Air cooling and heat dissipation integrated energy storage cabinet

Abstract

The utility model relates to the technical field of wind power plant equipment, in particular to an air cooling and heat dissipation integrated energy storage cabinet, an air supply mechanism with a plurality of air supply directions is arranged in a battery cabin of the air cooling and heat dissipation integrated energy storage cabinet, so that cold air blown out by an air conditioning unit is uniformly supplied into a battery cluster, and the battery cluster consists of a plurality of battery packs. A plurality of battery pack air inlets are formed in the battery pack, and cold air quickly enters the battery pack through the formed battery pack air inlets to exchange heat with the battery cells, is converged to the front air return duct and the top air return duct through the battery pack, and finally returns to the interior of the air conditioning unit through the air return cover to form a refrigeration cycle. The air supply mechanism is provided with a plurality of air supply ducts (the main air supply duct, the central air supply duct and the side air supply ducts) with different air supply directions, and the air supply ducts are uniformly arranged around the battery cluster, so that the battery pack in the battery cluster can be timely and effectively cooled, the heat dissipation effect is obvious, and the heat dissipation amount is large.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power plant equipment, in particular to an air-cooled heat dissipation integrated energy storage cabinet. Background Art

[0002] With the rapid development of the energy storage industry, the application of energy storage products is becoming more and more extensive. The application of energy storage cabinets in energy storage products accounts for a relatively large proportion. Therefore, the requirements for the energy density and power of energy storage cabinets in the energy storage industry are also increasing. An energy storage cabinet is a device for storing electric energy, usually composed of a battery unit, a control unit, a conversion unit, etc. The energy storage cabinet can convert electric energy into chemical energy and then convert the chemical energy back into electric energy for supply to the power grid or load when needed. A large amount of heat will be generated during the operation process. If the energy storage cabinet is in a high-temperature state for a long time, the charge and discharge performance and cycle life of the battery will be greatly reduced. In order to make the energy storage cabinet operate normally and efficiently, it is necessary to dissipate the heat generated by the energy storage cabinet to ensure that the temperature of the energy storage cabinet is maintained within the optimal range. On the other hand, since the battery system in the energy storage cabinet is composed of multiple battery cells connected in series, the capacity of the battery cells is greatly affected by the operating temperature. Therefore, it is necessary to control the temperature difference between the inside of the battery module and between the battery cells within a certain range to ensure the consistency of the working temperatures between the battery cells, which is the key to ensuring the capacity of the energy storage cabinet.

[0003] However, at present, most of the energy storage cabinet air conditioners using air-cooled heat dissipation are installed at the front end of the energy storage cabinet, which affects the aesthetics, and the noise of the air conditioner installed on the front is relatively large and it is not convenient for maintenance. At the same time, the air duct design of most air-cooled energy storage cabinets is single. The cooling range of the cold air blown out by the energy storage cabinet air conditioner is limited and the heat dissipation amount is small, the heat dissipation is uneven, and the temperature difference between the battery cells is large, which affects the power consumption capacity of the energy storage cabinet. Therefore, it is necessary to design an air-cooled storage cabinet that can dissipate heat evenly, has a high consistency of working temperatures between battery cells, and is convenient for maintenance. Summary of the Utility Model

[0004] The utility model provides an air-cooled heat dissipation integrated energy storage cabinet that can dissipate heat evenly, has a high consistency of working temperatures between battery cells, and is convenient for maintenance, aiming to solve one or more of the above problems and other potential problems.

