Air-cooled energy storage cabinet and thermal management system

Abstract

The utility model relates to the technical field of heat dissipation of energy storage cabinets, and discloses an air-cooled energy storage cabinet and a heat management system.The air-cooled energy storage cabinet comprises an air conditioner, a cabinet body, a first battery pack and a second battery pack, a first air inlet space, a second air inlet space and a third air inlet space in the cabinet body are all communicated with the first air outlet, the first battery pack and the first side wall are arranged at intervals to form a first air duct, the first air duct is communicated with the first air inlet space, and the second battery pack and the second side wall are arranged at intervals to form a second air duct; the second battery pack and the first battery pack are arranged at intervals to form a third air duct, the second air duct is communicated with the second air inlet space, the third air duct is communicated with the third air inlet space, and the area of an air inlet of the third air inlet space is larger than that of an air inlet of any one of the first air inlet space and the second air inlet space. Therefore, the temperature difference between the battery packs is reduced, and the consistency of the cycle life of each battery pack is maintained.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology for energy storage cabinets, and in particular to an air-cooled energy storage cabinet and thermal management system. Background Technology

[0002] With the rapid development of new energy technologies, air-cooled energy storage cabinets have been widely used in the field of battery pack charging technology.

[0003] In related technologies, air-cooled energy storage cabinets typically have two rows of battery packs, each with multiple battery cells. The cabinet also has pre-installed air-cooling channels. These channels guide the cool air supplied by the external air conditioner to each battery cell for heat exchange, and then discharge the heat-exchanged air through the return air channel to the air conditioner's return air vent. It should be noted that due to the limited space inside the cabinet, battery cells in different locations accumulate heat to varying degrees. Current air-cooling channel designs cannot effectively reduce the temperature difference between different areas inside the cabinet, resulting in a large temperature difference between the battery cells, which is detrimental to maintaining consistent cycle life of each battery cell. Utility Model Content

[0004] This application provides an air-cooled energy storage cabinet and thermal management system, which solves the technical problem of large temperature difference between the middle area and the two sides of the air-cooled energy storage cabinet, which helps to reduce the temperature difference between battery packs and thus helps to maintain the consistency of cycle life of each battery pack.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include:

[0006] In a first aspect, embodiments of this application provide an air-cooled energy storage cabinet, comprising:

[0007] The air conditioner has a first air outlet and a first air return outlet;

[0008] The cabinet has a first side wall and a second side wall arranged opposite to each other along the first direction. The cabinet also has an air intake space, which includes a first air intake space, a second air intake space and a third air intake space. The first air intake space, the second air intake space and the third air intake space are all connected to the first air outlet.

[0009] The first battery pack is installed inside the cabinet. Along the first direction, the first battery pack is spaced apart from the first side wall to form a first air duct. The first air duct is connected to the first air intake space.

[0010] The second battery pack is installed inside the cabinet. Along the first direction, the second battery pack is spaced apart from the second side wall to form a second air duct. The second battery pack is spaced apart from the first battery pack to form a third air duct. The second air duct is connected to the second air intake space, and the third air duct is connected to the third air intake space.

[0011] The air intake of the first battery pack is connected to the first air duct and the third air duct respectively, the air outlet of the first battery pack is connected to the first return air inlet, the air intake of the second battery pack is connected to the second air duct and the third air duct respectively, the air outlet of the second battery pack is connected to the first return air inlet, and the area of ​​the air inlet of the third air intake space is larger than the area of ​​the air inlet of either the first air intake space or the second air intake space.

[0012] The air-cooled energy storage cabinet proposed in the first aspect of this application allows for a larger volume of cooling air intake when the first air outlet of the air conditioner blows air into the first, second, and third air intake spaces simultaneously. Since the area of ​​the air intake in the third air intake space is larger than that of either the first or second air intake space, the third air intake space receives more cooling air. Furthermore, the third air intake space is connected to a third air duct, which is formed by the spaced-apart first and second battery packs. Therefore, the air conditioner can provide more cooling air intake to the intermediate area between the first and second battery packs in the air-cooled energy storage cabinet. This further reduces the temperature in the intermediate area of ​​the air-cooled energy storage cabinet, thereby reducing the temperature difference between the intermediate area and the areas on both sides of the cabinet. This, in turn, helps to reduce the temperature difference between the battery packs and maintain consistent cycle life for each battery pack.

[0013] Optionally, the cabinet also includes a first stop and a second stop, both of which are disposed in the air intake space. Along the first direction, the first stop and the second stop are at least partially spaced apart to divide the air intake space into a first air intake space, a second air intake space and a third air intake space.

[0014] The design of the first air intake space, the second air intake space, and the third air intake space can be realized by the positional relationship between the first stop and the second stop, which simplifies the division of the air intake space and helps to save costs.

[0015] Optionally, the first battery pack includes a plurality of first batteries arranged sequentially along the second direction, and the second battery pack includes a plurality of second batteries arranged sequentially along the second direction.

[0016] The air inlet of the first battery is connected to the first air duct and the third air duct respectively, and the air outlet of the first battery is connected to the first return air port. The air inlet of the second battery is connected to the second air duct and the third air duct respectively, and the air outlet of the second battery is connected to the first return air port. The air inlets of the multiple first batteries are configured as the air inlet of the first battery pack, the air outlets of the multiple first batteries are configured as the air outlet of the first battery pack, the air inlets of the multiple second batteries are configured as the air inlet of the second battery pack, and the air outlets of the multiple second batteries are configured as the air outlet of the second battery pack.

[0017] This configuration allows for better cooling of the higher-temperature area between the first and second batteries, thereby reducing the temperature difference between the batteries and helping to maintain consistent cycle life.

[0018] Optionally, each first battery includes a first housing and a first module disposed within the first housing. The air inlet of the first battery includes a first air inlet and a second air inlet. The first air inlet and the second air inlet are respectively disposed on two opposite side walls of the first housing along a first direction. The first air inlet is connected to a first air duct, and the second air inlet is connected to a third air duct.

[0019] Each second battery includes a second housing and a second module disposed within the second housing. The air inlet of the second battery includes a third air inlet and a fourth air inlet. The third air inlet and the fourth air inlet are respectively disposed on two opposite side walls of the second housing along a first direction. The third air inlet is connected to a second air duct, and the fourth air inlet is connected to the third air duct.

[0020] With this configuration, the cooling air from the second air duct can directly enter the second battery from the third air inlet to participate in the heat exchange of the second module, and the cooling air from the third air duct can directly enter the second battery from the fourth air inlet to participate in the heat exchange of the second module. This not only achieves the delivery of cooling air into the second battery, but also eliminates the need for connecting pipes and flow channels, reducing the loss of cooling air during delivery and improving the heat exchange efficiency of the second battery.

[0021] Optionally, the air-cooled energy storage cabinet also includes a first guide section, which is disposed in the first air duct and adapted to guide the cooling air to the first air inlet.

