CN114744333A - Energy storage container and cooling system and cooling air duct thereof - Google Patents

Abstract

The invention discloses a heat dissipation air duct, which is arranged between two rows of battery racks of an energy storage container, and comprises: an air supply duct housing; the air supply duct shell is provided with an air duct air inlet which is opposite to an air outlet of the air conditioner; the battery rack is characterized in that a plurality of air duct air outlets are formed in two sides of the air supply duct shell and distributed at intervals along the air flowing direction of the air supply duct shell, and the air duct air outlets are arranged opposite to the battery rack. According to the scheme, the air conditioner outlet air is uniformly collected into the air duct, disordered leakage of cold air is prevented, and the cold air entering the battery pack is ensured to be constant by forming the strip holes with different sizes on the air duct and enabling the vertical central lines of the strip holes to be superposed with the vertical central line of the battery rack air inlet; the temperature equalization of each battery pack is easy to realize, and the temperature equalization of the battery core is further realized. The invention also discloses a heat dissipation system and an energy storage container adopting the heat dissipation air duct.

Description

An energy storage container and its cooling system and cooling air duct

technical field

The invention relates to the technical field of battery energy storage, in particular to an energy storage container, a heat dissipation system and a heat dissipation air duct.

Background technique

At present, the heat dissipation form of the side full-door energy storage system container is as follows: an air duct is formed between two rows of battery racks, and the temperature is reduced by circulating the cold air of the air conditioner.

The main disadvantages of the existing non-walk-in air ducts are: the cold air from the air conditioner directly flows into the battery pack without any treatment. Since the wind in the air duct is disordered, the amount of cold air entering each battery pack varies greatly. , resulting in a large difference between the cells and poor temperature uniformity.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a cooling air duct to improve the temperature uniformity of the energy storage battery.

The present invention also provides a heat dissipation system and an energy storage container using the above heat dissipation air duct.

To achieve the above object, the present invention provides the following technical solutions:

A cooling air duct is arranged between two opposite rows of battery racks of an energy storage container, comprising: an air supply duct housing;

The air supply duct shell is provided with an air duct air inlet, and the air duct air inlet is used to be opposite to the air outlet of the air conditioner;

Both sides of the air supply duct housing are provided with a plurality of air duct air outlets, and the plurality of air duct air outlets are distributed at intervals along the wind flow direction of the air supply duct housing. It is used to be opposite to the battery rack.

Preferably, a plurality of the air duct air outlets are vertical elongated holes, and the center line of the air duct is coincident with the vertical center line of the battery rack air inlet of the battery rack, and the width of the air duct air outlet is smaller than the width of the The width of the battery rack air inlet of the battery rack;

And/or, several of the air duct air outlets are vertical elongated holes, and the center line coincides with the vertical center line between the battery rack air inlets of two adjacent battery racks in the same row, and the The width of the air outlet of the air duct is larger than the width of a single air inlet of the battery rack, and smaller than the sum of the widths of the two air inlets of the battery rack.

Preferably, the height of the air outlet of the air duct matches the height of the air inlet of the battery rack.

Preferably, along the air flow direction of the air supply duct housing, the plurality of air duct air outlets at least include: a first air outlet, a second air outlet and a third air outlet;

The area of the first air outlet is larger than the area of the second air outlet, and the area of the second air outlet is smaller than the area of the third air outlet.

Preferably, along the wind flow direction of the air supply duct housing, the areas of the plurality of air duct air outlets gradually decrease.

Preferably, the areas of a plurality of the air duct outlets are equal;

The cooling air duct further includes: a baffle plate disposed in the air supply duct housing, the baffle plate being perpendicular to the wind flow direction;

The baffle is provided with through holes, and the porosity of the upper part is greater than that of the lower part.

Preferably, the baffle includes: an upper baffle, a middle baffle and a lower baffle connected in sequence;

The porosity of the upper baffle is 70%, and the porosity of the middle baffle and the lower baffle is 50%.

Preferably, it also includes: an adapter;

The adapter frame includes a first side and a second side that are vertically connected;

The two adapter racks are respectively installed in the opposite positions of the two opposite rows of battery racks, wherein the first side of one adapter rack is fixed parallel to the side surface of the battery racks in one row, and the other adapter rack is fixed to the side of the battery rack in parallel. The first side of the rack is fixed in parallel with the side surface of the other row of the battery racks;

A plurality of the baffles are arranged vertically, and two sides are respectively fixed to the second sides of the two adapter frames in parallel.

