Energy storage cabinet

Abstract

The utility model relates to the field of electronic power, and discloses an energy storage cabinet. The energy storage cabinet comprises a cabinet body, a battery pack and an exhaust device, the cabinet body is used for containing the battery pack and the exhaust device, and the exhaust device comprises a shell, a first fan and a plurality of rectiblocks. The shell is fixed to the side wall of the cabinet body, the shell and the side wall of the cabinet body define an air duct, the shell comprises a first air inlet, the side wall of the cabinet body comprises an air outlet, the first air inlet communicates with the air duct and the interior of the cabinet body, and the air outlet communicates with the air duct and the exterior of the cabinet body; the first fan is mounted at the first air inlet; the plurality of rectiblocks are fixed on the inner wall of the shell, the plurality of rectiblocks are arranged in a turbine shape around the peripheral side of the air inlet, and the arrangement direction of the plurality of rectiblocks is the same as the rotating direction of blades of the fan. The turbine-shaped structure formed by the plurality of rectiblocks can effectively improve the airflow direction of the air outlet side of the first fan, so that the rapid exhaust capacity of the exhaust device is improved, and the use safety of the energy storage cabinet is improved.

Description

Technical Field

[0001] The utility model relates to the field of electronic power, in particular to an energy storage cabinet. Background Art

[0002] Energy storage cabinets are devices that can store electrical energy through a certain medium and release the stored energy to generate electricity when needed. Energy storage cabinets can be used as load balancing devices and backup power sources in various industrial and commercial scenarios to ensure continuous power supply for electrical facilities in these scenarios and ensure the normal operation of electrical facilities.

[0003] The battery pack is the main device for storing and releasing electric energy in the energy storage cabinet. The battery pack may include one or more battery modules, and each battery module may be formed by multiple battery cells connected in series. At present, lithium-ion batteries are usually used as battery cells in energy storage cabinets. Although lithium-ion batteries have many advantages such as cleanliness, high cycle times and no memory effect, they are also prone to thermal runaway under conditions of thermal abuse, mechanical abuse and electrical abuse. Lithium-ion batteries will produce a large amount of gas when thermal runaway occurs. If a large amount of gas accumulates in the energy storage cabinet, there will be a risk of fire or even explosion. Utility Model Content

[0004] The utility model provides an energy storage cabinet to improve the rapid exhaust capability of the energy storage cabinet, thereby improving the use safety of the energy storage cabinet.

[0005] In the first aspect, the present application provides an energy storage cabinet, which may include a cabinet, a battery pack and an exhaust device, wherein the battery pack and the exhaust device are contained in the cabinet, and the exhaust device may be used to discharge the gas in the cabinet to the outside of the cabinet. The exhaust device may include a first shell, a first fan and a plurality of rectifiers, wherein the first shell is fixed to the side wall of the cabinet, and the first shell and the side wall of the cabinet may be enclosed to form an air duct, the first shell includes a first air inlet, and the first air inlet may connect the air duct with the inside of the cabinet; the side wall of the cabinet includes an air outlet, and the air outlet may connect the air duct with the outside of the cabinet. The first fan is installed at the first air inlet, and the first fan includes a plurality of first blades, the air inlet side of the first fan is arranged toward the inside of the cabinet, and the air outlet side of the first fan is arranged toward the inside of the air duct, so that the first fan can deliver the gas inside the cabinet into the air duct when in operation. A plurality of rectifiers are fixed to the inner wall of the first shell, and the plurality of rectifiers are arranged in a turbine shape around the circumference of the first air inlet, and the arrangement direction of the plurality of rectifiers is the same as the rotation direction of the first blades. In this way, the turbine-shaped structure formed by the plurality of rectifiers can effectively improve the airflow direction on the air outlet side of the first fan, reduce gas vortex, and increase the rate at which the gas flows in the air duct to the air outlet, thereby helping to improve the rapid exhaust capacity of the exhaust device, thereby improving the safety of the energy storage cabinet.

[0006] In some embodiments, the first fan may also include a first base and a first mounting bracket, the first rotating shaft may be rotatably disposed on the first base, the first base is fixedly connected to the first mounting bracket, and the first mounting bracket may be fixedly connected to the inner wall of the first air inlet, so that the first fan can be installed on the first air inlet through the first mounting bracket.

[0007] In some embodiments, the energy storage cabinet further includes a second shell, the second shell is located between the first shell and the battery pack, the first shell includes a first side panel, the first side panel and the side wall of the cabinet are arranged opposite to each other along a first direction, and the second shell and the first side panel enclose a flue. The projection of the second shell on the side wall of the cabinet covers the projection of the first air inlet on the side wall of the cabinet, the second shell includes a smoke inlet, the smoke inlet can connect the flue with the interior of the cabinet, and the aforementioned first air inlet can be used as a smoke exhaust port of the flue. The gas generated by the battery pack can first enter the flue through the smoke inlet, further enter the air duct through the flue, and finally be discharged to the outside of the cabinet by the air duct.

