Flow dividing and air uniformizing system, energy storage air cooling system and energy storage air cooling container

Abstract

The invention discloses a flow dividing and air uniformizing system, an energy storage air cooling system and an energy storage air cooling container. The flow-dividing and air-uniformizing system comprises a main flow-dividing device which comprises a first flow-dividing unit, a second flow-dividing unit, a third flow-dividing unit and a fourth flow-dividing unit, and the first flow-dividing unit at least divides airflow flowing through the first flow-dividing unit into n strands of airflow; the second flow dividing unit comprises 3n direction-changing air uniformizing channels, and one ends of the 3n direction-changing air uniformizing channels are at least used for receiving airflow. The third flow dividing unit is at least used for receiving airflow flowing out of the other ends of the 3n direction-changing air uniformizing channels; the fourth flow dividing unit at least receives 3n air flows flowing out of the third flow dividing unit and divides the 3n air flows into n groups to flow out; and the secondary flow dividing device at least receives n groups of air flows flowing out of the main flow dividing device and conveys the n groups of air flows to n second cooling positions. The shunting and air uniformizing system can achieve the effects of reducing the temperature difference between the batteries so as to reduce the generation of thermal stress and prolong the service life of the batteries.

Description

Technical Field

[0001] The invention relates to a flow-dividing and uniform air system, an energy storage air cooling system and an energy storage air cooling container, and belongs to the field of battery thermal management. Background Art

[0002] Energy storage technology is widely used in the fields of power grid peak regulation, renewable energy grid connection, distributed energy and emergency power, which effectively improves the flexibility and stability of the power system. At present, lithium battery energy storage technology is the most mature. In the future, with the decline of costs, technological progress and policy support, energy storage technology will play a greater role in the integration of energy Internet, electric vehicles and renewable energy, and the market prospects are broad.

[0003] Energy storage containers are the current mainstream energy storage products. The battery modules inside them need to be kept in an appropriate temperature range as a whole, and the temperature deviation between the battery modules must be reduced to reduce thermal stress, thereby extending the service life of the energy storage system. However, the existing battery cooling system inside the container is difficult to cool the batteries inside the container evenly and efficiently, which can easily cause more thermal stress between the battery modules, ultimately affecting the service life of the energy storage system. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a split-flow and uniform air system, an energy storage air cooling system and an energy storage air cooling container.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes:

[0006] An embodiment of the present invention provides a flow distribution and uniform air flow system, comprising:

[0007] A main flow splitting device, comprising a first flow splitting unit, a second flow splitting unit, a third flow splitting unit and a fourth flow splitting unit, wherein the first flow splitting unit is at least used to split the airflow flowing through the first flow splitting unit into 4×n airflows and transport them to the second flow splitting unit; the second flow splitting unit comprises a plurality of direction-changing uniform wind channels, one end of the plurality of direction-changing uniform wind channels is at least used to receive the airflow flowing through the first flow splitting unit; the third flow splitting unit is at least used to receive the airflow flowing out from the other end of the plurality of direction-changing uniform wind channels and divide it into 4×n groups; the fourth flow splitting unit is at least used to receive the 4×n groups of airflow flowing out of the third flow splitting unit, integrate them and divide them into 8×n airflows to flow out;

[0008] A secondary flow splitter is used to receive at least one airflow from the primary flow splitter and split it into 8×n airflows for delivery to 8×n cooling positions;

[0009] Wherein, n is a positive integer.

[0010] Furthermore, the first flow diversion unit includes a mirror-arranged air outlet grille, and the air outlet grille has 4×n first flow diversion channels arranged in parallel.

[0011] Furthermore, two adjacent first diversion channels are arranged in a staggered manner.

[0012] Furthermore, the number of the direction-changing and uniform air flow channels is 24×n, and one end of the direction-changing and uniform air flow channel receives the airflow flowing out of the 4×n first branch channels of the air outlet grille.