[0022] The air-cooled energy storage cabinet also includes a second guide section, which is located in the second air duct and is adapted to guide the cooling air to the third air inlet.

[0023] This configuration, through the guidance of the first guide section, increases the flow rate and volume of the cooling air entering the first battery, avoiding insufficient airflow and volume inside the first battery due to excessively high airflow in the first air duct, thereby improving the heat exchange efficiency of the cooling air inside the first battery and further reducing the temperature inside the first battery. Similarly, through the guidance of the second guide section, the flow rate and volume of the cooling air entering the second battery are increased, avoiding insufficient airflow and volume inside the second battery due to excessively high airflow in the second air duct, thereby improving the heat exchange efficiency of the cooling air inside the second battery and further reducing the temperature inside the second battery.

[0024] Optionally, along the second direction, the cabinet has a first end and a second end, with the air intake space located at the first end;

[0025] The first guide portion is constructed as a first arc-shaped plate and disposed on the first side wall. From the first end to the second end, the distance between the first arc-shaped plate and the corresponding first battery gradually decreases. The second guide portion is constructed as a second arc-shaped plate and disposed on the second side wall. From the first end to the second end, the distance between the second arc-shaped plate and the corresponding second battery gradually decreases.

[0026] With this configuration, when the cooling air from the first air duct is transported from the first end to the second end, it flows towards the first air inlet under the guidance of the arc surface of the first arc plate, thereby increasing the flow rate and volume of the cooling air flowing towards the first air inlet. This, in turn, helps to increase the flow rate and volume of the cooling air entering the first battery, thus improving the heat exchange efficiency of the cooling air within the first battery. Similarly, when the cooling air from the second air duct is transported from the first end to the second end, it flows towards the third air inlet under the guidance of the arc surface of the second arc plate, thereby increasing the flow rate and volume of the cooling air flowing towards the third air inlet. This, in turn, helps to increase the flow rate and volume of the cooling air entering the second battery, thus improving the heat exchange efficiency of the cooling air within the second battery.

[0027] Optionally, the air-cooled energy storage cabinet also includes a third guide section, which is disposed in the third air duct and adapted to guide the cooling air to the second air inlet.

[0028] The air-cooled energy storage cabinet also includes a fourth guide section, which is located in the third air duct and is adapted to guide the cooling air to the fourth air inlet.

[0029] This configuration, through the guidance of the third guide section, further increases the velocity and flow rate of the cooling air entering the first battery, further preventing insufficient air velocity and flow rate inside the first battery due to excessively high air velocity in the third air duct, thereby further improving the heat exchange efficiency of the cooling air in the first battery and helping to further reduce the temperature inside the first battery; through the guidance of the fourth guide section, the velocity and flow rate of the cooling air entering the second battery are further increased, further preventing insufficient air velocity and flow rate inside the second battery due to excessively high air velocity in the third air duct, thereby improving the heat exchange efficiency of the cooling air in the second battery and helping to further reduce the temperature inside the second battery.

[0030] Optionally, the third guide portion is constructed as a third arc-shaped plate and disposed on the corresponding first battery, and the distance between the third arc-shaped plate and the corresponding first battery gradually decreases from the first end to the second end;

[0031] The fourth guide section is constructed as a fourth arc-shaped plate and is disposed on the corresponding second battery. From the first end to the second end, the distance between the fourth arc-shaped plate and the corresponding second battery gradually decreases.

[0032] With this configuration, when the cooling air from the third air duct is transported from the first end to the second end, the cooling air flows towards the second air inlet under the guidance of the arc surface of the third arc plate, thereby further increasing the flow rate and volume of the cooling air flowing towards the second air inlet. This, in turn, helps to further increase the flow rate and volume of the cooling air entering the first battery, thus improving the heat exchange efficiency of the cooling air in the first battery. Furthermore, when the cooling air from the third air duct is transported from the first end to the second end, the cooling air flows towards the fourth air inlet under the guidance of the arc surface of the fourth arc plate, thereby further increasing the flow rate and volume of the cooling air flowing towards the third air inlet. This, in turn, helps to further increase the flow rate and volume of the cooling air entering the second battery, thus improving the heat exchange efficiency of the cooling air in the second battery.

[0033] Optionally, the air outlet of the first battery pack and the air outlet of the second battery pack are both connected to the first return air vent through the air outlet space;

[0034] The air-cooled energy storage cabinet also includes a partition plate, which is fixed to the cabinet to separate the air intake space from the air exhaust space.

[0035] With this configuration, the hot air exchanged inside the first and second batteries does not interfere with the intake air, and the partition separates the intake space from the exhaust space, thereby separating the hot and cold air and avoiding the risk of hot and cold air mixing.

[0036] Optionally, along the first direction, the size of the third air duct is larger than the size of either the first air duct or the second air duct.

[0037] This configuration, by increasing the size of the third air duct, can further increase the flow rate of cooling air within the third air duct, which is beneficial for further reducing the temperature between the first and second battery packs.

[0038] Secondly, embodiments of this application provide a thermal management system, including the air-cooled energy storage cabinet in the first aspect embodiment.

[0039] The thermal management system proposed in the second aspect of this application, by providing the aforementioned air-cooled energy storage cabinet, allows for a greater intake of cooling air when the first air outlet of the air conditioner simultaneously blows air into the first, second, and third air intake spaces. Since the area of ​​the air inlet of the third air intake space is larger than that of either the first or second air intake space, the third air intake space receives more cooling air. Furthermore, the third air intake space is connected to a third air duct, which is formed by the spaced-apart first and second battery packs. Therefore, the air conditioner can provide more cooling air to the intermediate area between the first and second battery packs in the air-cooled energy storage cabinet, further reducing the temperature in the intermediate area of ​​the cabinet. This reduces the temperature difference between the intermediate area and the areas on either side of the cabinet, thereby reducing the temperature difference between the battery packs and maintaining consistent cycle life for each battery pack. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a front view of an air-cooled energy storage cabinet provided in one embodiment of this application;

[0042] Figure 2 A side view of an air-cooled energy storage cabinet provided in one embodiment of this application;

[0043] Figure 3 A top view of an air-cooled energy storage cabinet provided in one embodiment of this application;

[0044] Figure 4 A cross-sectional view of an air-cooled energy storage cabinet provided in one embodiment of this application;

[0045] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0046] Figure 6 yes Figure 4 A magnified view of a section at point B in the middle;

[0047] Figure 7 yes Figure 4 A magnified view of a section at point C;

[0048] Figure 8 A perspective view of a third guide section provided in one embodiment of this application.

[0049] Figure 9 Rear view of an air-cooled energy storage cabinet provided for another embodiment of this application.