[0008] In some embodiments, the exhaust device may further include a second fan and a guide plate. The first shell includes a second air inlet, the projection of the second air inlet on the side wall of the cabinet is located between the projection of the first air inlet on the side wall of the cabinet and the air outlet, the second fan is installed at the second air inlet, the second fan includes a plurality of second blades, the projection of the plurality of second blades on the side wall of the cabinet is located within the projection range of the second air inlet on the side wall of the cabinet, the air inlet side of the second fan is arranged toward the interior of the cabinet, and the air outlet side of the second fan is arranged toward the air duct, so that the second fan can deliver the gas inside the cabinet into the air duct during operation. The guide plate includes a first sub-plate and a second sub-plate, the first sub-plate is located between the first air inlet and the second air inlet, and one end of the first sub-plate is fixedly connected to the inner wall of the first shell, the other end of the first sub-plate is connected to the second sub-plate, and the projections of the first sub-plate and the second sub-plate on the side wall of the cabinet cover the projections of the second air inlet on the side wall of the cabinet. Through this design, the guide plate can isolate the airflow on the outlet side of the second fan from the airflow on the outlet side of the first fan, reduce the vortex generated by the mutual interference of the airflow on the outlet side of the second fan and the airflow on the outlet side of the first fan, thereby helping to increase the exhaust rate of the exhaust device.

[0009] Exemplarily, the first sub-plate and the second sub-plate may be an integrally formed structure to simplify the manufacturing process of the guide plate.

[0010] In some embodiments, the angle between the first sub-plate and the second sub-plate is an obtuse angle, or it can be understood that the end at which the first sub-plate is connected to the second sub-plate can be tilted toward the direction of the second air inlet, so that the first sub-plate can also play a certain guiding role for the airflow on the outlet side of the first fan, thereby allowing the airflow on the outlet side of the first fan to flow more smoothly in the direction of the air outlet.

[0011] In some embodiments, the projections of the plurality of first blades on the side wall of the cabinet are located within the projection range of the first air inlet on the cabinet, so as to improve the air supply efficiency of the first fan. Similarly, the projections of the plurality of second blades on the side wall of the cabinet are located within the projection range of the second air inlet on the cabinet, so as to improve the air supply efficiency of the second fan.

[0012] In some embodiments, the first housing includes a first side panel, the first side panel is arranged opposite to the side wall of the cabinet along a first direction, and the first air inlet and the second air inlet can be respectively arranged on the first side panel. The first sub-panel is fixedly connected to the first side panel, and the second sub-panel is spaced from the side wall of the cabinet, so that the gas on the outlet side of the first fan can flow toward the air outlet through the gap between the second sub-panel and the side wall of the cabinet.

[0013] In some embodiments, the first housing includes a second side panel and a third side panel, the second side panel and the third side panel are respectively fixedly connected to two sides of the first side panel that are opposite to each other along the second direction, and the second side panel and the third side panel are respectively fixedly connected to the side wall of the cabinet, wherein the second direction is perpendicular to the first direction. The first sub-panel can contact the second side panel and the third side panel respectively, and the second sub-panel also contacts the second side panel and the third side panel respectively, so as to prevent the airflow on the outlet side of the first fan from entering the space between the guide plate and the first side panel, thereby affecting the airflow direction on the outlet side of the second fan.

[0014] In some embodiments, the first shell includes a top plate and a bottom plate, the top plate and the bottom plate are respectively connected to the two opposite sides of the first side plate along the third direction, and the top plate and the bottom plate are respectively fixedly connected to the side walls of the cabinet, wherein the third direction is perpendicular to the first direction and the second direction. Along the third direction, the bottom plate is located on the side of the air outlet away from the second air inlet, and the angle between the bottom plate and the side wall of the cabinet is an acute angle, and the angle between the bottom plate and the first side plate is an obtuse angle, or it can be understood that the end of the bottom plate fixedly connected to the side wall of the cabinet is inclined toward the direction of the top plate. This design can enable the bottom plate to play a certain role in guiding the gas around the air outlet, so that the airflow can be quickly discharged from the air outlet to the outside of the cabinet.

[0015] In some embodiments, the exhaust device may further include shutters installed at the air outlet, so that the ventilation state of the air duct can be controlled by controlling the opening and closing state of the shutters, so that the exhaust device can achieve the exhaust function when the shutters are open.