[0013] Furthermore, the direction-changing uniform air flow channel has at least one direction-changing structure in its extension direction, and the direction-changing structure is at least used to change the flow direction of the airflow.

[0014] Furthermore, the direction-changing structure is a bending structure formed along the extension direction of the direction-changing uniform air passage, and the bending structure has rounded corners.

[0015] Furthermore, the radius of the fillet is 20-100 mm.

[0016] Furthermore, the 24×n direction-changing uniform wind channels are bilaterally symmetrical in width, and the widths of two adjacent direction-changing uniform wind channels are equal, and the 24×n secondary tributaries can be divided into 4n parts, each with 6n branches.

[0017] Furthermore, the third flow diversion unit includes a flow diversion grid, which receives 24×n airflows flowing out from the other end of the direction-changing uniform air passage, and the flow diversion grid has 4×n flow diversion areas.

[0018] Furthermore, the 4×n diversion areas are mirror-symmetric in the horizontal and vertical directions.

[0019] Furthermore, the diversion area includes a plurality of air inlets, and the number of the air inlets included in each diversion area is the same.

[0020] Furthermore, the fourth flow splitting unit has 4n air inlets, and the air inlets are at least used to receive the airflow flowing out of the third flow splitting unit and evenly divide it into 8n airflows that flow out.

[0021] Furthermore, the 8n air inlets have the same diameter.

[0022] Further, the 8n air inlets are divided into 4n groups, and each group includes 2n air inlets.

[0023] Furthermore, the air inlets in the 4n group are mirror-symmetrical in both the horizontal and vertical directions.

[0024] Furthermore, the secondary flow diversion device includes 8n flow diversion ports, and the 8n air outlets respectively correspond to the 8n cooling positions.

[0025] Furthermore, the second flow splitting unit also includes a first flow splitting component, which is arranged at the upwind direction of the direction-changing uniform wind channel and is at least used to evenly divide the airflow into two parts.

[0026] Furthermore, the first flow dividing member includes a baffle or a guide plate.

[0027] Furthermore, the first shunt unit, the second shunt unit, the third shunt unit and the fourth shunt unit are two groups of mirror symmetry.

[0028] The embodiment of the present invention further provides an energy storage air cooling system, comprising:

[0029] An energy storage module, the energy storage module comprising 8n battery boxes;

[0030] An air cooling module includes the split and uniform air flow system and a refrigeration unit, wherein the refrigeration unit is at least used to provide air flow to the main split device.

[0031] Furthermore, the 8n cooling positions correspond one-to-one to the 8n battery boxes, respectively, and the cooling positions are located in the internal space of the battery box.

[0032] Furthermore, the battery box has a plurality of batteries arranged in an array in space, and 8n parallel cooling channels are formed between the batteries and between the batteries and the inner wall of the battery box, and the 8n cooling positions are respectively located in the 8n cooling channels.

[0033] The present invention also provides an energy storage air-cooling container, comprising the energy storage air-cooling system, including:

[0034] The energy storage module and the air cooling module are mirror-imaged inside the box, and a second diversion component is provided between two adjacent refrigeration units in the mirror-image arrangement, and the second diversion component is at least used to separate the airflow flowing out of the refrigeration unit and transport it to the two adjacent diversion and uniform air systems in the mirror-image arrangement.

[0035] Furthermore, the second flow dividing member includes a baffle or a guide plate.