[0050] [Explanation of Labels in the Attached Image]

[0051] 100 air-cooled energy storage cabinet;

[0052] Air conditioner 1; First air outlet 11; First return air outlet 12;

[0053] Cabinet body 2; First side wall 21; Second side wall 22; Air inlet space 23; First air inlet space 231; Second air inlet space 232; Third air inlet space 233; First stop 24; Second stop 25; First end 26; Second end 27; Air outlet space 28; First air outlet sub-space 281; Second air outlet sub-space 282;

[0054] First battery pack 3; First battery 31; First housing 311; First air inlet 3111; Second air inlet 3112; First module 312;

[0055] Second battery pack 4; Second battery 41; Second housing 411; Third air inlet 4111; Fourth air inlet 4112; Second module 412;

[0056] First air duct 5;

[0057] Second air duct 6;

[0058] Third air duct 7;

[0059] First guide section 8;

[0060] Second guide section 9;

[0061] Third guide section 10;

[0062] Fourth guide section 20;

[0063] 30-inch partition plate;

[0064] Air outlet 40;

[0065] First direction X; second direction Y; third direction Z. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0067] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0068] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0069] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0070] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0071] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0072] With the rapid development of new energy technologies, air-cooled energy storage cabinets have been widely used in the field of battery pack charging technology.

[0073] In related technologies, air-cooled energy storage cabinets typically have two rows of battery packs, each with multiple battery cells. The cabinet also has pre-installed air-cooling channels. These channels guide the cool air supplied by the external air conditioner to each battery cell for heat exchange, and then discharge the heat-exchanged air through the return air channels to the air conditioner's return air vents. It should be noted that due to the small internal space of the cabinet, battery cells in different locations accumulate heat to varying degrees. Generally, the temperature in the middle area of ​​the air-cooled energy storage cabinet (the area between the two rows of battery packs) is usually higher than the temperature in the areas on both sides of the cabinet (the area between each row of battery packs and the side walls of the cabinet).

[0074] Current air-cooled energy storage cabinets are all designed with the average distribution of air volume as the standard. For example, there are generally two types of air conditioning cooling in air-cooled energy storage cabinets. The first type is a wall-mounted air conditioner, which delivers cold air directly to each battery pack through the front and rear air ducts inside the cabinet. The second type is a top-mounted air conditioner, which delivers cold air to each battery pack through the top air duct inside the cabinet. However, the air-cooling channels in the above two designs cannot effectively reduce the temperature difference between different areas inside the cabinet, resulting in a large temperature difference between each battery pack, which is not conducive to maintaining the consistency of the cycle life of each battery pack.

[0075] Based on this, this application proposes an air-cooled energy storage cabinet 100. When the first air outlet 11 of the air conditioner 1 blows air into the first air inlet space 231, the second air inlet space 232, and the third air inlet space 233 simultaneously, since the area of ​​the air inlet of the third air inlet space 233 is larger than the area of ​​the air inlet of either the first air inlet space 231 or the second air inlet space 232, the third air inlet space 233 can obtain more cooling air intake. The third air inlet space 233 is connected to the third air duct 7, and the third air duct 7 is the air duct formed by the spaced-apart first battery pack 3 and second battery pack 4. Therefore, the air conditioner 1 can provide more cooling air intake to the middle area of ​​the first battery pack 3 and second battery pack 4 in the air-cooled energy storage cabinet 100, which is conducive to further reducing the temperature of the middle area of ​​the air-cooled energy storage cabinet 100, thereby reducing the temperature difference between the middle area of ​​the air-cooled energy storage cabinet 100 and the areas on both sides of the air-cooled energy storage cabinet 100, which is conducive to reducing the temperature difference between the battery packs and maintaining the consistency of the cycle life of each battery pack.

[0076] The following description, with reference to the accompanying drawings, illustrates an embodiment of the air-cooled energy storage cabinet 100 and its thermal management system.

[0077] like Figures 1-9 As shown, the air-cooled energy storage cabinet 100 according to the first aspect embodiment of this application includes: an air conditioner 1, a cabinet 2, a first battery pack 3, and a second battery pack 4.

[0078] The air conditioner 1 has a first air outlet 11 and a first return air outlet 12. Along the first direction X, the cabinet 2 has a first side wall 21 and a second side wall 22 arranged opposite to each other. The cabinet 2 also has an air intake space 23, which includes a first air intake space 231, a second air intake space 232, and a third air intake space 233. All three air intake spaces 231, 232, and 233 are connected to the first air outlet 11. A first battery pack 3 is disposed within the cabinet 2. Along the first direction X, the first battery pack 3 is spaced apart from the first side wall 21 to form a first air duct 5. The first air duct 5 is connected to the first air intake space 231. A second battery pack 4 is disposed within the cabinet 2. Along the first direction X, the first... The second battery pack 4 is spaced apart from the second sidewall 22 to form a second air duct 6. The second battery pack 4 is spaced apart from the first battery pack 3 to form a third air duct 7. The second air duct 6 is connected to the second air inlet space 232, and the third air duct 7 is connected to the third air inlet space 233. The air inlet of the first battery pack 3 is connected to the first air duct 5 and the third air duct 7 respectively, and the air outlet of the first battery pack 3 is connected to the first return air inlet 12. The air inlet of the second battery pack 4 is connected to the second air duct 6 and the third air duct 7 respectively, and the air outlet of the second battery pack 4 is connected to the first return air inlet 12. The area of ​​the air inlet of the third air inlet space 233 is larger than the area of ​​the air inlet of either the first air inlet space 231 or the second air inlet space 232.

[0079] Specifically, such as Figure 4 As shown, an installation space is formed inside the cabinet 2. The first battery pack 3 and the second battery pack 4 are both installed within this space. Along the first direction X, the cabinet 2 has a first sidewall 21 and a second sidewall 22 arranged opposite to each other. The first battery pack 3 and the first sidewall 21 are spaced apart along the first direction X to form a first air duct 5. The second battery pack 4 and the second sidewall 22 are spaced apart along the first direction X to form a second air duct 6. The second battery pack 4 and the first battery pack 3 are spaced apart along the first direction X to form a third air duct 7. In other words, along the first direction X, the cabinet 2 sequentially contains the first air duct 5, the first battery pack 3, the third air duct 7, the second battery pack 4, and the second air duct 6. It can be understood that the first air duct 5 and the third air duct 7 are isolated by the first battery pack 3, and the second air duct 6 and the third air duct 7 are isolated by the second battery pack 4. Furthermore, the first air duct 5, the second air duct 6, and the third air duct 7 all extend longitudinally along the height direction of the air-cooled energy storage cabinet 100.

[0080] Furthermore, the first air outlet 11 of the air conditioner 1 is connected to the first air inlet space 231, the second air inlet space 232, and the third air inlet space 233 within the cabinet 2. The first air inlet space 231 is connected to the first air duct 5, the second air duct 6 is connected to the second air inlet space 232, and the third air duct 7 is connected to the third air inlet space 233. With this configuration, the cooling air delivered by the air conditioner 1 can enter the first air duct 5 through the first air inlet space 231, the second air duct 6 through the second air inlet space 232, and the third air duct 7 through the third air inlet space 233, respectively.

