Cooling unit and energy storage container

Abstract

The invention provides a cooling unit and an energy storage container, and the cooling unit comprises a shell which comprises a first cavity and a second cavity; the volute fan is arranged in the first cavity and comprises a volute and an impeller; a rotating shaft of the impeller is vertical to the bottom wall of the first cavity; and the heat exchanger is obliquely arranged in the second cavity and divides the second cavity into an air inlet space and an air outlet space, so that airflow flowing into the air inlet space obliquely penetrates through the heat exchanger and then flows into the air outlet space. In this way, the contact area of airflow and the heat exchanger is increased, and the heat exchange efficiency is improved; the flowing path of airflow is prolonged, smooth flowing of the airflow is guaranteed, and noise and vibration are reduced; a volute fan is used, so that the design of an air duct is optimized; the rotating shaft of the impeller is perpendicular to the bottom wall of the first cavity, so that a rotating motor for driving the impeller to rotate is conveniently installed on the bottom wall of the first cavity, the volute fan is more compact in structure, it is possible that a plurality of volute fans are arranged side by side in a gapless mode, and the structural compactness of the cooling unit is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of cooling equipment, and in particular to a cooling unit, and also to an energy storage container including the cooling unit. Background Art

[0002] The cooling unit promotes airflow through the fan assembly to achieve fast and efficient heat exchange between the external airflow and the refrigerant in the heat exchanger. In the process of realizing this application, the inventor found that there are at least the following technical problems in the prior art: However, the air duct design of the existing fan assembly is unreasonable, resulting in poor airflow, large noise and vibration, and affecting the stability of the system. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a cooling unit, which at least solves the problem of the fan assembly generating large noise and vibration.

[0004] Another object of the present application is to provide an energy storage container including the above-mentioned cooling unit.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A cooling unit, comprising:

[0007] The housing comprises a first cavity and a second cavity distributed along a first direction, wherein a surrounding wall of the first cavity forms an air inlet surface;

[0008] A volute fan is arranged in the first cavity, comprising a volute and an impeller; the rotating shaft of the impeller is perpendicular to the bottom wall of the first cavity; the top wall of the volute is formed with an air inlet, and the circumferential wall of the volute is formed with an air outlet;

[0009] a heat exchanger, which is obliquely arranged in the second cavity and divides the second cavity into an air inlet space and an air outlet space, so that the airflow flowing into the air inlet space obliquely passes through the heat exchanger and then flows into the air outlet space; the air inlet space is connected to the air outlet, and the surrounding wall of the air outlet space forms an air outlet surface;

[0010] Wherein, the first direction is perpendicular to the rotation axis.

[0011] Optionally, in the above cooling unit, the circumferential wall of the volute includes a spiral portion and an air outlet portion connected to an opening of the spiral portion; the opening of the air outlet portion away from the spiral portion is the air outlet;

[0012] The helical line formula of the helical portion is: r=r0+(Δr / ΔΦ)Φ.

[0013] Optionally, in the above cooling unit,

[0014] The arc angle of the spiral portion is θ, 5π / 6≤θ≤7π / 6;

[0015] 8cm≤r0≤15cm;

[0016] 3 / π≤ΔΦ / Δr≤9 / π.

[0017] Optionally, in the above cooling unit, along the first direction, the heat exchanger includes a first end and a second end;

[0018] The first end is located at the top of the air outlet; the second end is inclined relative to the first end toward the bottom wall of the second cavity so that the height of the first end is greater than the height of the second end, and the second end extends to the side wall of the second cavity away from the first cavity.

[0019] Optionally, in the above cooling unit, both ends of the heat exchanger along the second direction are provided with first baffles fixed to the second cavity, and the heat exchanger support is fixed to the first baffle; the second direction is respectively perpendicular to the first direction and the rotation axis;

[0020] The two first baffles, the bottom wall of the second cavity, and the bottom wall of the heat exchanger form the air inlet space.

[0021] Optionally, in the above cooling unit, a plurality of support rods parallel to the second direction are connected between the two first baffles.

[0022] Optionally, in the above cooling unit, second baffles are provided at both ends of the heat exchanger along the second direction, and the second baffles abut against the heat exchanger and are fixed to the second cavity;

[0023] The two second baffles, the side wall of the second cavity away from the first cavity, the top wall of the second cavity, and the top wall of the heat exchanger form the air outlet space.

