reducing the temperature of the gas entering the temperature control chamber 112 and improving the heat dissipation effect on the battery module 21.

[0126] Preferably, the battery energy storage cabinet also includes a heating component disposed at the air inlet 101, which is used to heat the air entering the temperature control chamber 112 through the air inlet 101.

[0127] More preferably, there are multiple heating components, with one heating component provided at the air inlet 101 corresponding to each row of battery modules 2.

[0128] Preferably, the battery energy storage cabinet also includes an air intake fan installed at the air inlet 101, which is used to draw air from the outside environment into the temperature control chamber 112 through the air inlet 101.

[0129] More preferably, there are multiple air intake fans, with one air intake fan installed at the air intake 101 corresponding to each row of battery modules 2.

[0130] Preferably, the battery energy storage cabinet also includes multiple exhaust fans installed at the air outlet 102, which are used to discharge the gas in the temperature control chamber 112 to the outside environment through the air outlet 102.

[0131] More preferably, there are multiple exhaust fans, with one exhaust fan installed at the air outlet 102 corresponding to each row of battery modules 2.

[0132] 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 battery energy storage cabinet, characterized in that, The battery energy storage cabinet includes a cabinet body (1), multiple rows of battery modules (2), and multiple phase change heat exchange components (3); The internal space of the cabinet (1) is divided into multiple compartments (11) by a first partition (4). The multiple compartments (11) are spaced apart along a first horizontal direction. Each compartment (11) is divided into a battery compartment (111) and a temperature control compartment (112) by a second partition (5). The battery compartment (111) and the temperature control compartment (112) are spaced apart along the first horizontal direction. The battery compartment (111) is a sealed compartment. Each of the battery compartments (111) contains at least one row of battery modules (2), each row of battery modules (2) includes multiple battery modules (21) spaced apart in a vertical direction, and each battery module (21) is connected to one of the phase change heat transfer components (3). The phase change heat exchange component (3) has a first heat exchange end (301) and a second heat exchange end (302). The phase change heat exchange component (3) passes through the second partition (5). The first heat exchange end (301) is connected to the battery module (21) so as to exchange heat with the battery module (21). The second heat exchange end (302) is located in the temperature control chamber (112).

2. The battery energy storage cabinet of claim 1, wherein, Each of the battery compartments (111) is provided with multiple rows of battery modules (2), which are spaced apart along a second horizontal direction, which is perpendicular to the first horizontal direction.

3. The battery energy storage cabinet of claim 1, wherein, Each of the battery modules (2) further includes a fixing frame (22), the fixing frame (22) having multiple receiving cavities (221) spaced apart along the vertical direction, and the battery module (21) is located in the receiving cavity (221).

4. The battery energy storage cabinet of claim 1, wherein, The battery module (21) includes a housing (211) and a battery pack (212). The phase change heat exchange assembly (3) includes a heat exchange plate (31) and a phase change heat exchange component (32) and a cold / heat source driving component (33) disposed on the heat exchange plate (31). The heat exchange plate (31) includes a heat exchange section (311) and a driving section (312) connected to each other. The heat exchange section (311) forms the first heat exchange end (301), and the driving section (312) forms the second heat exchange end (301). The housing (211) and the heat exchange section (311) form a sealed receiving space. The battery PACK (212) is located in the receiving space and connected to the heat exchange section (311). The hot and cold source drive unit (33) is installed on the drive section (312) and can heat the drive section (312) to make the drive section (312) a heat source, and can cool the drive section (312) to make the drive section (312) a cold source. A portion of the phase change heat exchange component (32) is located on the heat exchange section (311), and a portion is located on the drive section (312), so that the heat exchange section (311) and the battery PACK (212) can exchange heat through the phase change of the phase change working fluid; The heat exchange plate (31) penetrates the second partition (5), the heat exchange section (311) is located in the battery compartment (111), and the cold and heat source drive unit (33) and the drive section (312) are located in the temperature control chamber (112).

5. The battery energy storage cabinet of claim 4, wherein, The phase change heat exchange component (32) includes a loop heat pipe (321), a portion of which is connected to the heat exchange section (311), and the other portion of which is connected to the drive section (312).

6. The battery energy storage cabinet of claim 5, wherein, The loop heat pipe (321) includes a micropipe (3211) forming a closed loop and an evaporator (3213). The micropipe (3211) and the evaporator (3213) are filled with a first phase change working fluid. The micropipe (3211) includes a first pipe and a second pipe connected in series. The first pipe is disposed on the heat exchange section (311) and the second pipe is disposed on the drive section (312).

7. The battery energy storage cabinet of claim 5, wherein, The phase change heat exchange component (32) further includes an L-shaped heat pipe (322), and the heat exchange plate (31) is an L-shaped heat exchange plate, wherein the portion of the L-shaped heat exchange plate extending along the vertical direction is the driving section (312), and the portion extending along the first horizontal direction is the heat exchange section (311). The L-shaped heat pipe (322) is filled with a second phase change working fluid. The L-shaped heat pipe (322) includes a vertically arranged condensing section (3221), a horizontally arranged evaporating section (3222), and an adiabatic section (3223) connecting the condensing section (3221) and the evaporating section (3222). The condensing section (3221) is arranged on the driving section (312), and the evaporating section (3222) is arranged on the heat exchange section (311).

8. The battery energy storage cabinet of claim 7, wherein, The L-shaped heat pipe (322) is provided with a capillary wick structure (3224) extending along its length. The capillary wick structure (3224) includes a gas channel (32241) and a liquid channel (32242) so that the second phase change working fluid can absorb heat and evaporate in the evaporation section (3222). The gas phase working fluid flows towards the condensation section (3221) in the gas channel (32241), and after releasing heat and condensing in the condensation section (3221), the liquid phase working fluid flows towards the evaporation section (3222) in the liquid channel (32242) under the action of gravity.

9. The battery energy storage cabinet of any one of claims 1-8, wherein, The cabinet (1) is provided with an air inlet (101) and an air outlet (102), and the temperature control chamber (112) is connected to the external environment through the air inlet (101) and the air outlet (102).

10. The battery energy storage cabinet of claim 9, wherein, The battery energy storage cabinet also includes a cooling component disposed at the air inlet (101), which is used to cool the air entering the temperature control chamber (112) through the air inlet (101); And / or, the battery energy storage cabinet further includes a heating component disposed at the air inlet (101), the heating component being used to heat the air entering the temperature control chamber (112) through the air inlet (101); And / or, the battery energy storage cabinet also includes an air intake fan disposed at the air inlet (101), the air intake fan being used to draw air from the outside environment into the temperature control chamber (112) through the air inlet (101); And / or, the battery energy storage cabinet also includes an exhaust fan disposed at the air outlet (102), the exhaust fan being used to discharge the gas in the temperature control chamber (112) to the external environment through the air outlet (102).

Images