Preferably, the air inlet of the air duct is opened at one end of the air duct housing, and the other end of the air duct housing is closed.

Preferably, the air duct housing comprises: a top wall, a side wall and a bottom wall;

The top wall is connected between the tops of the two side walls, and the bottom wall is connected between the bottoms of the two side walls;

The air outlet of the air duct is opened on the side wall.

Preferably, the air supply duct housing includes: a top sealing plate and a side sealing plate;

The top sealing plate is installed between the tops of two adjacent battery racks in the same row, the side sealing plates are installed on opposite sides of the battery racks in the two rows, and the air outlet of the air duct is opened on the side sealing plate. plate.

Preferably, a plurality of the top sealing plates are connected and arranged along the wind flow direction.

Preferably, the side sealing plate includes: a battery rack rear sealing plate and a gap side sealing plate arranged coplanarly;

The battery rack rear sealing plates are installed on opposite sides of the two rows of the battery racks, and the gap side sealing plates are installed between two adjacent battery racks in the same row;

The air outlet of the air duct is opened on the rear sealing plate of the battery rack.

Preferably, the width of the rear sealing plate of the battery rack matches the width of a single battery rack, and the air duct outlet is two vertical long holes opened on the rear sealing plate of the battery rack, and the center lines are respectively It is coincident with the vertical centerlines of the battery rack air inlets on both sides of the battery rack.

A heat dissipation system includes: the above-mentioned heat dissipation air duct, and further includes: a return air mechanism;

The air return mechanism includes: a turbulence fan arranged between the battery rack and the box body of the energy storage container, and the air outlet side of the turbulence fan faces the air return port of the air conditioner.

An energy storage container includes: a battery rack and an air conditioner, and further includes: the above-mentioned cooling air duct.

It can be seen from the above technical solutions that the cooling air duct provided by the present invention uniformly collects the air discharged from the air conditioner into the air duct, preventing the disorderly leakage of cold air. The vertical center line of the strip hole coincides with the vertical center line of the air inlet of the battery rack, so as to ensure that the amount of cold air entering the battery pack is constant; this solution is easier to achieve the uniform temperature of each battery pack, thereby achieving the uniformity of the cells. temperature. The present invention also provides a heat dissipation system and an energy storage container. Since the above-mentioned heat dissipation air duct is adopted, it also has all the above beneficial effects. For details, please refer to the previous description, which will not be repeated here.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic top-view structural diagram of an energy storage container provided by an embodiment of the present invention;

2 is a schematic structural diagram of a heat dissipation system in a first embodiment provided by the present invention;

3 is a schematic three-dimensional structure diagram of a heat dissipation air duct in the first embodiment provided by the present invention;

4 is a schematic plan view of a heat dissipation air duct in the first embodiment provided by the present invention;

5 is a schematic three-dimensional structural diagram of a battery rack provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of a rear view structure of a battery rack provided by an embodiment of the present invention;

Fig. 7 is a partial enlarged view of the air inlet of the battery rack in Fig. 6;

8 is a schematic structural diagram of a battery pack provided by an embodiment of the present invention;

9 is a schematic structural diagram of a heat dissipation system in a second embodiment provided by the present invention;

10 is a schematic structural diagram of a top sealing plate in the second embodiment provided by the present invention;

11 is a schematic structural diagram of the rear sealing plate of the battery rack in the second embodiment provided by the present invention;

12 is a schematic top-view structural diagram of a heat dissipation system in a third embodiment provided by the present invention;

FIG. 13 is a schematic top view of the structure of the baffle plate in the third embodiment provided by the present invention.

Among them, 10 is the air supply duct housing, 11 is the air duct air inlet, 12 is the air duct air outlet, 121 is the first air outlet, 121 is the second air outlet, 123 is the third air outlet, and 124 is an independent air outlet , 125 is the common air outlet, 13 is the top wall, 14 is the side wall, 15 is the bottom wall, 161 is the rear sealing plate of the battery rack, 162 is the gap side sealing plate, 17 is the baffle plate, and 18 is the adapter frame;

20 is the battery rack, 21 is the battery rack air inlet, 22 is the battery pack, 23 is the battery air inlet, and 24 is the battery fan;

30 is the air conditioner and 40 is the spoiler fan.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The cooling air duct provided in the embodiment of the present invention is arranged between two adjacent rows of battery racks 20 of an energy storage container, and includes: an air supply duct housing 10; the air supply duct housing 10 encloses an air supply duct, and its structure Refer to Figure 1-Figure 3;

Wherein, the air supply duct housing 10 is provided with an air duct air inlet 11, and the air duct air inlet 11 is arranged opposite to the air outlet of the air conditioner 30;

Both sides of the air supply duct housing 10 are provided with a plurality of air duct air outlets 12, and the plurality of air duct air outlets 12 are distributed at intervals along the air flow direction of the air supply duct housing 10. The air duct air outlets 12 are used for the same purpose. The battery racks 20 are arranged opposite to each other.