[0036] Compared with the prior art, the advantages of the present invention include:

[0037] 1. The first flow splitter unit inside the main flow splitter device performs the first separation of the airflow to form 4×n airflows. The number of airflows formed by the second flow splitter unit and the first flow splitter unit has a specific relationship, which can ensure the uniformity of the airflow while ensuring the moderate airflow resistance. The airflow passes through the third flow splitter unit and the fourth flow splitter unit in turn, and finally flows into the designated position inside the battery box through the secondary flow splitter device, so that the batteries arranged in the array in the space can be evenly cooled and the temperature difference between the batteries can be reduced, thereby reducing the generation of thermal stress and extending the life of the battery;

[0038] 2. The extension direction of the variable direction uniform wind channel has several bending structures, so that the variable direction uniform wind channel can make full use of the space inside the container while achieving uniform wind;

[0039] 3. The energy storage air cooling system of the present invention not only optimizes the air flow distribution inside the air-cooled container, but also avoids thermal interference between the internal equipment of the air-cooled container. At the same time, the reasonable pipeline layout effectively improves the space utilization rate inside the air-cooled container, which not only ensures the uniform cooling of the battery module inside the air-cooled container, but also ensures the convenience of equipment maintenance and operation, so that the energy storage air cooling system still has the advantages of efficient heat dissipation and safe operation in a limited space;

[0040] 4. The split and uniform air flow system can achieve uniform air flow distribution within a large flow range by combining the second split unit with the first split unit, and can adapt to the heat dissipation requirements under different powers. Regardless of how the inlet conditions change (such as different flow rates and flow rates), it can ensure that the air flow in each area is evenly distributed to avoid local overheating problems. It has a wide range of applicability, not only suitable for the heat dissipation requirements of high-power energy storage systems, but also can flexibly respond to different usage environments and application scenarios, further improving the stability and safety of the system;

[0041] 5. The energy storage air-cooled container involved in the present invention is convenient for transportation and storage, and is convenient for mass production and market application. The use of standard containers not only reduces manufacturing and transportation costs, but also makes the installation, expansion and maintenance of the system more convenient, and can adapt to the needs of different scenarios. At the same time, the modular design of the container facilitates system combination and can be flexibly applied to various application scenarios such as power peak regulation, emergency power supply, distributed energy storage, etc., and has broad market prospects and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of an energy storage air-cooled container provided in a typical embodiment of the present invention;

[0043] Figure 2 It is a structural schematic diagram of a flow distribution and uniform air flow system for an energy storage air-cooled container provided in a typical embodiment of the present invention;

[0044] Figure 3 It is a schematic diagram of the structure and wind direction of the first diversion unit of the energy storage air-cooled container provided in a typical embodiment of the present invention;

[0045] Figure 4 It is a structural schematic diagram of a first flow distribution unit and a second flow distribution unit of an energy storage air-cooled container provided in a typical embodiment of the present invention;

[0046] Figure 5 It is a schematic diagram of the structure of a first angle and wind direction of a second diversion unit of an energy storage air-cooled container provided in a typical embodiment of the present invention;

[0047] Figure 6 It is a schematic diagram of the internal structure and wind direction of the second diversion unit of the energy storage air-cooled container provided in a typical embodiment of the present invention;

[0048] Figure 7 It is a schematic diagram of the second angle structure and wind direction of the second diversion unit of the energy storage air-cooled container provided in a typical embodiment of the present invention;

[0049] Figure 8 It is a structural schematic diagram of a third diversion unit of an energy storage air-cooled container provided in a typical embodiment of the present invention;

[0050] Fig. 9 It is a schematic diagram of the structure and wind direction of the fourth diversion unit of the energy storage air-cooled container provided in a typical embodiment of the present invention;

[0051] Fig.10 It is a structural schematic diagram of a secondary flow distribution unit of an energy storage air-cooled container provided in a typical embodiment of the present invention;

[0052] Fig.11 It is a schematic diagram of the internal structure of the battery box and its wind direction of an energy storage air-cooled container provided in a typical embodiment of the present invention.