[0005] The utility model provides an air-cooled heat dissipation integrated energy storage cabinet, which is characterized by comprising:

[0006] An energy storage cabinet body, a battery compartment is arranged inside the energy storage cabinet body, a plurality of juxtaposed battery clusters are installed in the battery compartment, an air conditioner unit is installed at a position near the battery compartment at the rear of the energy storage cabinet body, an air return port and an air supply port are respectively arranged at the upper and lower sides of the air conditioner unit close to the battery cluster, a heat dissipation system is arranged in the battery compartment, and the heat dissipation system includes a air supply mechanism for delivering cold air arranged around the battery cluster and an air return mechanism for recovering the return air after heat exchange with the battery cluster to the air conditioner unit;

[0007] The air supply mechanism includes a main air supply duct arranged between the battery cluster and the rear part of the battery compartment, a central air supply duct arranged between the juxtaposed battery clusters, and two side air supply ducts respectively arranged between the battery cluster and the two side parts of the battery compartment;

[0008] The air return mechanism includes a front air return duct arranged between the battery cluster and the front part of the battery compartment, a top air return duct communicated with the front air return duct and arranged between the battery cluster and the upper part of the battery compartment, and an air return hood for connecting the top air return duct with the air return port of the air conditioner unit.

[0009] The battery compartment of the present utility model has an air supply mechanism with multiple air supply directions, so as to evenly send the cold air blown out by the air conditioner unit into the battery cluster. The battery cluster is composed of a plurality of battery packs, and a plurality of battery pack air inlets are opened on the battery packs. The cold air quickly enters the interior of the battery pack through the opened battery pack air inlets to exchange heat with the battery cells, converges to the front air return duct and the top air return duct via the battery packs, and finally returns to the interior of the air conditioner unit through the air return hood to form a refrigeration cycle.

[0010] Since the air supply mechanism is provided with a plurality of air supply ducts with different air supply directions (main air supply duct, central air supply duct, side air supply duct), and these several air supply ducts are evenly arranged around the battery cluster, the battery packs inside the battery cluster can be cooled in a timely and effective manner, with obvious heat dissipation effect and large heat dissipation amount.

[0011] Furthermore, in this embodiment, an air return mechanism is also provided to timely recover the air return after heat exchange with the battery packs, form a negative pressure inside the battery compartment, accelerate the flow rate of the air flow circulation inside the battery compartment, enable the cold air blown out by the air conditioner unit to enter the battery pack faster, accelerate the heat exchange speed, improve the heat exchange efficiency, thereby timely reduce the temperature difference of the battery cells, improve the cycle life, and ensure the power consumption capacity of the energy storage cabinet.

[0012] In some embodiments, the air supply port of the air conditioner unit is communicated with the main air supply duct, the main air supply duct is communicated with the central air supply duct and the side air supply ducts, and the front air return duct is communicated with the central air supply duct and the side air supply ducts.

[0013] In this embodiment, when the energy storage cabinet dissipates heat, the air supply port of the air conditioner unit blows out cold air. The cold air first flows into the main air supply duct communicated with the air supply port, and then respectively flows into the communicated central air supply duct and side air supply ducts along the main air supply duct.

[0014] In some embodiments, the air supply mechanism further includes a deflector plate arranged in the main air supply duct for dispersing the cold air blown out by the air supply port of the air conditioner unit.

[0015] In this embodiment, a deflector is provided at the air supply outlet, so that the blown cold air diffuses around along the deflector, avoiding excessive wind speed and excessive air volume at the air supply outlet, which may lead to different heat exchange efficiencies between the battery packs at different positions and the cold air, resulting in uneven temperature inside the battery cells and affecting the temperature consistency of the battery packs.

[0016] In some embodiments, a honeycomb hole structure for increasing wind resistance is provided at the position corresponding to the air supply outlet on the deflector.

[0017] Since the wind speed and air volume are the largest at the air supply outlet, if no deflector is set for diversion, it may lead to too high heat exchange efficiency near the air supply outlet and too low temperature of the battery cells near the air supply outlet; while if a fully enclosed deflector is set for shielding, all the cold air will be blown to the surroundings, and there will be no cold air for heat exchange for the battery packs near the air supply outlet. Therefore, a through honeycomb hole structure needs to be provided at the position corresponding to the air supply outlet on the deflector, so that the cold air blown out from the air supply outlet can reach the central air supply duct at the rear of the deflector through the honeycomb hole structure for heat exchange. At the same time, the honeycomb hole structure will block the cold air, thereby weakening the air volume and wind speed of the cold air, making the air volume and wind speed of the cold air entering the central air supply duct and the side air supply duct uniform, so as to ensure the unity of heat exchange efficiency.