[0024] Optionally, in the above cooling unit, the cooling unit includes a limiting member; the second baffle includes a limiting portion, and the limiting portion can be limited by the limiting member.

[0025] Optionally, in the above cooling unit,

[0026] Along the second direction, the volute fans are provided in plurality, and the air outlets of the volute fans are spliced ​​without gaps;

[0027] and / or,

[0028] The housing comprises a shell having a top opening and a cover plate sealed on the top opening;

[0029] and / or,

[0030] A lifting lug is arranged on the top of the cooling unit.

[0031] An energy storage container comprises a cooling unit for exchanging heat for energy storage batteries in an energy storage system; the cooling unit is the cooling unit described above.

[0032] It can be seen from the above technical scheme that the cooling unit provided by the present application includes a shell, a volute fan, and a heat exchanger; the shell includes a first cavity and a second cavity distributed along a first direction, and the surrounding wall of the first cavity forms an air inlet surface; the volute fan is arranged in the first cavity, including a volute and an impeller; the rotating axis of the impeller is perpendicular to the bottom wall of the first cavity; the top wall of the volute forms an air inlet, and the circumferential wall of the volute forms an air outlet; the heat exchanger is obliquely arranged in the second cavity and divides the second cavity into an air inlet space and an air outlet space, so that the airflow flowing into the air inlet space obliquely passes through the heat exchanger and then flows into the air outlet space; the air inlet space is connected to the air outlet, and the two are sealed and connected, and the surrounding wall of the air outlet space forms an air outlet surface; wherein the first direction is perpendicular to the rotating axis.

[0033] First, the shell of the present application is divided into a first cavity and a second cavity, and the volute fan and the heat exchanger are arranged in the first cavity and the second cavity respectively. As mentioned above, after the airflow is pressurized and accelerated by the volute fan in the first cavity, it flows through the second cavity to exchange heat with the refrigerant in the heat exchanger. The airflow circulates between the first cavity and the second cavity, which to a certain extent extends the flow path of the airflow in the shell, helps to stabilize the flow of the airflow, and reduces noise and vibration.

[0034] Secondly, the heat exchanger of the present application is tilted in the second cavity, dividing the second cavity into an air inlet space and an air outlet space, and the airflow flowing into the air inlet space can only flow into the air outlet space after passing through the heat exchanger. As mentioned above, on the one hand, it ensures that the airflow passes through the heat exchanger at an angle (non-vertical), effectively increasing the contact area between the airflow and the heat exchanger, which is beneficial to improving the heat exchange efficiency; on the other hand, it constrains the flow path of the airflow, so that the airflow can only pass through the side surface of the heat exchanger close to the air inlet space and the side surface of the heat exchanger close to the air outlet space, which not only ensures the amount of airflow passing through the heat exchanger, so that the airflow and the heat exchanger are fully in contact, there is no dead angle for heat exchange, and the heat exchange efficiency is further improved, but also the flow path of the airflow in the second cavity is extended, which is conducive to the stabilization effect of the airflow and further reduces noise and vibration.

[0035] Secondly, the present application uses a volute fan, the outlet diameter of which gradually expands to effectively guide the airflow along a predetermined path after being discharged from the impeller, reduce turbulence and resistance, and thereby reduce noise and vibration, thereby improving the efficiency and performance of the cooling unit.

[0036] Finally, it should be emphasized that the rotating axis of the impeller of the volute fan is perpendicular to the bottom wall of the first cavity; as above, it is convenient to install a rotating motor that drives the impeller to rotate on the bottom wall of the first cavity, so that the structure of the volute fan is more compact, and it is possible to arrange multiple volute fans 2 in parallel without gaps, thereby ensuring the compactness of the structure of the cooling unit.