Working principle: the cold air of the air conditioner 30 enters the air supply duct housing 10 from the air supply duct housing 10. As time goes by, the cold air will fill the air duct to reach a steady state; the cold air flows from the multiple air duct outlets 12 to the battery rack respectively 20 air inlet, and then enter the battery pack from the side of the battery pack; a constant amount of cold air flows through the battery pack and then returns to the air conditioner 30 return air outlet, realizing the heat exchange between the battery cells and the air conditioner refrigerant.

It can be seen from the above technical solutions that the cooling air duct provided by the embodiment of the present invention collects the air discharged from the air conditioner into the air supply duct uniformly, preventing the disorderly leakage of cold air; It redistributes the collected air-conditioning cold air, thereby ensuring that the amount of cold air entering the battery pack is constant; it is easier to achieve the average temperature of each battery pack, thereby achieving the uniform temperature of the cells. The air duct of this solution has the air guiding effect, so the existing air supply spoiler fan can be simplified.

There is a gap between the battery pack and the battery rack, which will cause a part of the cold air to flow out directly from the gap between the battery pack and the battery rack without passing through the battery pack, resulting in the leakage of the cold air. For this purpose, the plurality of air duct air outlets 12 are vertical elongated holes, and the center lines of which are coincident with the vertical center lines of the battery rack air inlets 21 of the battery rack 20 . That is, the air outlet 12 of the air duct and the air inlet 21 of the battery rack are aligned and matched in shape, so that the cold air of the air conditioner 30 directly enters the battery rack 20 to ensure that the amount of cold air entering the battery pack is constant, the heat dissipation effect is good, and the cold air high utilization rate. The width of the air outlet 12 of the air duct is smaller than the width of the air inlet 21 of the battery rack 20, then the air outlet volume of the air duct is the air inlet volume of the battery, which is convenient to effectively control the air volume of each battery rack through the design of the air supply duct housing 10 to ensure The amount of cold air entering the battery pack is constant, and it is easier to achieve the uniform temperature of each battery pack, thereby achieving the uniform temperature of the cells.

As shown in FIG. 5 , the existing battery racks 20 are generally square, and air inlets are provided at the edges. When closely arranged, the air inlets of two adjacent battery racks 20 on the same side are attached to each other. For this, the The same larger air duct outlet 12 can be used to simplify the structure. In this solution, several air duct air outlets 12 are vertical elongated holes, and the center line coincides with the vertical center line between the battery rack air inlets 21 of two adjacent battery racks 20 in the same row. The width of the air outlet 12 is larger than the width of the air inlet 21 of a single battery rack, and smaller than the sum of the widths of the air inlets 21 of the two battery racks. As shown in FIG. 1 , the battery racks 20 are divided into two rows, with three groups in each row and six in each group; then these six battery racks 20 are closely arranged in one group, resulting in five air inlets to fit together, as shown in the figure 4 corresponds to five common air outlets 125 (width corresponds to two battery rack air inlets 21 ), and the edges of each group of battery racks 20 correspond to independent air outlets 124 (width corresponds to a single battery rack air inlet 21 ).

Further, the height of the air outlet 12 of the air duct matches the height of the air inlet 21 of the battery rack, so as to meet the heat dissipation requirements of the battery packs of each layer.

In view of the fact that there will be eddy currents near the air outlet of the air conditioner 30, and the wind will rotate beside it, the actual wind entering the battery pack is very small, so the only way to increase the area of the air inlet on the back panel is to increase the amount of wind entering the battery pack. of air intake.