[0018] In some embodiments, the deflector includes a main board and a flow control board connected to the main board and capable of adjusting the bending angle for adjusting the air supply direction.

[0019] In this embodiment, the deflector is divided into two parts. When the air supply outlet is in the central position, the center of the deflector is installed corresponding to the air supply outlet, and the main board and the flow control board are arranged in the same plane. When the air supply outlet is in the upper or lower position, the air volume at the deflected position of the air supply outlet will be larger. At this time, the flow control board is installed corresponding to the air supply outlet, and at the same time, the flow control board is bent towards the air supply outlet, and the main board is arranged parallel to the total air supply duct, controlling the air volume towards the side of the flow control board to be less than the air volume towards the side of the main board, so as to balance and reduce the uneven air volume problem caused by the position deviation of the air supply outlet.

[0020] In some embodiments, the width of the central air supply duct is at least twice that of the side air supply duct.

[0021] Since the central air supply duct is arranged between the juxtaposed battery clusters, heat exchange needs to be carried out between both sides of the central air supply duct and the battery packs. Therefore, the width of the central air supply duct needs to be set at least twice that of the side air supply duct to make the air volume on both sides of the battery pack similar and ensure the temperature consistency of the battery pack.

[0022] In some embodiments, the return air mechanism further includes an exhaust fan provided at the position corresponding to the center of the battery cluster at the front of the energy storage cabinet body and used for pumping the return air after heat exchange in the battery cluster to the front return air duct.

[0023] In this embodiment, when the exhaust fan works, it will draw the air in the battery pack into the front return air duct, making the internal space of the battery pack in negative pressure. The cold air blown out by the air conditioner unit is evenly sent to the sides of each battery pack under the action of the deflector. Under the action of negative pressure, it enters the battery pack through the battery pack air inlet and exchanges heat with the battery cells. Then, the exhaust fan draws the return air heated after heat exchange in the battery pack into the front return air duct and sends it back to the air conditioner unit through the top return air duct and the return air hood. Further, adding an exhaust fan can accelerate the flow rate of the air flow circulation in the energy storage cabinet body, enabling the battery pack to achieve heat dissipation and cooling in a timely and effective manner.

[0024] In some embodiments, a seal is provided between the return air hood and the return air port member to ensure stable return air.

[0025] The return air hood is installed on the energy storage cabinet body and sealed with the return air port on the air conditioner unit through a seal. When the rear door of the installed air conditioner unit is opened, the return air hood is separated from the return air port. When the rear door is closed, the seal can fill the gap between the two to make them tightly connected, thereby ensuring stable circulation of the return air, preventing leakage of the return air and mixing with the cold air, and affecting the cooling and heat dissipation effect of the energy storage cabinet.

[0026] In some embodiments, an electrical compartment is also provided in the energy storage cabinet body in parallel with the battery compartment. A power conversion module, a main control box, a distribution box, and a circuit breaker are installed in the electrical compartment along the height direction.

[0027] In some embodiments, louvers for ventilation are provided at a position of the energy storage cabinet body close to the electrical compartment. An air outlet is provided at the rear of the electrical compartment. A negative pressure fan is provided in the electrical compartment to cooperate with the louvers and the air outlet to dissipate heat in the electrical compartment.

[0028] In this embodiment, the electrical compartment and the battery compartment are arranged in parallel and integrated, reducing the floor area, improving the system integration rate, and facilitating transportation and installation.

[0029] By implementing the above technical solutions, the present utility model has the following advantages:

[0030] 1. The battery compartment of the present utility model is provided with a air supply mechanism with multiple air supply directions, enabling the battery packs inside the battery cluster to achieve heat dissipation and cooling in a timely and effective manner, with obvious heat dissipation effect and large heat dissipation amount.