[0037] The present application also provides an energy storage container, which includes any one of the above-mentioned cooling units. Since the above-mentioned cooling unit has the above-mentioned effects, the energy storage container having the above-mentioned cooling unit has the same effects, so it will not be repeated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0039] Figure 1 A three-dimensional diagram of a cooling unit provided in an embodiment of the present application;

[0040] Figure 2 for Figure 1 A cross-sectional view of

[0041] Figure 3 A schematic diagram of the structure of a cooling unit provided in an embodiment of the present application without a cover plate;

[0042] Figure 4 for Figure 3 A top view of

[0043] Figure 5 A schematic diagram of the structure of the volute provided in an embodiment of the present application;

[0044] Figure 6 A dimensioned diagram of a certain embodiment of a volute provided in an embodiment of the present application;

[0045] Figure 7 An exploded diagram of a cooling unit provided in an embodiment of the present application.

[0046] exist Figure 1-7 middle:

[0047] 1. Shell; 2. Volute fan; 3. Heat exchanger; 4. First baffle; 5. Second baffle; 6. Limiting piece; 7. Support rod; 8. Reinforcement rod; 9. Lifting lug;

[0048] 11. First cavity; 12. Second cavity; 13. Housing; 14. Cover plate;

[0049] 21. volute; 22. impeller;

[0050] 31. first end; 32. second end; 33. first flange; 34. fourth flange;

[0051] 41. first laminating portion; 42. second laminating portion; 43. third laminating portion;

[0052] 51. fourth laminating portion; 52. limiting portion; 53. fifth laminating portion; 54. sixth laminating portion;

[0053] 111. Wind inlet side;

[0054] 121. air inlet space; 122. air outlet space; 123. air outlet surface;

[0055] 211, air inlet; 212, air outlet; 213, spiral portion; 214, air outlet portion; 215, third flange. DETAILED DESCRIPTION

[0056] The present application provides a cooling unit and an energy storage container, which solve the problem of high noise and vibration generated by the fan assembly.

[0057] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0058] like Figure 1-Figure 7 As shown, the embodiment of the present application provides a cooling unit, which includes a housing 1, a volute fan 2, and a heat exchanger 3. Figure 2-3 The housing 1 includes a first cavity 11 and a second cavity 12 distributed along a first direction, and the surrounding wall of the first cavity 11 forms an air inlet surface 111. The volute fan 2 is disposed in the first cavity 11, and the volute fan 2 includes a volute 21 and an impeller 22. The rotation axis of the impeller 22 is perpendicular to the bottom wall of the first cavity 11. Please refer to the attached Figure 5 The top wall of the volute 21 is formed with an air inlet 211, and the circumferential wall of the volute 21 is formed with an air outlet 212. Figure 2 The heat exchanger 3 is tiltedly arranged in the second chamber 12 and divides the second chamber 12 into an air inlet space 121 and an air outlet space 122, so that the airflow flowing into the air inlet space 121 passes through the heat exchanger 3 and then flows into the air outlet space 122. The air inlet space 121 is connected to the air outlet 212, and the air inlet space 121 and the air outlet 212 are sealed; the surrounding wall of the air outlet space 122 is formed with an air outlet surface 123. The first direction is perpendicular to the rotation axis.

[0059] It should be noted that the cooling unit can be used as an external heat exchange structure of the thermal management system arranged outdoors. The thermal management system with the above cooling unit can be used to exchange heat with the energy storage battery in the energy storage system; wherein the refrigerant flows into the internal heat exchange structure located indoors and exchanges heat with the energy storage battery, and the refrigerant flows into the cooling unit located outdoors and exchanges heat with the airflow in the outside atmosphere.

[0060] The first direction is attached Figure 3 The direction indicated by the arrow in the figure. The position of the rotation axis is the Figure 3 The position shown by the dotted line. The air inlet surface 111 includes an air inlet grille; the air outlet surface 123 includes an air outlet grille.

[0061] Furthermore, the air inlet space 121 and the air outlet space 122 are connected only through the heat exchanger 3, and there is no connection relationship between the air inlet space 121 and the air outlet space 122 except the heat exchanger 3, so as to ensure the air flow passing through the heat exchanger 3. The heat exchanger 3 is a tube-fin heat exchanger, which acts as a condenser when cooling the energy storage battery of the photovoltaic system; and acts as an evaporator when heating the energy storage battery of the photovoltaic system.

[0062] “The airflow obliquely passes through the heat exchanger 3 ” means that the airflow is not perpendicular to the heat exchanger 3 , but has an angle of non-90° with the heat exchanger 3 ; in this way, the contact area between the airflow and the heat exchanger 3 is effectively increased.