[0053] Explanation of the reference numerals: 1. Main diverter device; 2. Direction-changing uniform air channel; 3. Secondary diverter device; 4. Air outlet grille; 5. First diverter channel; 6. Direction-changing structure; 7. Diverter grille; 8. Diverter area; 9. Air inlet; 10. Air inlet; 11. First diverter component; 12. Battery box; 13. Refrigeration unit; 14. Battery; 15. Cooling channel; 16. Box; 17. Second diverter component; 18. First diverter unit; 19. Second diverter unit; 20. Third diverter unit; 21. Fourth diverter unit; 22. Diverter port. DETAILED DESCRIPTION

[0054] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0055] Example

[0056] like Figure 1 As shown, this embodiment provides an energy storage air-cooled container, including a box body 16, wherein the box body 16 has a mirror-arranged energy storage module and an air-cooling module, wherein the energy storage module includes 8n battery boxes 12, wherein each battery box 12 has (2n*2+n)*2*2+4×n batteries 14, and the number of batteries in the battery box can be (2 to the power of N - 1)*m*k, where (2 to the power of N - 1) is the number of batteries contained in each layer and each battery column, and 2 is taken here, m is the number of battery layers, and k is the number of batteries contained in each row of batteries, and the values ​​of n, m, and k should be considered in actual application scenarios. To avoid the battery box being too large or too small, n is taken as 1 here (all parameters n in this embodiment are taken as 1, but in some other cases, the value of n can also be other positive integers), and is arranged in 3*4*2 space. The air cooling module includes a shunt and uniform air system and a refrigeration unit 13. The shunt and uniform air system is used to receive the airflow blown out by the refrigeration unit 13, and inside the shunt and uniform air system, the cold air is blown out by the refrigeration unit 13 so as to evenly flow into the battery box 12 while ensuring the uniformity of the airflow, so as to evenly cool the batteries 14 in the battery box 12 and reduce the generation of thermal stress.

[0057] like Figure 2-Figure 9 As shown, the flow distribution and uniform air flow system specifically includes four parts, namely a first flow distribution unit 18, two second flow distribution units 19, two third flow distribution units 20 and two fourth flow distribution units 21, and these four parts are arranged in sequence from the upwind direction to the downwind direction along the air flow blown out by the refrigeration unit 13, as shown in FIG. Figure 3-Figure 4 As shown, there are two first diversion units 18, which are mirror-set. The first diversion unit 18 includes an air outlet grille 4, and the air outlet grille 4 has four first diversion channels 5 arranged in parallel. That is to say, a diversion and uniform air system includes two first diversion units 18 that divide the airflow blown out from the refrigeration unit 13 into a total of 8 uniform streams. Matchingly, the second diversion unit 19, the third diversion unit 20 and the fourth diversion unit 21 are also two mirror-set, and a second diversion unit 19, a third diversion unit 20 and a fourth diversion unit 21 on one side of the mirror are responsible for receiving the airflow distributed by an air outlet grille 4.

[0058] As for the air outlet grille 4, two adjacent first diversion channels 5 are staggered, and two groups of first diversion channels 5 are arranged in parallel in the horizontal direction. That is to say, the purpose of the staggered arrangement of the first diversion channels 5 is to divide the airflow passing through the air outlet grille 4 into two upper and lower airflows in a plane perpendicular to the parallel direction, so as to make the distribution of the airflow more uniform.

[0059] Specific as Figure 5-Figure 7 As shown, the second diversion unit 19 includes (2n*2+n)*2*2+4×n redirection uniform wind channels 2, that is, 24×n redirection uniform wind channels 2. When the number of redirection uniform wind channels 2 is greater, the uniformity of the airflow passing through the redirection uniform wind channels 2 is better, but as a result, the resistance during the airflow flow is greater and the flow rate is slowed down. When n is 1, the second diversion unit 19 has a total of 24 redirection uniform wind channels 2. At this time, it can ensure that the resistance during the airflow flow is not too large (that is, the airflow rate is guaranteed) while maintaining good uniformity of the airflow passing through the redirection uniform wind channel 2. One end of the redirection uniform wind channel 2 receives the four first diversion channels of the air outlet grille 4. As for the airflow outflowing from the channel 5, it should be noted that when n is 1, the air outlet grille 4 diverts the airflow generated by the refrigeration unit 13 to form a uniform airflow, which can just be evenly diverted by the redirected uniform wind channel 2 into 24 airflows of equal width. In addition, since the diversion and uniform wind system of this embodiment is arranged inside the box body 16, and the length, width and height inside the box body 16 are limited, there are one or more redirecting structures 6 in the extension direction of the redirected uniform wind channel 2, that is, a bending structure is formed along the extension direction of the redirected uniform wind channel 2, and the bending part of the bending structure has rounded corners. When 24 airflows of equal width flow through the diverting structure 6, the pressure loss during the airflow change process can be greatly reduced.