[0031] 2. The present utility model is provided with a return air mechanism that can timely recover the return air after heat exchange with the battery pack, form negative pressure inside the battery compartment, accelerate the flow rate of the air flow circulation in the battery compartment, enable the cold air blown out by the air conditioner unit to enter the battery pack faster, accelerate the heat exchange speed, improve the heat exchange efficiency, thereby timely reducing the temperature difference of the battery cells, improving the cycle life, and ensuring the power consumption capacity of the energy storage cabinet.

[0032] 3. The utility model is provided with a flow guide plate at the air supply opening, which can avoid excessive wind speed and excessive air volume at the air supply opening, balance the heat exchange efficiency between the battery packs at different positions and the cold air, balance the temperature inside the battery cells, and ensure the temperature consistency of the battery packs.

[0033] 4. The position of the flow guide plate corresponding to the air supply opening is provided with a through honeycomb hole structure, so that the air volume and wind speed of the cold air entering the central air supply duct and the cold air entering the side air supply duct are uniform, so as to ensure the unity of heat exchange efficiency.

[0034] 5. The structure of the flow guide plate of the utility model is designed to balance and reduce the problem of uneven air volume caused by the deviation of the position of the air supply opening.

[0035] 6. By designing different widths of the central air supply duct and the side air supply duct, the utility model makes the air volume on both sides of the battery pack similar, ensuring the temperature consistency of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 is the front view of the energy storage cabinet body of the present utility model;

[0038] Figure 2 is the front view of the energy storage cabinet body after removing the front door;

[0039] Figure 3 is the side sectional view of the energy storage cabinet body of the present utility model;

[0040] Figure 4 is the rear view of the energy storage cabinet body after removing the rear door;

[0041] Figure 5 is the top view of the battery compartment air duct of the present utility model;

[0042] Figure 6 is the schematic diagram of the internal structure of the energy storage cabinet body of the present utility model;

[0043] Figure 7 is the schematic diagram of the structure of the flow guide plate of the present utility model.

[0044] The reference numerals in the drawings represent:

[0045] 1. Energy storage cabinet body, 11. Front door, 12. Rear door, 121. Air conditioner unit, 13. Column, 2. Battery compartment, 21. Battery cluster, 211. Battery pack, 2111. Battery pack air inlet, 22. Main air supply duct, 23. Central air supply duct, 24. Side air supply duct, 25. Front return air duct, 26. Top return air duct, 27. Return air hood, 271. Seal, 28. Deflector, 281. Honeycomb hole structure, 282. Main board, 283. Flow control board, 29. Exhaust fan, 121a. Return air inlet, 121b. Air supply outlet, 3. Electrical compartment, 31. Power conversion module, 32. Main control box, 33. Distribution box, 34. Circuit breaker, 35. Louver. Detailed implementation manner

[0046] The following further elaborates on the present utility model in detail based on the accompanying drawings and specific embodiments.

[0047] It should be noted that the following implementation cases are only used to illustrate the technical solutions of the present utility model, rather than limiting it; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present utility model.

[0048] In the following description, terms such as "inner", "outer", "upper", "lower", "left", "right", etc. indicating orientation or position relationship are only for the convenience of describing the embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model.

[0049] This embodiment provides an air-cooled integrated energy storage cabinet, as Figures 1-4 shown, which is characterized by including:

[0050] An energy storage cabinet body 1, a battery compartment 2 is provided inside the energy storage cabinet body 1, a number of parallel battery clusters 21 are installed inside the battery compartment 2, an air conditioner unit 121 is installed at a position near the battery compartment 2 at the rear of the energy storage cabinet body 1, a return air inlet 121a and an air supply outlet 121b are respectively provided on the upper and lower sides of the air conditioner unit 121 close to the battery cluster 21, a heat dissipation system is provided inside the battery compartment 2, and the heat dissipation system includes a air supply mechanism for delivering cold air arranged around the battery cluster 21 and a return air mechanism for recovering the return air after heat exchange with the battery cluster 21 to the air conditioner unit 121;