[0081] Furthermore, the air inlet of the first battery pack 3 is connected to the first air duct 5 and the third air duct 7 respectively, and the air outlet of the first battery pack 3 is connected to the first return air vent 12. That is to say, the cooling air supplied by the air conditioner 1 to the first air duct 5 and the third air duct 7 can be delivered into the first battery pack 3 through the air inlet of the first battery pack 3 and participate in heat exchange. The gas after heat exchange can be delivered to the first return air vent 12 of the air conditioner 1 through the air outlet of the first battery pack 3 and discharged. Similarly, the air inlet of the second battery pack 4 is connected to the second air duct 6 and the third air duct 7 respectively, and the air outlet of the second battery pack 4 is connected to the first return air vent 12. That is to say, the cooling air supplied by the air conditioner 1 to the second air duct 6 and the third air duct 7 can be delivered into the second battery pack 4 through the air inlet of the second battery pack 4 and participate in heat exchange. The gas after heat exchange can be delivered to the first return air vent 12 of the air conditioner 1 through the air outlet of the second battery pack 4 and discharged, thereby achieving cooling treatment for the first battery pack 3 and the second battery pack 4.

[0082] It should be noted that in some embodiments of this application, the heat between the first battery pack 3 and the second battery pack 4 is concentrated in the middle of the air-cooled energy storage cabinet 100. Compared with the heat between the first battery pack 3 and the first side wall 21 and the heat between the second battery pack 4 and the second side wall 22, since only the first battery pack 3 generates heat between the first battery pack 3 and the first side wall 21, and only the second battery pack 4 generates heat between the second battery pack 4 and the second side wall 22, the heat between the first battery pack 3 and the second battery pack 4 is significantly higher than the heat between the first battery pack 3 and the first side wall 21 and the heat between the second battery pack 4 and the second side wall 22.

[0083] Based on this, in some embodiments of this application, by setting the area of ​​the air inlet of the third air inlet space 233 to be larger than the area of ​​the air inlet of either the first air inlet space 231 or the second air inlet space 232, it can be ensured that the cooling air intake volume obtained by the third air inlet space 233 is greater than the cooling air intake volume obtained by either the first air inlet space 231 or the second air inlet space 232. This ensures that the third air duct 7 can obtain more cooling air, which is beneficial for cooling the area between the first battery pack 3 and the second battery pack 4. That is, it is beneficial for further reducing the temperature of the middle area of ​​the air-cooled energy storage cabinet 100, thereby reducing the temperature difference between the middle area of ​​the air-cooled energy storage cabinet 100 and the areas on both sides of the air-cooled energy storage cabinet 100, which in turn helps to reduce the temperature difference between the battery packs and helps to maintain the consistency of the cycle life of each battery pack.

[0084] In some embodiments of this application, the air inlets of the first air inlet space 231, the second air inlet space 232, and the third air inlet space 233 are all arranged opposite to the first air outlet 11 of the air conditioner 1. The area of ​​the air inlets of the first air inlet space 231, the second air inlet space 232, and the third air inlet space 233 is the area of ​​the air inlets of the first air inlet space 231, the second air inlet space 232, and the third air inlet space 233 projected toward the first air outlet 11 and overlapping. If the overlapping area of ​​the air inlet and the first air outlet 11 is rectangular, then the area of ​​the air inlet is the area of ​​the rectangle. If the overlapping area of ​​the air inlet and the first air outlet 11 is circular, then the area of ​​the air inlet is the area of ​​the circle.

[0085] In summary, the air-cooled energy storage cabinet 100 proposed in the first aspect embodiment of this application, when the first air outlet 11 of the air conditioner 1 blows air into the first air inlet space 231, the second air inlet space 232, and the third air inlet space 233 simultaneously, can obtain more cooling air intake because the area of ​​the air inlet of the third air inlet space 233 is larger than the area of ​​the air inlet of either the first air inlet space 231 or the second air inlet space 232. Furthermore, the third air inlet space 233 is connected to the third air duct 7, and the first... The three-air duct 7 is the air duct formed by the first battery pack 3 and the second battery pack 4 arranged at intervals. Therefore, the air conditioner 1 can provide more cooling air intake to the middle area of ​​the first battery pack 3 and the second battery pack 4 in the air-cooled energy storage cabinet 100, which is conducive to further reducing the temperature of the middle area of ​​the air-cooled energy storage cabinet 100, thereby reducing the temperature difference between the middle area of ​​the air-cooled energy storage cabinet 100 and the areas on both sides of the air-cooled energy storage cabinet 100, which in turn helps to reduce the temperature difference between the battery packs and helps to maintain the consistency of the cycle life of each battery pack.

[0086] In some embodiments of this application, such as Figure 3As shown, the cabinet 2 also includes a first stop 24 and a second stop 25. The first stop 24 and the second stop 25 are both disposed in the air inlet space 23. Along the first direction X, the first stop 24 and the second stop 25 are at least partially spaced apart to divide the air inlet space 23 into a first air inlet space 231, a second air inlet space 232 and a third air inlet space 233.

[0087] Specifically, the air intake space 23 is also provided with a first stop 24 and a second stop 25 spaced apart along the first direction X, such as Figure 3 As shown, both the first stop 24 and the second stop 25 can be constructed as V-shaped stops composed of two mounting plates with an included angle. The connection between the two mounting plates forms a V-shaped tip, and the V-shaped tips of the two V-shaped stops are respectively arranged opposite to the first air outlet 11 of the air conditioner 1. The first stop 24 is located between the first air duct 5 and the third air duct 7, and the second stop 25 is located between the second air duct 6 and the third air duct 7. Both the first stop 24 and the second stop 25 extend along the height direction of the air-cooled energy storage cabinet 100 and are installed between the cabinet 2 and the first battery pack 3. With this arrangement, the first stop 24 and the first side wall 21 together form a first air inlet space 231, the second stop 25 and the second side wall 22 together form a second air inlet space 232, and the first stop 24 and the second stop 25 together form a third air inlet space 233.

[0088] It is understandable that adjusting the distance between the two V-shaped baffles can adjust the distance between their V-shaped tips, thereby adjusting the area of ​​the air inlet of the third air inlet space 233. Specifically, by adjusting the distance between the first baffle 24 and the second baffle 25, the area of ​​the air inlet of the third air inlet space 233 can be ensured to be larger than the area of ​​the air inlet of either the first air inlet space 231 or the second air inlet space 232. This configuration allows for the design of the first air inlet space 231, the second air inlet space 232, and the third air inlet space 233 simply by adjusting the positional relationship of the first baffle 24 and the second baffle 25, simplifying the division of the air inlet space 23 and saving costs.