[0016] In some embodiments, the exhaust device may further include a wind speed sensor, which is disposed in the air duct and can be used to detect the wind speed in the air duct. The energy storage cabinet can be used to control the opening of the shutters when the detection signal of the wind speed sensor is greater than or equal to the wind speed threshold. When the detection signal of the wind speed sensor is greater than or equal to the wind speed threshold, it indicates that a large amount of gas has been generated inside the cabinet. At this time, by opening the shutters, the energy storage cabinet can be exhausted to the outside through the exhaust device, thereby reducing the risk of dangerous accidents such as explosions due to the accumulation of a large amount of gas inside the energy storage cabinet.

[0017] Furthermore, the energy storage cabinet can also be used to control the shutters to close when the detection signal of the wind speed sensor is less than the wind speed threshold. When the detection signal of the wind speed sensor is less than the wind speed threshold, it indicates that there is not too much gas inside the cabinet. At this time, closing the shutters can effectively prevent impurities or rainwater outside the cabinet from entering the cabinet through the air duct.

[0018] In some embodiments, the energy storage cabinet also includes a power converter, which is housed in the cabinet and electrically connected to the battery pack. The power converter can be used to convert AC power into DC power and then provide it to the battery pack, or to convert DC power from the battery pack into AC power and then output it, thereby enabling the energy storage cabinet to realize energy storage and external power supply functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A side view of an energy storage cabinet provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the structure of an energy storage cabinet provided in an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of the assembly structure of the exhaust device provided in an embodiment of the utility model;

[0022] Figure 4 An exploded schematic diagram of an exhaust device provided in an embodiment of the utility model.

[0023] Reference numerals:

[0024] 100 - cabinet; 110 - first side wall; 111 - air outlet; 200 - battery pack; 210 - battery module; 211 - battery cell; 212 - gas collecting pipe;

[0025] 300-power converter; 400-exhaust device; 410-housing; 411-first side plate; 412-second side plate; 4121-flange; 413-third side plate;

[0026] 414-top plate; 415-bottom plate; 416-air inlet; 416a-first air inlet; 416b-second air inlet; 420-fan; 420a-first fan;

[0027] 421a-first rotation axis; 422a-first blade; 420b-second fan; 421b-second rotation axis; 422b-second blade; 430-air duct;

[0028] 440-rectifier; 450-guide plate; 451-first sub-plate; 452-second sub-plate; 460-louver; 470-wind speed sensor;

[0029] 500 - second shell; 510 - smoke inlet; 600 - flue. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the embodiments of the utility model will be further described in detail in conjunction with the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described herein. The same figure marks in the figures represent the same or similar structures, and thus their repeated descriptions will be omitted. The words expressing position and direction described in the embodiments of the utility model are all explained with the accompanying drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the utility model. The drawings of the embodiments of the utility model are only used to illustrate the relative position relationship and do not represent the true proportion.

[0031] It should be noted that specific details are described in the following description to facilitate understanding of the present invention. However, the embodiments of the present invention can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the embodiments of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Energy storage cabinets are devices that can store electrical energy through a certain medium and release the stored energy to generate electricity when needed. Energy storage cabinets can be used as load balancing devices and backup power sources in various industrial and commercial scenarios to ensure continuous power supply for electrical facilities in these scenarios and ensure the normal operation of electrical facilities.

[0033] Figure 1 A side view of an energy storage cabinet provided by an embodiment of the utility model. Figure 1As shown, in the embodiment of the utility model, the energy storage cabinet may include a cabinet 100, a battery pack 200 and a power converter 300. The battery pack 200 and the power converter 300 are both accommodated in the cabinet 100, and the battery pack 200 and the power converter 300 are electrically connected. The power converter 300 may be used to convert AC power into DC power and then provide it to the battery pack 200, or convert DC power from the battery pack 200 into AC power and then output it. Exemplarily, the power converter 300 may be a power storage converter (PCS).

[0034] In this embodiment, the battery pack 200 may include one or more battery modules 210, and each battery module 210 may be formed by a plurality of battery cells 211 connected in series. At present, the battery cells 211 in the energy storage cabinet usually use lithium-ion batteries. Although lithium-ion batteries have many advantages such as cleanliness, high cycle times and no memory effect, they are also prone to thermal runaway under conditions of thermal abuse, mechanical abuse and electrical abuse. Here, thermal runaway refers to the phenomenon of overheating, fire and explosion caused by a sharp change in the temperature rise rate of the battery due to the chain reaction of heat release from the battery cells. The causes of thermal runaway usually include extrusion, puncture, short circuit, overcharging and overheating, etc.