[0051] The air supply mechanism includes a main air supply duct 22 disposed between the battery cluster 21 and the rear part of the battery compartment 2, a central air supply duct 23 disposed between the juxtaposed battery clusters 21, and two side air supply ducts respectively disposed between the battery cluster 21 and the two side parts of the battery compartment 2;

[0052] The air return mechanism includes a front air return duct 25 disposed between the battery cluster 21 and the front part of the battery compartment 2, a top air return duct 26 disposed between the battery cluster 21 and the upper part of the battery compartment 2 and communicating with the front air return duct 25, and an air return cover 27 for connecting the top air return duct 26 with the air return port 121a of the air conditioner unit 121.

[0053] As Figure 3 、 Figure 5 As shown, the air conditioner unit 121 of this embodiment is installed on the rear door 12 of the energy storage cabinet body 1. The air supply port 121b of the air conditioner unit 121 communicates with the main air supply duct 22 and blows cold air into the main air supply duct 22. An air supply mechanism with multiple air supply directions is provided in the battery compartment 2, so as to evenly send the cold air blown out by the air conditioner unit 121 into the battery cluster 21. The battery cluster 21 is composed of a number of battery packs 211. A number of battery pack air inlets 2111 are opened on the battery pack 211. The cold air quickly enters the inside of the battery pack 211 through the opened battery pack air inlets 2111 to exchange heat with the battery cells, and converges to the front air return duct 25 and the top air return duct 26 through the battery pack 211, and finally returns to the inside of the air conditioner unit 121 through the air return cover 27 to form a refrigeration cycle.

[0054] As Figure 5 As shown, since the air supply mechanism is provided with a plurality of air supply ducts with different air supply directions (main air supply duct 22, central air supply duct 23, side air supply duct 24), and these several air supply ducts are evenly arranged around the battery cluster 21, the battery packs 211 inside the battery cluster 21 can be cooled in a timely and effective manner, with obvious heat dissipation effect and large heat dissipation amount.

[0055] Furthermore, as Figure 3 As shown, in this embodiment, an air return mechanism is also provided to timely recover the air return after heat exchange with the battery pack 211, form a negative pressure inside the battery compartment 2, accelerate the air flow circulation speed inside the battery compartment 2, enable the cold air blown out by the air conditioner unit 121 to enter the battery pack 211 faster, accelerate the heat exchange speed, improve the heat exchange efficiency, thereby timely reducing the temperature difference of the battery cells, improving the cycle life, and ensuring the power consumption capacity of the energy storage cabinet. At the same time, installing the air conditioner unit 121 at the rear of the energy storage cabinet body 1 is convenient for maintenance and more aesthetically pleasing as a whole.

[0056] In some embodiments, as Figure 3 、 Figure 6As shown, the air supply outlet 121b of the air conditioner unit 121 is communicated with the main air supply duct, the main air supply duct is communicated with the central air supply duct 23 and the side air supply duct 24, and the front air return duct 25 is communicated with the central air supply duct 23 and the side air supply duct 24.

[0057] In this embodiment, as Figure 3 , Figure 5 shown, when the energy storage cabinet dissipates heat, the air supply outlet 121b of the air conditioner unit 121 blows out cold air. The cold air first flows into the main air supply duct 22 communicated with the air supply outlet 121b, and then flows into the communicated central air supply duct 23 and side air supply duct 24 along the main air supply duct 22 respectively. A part of the cold air flows into the gaps between the juxtaposed battery clusters 21 along the central air supply duct 23 and flows into the battery packs 211 on both sides through the battery pack air inlet 2111 for heat exchange. A part of the cold air flows into the gap between the battery cluster 21 and the side of the electrical cabin 3 along the side air supply duct 24 and flows into the battery pack 211 through the battery pack air inlet 2111 for heat exchange.

[0058] In some embodiments, the air supply mechanism further includes a guide vane 28 disposed in the main air supply duct 22 for dispersing the cold air blown out from the air supply outlet 121b of the air conditioner unit 121.