[0089] In some embodiments of this application, such as Figure 1 and Figure 4As shown, the first battery pack 3 includes multiple first batteries 31 arranged sequentially along the second direction Y, and the second battery pack 4 includes multiple second batteries 41 arranged sequentially along the second direction Y. The air inlet of the first battery 31 is connected to the first air duct 5 and the third air duct 7 respectively, and the air outlet 40 of the first battery 31 is connected to the first return air port 12. The air inlet of the second battery 41 is connected to the second air duct 6 and the third air duct 7 respectively, and the air outlet 40 of the second battery 41 is connected to the first return air port 12. The air inlet of the multiple first batteries 31 is configured as the air inlet of the first battery pack 3, the air outlet 40 of the multiple first batteries 31 is configured as the air outlet of the first battery pack 3, the air inlet of the multiple second batteries 41 is configured as the air inlet of the second battery pack 4, and the air outlet 40 of the multiple second batteries 41 is configured as the air outlet of the second battery pack 4.

[0090] Specifically, such as Figure 4 As shown, the second direction Y is perpendicular to the first direction X. The second direction Y is the height direction of the air-cooled energy storage cabinet 100. Along the second direction Y, the first battery pack 3 includes a plurality of first batteries 31 arranged in sequence, and the second battery pack 4 includes a plurality of second batteries 41 arranged in sequence. It can be understood that each first battery 31 has an air inlet and an air outlet 40. The air inlet of the first battery 31 is connected to the first air duct 5 and the third air duct 7, respectively, and the air outlet 40 of the first battery 31 is connected to the first return air vent 12. Similarly, each second battery 41 has an air inlet and an air outlet 40. The air inlet of the second battery 41 is connected to the second air duct 6 and the third air duct 7, respectively, and the air outlet 40 of the second battery 41 is connected to the second return air vent.

[0091] Furthermore, there is no gap between two adjacent first batteries 31, thereby preventing the first air duct 5 and the third air duct 7 from connecting through the gap between two adjacent first batteries 31. Similarly, there is no gap between two adjacent second batteries 41, thereby preventing the second air duct 6 and the third air duct 7 from connecting through the gap between two adjacent second batteries 41. With this configuration, when the air conditioner 1 delivers cooling air to the first air intake space 231, the second air intake space 232, and the third air intake space 233 respectively, it ensures that the cooling air from the first air duct 5 and the third air duct 7 enters the corresponding first battery 31 through the air intake end of each first battery 31, and that the cooling air from the second air duct 6 and the third air duct 7 enters the corresponding second battery 41 through the air intake end of each second battery 41. The cooling air in the first battery 31 participates in heat exchange and is then delivered from the air outlet end 40 of the first battery 31 to the first return air vent 12 of the air conditioner 1 and discharged. The cooling air in the second battery 41 participates in heat exchange and is then delivered from the air outlet end 40 of the second battery 41 to the first return air vent 12 of the air conditioner 1 and discharged. This achieves cooling treatment for each first battery 31 in the first battery pack 3 and for each second battery 41 in the second battery pack 4.

[0092] Furthermore, since the area of ​​the air inlet of the third air inlet space 233 is larger than the area of ​​the air inlet of either the first air inlet space 231 or the second air inlet space 232, the third air duct 7 can obtain more cooling air intake, thereby enabling better cooling of the area with higher temperature between the first battery 31 and the second battery 41, which in turn helps to reduce the temperature difference between the batteries and maintain the consistency of the cycle life of each battery.

[0093] It should be noted that both the air outlet 40 of the first battery 31 and the air outlet 40 of the second battery 41 are equipped with exhaust fans. When air is delivered to the cabinet 2 for cooling, the exhaust fans are activated, which can accelerate the discharge of the gas after heat exchange in the first battery 31 and the second battery 41, and help improve the heat exchange efficiency.

[0094] In some embodiments of this application, such as Figures 4-7 As shown, each first battery 31 includes a first housing 311 and a first module 312 disposed within the first housing 311. The air inlet of the first battery 31 includes a first air inlet 3111 and a second air inlet 3112. The first air inlet 3111 and the second air inlet 3112 are respectively disposed on two opposite side walls of the first housing 311 along the first direction X. The first air inlet 3111 is connected to the first air duct 5, and the second air inlet 3112 is connected to the third air duct 7. Each second battery 41 includes a second housing 411 and a second module 412 disposed within the second housing 411. The air inlet of the second battery 41 includes a third air inlet 4111 and a fourth air inlet 4112. The third air inlet 4111 and the fourth air inlet 4112 are respectively disposed on two opposite side walls of the second housing 411 along the first direction X. The third air inlet 4111 is connected to the second air duct 6, and the fourth air inlet 4112 is connected to the third air duct 7.

[0095] Specifically, the first battery 31 comprises a first housing 311 and a first module 312, the first module 312 being disposed within the first housing 311. The first housing 311 has two opposing sidewalls along a first direction X, such as... Figure 5 and Figure 7As shown, the first housing 311 has a first air inlet 3111 on its side wall near the first air duct 5, and a second air inlet 3112 on its side wall near the third air duct 7. Both the first air inlet 3111 and the second air inlet 3112 extend along the third direction Z. The first air inlet 3111 and the second air inlet 3112 have air inlets, and there can be multiple air inlets, which can be arranged sequentially and at intervals along the third direction Z. With this configuration, the cooling air from the first air duct 5 can directly enter the first battery 31 from the first air inlet 3111 to participate in the heat exchange of the first module 312, and the cooling air from the third air duct 7 can directly enter the first battery 31 from the second air inlet 3112 to participate in the heat exchange of the first module 312. This not only realizes the delivery of cooling air to the first battery 31, but also eliminates the need for connecting pipes and flow channels, reducing the loss of cooling air during delivery and improving the heat exchange efficiency of the first battery 31.

[0096] Similarly, the second battery 41 consists of a second housing 411 and a second module 412, with the second module 412 disposed within the second housing 411. The second housing 411 has two opposing sidewalls along the first direction X, such as... Figure 6 and Figure 7 As shown, the second housing 411 has a third air inlet 4111 on its side wall near the second air duct 6, and a fourth air inlet 4112 on its side wall near the third air duct 7. Both the third air inlet 4111 and the fourth air inlet 4112 extend along the third direction Z. Furthermore, the third air inlet 4111 and the fourth air inlet 4112 have air inlets, and there can be multiple air inlets, which can be arranged sequentially and at intervals along the third direction Z. With this configuration, the cooling air from the second air duct 6 can directly enter the second battery 41 from the third air inlet 4111 to participate in the heat exchange of the second module 412, and the cooling air from the third air duct 7 can directly enter the second battery 41 from the fourth air inlet 4112 to participate in the heat exchange of the second module 412. This not only realizes the delivery of cooling air into the second battery 41, but also eliminates the need for connecting pipes and flow channels, reducing the loss of cooling air during delivery and improving the heat exchange efficiency of the second battery 41.