The setting of the air duct outlet 12 is mainly related to the wind speed of the air conditioner and the length of the container, so there are four situations: 1. High wind speed and long length;

2. High wind speed and short length;

3. Low wind speed and long length;

4. Low wind speed and short length.

For this, three solutions need to be designed:

1. Area change of air duct outlet 12: large, small, large (applicable to scenarios with low wind speed and/or long container length);

2. Area change of air duct outlet 12: from large to small (applicable to scenarios with high wind speed and/or short container length);

3. The area of the air outlet 12 of the air duct is equal, and a baffle is added to the air inlet with a small air volume (see the third embodiment of this solution).

According to the above-mentioned first solution, the amount of cold air entering each battery pack can be well controlled through the difference in the size of the air duct openings. The general trend of the openings is that the air duct near the air conditioner has the largest opening, and The openings of the adjacent air ducts are gradually reduced, then the middle openings are constant, and then the distal ends are gradually increased to ensure the cooling capacity at both ends.

Specifically, along the air flow direction of the air supply duct housing 10, the plurality of air duct air outlets 12 at least include: a first air outlet 121, a second air outlet 122 and a third air outlet 123; As shown in Figure 4;

The area of the first air outlet 121 is larger than that of the second air outlet 122 , and the area of the second air outlet 122 is smaller than that of the third air outlet 123 .

According to the above-mentioned second solution, along the air flow direction of the air duct housing 10 , the areas of the plurality of air duct air outlets 12 are gradually reduced.

According to the above-mentioned third solution, the areas of the air outlets 12 of the plurality of air ducts are equal;

The cooling air duct also includes: a baffle 17 arranged in the air supply duct housing 10, the baffle 17 is perpendicular to the direction of wind flow, and its structure can be shown in Figure 12; The baffle of the opening rate, after the cold air from the air outlet of the air conditioner encounters the baffle with the opening, due to the resistance, the cold air accumulates between the air conditioner and the opening baffle, and then the local pressure increases, making the battery close to the air conditioner side. The package obtains more cold air volume, thereby weakening the Bernoulli phenomenon;

The baffle 17 is provided with through holes, and the porosity of the upper part is greater than that of the lower part; due to the effect of resistance, a part of the cold air volume at the bottom of the air conditioner and the baffle will be squeezed to the top, ensuring the consistency of the wind speed up and down the air outlet of the air conditioner Therefore, the amount of cold air sucked in by the battery pack on the top is increased, and the temperature uniformity above and below the battery cluster is better.

The above solution can theoretically solve the temperature uniformity of the battery pack, but there are two problems in the actual process: 1. The cold air flowing out from the air outlet of the air conditioner is not equal to the upper and lower speeds, so it is necessary to adjust the size of the upper and lower openings on the sealing plate Inconsistent, which will bring some troubles to production and processing; 2. Since the wind speed of the air outlet of the air conditioner is relatively large and there is an eddy current phenomenon, it is necessary to open a relatively large air inlet on the battery rack column close to the air conditioner, but when the air inlet on the column When the area reaches a certain value, the strength of the battery holder will not be guaranteed.

In view of this, preferably, the baffle plate 19 includes: an upper baffle plate 171, a middle baffle plate 172 and a lower baffle plate 173 connected in sequence, that is, the upper and lower split structure is adopted, and the size of the opening can be changed after assembly;

Specifically, the porosity of the upper baffle 171 is 70%, and the porosity of the middle baffle 172 and the lower baffle 173 is 50%.

The cooling air duct provided in the embodiment of the present invention further includes: an adapter frame 18, the structure of which can be shown in FIG. 13;

The adapter frame 18 includes a vertically connected first side and a second side;

The two adapter racks 18 are respectively installed at opposite positions relative to the two rows of battery racks 20 , wherein the first side of one adapter rack 18 is fixed parallel to the side of one row of battery racks 20 , and the first side of the other adapter rack 18 be fixed parallel to the side surface of another row of battery racks 20;

The plurality of baffles 19 are arranged vertically, and two sides of the baffles 19 are respectively fixed to the second sides of the two adapter frames 18 in parallel. The installation of the adapter frame 18 helps to eliminate dimensional errors and realize the accurate assembly of the baffle 19 ; at the same time, it also avoids the stress concentration when the edges on both sides of the baffle 19 are connected.

Preferably, the air duct air inlet 11 is opened at one end of the air duct housing 10 , and the other end of the air duct housing 10 is closed. In this way, all the cold air of the air supply duct housing 10 flows out to the battery rack 20 through the air duct air outlets 12 on both sides, the heat dissipation effect is good, and the utilization rate of the cold air is high; temperature uniformity. Further, the closed end of the air duct housing 10 is a detachable structure for easy maintenance.