[0059] As Figure 3 shown, in this embodiment, a guide vane 28 is provided at the air supply outlet 121b. The cold air blown out by the air conditioner unit 121 blows to the middle of the guide vane 28 and diffuses around along the guide vane 28 and flows into the central air supply duct 23 and the side air supply duct 24, avoiding excessive wind speed and excessive air volume at the air supply outlet 121b, resulting in excessive air volume in the central air supply duct 23, resulting in excessive heat exchange efficiency between the battery packs 211 near the central air supply duct 23 and the cold air, resulting in uneven temperature inside the battery cells and affecting the temperature consistency of the battery packs 211.

[0060] In some embodiments, as Figure 4 shown, a honeycomb hole structure 281 for increasing wind resistance is provided at the position of the guide vane 28 corresponding to the air supply outlet 121b.

[0061] Since the wind speed and air volume are the largest at the air supply outlet 121b, if no guide vane 28 is provided for diversion, it may cause too high heat exchange efficiency near the air supply outlet 121b and too low temperature of the battery cells near the air supply outlet 121b. If a fully enclosed guide vane 28 is provided for shielding, all the cold air will be blown to the surroundings and there will be no cold air for heat exchange in the battery packs 211 near the air supply outlet 121b. Therefore, a through honeycomb hole structure 281 needs to be provided at the position of the guide vane 28 corresponding to the air supply outlet 121b, as Figure 4As shown, a column 13 for support is provided inside the energy storage cabinet body 1. The battery cluster 21 is installed on the column 13. A central air supply duct 23 is provided between the columns 13. A deflector 28 is arranged in the main air supply duct 22 opposite to the air supply opening 121b. The width and position of the honeycomb hole structure 281 are corresponding to the central air supply duct 23 and the air supply opening 121b of the air conditioner unit 121, so that the cold air blown out from the air supply opening 121b can reach the central air supply duct 23 behind the deflector 28 through the honeycomb hole structure 281 for heat exchange. At the same time, the honeycomb hole structure 281 will block the cold air, thereby weakening the air volume and air speed of the cold air. The blocked cold air flows along the deflector 28 to the side air supply duct 24 again, so that the air volume and air speed of the cold air entering the central air supply duct 23 and the cold air entering the side air supply duct 24 are uniform, so as to ensure the unity of heat exchange efficiency.

[0062] In some embodiments, as Figure 7 shown, the deflector 28 includes a main board 282 and a flow control board 283 connected to the main board 282 and capable of adjusting the bending angle for adjusting the air supply direction.

[0063] Since the air supply openings 121b of different specifications of the air conditioner units 121 are in different positions, if the deflector 28 is a flat plate without a bending arc, when the air supply opening 121b is in an upper or lower position, the air volumes on the upper and lower sides of the deflector 28 cannot be unified.

[0064] Therefore, in this embodiment, the deflector 28 is divided into two parts. When the air supply opening 121b is in the central position, the center of the deflector 28 is installed corresponding to the air supply opening 121b, and the main board 282 and the flow control board 283 are arranged in the same plane. When the air supply opening 121b is in an upper or lower position, the air volume at the deflected position of the air supply opening 121b will be larger. At this time, the flow control board 283 is installed corresponding to the air supply opening 121b, and at the same time, the flow control board 283 is bent in the direction of the air supply opening 121b. The main board 282 is arranged parallel to the main air supply duct 22, and the air volume toward the side of the flow control board 283 is controlled to be less than the air volume toward the side of the main board 282, so as to balance and reduce the uneven air volume problem caused by the position deviation of the air supply opening 121b. As Figure 3 shown, the air supply opening 121b of the air conditioner unit 121 in the embodiment is in an upper position. Therefore, the flow control board 283 is installed in the upper position and bent in the direction of the air supply opening 121b to control the air volume.

[0065] In some embodiments, as Figure 5 shown, the width of the central air supply duct 23 is at least twice that of the side air supply duct 24.