[0097] In some embodiments of this application, such as Figure 5 and Figure 6 As shown, the air-cooled energy storage cabinet 100 also includes a first guide section 8, which is disposed in the first air duct 5 and adapted to guide the cooling air to the first air inlet 3111. The air-cooled energy storage cabinet 100 also includes a second guide section 9, which is disposed in the second air duct 6 and adapted to guide the cooling air to the third air inlet 4111.

[0098] Specifically, such as Figure 5As shown, the first guide part 8 is fixedly disposed in the first air duct 5. Optionally, each first battery 31 is provided with a corresponding first guide part 8. It can be understood that each first battery 31 can be provided with one first guide part 8 or multiple first guide parts 8, and the multiple first guide parts 8 are arranged sequentially at intervals along the second direction Y. Each first guide part 8 extends along the third direction Z, so that the first guide part 8 guides the cooling air in the first air duct 5 to the first air inlet 3111. With this arrangement, the guiding of the first guide part 8 can increase the flow rate and flow of the cooling air entering the first battery 31, avoiding the situation where the air velocity and flow rate inside the first battery 31 are insufficient due to the excessive wind speed in the first air duct 5, thereby improving the heat exchange efficiency of the cooling air in the first battery 31 and helping to further reduce the temperature inside the first battery 31.

[0099] Furthermore, such as Figure 6 As shown, the second guide section 9 is fixedly disposed in the second air duct 6. Optionally, each second battery 41 is provided with a corresponding second guide section 9. It can be understood that each second battery 41 can be provided with one or more second guide sections 9. The multiple second guide sections 9 are arranged sequentially at intervals along the second direction Y. Each second guide section 9 extends along the third direction Z so that the second guide section 9 guides the cooling air in the second air duct 6 to the third air inlet 4111. With this arrangement, the guiding of the second guide section 9 can increase the flow rate and flow of the cooling air entering the second battery 41, avoiding the situation where the air velocity and flow rate inside the second battery 41 are insufficient due to the excessive air velocity in the second air duct 6. This improves the heat exchange efficiency of the cooling air in the second battery 41 and helps to further reduce the temperature inside the second battery 41.

[0100] It should be noted that the first guide portion 8 and the second guide portion 9 can be configured as guide plates, wherein at least a portion of the first guide portion 8 is inclined toward the direction close to the first battery 31, and at least a portion of the second guide portion 9 is inclined toward the direction of the second battery 41. Of course, the first guide portion 8 and the second guide portion 9 can also adopt other guide structures, which are not specifically limited here.

[0101] It is understandable that, since the temperature in the middle of the air-cooled energy storage cabinet 100 is relatively high, in some embodiments of this application, the first guide portion 8 and the second guide portion 9 can be provided only for the first battery 31 and the second battery 41 in the middle of the air-cooled energy storage cabinet 100. This arrangement satisfies the cooling requirements of the first battery 31 and the second battery 41 and saves costs.

[0102] In some embodiments of this application, such as Figures 1-6As shown, along the second direction Y, the cabinet 2 has a first end 26 and a second end 27. The air inlet space 23 is disposed at the first end 26. The first guide part 8 is constructed as a first arc-shaped plate and is disposed on the first side wall 21. From the first end 26 to the second end 27, the distance between the first arc-shaped plate and the corresponding first battery 31 gradually decreases. The second guide part 9 is constructed as a second arc-shaped plate and is disposed on the second side wall 22. From the first end 26 to the second end 27, the distance between the second arc-shaped plate and the corresponding second battery 41 gradually decreases.

[0103] Specifically, such as Figure 1 and Figure 2 As shown, the air intake space 23 of the air-cooled energy storage cabinet 100 is located at the first end 26 of the cabinet body 2, that is, at the upper part of the cabinet body 2. With this arrangement, the cooling air in the first air duct 5, the second air duct 6, and the third air duct 7 is delivered from top to bottom. In some embodiments of this application, such as... Figure 5 As shown, the first guide portion 8 is constructed as a first arc-shaped plate and is disposed on the first side wall 21. It can be understood that at least a part of the first guide portion 8 is constructed as a first arc-shaped plate, and the first guide portion 8 is fixedly installed on the first side wall 21. The fixed installation method includes, but is not limited to, bolt connection, etc. In this way, from the first end 26 to the second end 27, the distance between the first arc-shaped plate and the corresponding first battery 31 gradually decreases. That is to say, the first arc-shaped plate bends towards the first air inlet end 3111 of the first battery 31 and forms an arc-shaped surface. With this configuration, when the cooling air of the first air duct 5 is delivered from the first end 26 to the second end 27, the cooling air flows towards the first air inlet end 3111 under the guidance of the arc-shaped surface of the first arc-shaped plate, thereby increasing the flow rate and flow of the cooling air towards the first air inlet end 3111, which in turn helps to increase the flow rate and flow of the cooling air entering the first battery 31 and improves the heat exchange efficiency of the cooling air in the first battery 31.

[0104] Furthermore, in some embodiments of this application, such as Figure 6As shown, the second guide portion 9 is constructed as a second arc-shaped plate and is disposed on the second side wall 22. It can be understood that at least a portion of the second guide portion 9 is constructed as a second arc-shaped plate, and the second guide portion 9 is fixedly installed on the second side wall 22. The fixed installation method includes, but is not limited to, bolt connection. In this way, from the first end 26 to the second end 27, the distance between the second arc-shaped plate and the corresponding second battery 41 gradually decreases. That is to say, the second arc-shaped plate bends toward the third air inlet end 4111 of the second battery 41 and forms an arc-shaped surface. With this configuration, when the cooling air of the second air duct 6 is delivered from the first end 26 to the second end 27, the cooling air flows toward the third air inlet end 4111 under the guidance of the arc-shaped surface of the second arc-shaped plate, thereby increasing the flow rate and flow of the cooling air toward the third air inlet end 4111, which in turn helps to increase the flow rate and flow of the cooling air entering the second battery 41 and improves the heat exchange efficiency of the cooling air in the second battery 41.

[0105] In some embodiments of this application, such as Figure 7 As shown, the air-cooled energy storage cabinet 100 also includes a third guide section 10, which is disposed in the third air duct 7 and adapted to guide the cooling air to the second air inlet 3112. The air-cooled energy storage cabinet 100 also includes a fourth guide section 20, which is disposed in the third air duct 7 and adapted to guide the cooling air to the fourth air inlet 4112.