[0063] Please see attached Figure 2 The air flow path of the cooling unit is: air inlet surface 111 → air inlet 211 of volute fan 2 → air outlet 212 of volute fan 2 → air inlet space 121 → heat exchanger 3 → air outlet space 122 → air outlet surface 123 .

[0064] First, the housing 1 of the present application is divided into a first chamber 11 and a second chamber 12, so that the volute fan 2 and the heat exchanger 3 are arranged in the first chamber 11 and the second chamber 12. As described above, after the airflow is pressurized and accelerated by the volute fan 2 in the first chamber 11, it flows through the second chamber 12 to exchange heat with the refrigerant in the heat exchanger 3. The airflow circulates between the first chamber 11 and the second chamber 12, which to a certain extent prolongs the flow path of the airflow in the housing 1, contributes to the stabilization effect of the airflow, and reduces noise and vibration.

[0065] Secondly, the heat exchanger 3 of the present application is arranged obliquely in the second cavity 12, dividing the second cavity 12 into an air inlet space 121 and an air outlet space 122, and the airflow flowing into the air inlet space 121 can only flow into the air outlet space 122 after passing through the heat exchanger 3. As mentioned above, on the one hand, it ensures that the airflow passes through the heat exchanger 3 obliquely (non-vertically), effectively increasing the contact area between the airflow and the heat exchanger 3, which is beneficial to improving the heat exchange efficiency; on the other hand, it constrains the flow path of the airflow, so that the airflow can only pass through the side surface of the heat exchanger 3 close to the air inlet space 121 and the side surface of the heat exchanger 3 close to the air outlet space 122, which not only ensures the airflow passing through the heat exchanger 3, but also makes the airflow fully contact with the heat exchanger 3, and there is no heat exchange dead angle, which further improves the heat exchange efficiency, and extends the flow path of the airflow in the second cavity 12, which is conducive to the stabilization effect of the airflow and further reduces noise and vibration.

[0066] Secondly, the present application uses a volute fan 2, and the outlet diameter of the volute 21 gradually increases to effectively guide the airflow to flow along a predetermined path after being discharged from the impeller 22, reduce turbulence and resistance, and thereby reduce noise and vibration, thereby improving the efficiency and performance of the cooling unit.

[0067] Finally, it should be emphasized that the rotating axis of the impeller 22 of the volute fan 2 is perpendicular to the bottom wall of the first chamber 11; as above, the rotating motor that drives the impeller 22 to rotate is installed on the bottom wall of the first chamber 11, so that the structure of the volute fan 2 is more compact, and multiple volute fans 2 are arranged in parallel without gaps as possible, thereby ensuring the compactness of the structure of the cooling unit.

[0068] Please see attached Figure 5-6 In some embodiments of the present application, the circumferential wall of the volute 21 includes a spiral portion 213 and an air outlet portion 214 connected to an opening of the spiral portion 213. The opening of the air outlet portion 214 away from the spiral portion 213 is an air outlet 212. The spiral line formula of the spiral portion 213 is: r = r0 + (Δr / ΔΦ)Φ.

[0069] It should be noted that the bottom of the volute 21 is a bottom opening with missing material; the volute 21 is composed of a circumferential wall and a top wall, the bottom opening of the circumferential wall is the bottom opening of the volute 21, the top wall cover is arranged on the top opening of the circumferential wall, and a notch is opened on the top wall to form an air inlet 211.

[0070] The structure of the combination of the spiral portion 213 and the air outlet portion 214 simplifies the structural composition of the volute 21 while ensuring the air outlet effect, making it easy to produce and process, saving manufacturing costs. Furthermore, the spiral portion 213 meets the design of the Archimedean spiral, which is an equal pitch spiral, that is, as the arc angle increases, the radius of the spiral portion 213 increases at a constant rate; as above, a smooth air flow path is formed, so that the air flow inside the volute 21 is smoother and more evenly distributed, which helps to improve the stability and uniformity of the air flow, reduce the formation of turbulence and vortices, thereby reducing the impact and collision of the air flow inside the volute 21, thereby reducing noise and vibration; at the same time, the smooth air flow path can reduce the resonance phenomenon and further reduce noise and vibration.