In the first embodiment provided by this solution, the air supply duct housing 10 includes: a top wall 13, a side wall 14 and a bottom wall 15; its structure can be referred to as shown in FIG. 3;

Wherein, the top wall 13 is connected between the tops of the two side walls 14, and the bottom wall 15 is connected between the bottoms of the two side walls 14, forming an independent integral air duct structure with good air guiding effect;

The air duct outlet 12 is opened on the side wall 14 . The lengths of the top wall 13, the side walls 14 and the bottom wall 15 are equal to the lengths of the two rows of battery racks 20. Specifically, a segmented structure can be adopted to facilitate production, transportation and assembly.

In the second embodiment provided by this solution, the air supply duct housing 10 includes: a top sealing plate 131 and a side sealing plate;

The top sealing plate 131 is installed between the tops of two adjacent battery racks 20 in the same row, and side sealing plates are installed on opposite sides of the two rows of battery racks 20 (usually set back to back), and the air outlet 12 is opened on the side sealing plate. The top sealing plate 131, the side sealing plates on both sides and the floor of the energy storage container form an air supply duct, and an air duct air inlet 11 is formed at one end, which is a simplified split assembly structure. The bottom wall 15 can be omitted compared to the aforementioned first embodiment. That is, without the need for an overall air duct, a sealing plate is directly added behind the battery rack 20, as shown in Figure 9, and a sealing plate is added on the top of the two rows of battery racks at the same time. The cold air volume of the battery pack ensures the uniform temperature of the cells.

Further, the side sealing plate includes: a battery rack rear sealing plate 161 and a gap side sealing plate 162 arranged coplanarly;

The battery rack rear sealing plates 161 are installed on the opposite sides of the two rows of battery racks 20, and the gap side sealing plates 162 are installed between two adjacent battery racks 20 in the same row. The assembled structure replaces the side wall 14 in the first embodiment; its structure can be shown in FIG. 9 and FIG. 11 ;

The air outlet 12 of the air duct is opened on the rear sealing plate 161 of the battery holder.

Preferably, the width of the rear sealing plate 161 of the battery rack matches the width of a single battery rack 20 , the air duct outlet 12 is two vertical elongated holes opened on the rear sealing plate 161 of the battery rack, and the center lines are respectively connected to the battery The vertical centerlines of the battery rack air inlets 21 on both sides of the rack 20 are coincident.

The embodiment of the present invention also provides a heat dissipation system, comprising: the above-mentioned heat dissipation air duct, and further comprising: a return air mechanism;

The air return mechanism includes: a turbulence fan 40 disposed between the battery rack 20 and the box body of the energy storage container, and the air outlet side of the turbulence fan 40 faces the air return port of the air conditioner 30 . As shown in Figure 1, four spoiler fans are added outside the battery to ensure that the hot air flowing out of the battery pack smoothly flows into the air inlet of the air conditioner.

The embodiment of the present invention also provides an energy storage container, which includes: a battery rack 20 and an air conditioner 30, and further includes: the above-mentioned cooling air duct. Since this solution adopts the above-mentioned cooling air duct, it also has all the above-mentioned beneficial effects correspondingly.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (16)