[0060] The second diversion unit 19 also includes a first diversion component 11, which includes but is not limited to a baffle or a guide plate. The first diversion component 11 is arranged at the upwind direction of the changing direction uniform wind channel 2, and is used to evenly divide the airflow into two parts, thereby further improving the uniformity of the airflow flowing into the changing direction uniform wind channel 2.

[0061] Specific as Figure 8As shown, the third flow diversion unit 20 includes a flow diversion grille 7, which receives 24 air flows flowing out from the other end of the redirecting uniform air passage 2. The flow diversion grille 7 has 4×n flow diversion areas 8. When n is 1, the flow diversion grille 7 has 4 flow diversion areas 8. The 4 flow diversion areas 8 divide the 24 air flows into 6 groups on average. To achieve the purpose of evenly distributing the 24 air flows, each flow diversion area 8 has 6 air inlets 9, and the 4 flow diversion areas 8 are mirror-symmetrical in the horizontal and vertical directions. That is to say, when n is 1, the number of the flow diversion areas 8 can just The airflow flowing out of the second diversion unit 19 is evenly diverted into four groups of airflows that are symmetrical in the horizontal and vertical directions. In this embodiment, the six air inlets 9 set in each diversion area 8 just receive the six airflows in each group. The airflow passing through the third diversion unit 20 only groups the airflow flowing out of the second diversion unit 19 in the flow direction of the airflow, and ensures that each group has the same number of airflows. This setting can ensure the uniformity of the airflow distribution, forming a uniform airflow with sufficient flow rate and uniformity that meets the requirements, which flows into the fourth diversion unit 21.

[0062] Specific as Fig. 9 As shown, the fourth diversion unit 21 has 4n air inlets 10, and when n is 1, the fourth diversion unit 21 has 4 air inlets 10 with the same caliber, and the air inlets 10 are at least used to receive the airflow flowing out of the third diversion unit 20, and evenly divide it into 8 airflows flowing out, and the fourth diversion unit 21 is similar to the third diversion unit 20 in structure, that is, the 8 airflows are divided into 4 groups, each group includes 2 airflows, and the 4 groups of air inlets 10 are mirror-symmetrical in the horizontal and vertical directions, and when n is 1, the number of air inlets 10 is exactly the same as the number of battery boxes 12, and the 8 air inlets 10 correspond one by one to the 8 battery boxes 12, the fourth diversion unit 21 receives the uniform airflow flowing out of the third diversion unit 20, and divides an airflow into airflows matching the number of battery boxes 12, and respectively delivers them to the battery boxes 12 corresponding to each air inlet 10.

[0063] like Fig.10 As shown, the diversion and uniform air flow system also includes a secondary diversion device 3, and the secondary diversion device includes 8n diversion ports 22. When n is 1, the 8 diversion ports 22 correspond to 8 cooling positions one by one. The number of airflows of the secondary diversion device 3 is equal to the number of flow channels. There are 8 groups of flow channels in the box, so it is divided into 8 streams. Specifically, the distribution characteristics of the 8 diversion ports 22 are similar to the diversion grille 7 / air inlet 10. The 8 diversion ports 22 are divided into 4 groups, with 2 diversion ports 22 in each group. The 4 groups of diversion ports 22 are mirror-symmetrical in the horizontal and vertical directions. The 8 diversion ports 22 are used to receive one of the 8 airflows flowing out of the main diversion device 1, and evenly divert the airflow into 8 streams, and transport it to the 8 cooling positions inside the battery box 12 to cool the battery 14.