[0071] In some embodiments of the present application, the arc angle of the spiral portion 213 is θ, 5π / 6≤θ≤7π / 6; for example, θ can be any one of 5π / 6, π, 7π / 6, etc. In the spiral line formula of the spiral portion 213: the value range of Φ is 0≤Φ≤θ, that is, the definition domain of the spiral line formula is [0,θ]. r0 is the initial radius of the spiral portion, 8cm≤r0≤15cm; for example, r0 can be any one of 8cm, 9cm, 10cm, 11cm, 12cm, 13cm, 14cm, 15cm, etc. ΔΦ / Δr is the rate of increase of the radius of the spiral portion as the angle increases, 3 / π≤ΔΦ / Δr≤9 / π; for example, the rate of increase can be any one of 3 / π, 5 / π, 6 / π, 7 / π, 9 / π, etc.

[0072] Please see attached Figure 6 , preferably, θ = π, r 0＝ 11cm, ΔΦ / Δr=6 / π. As can be seen from the above, the initial radius of the spiral portion 213 is 11cm, and the radius increases by 1cm for every increase of π / 6 (i.e. 30°) in the arc angle of the spiral portion 213, that is, the radius of the spiral portion 213 at the arc angle π / 6 (i.e. 30°) is 12cm, the radius at the arc angle π / 3 (i.e. 60°) is 13cm, the radius at the arc angle π / 2 (i.e. 90°) is 14cm, the radius at the arc angle 2π / 3 (i.e. 120°) is 15cm, the radius at the arc angle 5π / 6 (i.e. 150°) is 16cm, and the radius at the arc angle π (i.e. 180°) is 17cm.

[0073] As described above, the air duct design of the volute 21 is specifically optimized, which complies with the Archimedean spiral principle and can reduce wind noise and vortex generation of airflow, thereby reducing noise and vibration.

[0074] Please see attached Figure 2-3In some embodiments of the present application, along the first direction, the heat exchanger 3 includes a first end 31 and a second end 32. The first end 31 is located at the top of the air outlet 212. The second end 32 is inclined relative to the first end 31 toward the bottom wall of the second cavity 12, so that the height of the first end 31 is greater than the height of the second end 32, and the second end 32 extends to the side wall of the second cavity 12 away from the first cavity 11.

[0075] It should be noted that the first end 31 is disposed at the top of the air outlet 212, and the airflow flowing out through the air outlet 212 will not diffuse outward through the top of the first end 31. The second end 32 is sealed to the side wall of the second cavity 12 away from the first cavity 11; as described above, it is ensured that the airflow flowing into the air inlet space 121 can only flow into the air outlet space 122 after passing through the heat exchanger 3, thereby ensuring the airflow passing through the heat exchanger 3.

[0076] As described above, the inclined setting form of the heat exchanger 3 in the second cavity 12 is defined, and the heat exchanger 3 gradually tilts downward from the first end 31 close to the first cavity 11 to the second end 32 away from the first cavity 11. Since the side of the second cavity 12 away from the first cavity 11 is a side wall of a solid structure, the side wall can limit and resist the second end 32 tilted downward thereto, making the inclined setting of the heat exchanger 3 in the second cavity 12 more stable and avoiding the occurrence of misalignment. In addition, by the inclined setting of the heat exchanger 3 in the second cavity 12, the air inlet space 121 is located below the air outlet space 122, thereby limiting the airflow to pass through the heat exchanger 3 from bottom to top, which can reduce the resistance encountered by the airflow during the circulation process and make the airflow more uniform and stable.

[0077] Please see attached Figure 2 It should be further explained that at least a portion of the side wall of the first cavity 11 away from the second cavity 12 is provided with an air inlet grille to form an air inlet surface 111; at least a portion of the top wall of the second cavity 12 is provided with an air outlet grille to form an air outlet surface 123. As described above, the number of bends in the airflow path is further increased, and the airflow path is further effectively extended.

[0078] Further, the heat exchanger 3 is diagonally arranged in the second chamber 12, and the angle between the heat exchanger 3 and the rotation axis is determined by the spatial volume of the second chamber 12. Optionally, the angle between the second chamber 12 and the rotation axis is 30°-60°; for example, the angle between the second chamber 12 and the rotation axis can be at least one of 30°, 40°, 50°, 60°, etc.