[0106] Specifically, the third guide section 10 is fixedly disposed within the third air duct 7. Optionally, each first battery 31 is provided with a corresponding third guide section 10. It can be understood that each first battery 31 can be provided with one or more third guide sections 10, and the multiple third guide sections 10 are arranged sequentially at intervals along the second direction Y (i.e., the up-down direction). Each third guide section 10 extends along the third direction Z (i.e., the front-back direction) so that the third guide section 10 guides the cooling air in the third air duct 7 to the second air inlet 3112. With this arrangement, the guiding of the third guide section 10 can further increase the flow rate and volume of the cooling air entering the first battery 31, further avoiding the situation where the air velocity and volume inside the first battery 31 are insufficient due to the excessive wind speed in the third air duct 7, thereby further improving the heat exchange efficiency of the cooling air in the first battery 31 and helping to further reduce the temperature inside the first battery 31.

[0107] Furthermore, the fourth guide section 20 is fixedly disposed within the third air duct 7. Optionally, each second battery 41 is provided with a corresponding fourth guide section 20. It is understood that each second battery 41 can be provided with one or more fourth guide sections 20. The multiple fourth guide sections 20 are arranged sequentially at intervals along the second direction Y. Each fourth guide section 20 extends along the third direction Z so that the fourth guide section 20 guides the cooling air in the third air duct 7 to the fourth air inlet 4112. With this arrangement, the guiding of the fourth guide section 20 can further increase the flow rate and volume of the cooling air entering the second battery 41, further avoiding the situation where the air velocity and volume inside the second battery 41 are insufficient due to the excessive air velocity in the third air duct 7, thereby improving the heat exchange efficiency of the cooling air in the second battery 41 and helping to further reduce the temperature inside the second battery 41.

[0108] It should be noted that the third guide portion 10 and the fourth guide portion 20 can be configured as guide plates, wherein at least a portion of the third guide portion 10 is inclined toward the direction close to the first battery 31, and at least a portion of the fourth guide portion 20 is inclined toward the direction of the second battery 41. Of course, the third guide portion 10 and the fourth guide portion 20 can also adopt other guide structures, which are not specifically limited here.

[0109] It is understandable that, since the temperature in the middle of the air-cooled energy storage cabinet 100 is relatively high, in some embodiments of this application, the third guide portion 10 and the fourth guide portion 20 can be provided only for the first battery 31 and the second battery 41 in the middle of the air-cooled energy storage cabinet 100. This arrangement satisfies the cooling requirements of the first battery 31 and the second battery 41 and saves costs.

[0110] In some embodiments of this application, such as Figure 7 As shown, the third guide portion 10 is constructed as a third arc-shaped plate and is disposed on the corresponding first battery 31. From the first end 26 to the second end 27, the distance between the third arc-shaped plate and the corresponding first battery 31 gradually decreases. The fourth guide portion 20 is constructed as a fourth arc-shaped plate and is disposed on the corresponding second battery 41. From the first end 26 to the second end 27, the distance between the fourth arc-shaped plate and the corresponding second battery 41 gradually decreases.

[0111] Specifically, the third guide portion 10 is constructed as a third arc-shaped plate and is disposed on the first battery 31. It can be understood that, as... Figure 8As shown, at least a portion of the third guide portion 10 is constructed as a third arc-shaped plate, and the third guide portion 10 is fixedly installed on the first battery 31. The fixed installation method includes, but is not limited to, bolt connection. In the direction from the first end 26 to the second end 27, the distance between the third arc-shaped plate and the corresponding first battery 31 gradually decreases. That is, the third arc-shaped plate bends toward the second air inlet end 3112 of the first battery 31 and forms an arc-shaped surface. With this configuration, when the cooling air of the third air duct 7 is delivered from the first end 26 to the second end 27, the cooling air flows toward the second air inlet end 3112 under the guidance of the arc-shaped surface of the third arc-shaped plate, thereby further increasing the flow rate and flow of the cooling air toward the second air inlet end 3112, which in turn helps to further increase the flow rate and flow of the cooling air entering the first battery 31 and improves the heat exchange efficiency of the cooling air in the first battery 31.

[0112] Furthermore, in some embodiments of this application, the fourth guide portion 20 is constructed as a fourth arc-shaped plate and disposed on the second battery 41. It is understood that at least a portion of the fourth guide portion 20 is constructed as a fourth arc-shaped plate, and the fourth guide portion 20 is fixedly installed on the second battery 41. The fixed installation method includes, but is not limited to, bolt connection, etc. In this way, from the first end 26 to the second end 27, the distance between the fourth arc-shaped plate and the corresponding second battery 41 gradually decreases. That is, the fourth arc-shaped plate bends toward the fourth air inlet end 4112 of the fourth battery and forms an arc-shaped surface. With this configuration, when the cooling air of the third air duct 7 is delivered from the first end 26 to the second end 27, the cooling air flows toward the fourth air inlet end 4112 under the guidance of the arc-shaped surface of the fourth arc-shaped plate, thereby further increasing the flow rate and flow of the cooling air toward the third air inlet end 4111, which is conducive to further increasing the flow rate and flow of the cooling air entering the second battery 41 and improving the heat exchange efficiency of the cooling air in the second battery 41.

[0113] In some embodiments of this application, such as Figure 9 As shown, the air outlet of the first battery pack 3 and the air outlet of the second battery pack 4 are both connected to the first return air vent 12 through the air outlet space 28. The air-cooled energy storage cabinet 100 also includes a partition plate 30, which is fixed to the cabinet body 2 to separate the air inlet space 23 from the air outlet space 28.

[0114] Specifically, the cabinet 2 also forms an air outlet space 28 that communicates with the first return air vent 12 of the air conditioner 1. The air outlet space 28 includes a first air outlet subspace 281 and a second air outlet subspace 282, which are interconnected. Figure 2As shown, the first air outlet subspace 281 is the front air outlet subspace, and the second air outlet subspace 282 is the lower air outlet subspace. The air outlet of the first battery pack 3 and the air outlet of the second battery pack 4 are both connected to the front air outlet subspace. That is, each first battery 31 is connected to the front air outlet subspace through its outlet end, and each second battery 41 is connected to the front air outlet subspace through its outlet end. Furthermore, the front air outlet subspace is connected to the first return air vent 12 of the air conditioner 1 through the lower air outlet subspace. With this configuration, the hot air after heat exchange inside the first battery 31 and the second battery 41 is discharged from the first return air vent 12 of the air conditioner 1 through the front air outlet subspace and the lower air outlet subspace, achieving the effect of air intake at the top and exhaust at the bottom of the air-cooled energy storage cabinet 100, with the intake and exhaust not interfering with each other.

[0115] Furthermore, the air-cooled energy storage cabinet 100 also includes a partition plate 30, which is fixed to the cabinet body 2 to separate the air inlet space 23 from the air outlet space 28, thereby separating the hot and cold air and avoiding the risk of hot and cold air mixing. It is understood that the first air duct 5, the second air duct 6, and the third air duct 7 are also separated from the air outlet space 28.