[0066] Since the central air supply duct 23 is arranged between the juxtaposed battery clusters 21, heat exchange needs to be carried out between both sides of the central air supply duct 23 and the battery packs 211. Therefore, the width of the central air supply duct 23 needs to be set at least twice that of the side air supply duct 24 to make the air volumes on both sides of the battery pack 211 similar and ensure the temperature consistency of the battery pack 211.

[0067] In some embodiments, as Figure 2 shown, the return air mechanism further includes an air extraction fan 29 arranged at the front part of the energy storage cabinet body 1 corresponding to the center of the battery cluster 21 and used for extracting the return air after heat exchange in the battery cluster 21 to the front return air duct 25.

[0068] In this embodiment, when the air extraction fan 29 works, the air in the battery pack 211 will be extracted into the front return air duct 25, making the internal space of the battery pack 211 in negative pressure. The cold air blown out by the air conditioner unit 121 is evenly sent to the sides of each battery pack 211 under the action of the deflector 28. Under the action of the negative pressure, it enters the battery pack 211 through the battery pack air inlet 2111 to exchange heat with the battery cells, and then the air extraction fan 29 extracts the return air heated after heat exchange in the battery pack 211 into the front return air duct 25, and sends it back to the air conditioner unit 121 through the top return air duct 26 and the return air cover 27. Further, adding the air extraction fan 29 can accelerate the flow rate of the air flow circulation in the energy storage cabinet body 1, enabling the battery pack 211 to achieve heat dissipation and cooling in a timely and effective manner.

[0069] In some embodiments, a seal 271 for ensuring stable return air is provided between the return air cover 27 and the air return port 121a.

[0070] As Figure 3 、 Figure 4 shown, since the air conditioner unit 121 is arranged on the back door 12 of the energy storage battery compartment 2, the back door 12 can be opened for convenient maintenance. The return air cover 27 is arranged on the energy storage cabinet body 1 and sealed with the air return port 121a on the air conditioner unit 121 through the seal 271. When the back door 12 installing the air conditioner unit 121 is opened, the return air cover 27 is separated from the air return port 121a. When the back door 12 is closed, the seal 271 can fill the gap between the two to make them tightly connected, thereby ensuring the stable circulation of the return air, preventing the leakage of the return air and the mixing with the cold air, and affecting the cooling and heat dissipation effect of the energy storage cabinet.

[0071] In some embodiments, an electrical compartment 3 is further provided in the energy storage cabinet body 1 in parallel with the battery compartment 2. A power conversion module 31, a main control box 32, a distribution box 33, and a circuit breaker 34 are installed in the electrical compartment 3 along the height direction.

[0072] In some embodiments, a louver 35 for ventilation is provided at a position of the energy storage cabinet body 1 close to the electrical compartment 3. An air outlet is provided at the rear of the electrical compartment 3. A negative pressure fan is provided in the electrical compartment 3 to cooperate with the louver 35 and the air outlet to dissipate heat from the electrical compartment 3.

[0073] In this embodiment, as Figure 2 shown, the electrical compartment 3 and the battery compartment 2 are arranged side by side and integrated integrally, reducing the floor area and improving the system integration rate, which is convenient for transportation and installation. The energy storage cabinet body 1 is divided into the electrical compartment 3 and the battery compartment 2 by an intermediate partition. The power conversion module 31, the main control box 32, the distribution box 33, and the circuit breaker 34 are installed in the electrical compartment 3 along the height direction. The air conditioner unit 121, the flow guide plate 28, and the battery pack 211 are installed in the battery compartment 2. This integrated design method improves the system integration rate and reduces the floor area.

[0074] Among them, through the negative pressure fan (not shown in the figure) in the electrical compartment 3, external air is inhaled through the louver 35 to dissipate heat and cool the power conversion module 31 in the electrical compartment 3, and is discharged through the air outlet (not shown in the figure) on the back of the electrical compartment 3 to ensure the safe and efficient operation of the power conversion module 31.