[0079] In some parallel embodiments, the first end 31 is located at the bottom of the air outlet 212; the second end 32 is inclined relative to the first end 31 toward the top wall of the second cavity 12, so that the height of the second end 32 is greater than the height of the first end 31, and the second end 32 extends to the side wall of the second cavity 12 away from the first cavity 11. As described above, the air inlet space 121 is located above the air outlet space 122, thereby limiting the airflow to pass through the heat exchanger 3 from top to bottom.

[0080] Please see attached Figure 3 In some embodiments of the present application, both ends of the heat exchanger 3 along the second direction are provided with first baffles 4 fixed to the second cavity 12, and the heat exchanger 3 is supported and fixed to the first baffles 4. The second direction is perpendicular to the first direction and the rotation axis. The two first baffles 4, the bottom wall of the second cavity 12, and the bottom wall of the heat exchanger 3 form an air inlet space 121.

[0081] It should be noted that the first baffle 4 can be a triangular support plate to form a stable support for the heat exchanger 3 .

[0082] As described above, the specific setting position of the first baffle 4 is defined. The above two first baffles 4 can not only provide reliable and stable support for the heat exchanger 3, but also form a wall surrounding the air inlet space 121, thereby restricting the flow path of the airflow.

[0083] Please see attached Figure 7 In some embodiments, a first fitting portion 41 is provided on the top of the first baffle 4; correspondingly, a first flange 33 extends outward from the side of the heat exchanger 3 along the second direction. Optionally, the first fitting portion 41 is formed by the top wall of the first baffle 4 and at least a portion of the side wall of the first baffle 4 away from the other first baffle 4, and the first fitting portion 41 is L-shaped; correspondingly, the first flange 33 is L-shaped and covers the first fitting portion 41. Further, the first flange 33 is aligned with the first fitting portion 41, and the first flange 33 and the first fitting portion 41 are sealed and fixedly connected by the first fastener, thereby completing the sealing and fixed connection of the first baffle 4 on the heat exchanger 3.

[0084] Please see attached Figure 7 In some embodiments, a second fitting portion 42 is provided at the bottom of the first baffle 4. Optionally, the second fitting portion 42 is a second flange provided on the bottom wall of the first baffle 4. Along the rotation axis, the second fitting portion 42 is aligned with the bottom wall of the second cavity 12, and the second fitting portion 42 is sealed and fixedly connected to the bottom wall of the second cavity 12 by a second fastener, thereby completing the sealing and fixed connection of the first baffle 4 to the bottom wall of the second cavity 12.

[0085] Please see attached Figure 7In some embodiments, the first baffle plate 4 forms a third fitting portion 43 near the side wall of the first cavity 11; correspondingly, the air outlet 212 is provided with a third flange 215 extending outward from the edge near the first baffle plate 4. Along the first direction, the third flange 215 is aligned with the third fitting portion 43, and the third flange 215 and the third fitting portion 43 are sealed and fixedly connected by the third fastener, thereby completing the sealing and fixed connection of the first baffle plate 4 at the air outlet 212.

[0086] Please see attached Figure 7 In some embodiments of the present application, a plurality of support rods 7 parallel to the second direction are connected between the two first baffles 4. Optionally, support rods 7 are connected between each set of opposite corners of the two first baffles 4; for example, when the first baffle 4 is a triangular support plate, three sets of opposite corners of the two triangular support plates are connected with support rods 7.

[0087] As described above, the installation and fixing effect of the two first baffles 4 on the bottom wall of the second chamber 12 can be further enhanced, as well as the firm and stable supporting and fixing effect of the first baffles 4 on the heat exchanger 3 can be further enhanced.

[0088] Please see attached Figure 7 Furthermore, a reinforcing rod 8 perpendicular to the second direction is connected between two adjacent support rods 7.

[0089] Please see attached Figure 3 In some embodiments of the present application, the heat exchanger 3 is provided with second baffles 5 at both ends along the second direction, the second baffles 5 abut against the heat exchanger 3 and are fixed to the second cavity 12. The two second baffles 5, the side wall of the second cavity 12 away from the first cavity 11, the top wall of the second cavity 12, and the top wall of the heat exchanger 3 form an air outlet space 122.