[0035] Due to the large number of battery cells 211 in the energy storage cabinet, if one of the battery cells 211 experiences thermal runaway, the heat will quickly transfer to the adjacent battery cells 211, inducing thermal runaway of the adjacent battery cells 211. The battery cells 211 will produce a large amount of gas during the thermal runaway process. If a large amount of gas accumulates in the energy storage cabinet, there is a risk of violent explosion of the cabinet when encountering an open flame. In order to avoid the above problems, the energy storage cabinet needs to have a certain rapid smoke and exhaust exhaust capability. Based on this, in the present embodiment, the energy storage cabinet may also include an exhaust device 400, which can quickly discharge the gas in the cabinet body 100 to the outside of the cabinet body 100, thereby improving the safety of the energy storage cabinet.

[0036] In a specific implementation, the exhaust device 400 can be accommodated in the cabinet 100, and the exhaust device 400 can be arranged on one of the side walls of the cabinet 100. For the convenience of description, the side wall of the cabinet 100 is referred to as the first side wall 110 in the following embodiments. The exhaust device 400 may include a first housing 410, a fan 420, and a guide assembly ( Figure 1The fan 420 and the air guide assembly are both installed in the first housing 410. The first housing 410 is a generally long open structure, and the first housing 410 extends along the height direction of the cabinet 100, and the open side of the first housing 410 is fixedly connected to the first side wall 110 of the cabinet 100, so that the first housing 410 and the first side wall 110 can enclose to form an air duct 430, and the air duct 430 can be communicated with the inside of the cabinet 100 and the outside of the cabinet 100 respectively, so that the gas in the cabinet 100 can be discharged to the outside of the cabinet 100 through the air duct 430.

[0037] In addition, the energy storage cabinet may further include a second shell 500, which is located between the battery pack 200 and the first shell 410, and the second shell 500 can be fixed to the outer wall of the first shell 410 on the side facing away from the first side wall 110. Similarly, the second shell 500 is also a roughly long open structure, and the second shell 500 extends along the height direction of the cabinet 100, and the open side of the second shell 500 and the outer wall of the first shell 410 on the side facing away from the first side wall 110 can enclose to form a flue 600, and the flue 600 can be respectively connected to the interior of the cabinet 100 and the above-mentioned air duct 430, so that the air duct 430 can be connected to the interior of the cabinet 100 through the flue 600.

[0038] In some embodiments, the battery module 210 may include a gas collecting duct 212, and the gases generated by each battery cell 211 in the battery module 210 in the thermal runaway state can be discharged into the gas collecting duct 212. The second shell 500 includes a plurality of smoke inlets 510, and each smoke inlet 510 can be connected to the gas collecting duct 212 of one of the battery modules 210. In this way, in the case of thermal runaway of one of the battery modules 210, the gas generated by the battery module 210 can be directly discharged into the flue 600 through the gas collecting duct 212, and further enter the air duct 430 through the flue 600, and finally discharged to the outside of the cabinet 100 by the air duct 430. Since the gas collecting ducts 212 of each battery module 210 are isolated from each other, the influence of the gas generated by the battery module 210 in thermal runaway on other battery modules 210 can be reduced, thereby helping to reduce the risk of thermal runaway spreading inside the cabinet 100.

[0039] Figure 2 A schematic diagram of the assembly structure of the exhaust device 400 provided in an embodiment of the utility model and the first side wall 110 at a viewing angle is shown. Figure 3 The schematic diagram of the assembly structure of the exhaust device 400 provided in the embodiment of the utility model and the first side wall 110 from another perspective, it should be noted that: Figure 2 and Figure 3 Only a partial structure of the first side wall 110 is shown. Figure 2 and Figure 3 As shown, in the embodiment of the utility model, the first shell 410 may include a first side plate 411, a second side plate 412, a third side plate 413, a top plate 414 and a bottom plate 415. The first side plate 411 and the first side wall 110 of the cabinet 100 may be arranged along the first direction x. The outer wall of the first side plate 411 is the outer wall of the first shell 410 on one side away from the first side wall 110. In other words, the second shell may be fixed to the outer wall of the first side plate 411 and enclosed with the outer wall of the first side plate 411 to form a flue. The second side plate 412 and the third side plate 413 are respectively connected to the two sides of the first side plate 411 opposite to each other along the second direction y, and the ends of the second side plate 412 and the third side plate 413 away from the first side plate 411 are respectively fixedly connected to the first side wall 110. The top plate 414 and the bottom plate 415 are respectively connected to the two sides of the first side plate 411 along the third direction z, and the ends of the top plate 414 and the bottom plate 415 away from the first side plate 411 are respectively fixedly connected to the first side wall 110. It can be seen that the second side plate 412, the third side plate 413, the top plate 414, and the bottom plate 415 of the shell 410 are all fixedly connected to the first side wall 110, thereby effectively improving the connection strength between the shell 410 and the first side wall 110. Among them, the first direction x, the second direction y, and the third direction z are arranged at an angle to each other. Exemplarily, the first direction x, the second direction y, and the third direction z are respectively the length direction, the width direction, and the height direction of the energy storage cabinet, and the three directions are perpendicular to each other.