[0116] In some embodiments of this application, such as Figure 3 and Figure 4 As shown, along the first direction X, the size of the third air duct 7 is larger than the size of either the first air duct 5 or the second air duct 6. That is, the width of the third air duct 7 is greater than the width of the first air duct 5 and the width of the second air duct 6. By increasing the size of the third air duct 7, the flow rate of cooling air within the third air duct 7 can be further increased, which is beneficial for further reducing the temperature between the first battery pack 3 and the second battery pack 4.

[0117] The thermal management system according to a second aspect of this application includes the air-cooled energy storage cabinet 100 of the first aspect embodiment.

[0118] The thermal management system proposed in the second aspect of this application, by providing the aforementioned air-cooled energy storage cabinet 100, allows the air conditioner 1 to simultaneously blow air into the first air intake space 231, the second air intake space 232, and the third air intake space 233. Since the area of ​​the air intake of the third air intake space 233 is larger than the area of ​​the air intake of either the first air intake space 231 or the second air intake space 232, the third air intake space 233 can receive a larger volume of cooling air. The third air intake space 233 is connected to the third air duct 7. The third air duct 7 is formed by the spaced-apart first battery pack 3 and second battery pack 4. Therefore, the air conditioner 1 can provide more cooling air intake to the middle area of ​​the first battery pack 3 and second battery pack 4 in the air-cooled energy storage cabinet 100, which is conducive to further reducing the temperature of the middle area of ​​the air-cooled energy storage cabinet 100, thereby reducing the temperature difference between the middle area of ​​the air-cooled energy storage cabinet 100 and the areas on both sides of the air-cooled energy storage cabinet 100, which in turn helps to reduce the temperature difference between the battery packs and helps to maintain the consistency of the cycle life of each battery pack.

[0119] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0120] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0121] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0122] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A wind-cooled energy storage cabinet, characterized in that, include: The air conditioner has a first air outlet and a first air return outlet; The cabinet, along a first direction, has a first side wall and a second side wall arranged opposite to each other. The cabinet also has an air intake space, which includes a first air intake space, a second air intake space and a third air intake space. The first air intake space, the second air intake space and the third air intake space are all connected to the first air outlet. A first battery pack is disposed inside the cabinet. Along the first direction, the first battery pack is spaced apart from the first side wall to form a first air duct. The first air duct is connected to the first air intake space. The second battery pack is disposed inside the cabinet. Along the first direction, the second battery pack is spaced apart from the second side wall to form a second air duct. The second battery pack is spaced apart from the first battery pack to form a third air duct. The second air duct is connected to the second air intake space, and the third air duct is connected to the third air intake space. The air inlet of the first battery pack is connected to the first air duct and the third air duct, respectively; the air outlet of the first battery pack is connected to the first return air inlet; the air inlet of the second battery pack is connected to the second air duct and the third air duct, respectively; the air outlet of the second battery pack is connected to the first return air inlet; and the area of ​​the air inlet of the third air inlet space is larger than the area of ​​the air inlet of either the first air inlet space or the second air inlet space.

2. The air-cooled energy storage cabinet according to claim 1, characterized in that, The cabinet also includes a first stop and a second stop, both of which are disposed in the air intake space. Along the first direction, the first stop and the second stop are at least partially spaced apart to divide the air intake space into a first air intake space, a second air intake space and a third air intake space.

3. The air-cooled energy storage cabinet according to claim 1, characterized in that, The first battery pack includes a plurality of first batteries arranged sequentially along a second direction, and the second battery pack includes a plurality of second batteries arranged sequentially along a second direction; The air inlet of the first battery is connected to the first air duct and the third air duct respectively, and the air outlet of the first battery is connected to the first return air port. The air inlet of the second battery is connected to the second air duct and the third air duct respectively, and the air outlet of the second battery is connected to the first return air port. The air inlets of the multiple first batteries are configured as the air inlet of the first battery pack, the air outlets of the multiple first batteries are configured as the air outlet of the first battery pack, the air inlets of the multiple second batteries are configured as the air inlet of the second battery pack, and the air outlets of the multiple second batteries are configured as the air outlet of the second battery pack.

4. The air-cooled energy storage cabinet according to claim 3, characterized in that, Each of the first batteries includes a first housing and a first module disposed within the first housing. The air inlet of the first battery includes a first air inlet and a second air inlet. The first air inlet and the second air inlet are respectively disposed on two opposite sidewalls of the first housing along a first direction. The first air inlet is connected to the first air duct, and the second air inlet is connected to the third air duct. Each of the second batteries includes a second housing and a second module disposed within the second housing. The air inlet of the second battery includes a third air inlet and a fourth air inlet. The third air inlet and the fourth air inlet are respectively disposed on two opposite sidewalls of the second housing along a first direction. The third air inlet is connected to the second air duct, and the fourth air inlet is connected to the third air duct.

5. The air-cooled energy storage cabinet according to claim 4, characterized in that, The air-cooled energy storage cabinet also includes a first guide section, which is disposed in the first air duct and is adapted to guide the cooling air to the first air inlet end. The air-cooled energy storage cabinet also includes a second guide section, which is disposed in the second air duct and adapted to guide the cooling air to the third air inlet.

6. The air-cooled energy storage cabinet according to claim 5, characterized in that, Along the second direction, the cabinet has a first end and a second end, and the air intake space is disposed at the first end; The first guide portion is constructed as a first arc-shaped plate and disposed on the first side wall. From the first end to the second end, the distance between the first arc-shaped plate and the corresponding first battery gradually decreases. The second guide portion is constructed as a second arc-shaped plate and disposed on the second side wall. From the first end to the second end, the distance between the second arc-shaped plate and the corresponding second battery gradually decreases.

7. The air-cooled energy storage cabinet according to claim 6, characterized in that, The air-cooled energy storage cabinet also includes a third guide section, which is disposed in the third air duct and is adapted to guide the cooling air to the second air inlet end; The air-cooled energy storage cabinet also includes a fourth guide section, which is disposed in the third air duct and is adapted to guide the cooling air to the fourth air inlet.

8. The air-cooled energy storage cabinet according to claim 7, characterized in that, The third guide portion is constructed as a third arc-shaped plate and is disposed on the corresponding first battery. From the first end to the second end, the distance between the third arc-shaped plate and the corresponding first battery gradually decreases. The fourth guide portion is constructed as a fourth arc-shaped plate and is disposed on the corresponding second battery. From the first end to the second end, the distance between the fourth arc-shaped plate and the corresponding second battery gradually decreases.

9. The air-cooled energy storage cabinet according to claim 1, characterized in that, Both the air outlet of the first battery pack and the air outlet of the second battery pack are connected to the first return air vent through the air outlet space. The air-cooled energy storage cabinet also includes a partition plate, which is fixed to the cabinet body to separate the air inlet space from the air outlet space.

10. The air-cooled energy storage cabinet according to claim 1, characterized in that, Along the first direction, the size of the third air duct is larger than the size of either the first air duct or the second air duct.

11. A thermal management system, characterized in that, Includes the air-cooled energy storage cabinet according to any one of claims 1-10.

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