[0090] It should be noted that the top wall of the second baffle plate 5 is aligned and fits with the top wall of the second cavity 12. The second baffle plate 5 can be a triangular support plate to form a stable support on the heat exchanger 3.

[0091] As described above, the specific setting position of the second baffle plate 5 is limited, and the second baffle plate 5 forms a wall surrounding the air outlet space 122, thereby restricting the flow path of the airflow.

[0092] Please see attached Figure 3 The cooling unit includes a limiting member 6. The second baffle 5 includes a limiting portion 52, and the limiting portion 52 can be limited to the limiting member 6.

[0093] As described above, through the limiting cooperation between the limiting portion 52 and the limiting member 6, the limiting effect of the second baffle 5 in the second cavity 12 is achieved, and the accurate positioning of the second baffle 5 in the second cavity 12 is achieved, which is sealed and fixedly connected.

[0094] Please see attached Figure 3 In some embodiments, the stopper 6 is a stopper rod extending along the second direction, and the stopper 6 is fixed to the housing 1; the stopper 6 is located on the side of the second cavity 12 away from the first cavity 11, and close to the top wall of the second cavity 12. A stopper groove with missing material is formed on the side of the second baffle plate 5 away from the first cavity 11, and the stopper groove is the stopper portion 52.

[0095] Along the first direction, the second baffle 5 is pushed into the second cavity 12 from the side close to the first cavity 11 to the side away from the first cavity 11 until the limiting portion 52 is locked in the limiting member 6, indicating that the second baffle 5 is installed in place.

[0096] Please see attached Figure 7 In some embodiments, a fourth fitting portion 51 is provided at the bottom of the second baffle 5; correspondingly, a fourth flange 34 extends outward from the side of the heat exchanger 3 along the second direction. Optionally, the fourth fitting portion 51 is a fifth flange provided on the bottom wall of the second baffle 5. Further, the fourth fitting portion 51 is aligned with the fourth flange 34, and the fourth fastener completes the sealing and fixed connection between the fourth fitting portion 51 and the fourth flange 34, thereby completing the sealing and fixed connection of the second baffle 5 on the heat exchanger 3.

[0097] Please see attached Figure 7 In some embodiments, the limiting portion 52 includes a first abutting side limited to the limiting member 6, and both side edges of the first abutting side along the second direction extend outwardly with a fifth fitting portion 53. The fifth fitting portion 53 is aligned and fitted with the limiting member 6, and the fifth fastener is used to complete the sealing and fixed connection between the fifth fitting portion 53 and the limiting member 6, so as to complete the sealing and fixed connection of the second baffle 5 on the limiting member 6.

[0098] Please see attached Figure 7 In some embodiments, the side wall of the second cavity 12 away from the first cavity 11 is the first side wall; the limiting portion 52 includes a second abutting side abutting against the first side wall, and the second abutting side extends outwardly along the edge of the second direction to form a sixth fitting portion 54. The sixth fitting portion 54 is aligned with the first side wall, and the sixth fastener is used to complete the sealing and fixed connection between the sixth fitting portion 54 and the first side wall, thereby completing the sealing and fixed connection of the second baffle 5 to the first side wall.

[0099] Please see attached Figure 3-4 In some embodiments of the present application, along the second direction, a plurality of volute fans 2 are provided, and the air outlets 212 of the volute fans 2 are spliced ​​without gaps. Preferably, two volute fans 2 are provided. As described above, the cooling unit is integrated with a plurality of volute fans 2, which ensures the flow of airflow and increases the heat exchange efficiency.

[0100] Please see attached Figure 1The housing 1 includes a housing 13 with a top opening and a cover plate 14 covering the top opening. Further, the cover plate 14 is fixed to the housing 13 by a fourth fastener. As described above, the cover plate 14 can be disassembled to be separated from the housing 13, so as to facilitate the disassembly and maintenance of the components inside the housing 1.

[0101] Please see attached Figure 1 , the top of the cooling unit is provided with a lifting lug 9. As above, the lifting hook of the lifting device can be hooked on the lifting lug 9, so the disassembly and assembly and transportation of the cooling unit can be completed with the help of the lifting device, and the operation is convenient and fast.