[0040] In some embodiments, the second side plate 412 has a flange 4121 at one end away from the first side plate 411, and the flange 4121 may be provided with one or more bolt holes, and the second side plate 412 may be fixed to the first side wall 110 through the bolt holes and bolts. Similarly, the third side plate 413, the top plate 414, and the bottom plate 415 may also be designed with flanges, and respectively fixed to the first side wall 110 through the bolt holes and bolts of their respective flanges.

[0041] Please continue to refer to Figure 2 and Figure 3 In the embodiment of the utility model, the first shell 410 includes an air inlet 416, and the air inlet 416 can connect the air duct 430 with the inside of the cabinet. The first side wall 110 of the cabinet includes an air outlet 111, and the air outlet 111 is located within the projection range of the first shell 410 on the first side wall, and the air outlet 111 can connect the air duct 430 with the outside of the cabinet. In this way, the inside of the cabinet and the outside of the cabinet can be connected by using the air inlet 416, the air duct 430, and the air outlet 111, so that the gas inside the cabinet can enter the air duct 430 through the air inlet 416, and further be discharged from the air duct 430 to the outside of the cabinet through the air outlet 111.

[0042] In this embodiment, the air inlet 416 can be disposed on the first side plate 411 of the first housing 410, or can be installed on the second side plate 412 or the third side plate 413 of the first housing 410, and the utility model does not limit this. Figure 3 In the illustrated embodiment, the air inlet 416 is disposed on the first side plate 411. Figure 1 As shown, when a flue 600 is also provided in the cabinet 100, the flue 600 is formed by enclosing the second shell 500 and the first side panel 411, and the projection of the second shell 500 on the first side wall 110 can cover the projection of the air inlet 416 on the first side wall 110, and the flue 600 and the air duct 430 are connected through the air inlet 416, and at this time, the air inlet 416 can also be regarded as a smoke exhaust port of the flue 600.

[0043] In addition, the projection of the air inlet 416 on the first side wall 110 and the air outlet 111 may be staggered, or the projection of the air inlet 416 on the first side wall 110 and the air outlet 111 may overlap or partially overlap, and the present invention does not limit this. Figure 3 In the illustrated embodiment, the air inlet 416 is disposed near the top plate 414 at the projection of the first side wall 110, and the air outlet 111 is disposed near the bottom plate 415, or it can be understood that, along the third direction z, the top plate 414 is located on the side of the air inlet 416 away from the air outlet 111, and the bottom plate 415 is located on the side of the air outlet 111 away from the air inlet 416. In one implementation, one end of the bottom plate 415 fixedly connected to the first side wall 110 can be inclined in a direction away from the top plate 414, for example, the angle between the bottom plate 415 and the first side plate 411 can be an obtuse angle, and the angle between the bottom plate 415 and the first side wall 110 can be an acute angle, so that the bottom plate 415 can play a certain role in guiding the gas around the air outlet 111, so that the airflow can be quickly discharged from the air outlet 111 to the outside of the cabinet.

[0044] In the embodiment of the utility model, the number of fans 420 may be one or more, and accordingly, the number of air inlets 416 may also be one or more, and each fan 420 is installed at each air inlet 416 in a one-to-one correspondence. In the case where there are multiple fans 420, the multiple fans 420 may be arranged in sequence along the height direction of the first housing 410. Multiple fans 420 may increase the air intake area of ​​the air duct 430, thereby helping to further increase the exhaust rate of the exhaust device 400.

[0045] Figure 4 This is an exploded schematic diagram of the exhaust device 400 provided in the embodiment of the utility model. Figure 3 and Figure 4As shown, in this embodiment, one or more fans 420 include a first fan 420a, one or more air inlets 416 include a first air inlet 416a, the first fan 420a is installed on the first air inlet 416a, the first fan 420a may include a first rotating shaft 421a and a plurality of first blades 422a installed on the first rotating shaft 421a, and the plurality of first blades 422a may be arranged along the circumference of the first rotating shaft 421a, so that the first rotating shaft 421a can drive the plurality of first blades 422a to rotate when rotating. The air inlet side of the first fan 420a is arranged toward the inside of the cabinet, and the air outlet side of the first fan 420a is arranged toward the inside of the air duct 430, so that when the first fan 420a is running, the gas in the cabinet can be quickly sent into the air duct 430. Exemplarily, the first fan 420a may also include a first base and a first mounting bracket. The first rotating shaft 421a may be rotatably disposed on the first base. The first base is fixedly connected to the first mounting bracket. The first mounting bracket may be fixedly connected to the inner wall of the first air inlet, so that the first fan 420a can be installed on the first air inlet 416a through the first mounting bracket.