[0064] like Fig.11 As shown, it is a schematic diagram of the structure inside the battery box of the energy storage air-cooled container. When n is 1, each battery box 12 has 24 batteries 14, and they are arranged in 3*4*2 space. That is to say, the 24 batteries 14 are divided into two layers in the vertical direction, and each layer is a 3*4 battery 14 group. For one layer of battery 14 groups, 4 batteries 14 form a row, and there are 3 rows in total. It is defined that there are 2 cooling channels 15 between two adjacent rows of batteries 14, and there are 2 cooling channels 15 between the two edge rows of batteries 14 and the inner wall of the battery box 12, and there are 4 cooling channels 15 in total, and the battery 14 group is two layers. That is, there are 8 cooling channels 15 in a battery box 12. The airflow flowing out from the fourth diversion unit 21 flows into the battery box 12, and is evenly diverted into 8 airflows by the secondary diversion device 3 and transported to 8 cooling positions respectively. Specifically, the 8 cooling positions are respectively located in the 8 cooling channels 15, and cool a total of 6 columns of batteries 14 in two layers. In this way, since the flow rate and flow velocity of the 8 airflows cooling the 6 columns of batteries 14 are the same, uniform cooling of the 6 columns of batteries 14 is ensured, and the temperature difference between the batteries 14 is reduced, thereby reducing the generation of thermal stress and extending the life of the battery 14.

[0065] It should also be noted that there is a second diversion component 17 between two adjacent refrigeration units 13 in a mirror-like arrangement. The second diversion component 17 includes but is not limited to a baffle or a guide plate. The second diversion component 17 is used to separate the airflow flowing out of the refrigeration unit 13 and transport it to two adjacent diversion and uniform air systems in a mirror-like arrangement, which can further ensure the uniformity of the airflow.

[0066] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A split flow uniform air system, characterized in that: include: A main flow splitting device (1), comprising a first flow splitting unit (18), a second flow splitting unit (19), a third flow splitting unit (20) and a fourth flow splitting unit (21), wherein the first flow splitting unit (18) is at least used to split the airflow flowing through the first flow splitting unit (18) into 4×n airflows and transport them to the second flow splitting unit (19); the second flow splitting unit (19) comprises a plurality of direction-changing uniform air channels (2), one end of the plurality of direction-changing uniform air channels (2) is at least used to receive the airflow flowing through the first flow splitting unit (18); the third flow splitting unit (20) is at least used to receive the airflow flowing out from the other end of the plurality of direction-changing uniform air channels (2) and split it into 4×n groups; the fourth flow splitting unit (21) is at least used to receive the 4×n groups of airflow flowing out of the third flow splitting unit (20), integrate them and split them into 8×n airflows for outflow; A secondary flow dividing device (3) is used to receive at least one airflow flowing out of the primary flow dividing device (1) and divide it into 8×n airflows and transport them to 8×n cooling positions; Wherein, n is a positive integer.

2. The split flow and uniform air flow system according to claim 1, characterized in that: The first flow diversion unit (18) comprises an air outlet grille (4) arranged in a mirror image, wherein the air outlet grille (4) has 4×n first flow diversion channels (5) arranged in parallel; And / or, two adjacent first diversion channels (5) are arranged in a staggered manner.

3. The split flow and uniform air flow system according to claim 1, characterized in that: The number of the direction-changing uniform air channels (2) is 24×n, and one end of the direction-changing uniform air channel (2) receives the airflow flowing out of the 4×n first flow diversion channels (5) of the air outlet grille (4); And / or, the direction-changing uniform air flow channel (2) has at least one direction-changing structure (6) in its extension direction, and the direction-changing structure (6) is at least used to change the flow direction of the airflow.