1. A cooling air duct, arranged between two opposite rows of battery racks (20) of an energy storage container, characterized in that it comprises: an air supply duct housing (10); The air supply duct housing (10) is provided with an air duct air inlet (11), and the air duct air inlet (11) is arranged opposite to the air outlet of the air conditioner (30); Both sides of the air supply duct housing (10) are provided with a plurality of air duct air outlets (12), and the plurality of air duct air outlets (12) are arranged along the length of the air supply duct housing (10). The air flow directions are distributed at intervals, and the air outlet (12) of the air duct is configured to be opposite to the battery rack (20). 2 . The cooling air duct according to claim 1 , wherein a plurality of the air duct air outlets ( 12 ) are vertical elongated holes, and the center line of the air duct is connected to the battery holder of the battery holder ( 20 ). 3 . The vertical centerlines of the air inlet (21) are coincident, and the width of the air outlet (12) of the air duct is smaller than the width of the battery holder air inlet (21) of the battery holder (20); And/or, several of the air duct air outlets (12) are vertical elongated holes, and the center line is between the battery rack air inlets (21) of two adjacent battery racks (20) in the same row The vertical centerlines of the ducts coincide, and the width of the air duct air outlet (12) is greater than the width of a single battery rack air inlet (21), and less than the sum of the widths of the two battery rack air inlets (21). 3. The cooling air duct according to claim 1, wherein the height of the air outlet (12) of the air duct matches the height of the air inlet (21) of the battery rack. 4. The cooling air duct according to claim 1, characterized in that, along the wind flow direction of the air supply duct housing (10), the plurality of air duct air outlets (12) at least comprise: a first outlet an air outlet (121), a second air outlet (122) and a third air outlet (123); The area of the first air outlet (121) is larger than that of the second air outlet (122), and the area of the second air outlet (122) is smaller than the area of the third air outlet (123). 5. The cooling air duct according to claim 1, characterized in that, along the air flow direction of the air supply duct housing (10), the areas of the plurality of air duct air outlets (12) gradually decrease. 6. The cooling air duct according to claim 1, characterized in that, the areas of a plurality of the air duct air outlets (12) are equal; The cooling air duct further comprises: a baffle plate (17) arranged in the air supply duct housing (10), the baffle plate (17) being perpendicular to the wind flow direction; The baffle plate (17) is provided with through holes, and the porosity of the upper part is larger than that of the lower part. 7. The cooling air duct according to claim 6, wherein the baffle plate (19) comprises: an upper baffle plate (171), a middle baffle plate (172) and a lower baffle plate (173) connected in sequence; The porosity of the upper baffle (171) is 70%, and the porosity of the middle baffle (172) and the lower baffle (173) is 50%. 8. The cooling air duct according to claim 6, characterized in that, further comprising: an adapter frame (18); The adapter frame (18) includes a first side and a second side that are vertically connected; The two adapter racks (18) are respectively installed at the opposite positions of the two opposite rows of battery racks (20), wherein the first side of one of the adapter racks (18) is fixed in parallel with one row of the battery racks (20) side surface, the first side of the other adapter frame (18) is fixed parallel to the side surface of the other row of the battery racks (20); The plurality of baffles (19) are arranged vertically, and two sides are respectively fixed to the second sides of the two adapter frames (18) in parallel. 9. The cooling air duct according to claim 1, characterized in that, the air duct air inlet (11) is opened at one end of the air supply duct housing (10), and the air supply duct housing (10) ) is closed at the other end. 10. The cooling air duct according to any one of claims 1-9, wherein the air supply duct housing (10) comprises: a top wall (13), a side wall (14) and a bottom wall (15) ); The top wall (13) is connected between the tops of the two side walls (14), and the bottom wall (15) is connected between the bottoms of the two side walls (14); The air duct air outlet (12) is opened on the side wall (14). 11. The cooling air duct according to any one of claims 1-9, wherein the air supply duct housing (10) comprises: a top sealing plate (131) and a side sealing plate; The top sealing plate (131) is installed between the tops of two adjacent battery racks (20) in the same row, and the side sealing plates are installed on opposite sides of the battery racks (20) in the two rows. The air outlet (12) is opened on the side sealing plate. 12. The cooling air duct according to claim 11, characterized in that a plurality of the top sealing plates (131) are connected and arranged along the wind flow direction. 13 . The cooling air duct according to claim 11 , wherein the side sealing plate comprises: a battery rack rear sealing plate ( 161 ) and a gap side sealing plate ( 162 ) arranged coplanarly; 13 . The battery rack rear sealing plates (161) are installed on opposite sides of the two rows of the battery racks (20), and the gap side sealing plates (162) are installed between the two adjacent battery racks (20) in the same row. ); The air outlet (12) of the air duct is opened on the rear sealing plate (161) of the battery rack. 14. The cooling air duct according to claim 13, characterized in that the width of the battery rack rear sealing plate (161) matches the width of a single battery rack (20), and the air duct outlet (12) ) are two vertical elongated holes opened on the rear sealing plate (161) of the battery rack, and the center lines respectively coincide with the vertical center lines of the battery rack air inlets (21) on both sides of the battery rack (20). . 15. A heat dissipation system, comprising: the heat dissipation air duct according to any one of claims 1-14, and further comprising: a return air mechanism; The air return mechanism includes: a turbulence fan (40) arranged between the battery rack (20) and the box body of the energy storage container, and the air outlet side of the turbulence fan (40) faces the The air return port of the air conditioner (30). 16. An energy storage container, comprising: a battery rack (20) and an air conditioner (30), characterized in that, further comprising: the cooling air duct according to any one of claims 1-14.

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