[0046] In addition, the projections of the plurality of first blades 422 a on the first side wall 110 are located within the projection range of the first air inlet 416 a on the first side wall 110 , so as to improve the efficiency of the first fan 420 a in supplying air into the air duct 430 .

[0047] The air guide assembly includes a plurality of fairings 440, and the plurality of fairings 440 are fixed to the inner wall of the first housing 410. For example, when the first air inlet 416a is provided on the first side plate 411, the plurality of fairings 440 are fixed to the inner wall of the first side plate 411. The plurality of fairings 440 are arranged in a turbine shape around the circumference of the first air inlet 416a, and the arrangement direction of the plurality of fairings 440 is the same as the rotation direction of the blades of the first fan 420a. For example, in Figure 3 In the illustrated embodiment, the blades of the first fan 420a rotate clockwise, and the plurality of rectifiers 440 are also arranged in a turbine shape in the clockwise direction accordingly. When the first fan 420a is in operation, due to the different airflow directions at various circumferential positions of the first fan 420a, it is easy to generate a gas vortex on the air inlet side of the first fan 420a. By arranging a plurality of rectifiers 440 on the circumferential side of the air inlet side of the first fan 420a, the turbine-shaped structure formed by the plurality of rectifiers 440 can effectively improve the gas flow direction on the air outlet side of the first fan 420a, greatly reduce the gas vortex, and increase the rate at which the gas flows in the air duct 430 toward the air outlet 111, thereby increasing the exhaust rate of the exhaust device 400. In one implementation, each rectifier 440 is roughly parallel to the airflow direction of the circumferential position where it is located, so as to improve the rectifying effect of the airflow on the air inlet side of the first fan 420a.

[0048] For example, the fairing 440 may be made of a rigid material, such as metal or hard plastic, to reduce the risk of deformation of the fairing 440 under the action of airflow. The shape of the fairing 440 includes a flat plate, an arc shape, an airfoil shape, and the like.

[0049] In one embodiment, one or more fans 420 may further include a second fan 420b, and correspondingly, one or more air inlets 416 include a second air inlet 416b, and the second fan 420b is installed at the second air inlet 416b. The projection of the second air inlet 416b on the first side wall 110 is located between the projection of the first air inlet 416a on the first side wall 110 and the air outlet 111, that is, along the third direction z, the second air inlet 416b is located on the side of the first air inlet 416a close to the air outlet 111. The second fan 420b may include a second rotating shaft 421b and a plurality of second blades 422b installed on the second rotating shaft 421b, and the plurality of second blades 422b may be arranged along the circumference of the second rotating shaft 421b, so that when the second rotating shaft 421b rotates, the plurality of second blades 422b can be driven to rotate. The air inlet side of the second fan 420b is arranged toward the inside of the cabinet, and the air outlet side of the second fan 420b is arranged toward the inside of the air duct 430, so that when the second fan 420b is running, the gas in the cabinet can be quickly sent into the air duct 430. Exemplarily, the second fan 420b can also include a second base and a second mounting bracket, the second rotating shaft 421b can be rotatably arranged on the second base, the second base is fixedly connected to the second mounting bracket, and the second mounting bracket can be fixedly connected to the inner wall of the second air inlet, so that the second fan 420b can be installed on the second air inlet 416b through the second mounting bracket.

[0050] Similarly, the projections of the plurality of second blades 422 b on the first side wall 110 are located within the projection range of the second air inlet 416 b on the first side wall 110 , so as to improve the efficiency of the second fan 420 b in supplying air into the air duct 430 .

[0051] The guide assembly includes a guide plate 450, which includes a first sub-plate 451 and a second sub-plate 452 connected to each other. The first sub-plate 451 is located between the first air inlet 416a and the second air inlet 416b along the third direction z, and one end of the first sub-plate 451 is fixedly connected to the inner wall of the first shell 410. For example, when the first air inlet 416a and the second air inlet 416b are arranged on the first side plate 411, one end of the first sub-plate 451 is fixedly connected to the inner wall of the first side plate 411, and the other end of the first sub-plate 451 is fixedly connected to the second sub-plate 452. The projections of the first sub-plate 451 and the second sub-plate 452 on the first side wall 110 can cover the projections of the second air inlet 416b on the first side wall 110. For example, the projection of the first sub-plate 451 on the first side wall 110 does not overlap with the projection of the second air inlet 416b on the first side wall 110, and the projection of the second sub-plate 452 on the first side wall 110 completely covers the projection of the second air inlet 416b on the first side wall 110; or, the projection of the first sub-plate 451 on the first side wall 110 may cover a portion of the projection of the second air inlet 416b on the first side wall 110, and the projection of the second sub-plate 452 on the first side wall 110 may cover another portion of the projection of the second air inlet 416b on the first side wall. Through this design, the guide plate 450 can isolate the airflow on the outlet side of the second fan 420b from the airflow on the outlet side of the first fan 420a, reduce the vortex generated by the interference between the airflow on the outlet side of the second fan 420b and the airflow on the outlet side of the first fan 420a, and make the airflow on the outlet side of the second fan 420b flow toward the air outlet 111 under the guiding action of the guide plate 450, thereby improving the exhaust rate of the exhaust device 400.