[0102] The embodiment of the present application also provides an energy storage container, which includes a cooling unit for exchanging heat for energy storage batteries in the energy storage system, thereby solving the problem of high noise and vibration generated by the fan assembly. The advantages are brought by the above-mentioned cooling unit. For details, please refer to the relevant parts of the above-mentioned embodiment, which will not be repeated here.

[0103] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0104] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0105] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0106] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0107] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0108] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A cooling unit, characterized in that: include: A housing (1) comprises a first cavity (11) and a second cavity (12) distributed along a first direction, wherein a surrounding wall of the first cavity (11) is formed with an air inlet surface (111); A volute fan (2) is arranged in the first chamber (11), comprising a volute (21) and an impeller (22); the rotation axis of the impeller (22) is perpendicular to the bottom wall of the first chamber (11); the top wall of the volute (21) is formed with an air inlet (211), and the circumferential wall of the volute (21) is formed with an air outlet (212); A heat exchanger (3) is arranged obliquely on the second chamber (12) and divides the second chamber (12) into an air inlet space (121) and an air outlet space (122), so that the airflow flowing into the air inlet space (121) passes obliquely through the heat exchanger (3) and then flows into the air outlet space (122); the air inlet space (121) is connected to the air outlet (212), and the surrounding wall of the air outlet space (122) is formed with an air outlet surface (123); Wherein, the first direction is perpendicular to the rotation axis.

2. The cooling unit according to claim 1, characterized in that: The circumferential wall of the volute (21) comprises a spiral portion (213) and an air outlet portion (214) connected to an opening of the spiral portion (213); the opening of the air outlet portion (214) away from the spiral portion (213) is the air outlet (212); The spiral line formula of the spiral portion (213) is: r=r0+(Δr / ΔΦ)Φ.

3. The cooling unit according to claim 2, characterized in that: The arc angle of the spiral portion (213) is θ, 5π / 6≤θ≤7π / 6; 8cm≤r0≤15cm; 3 / π≤ΔΦ / Δr≤9 / π.

4. The cooling unit according to claim 1, characterized in that: Along the first direction, the heat exchanger (3) comprises a first end (31) and a second end (32); The first end (31) is located at the top of the air outlet (212); the second end (32) is inclined relative to the first end (31) in a direction close to the bottom wall of the second cavity (12), so that the height of the first end (31) is greater than the height of the second end (32), and the second end (32) extends to the side wall of the second cavity (12) away from the first cavity (11).

5. The cooling unit according to claim 4, characterized in that: Both ends of the heat exchanger (3) along the second direction are provided with first baffles (4) fixed to the second chamber (12), and the heat exchanger (3) is supported and fixed to the first baffles (4); the second direction is respectively perpendicular to the first direction and the rotation axis; The two first baffles (4), the bottom wall of the second chamber (12), and the bottom wall of the heat exchanger (3) form the air inlet space (121).

6. The cooling unit according to claim 5, characterized in that: A plurality of support rods (7) parallel to the second direction are connected between the two first baffles (4).

7. The cooling unit according to claim 4, characterized in that: The heat exchanger (3) is provided with a second baffle (5) at both ends along the second direction, and the second baffle (5) abuts against the heat exchanger (3) and is fixed to the second chamber (12); The two second baffles (5), the side wall of the second chamber (12) away from the first chamber (11), the top wall of the second chamber (12), and the top wall of the heat exchanger (3) form the air outlet space (122).

8. The cooling unit according to claim 7, characterized in that: The cooling unit comprises a limiting member (6); the second baffle (5) comprises a limiting portion (52), and the limiting portion (52) can be limited to the limiting member (6).

9. The cooling unit according to any one of claims 1 to 8, characterized in that: Along the second direction, a plurality of volute fans (2) are provided, and the air outlets (212) of the volute fans (2) are spliced ​​without gaps; and / or, The housing (1) comprises an outer shell (13) having a top opening and a cover plate (14) sealed on the top opening; and / or, A lifting lug (9) is provided on the top of the cooling unit.

10. An energy storage container, characterized in that: It comprises a cooling unit for exchanging heat for the energy storage battery in the energy storage system; the cooling unit is a cooling unit as described in any one of claims 1-9.

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