[0075] The applicant declares that the above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model fall within the protection scope and the disclosure scope of the present utility model.

Claims

1. An air-cooled integrated energy storage cabinet, characterized in that Including: An energy storage cabinet body (1), within which a battery compartment (2) is provided. A number of juxtaposed battery clusters (21) are installed in the battery compartment (2). An air-conditioning unit (121) is installed at a position near the battery compartment (2) at the rear of the energy storage cabinet body (1). Return air inlets (121a) and air supply outlets (121b) are respectively provided on the upper and lower sides of the air-conditioning unit (121) close to the battery clusters (21). A heat dissipation system is provided in the battery compartment (2), and the heat dissipation system includes a air supply mechanism for conveying cold air arranged around the battery clusters (21) and a return air mechanism for recovering the return air after heat exchange with the battery clusters (21) to the air-conditioning unit (121); The air supply mechanism includes a main air supply duct (22) arranged between the battery clusters (21) and the rear part of the battery compartment (2), a central air supply duct (23) arranged between the juxtaposed battery clusters (21), and two side air supply ducts respectively arranged between the battery clusters (21) and the two side parts of the battery compartment (2); The return air mechanism includes a front return air duct (25) arranged between the battery clusters (21) and the front part of the battery compartment (2), a top return air duct (26) communicated with the front return air duct (25) and arranged between the battery clusters (21) and the upper part of the battery compartment (2), and a return air cover (27) for connecting the top return air duct (26) with the return air inlet (121a) of the air-conditioning unit (121).

2. The air-cooled integrated energy storage cabinet according to claim 1, characterized in that, The air supply outlet (121b) of the air-conditioning unit (121) is communicated with the main air supply duct, the main air supply duct is communicated with the central air supply duct (23) and the side air supply ducts (24), and the front return air duct (25) is communicated with the central air supply duct (23) and the side air supply ducts (24).

3. The air-cooled integrated energy storage cabinet according to claim 2, wherein, The air supply mechanism further includes a flow deflector (28) arranged in the main air supply duct (22) for dispersing the cold air blown out from the air supply outlet (121b) of the air-conditioning unit (121).

4. The air-cooled integrated energy storage cabinet according to claim 3, wherein, At a position corresponding to the air supply outlet (121b) on the flow deflector (28), a honeycomb hole-like structure (281) for increasing air resistance is provided.

5. The air-cooled integrated energy storage cabinet according to claim 4, characterized in that The flow deflector (28) includes a main board (282) and a flow control board (283) connected to the main board (282) and capable of adjusting the bending angle for adjusting the air supply direction.

6. The air-cooled integrated energy storage cabinet according to claim 5, characterized in that The width of the central air supply duct (23) is at least twice that of the side air supply duct (24).

7. The air-cooled integrated energy storage cabinet according to claim 6, wherein The return air mechanism further includes an exhaust fan (29) arranged at a position corresponding to the center of the battery clusters (21) at the front part of the energy storage cabinet body (1) and used for pumping the return air after heat exchange in the battery clusters (21) to the front return air duct (25).

8. The air-cooled integrated energy storage cabinet according to claim 7, wherein A sealing member (271) for ensuring stable return air is provided between the return air cover (27) and the return air inlet (121a).

9. The air-cooled integrated energy storage cabinet according to claim 8, wherein, An electrical compartment (3) is also provided in the energy storage cabinet body (1) juxtaposed with the battery compartment (2). A power conversion module (31), a main control box (32), a distribution box (33), and a circuit breaker (34) are installed in the electrical compartment (3) along the height direction.

10. The air-cooled integrated energy storage cabinet according to claim 9, characterized in that, A louver (35) for ventilation is provided at a position of the energy storage cabinet body (1) close to the electrical compartment (3). An air outlet is provided at the rear of the electrical compartment (3). A negative pressure fan is provided in the electrical compartment (3) and is matched with the louver (35) and the air outlet to dissipate heat from the electrical compartment (3).

Images