[0052] The first sub-plate 451 and the second sub-plate 452 can be integrally bent to simplify the manufacturing process of the guide plate 450. In addition, the first sub-plate 451 can have an edge at one end away from the second sub-plate 452, and the first sub-plate 451 can be fixedly connected to the first side plate 411 through the edge. For example, the first sub-plate 451 can be fixed to the first side plate 411 by welding the edge; or the edge can be provided with bolt holes, and the first sub-plate 451 can be fixed to the first side plate 411 by the bolt holes provided on the edge and the bolts.

[0053] In one implementation, the second sub-plate 452 is spaced from the first side wall 110 so that the gas on the outlet side of the first fan 420a can flow toward the air outlet 111 through the gap between the second sub-plate 452 and the first side wall 110. Exemplarily, the second sub-plate 452 and the first side wall 110 can be substantially parallel. In addition, the first sub-plate 451 is in contact with the second side plate 412 and the third side plate 413 on both sides along the second direction y, and the second sub-plate 452 is in contact with the second side plate 412 and the third side plate 413 on both sides along the second direction y, so that the airflow on the outlet side of the first fan 420a can be prevented from entering the space between the guide plate 450 and the first side plate 411, thereby affecting the airflow direction on the outlet side of the second fan 420b.

[0054] In addition, the angle between the first sub-plate 451 and the second sub-plate 452 can be an obtuse angle, that is, the first sub-plate 451 is inclined toward the direction of the bottom plate 415. The angle between the first sub-plate and the second sub-plate can be between 120° and 150°. For example, the angle can be 120°, 135°, 140°, 150°, and so on. Correspondingly, the angle between the first sub-plate 451 and the first side plate 411 can be between 30° and 60°. For example, the angle can be 30°, 45°, 50°, 60°, and so on. Through this design, the first sub-plate 451 can also play a certain role in guiding the airflow on the outlet side of the first fan 420a, so that the airflow on the outlet side of the first fan 420a can flow more smoothly to the gap between the second sub-plate 452 and the first side wall 110.

[0055] Please continue to refer to Figure 3 and Figure 4 In an embodiment of the utility model, the exhaust device 400 also includes a shutter 460, which is installed at the air outlet 111. In this way, the ventilation state of the air duct 430 can be controlled by controlling the opening and closing state of the shutter 460, so that the exhaust device 400 can realize the exhaust function when the shutter 460 is open.

[0056] In some embodiments, the exhaust device 400 further includes a wind speed sensor 470, which is disposed in the air duct 430 to detect the wind speed in the air duct 430. The energy storage cabinet can be used to control the shutter 460 to open when the detection signal of the wind speed sensor 470 is greater than or equal to the wind speed threshold. Exemplarily, the wind speed threshold may be 0.1 m / s. When the detection signal of the wind speed sensor 470 is greater than or equal to the wind speed threshold, it indicates that the gas flow in the air duct 430 is relatively large, further indicating that a large amount of gas has been generated inside the cabinet. At this time, by opening the shutter 460, the energy storage cabinet can be exhausted to the outside through the exhaust device 400, thereby reducing the risk of dangerous accidents such as explosions due to the large amount of gas accumulated inside the energy storage cabinet.

[0057] In addition, the energy storage cabinet can also be used to control the shutter 460 to close when the detection signal of the wind speed sensor 470 is less than the wind speed threshold. When the detection signal of the wind speed sensor 470 is less than the wind speed threshold, it indicates that the gas flow in the air duct 430 is relatively small, which further indicates that there is not too much gas inside the cabinet. At this time, closing the shutter 460 can effectively prevent impurities or rainwater outside the cabinet from entering the cabinet through the air duct 430, which will have an adverse effect on the battery pack or power converter inside the cabinet.

[0058] In one implementation, the energy storage cabinet includes a control circuit, which is electrically connected to the wind speed sensor 470 and the shutter 460 respectively. The energy storage cabinet can specifically obtain the detection signal of the wind speed sensor 470 through the control circuit and realize the control of the shutter 460.