4. The split flow and uniform air flow system according to claim 1, characterized in that: The direction-changing structure (6) is a bent structure formed along the extension direction of the direction-changing uniform air channel (2), and the bent structure has rounded corners; And / or, the radius of the fillet is 20-100 mm; And / or, the 24×n direction-changing uniform wind channels (2) are bilaterally symmetrical in width, and the widths of two adjacent direction-changing uniform wind channels (2) are equal, and the 24×n secondary branches can be divided into 4n parts, each with 6n branches.

5. The split flow and uniform air flow system according to claim 1, characterized in that: The third flow splitting unit (20) comprises a flow splitting grid (7), the flow splitting grid (7) receiving 24×n airflows flowing out from the other end of the direction-changing uniform air passage (2), and the flow splitting grid (7) having 4×n flow splitting areas (8); And / or, the 4×n diversion areas (8) are mirror-symmetrical in the horizontal direction and the vertical direction; And / or, the diversion area (8) comprises a plurality of air inlets (9), and the number of the air inlets (9) included in each diversion area (8) is the same.

6. The split-flow and uniform air flow system according to claim 1, characterized in that: The fourth flow splitting unit (21) has 4n air inlets (10), and the air inlets (10) are at least used to receive the airflow flowing out of the third flow splitting unit (20) and evenly split the airflow into 8n airflows for outflow; and / or, the 8n air inlets (10) have the same caliber; and / or, the 8n air inlets (10) are divided into 4n groups, each group comprising 2n air inlets (10); And / or, the air inlets (10) in group 4n are mirror-symmetrical in both horizontal and vertical directions; And / or, the secondary flow diversion device (3) comprises 8n flow diversion ports (22), and the 8n air outlets respectively correspond to the 8n cooling positions.

7. The split-flow and uniform air flow system according to claim 1, characterized in that: The second flow splitting unit (19) further comprises a first flow splitting component (11), the first flow splitting component (11) being arranged at the upwind direction of the direction-changing uniform air flow channel (2) and being used at least to evenly divide the airflow into two parts; And / or, the first flow dividing member (11) comprises a baffle or a guide plate; And / or, the first flow splitting unit (18), the second flow splitting unit (19), the third flow splitting unit (20) and the fourth flow splitting unit (21) are two groups of mirror-symmetry.

8. An energy storage air cooling system, characterized in that: include: An energy storage module, the energy storage module comprising 8n battery boxes (12); An air cooling module, the air cooling module comprising the flow distribution and uniform air flow system as claimed in claim 17, and further comprising a refrigeration unit (13), wherein the refrigeration unit (13) is at least used to provide air flow to the main flow distribution device (1).

9. The energy storage air cooling system according to claim 8, characterized in that: The 8n cooling positions correspond one-to-one to the 8n battery boxes (12), respectively, and the cooling positions are located in the internal space of the battery box (12); And / or, the battery box (12) has a plurality of batteries (14) arranged in an array in space, and 8n cooling channels (15) arranged in parallel are formed between the batteries (14) and between the batteries (14) and the inner wall of the battery box (12), and the 8n cooling positions are respectively located in the 8n cooling channels (15).

10. An energy storage air-cooling container, comprising the energy storage air-cooling system according to claim 9, characterized in that: include: A box (16), the energy storage module and the air cooling module are arranged in a mirror-like manner inside the box (16), and a second flow splitting component (17) is provided between two adjacent refrigeration units (13) arranged in a mirror-like manner, and the second flow splitting component (17) is at least used to separate the airflow flowing out of the refrigeration unit (13) and transport it to the two adjacent flow splitting and air-uniforming systems arranged in a mirror-like manner; And / or, the second flow dividing member (17) comprises a baffle or a guide plate.

Images