[0059] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An energy storage cabinet, characterized in that: It includes a cabinet, a battery pack and an exhaust device, wherein the cabinet is used to accommodate the battery pack and the exhaust device, and the exhaust device includes a first shell, a first fan and a plurality of rectifiers, wherein: The first shell and the side wall of the cabinet are combined to form an air duct, the first shell includes a first air inlet, the first air inlet connects the air duct with the inside of the cabinet; the side wall of the cabinet includes an air outlet, the air outlet connects the air duct with the outside of the cabinet; The first fan is installed at the first air inlet, and the first fan includes a plurality of first blades; The plurality of straightening plates are fixed to the inner wall of the first shell, and the plurality of straightening plates are arranged in a turbine shape around the circumference of the first air inlet, and the arrangement direction of the plurality of straightening plates is the same as the rotation direction of the first blades.

2. The energy storage cabinet according to claim 1, characterized in that: The energy storage cabinet further includes a second shell, the second shell is located between the first shell and the battery pack, the first shell includes a first side plate, the first side plate is arranged opposite to the side wall of the cabinet along a first direction, and the second shell and the first side plate are enclosed to form a flue; The projection of the second shell on the side wall of the cabinet covers the projection of the first air inlet on the side wall of the cabinet, the second shell includes a smoke inlet, the smoke inlet connects the flue with the interior of the cabinet, and the first air inlet is a smoke exhaust port of the flue.

3. The energy storage cabinet according to claim 1, characterized in that: The exhaust device comprises a second fan and a guide plate; the first housing comprises a second air inlet, the projection of the second air inlet on the side wall of the cabinet is located between the projection of the first air inlet on the side wall of the cabinet and the air outlet, the second fan is installed at the second air inlet, and the second fan comprises a plurality of second blades; The guide plate includes a first sub-plate and a second sub-plate, the first sub-plate is located between the first air inlet and the second air inlet, one end of the first sub-plate is connected to the inner wall of the first shell, and the other end of the first sub-plate is connected to the second sub-plate, and the projections of the first sub-plate and the second sub-plate on the side wall of the cabinet cover the projection of the second air inlet on the side wall of the cabinet.

4. The energy storage cabinet according to claim 3, characterized in that: The included angle between the first sub-board and the second sub-board is an obtuse angle.

5. The energy storage cabinet according to claim 3, characterized in that: The projections of the first blades on the side wall of the cabinet are within the projection range of the first air inlet on the side wall of the cabinet, and / or the projections of the second blades on the side wall of the cabinet are within the projection range of the second air inlet on the side wall of the cabinet.

6. The energy storage cabinet according to claim 3, characterized in that: The first shell includes a first side plate, the first side plate is arranged opposite to the side wall of the cabinet along a first direction, and the first air inlet and the second air inlet are respectively arranged on the first side plate; The first sub-board is fixedly connected to the first side board, and the second sub-board is spaced apart from the side wall of the cabinet.

7. The energy storage cabinet according to claim 6, characterized in that: The first shell includes a second side plate and a third side plate, the second side plate and the third side plate are respectively connected to two opposite sides of the first side plate along the second direction, and the second side plate and the third side plate are respectively fixedly connected to the side wall of the cabinet; The first sub-plate is in contact with the second side plate and the third side plate respectively, and the second sub-plate is in contact with the second side plate and the third side plate respectively; The second direction is perpendicular to the first direction.

8. The energy storage cabinet according to claim 7, characterized in that: The first shell includes a top plate and a bottom plate, the top plate and the bottom plate are respectively connected to two opposite sides of the first side plate along the third direction, and the top plate and the bottom plate are respectively fixedly connected to the side walls of the cabinet; Along the third direction, the bottom plate is located on a side of the air outlet away from the second air inlet, the angle between the bottom plate and the side wall of the cabinet is an acute angle, and the angle between the bottom plate and the first side plate is an obtuse angle; Wherein, the third direction is perpendicular to the first direction and the second direction respectively.

9. The energy storage cabinet according to claim 1, characterized in that: The exhaust device comprises a shutter, and the shutter is installed at the air outlet.

10. The energy storage cabinet according to claim 9, characterized in that: The exhaust device includes a wind speed sensor, which is arranged in the energy storage cabinet and is used to control the shutter to open when the detection signal of the wind speed sensor is greater than or equal to the wind speed threshold.

11. The energy storage cabinet according to claim 10, characterized in that: The energy storage cabinet is used to control the shutter to close when the detection signal of the wind speed sensor is less than the wind speed threshold.

12. The energy storage cabinet according to any one of claims 1 to 11, characterized in that: The energy storage cabinet includes a power converter, which is accommodated in the cabinet and electrically connected to the battery pack. The power converter is used to convert AC power into DC power and then provide it to the battery pack, or to convert DC power from the battery pack into AC power.

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