Energy storage converter

Abstract

The invention discloses an energy storage converter, which comprises a case, an electrical assembly and a refrigeration assembly, and is characterized in that a closed inner cavity is formed in the case; the electrical assembly is arranged in the inner cavity; the refrigeration assembly is arranged in the inner cavity and comprises a first air supply device and a heat exchange device, the heat exchange device is provided with an air inlet and an air outlet, the air inlet faces the first direction, the air outlet faces the second direction, an included angle is formed between the first direction and the second direction, and at least part of the electrical assembly is located on the side, in the second direction, of the air outlet; at least one of the air inlet and the air outlet is provided with a first air supply device, and the first air supply device is used for forming negative pressure, so that airflow enters the heat exchange device from the air inlet to be subjected to heat exchange and then is output from the air outlet. According to the embodiment of the invention, the electrical components in the case are cooled through the air supply device arranged in the case, so that the airflow forms circulation in the case and exchanges heat with the electrical components, and the problem of overheating of the electrical components is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power conversion, in particular to a kind of energy storage converter. BACKGROUND

[0002] Energy storage converter is a kind of equipment for power system, its main function is to convert DC power into AC power, and can be converted into DC power when needed AC power storage. Energy storage converter has important application in renewable energy and power storage system, can realize the balance and optimization of energy. Since the electrical components inside the energy storage converter generate heat during operation, overheat problems of electrical components in the cabinet are prone to occur during long-term operation. SUMMARY

[0003] The present application provides an energy storage converter, to improve the problem of overheat of electrical components in the energy storage converter.

[0004] To achieve the above technical effects, one technical scheme adopted by the present application is to provide an energy storage converter, comprising:

[0005] Cabinet, a closed inner cavity is formed in the cabinet;

[0006] Electrical components are arranged in the inner cavity; and

[0007] Refrigeration components are arranged in the inner cavity, the refrigeration components include a first air supply device and a heat exchange device, the heat exchange device has an air inlet and an air outlet, the air inlet is arranged towards a first direction, the air outlet is arranged towards a second direction, the first direction and the second direction are arranged at an angle, and the electrical components are at least partially located on one side of the air outlet along the second direction; wherein at least one of the air inlet and the air outlet is provided with the first air supply device, and the first air supply device is used to form negative pressure, so that air flow enters the heat exchange device from the air inlet and is output from the air outlet after heat exchange.

[0008] Wherein, the cabinet has a first wall and a second wall arranged oppositely along the first direction, and the electrical components are arranged between the first wall and the second wall;

[0009] Wherein, the air inlet is arranged closer to the first wall relative to the second wall, and / or the air outlet is arranged closer to the second wall relative to the first wall.

[0010] Wherein, the cabinet further has a first end cover and a second end cover arranged oppositely, and a third wall and a fourth wall arranged between the first end cover and the second end cover, the third wall and the fourth wall are arranged oppositely along the second direction, the first wall and the second wall are arranged between the first end cover and the second end cover, and the first wall, the second wall, the third wall, the fourth wall, the first end cover and the second end cover form a closed inner cavity.

[0011] The heat exchange device is arranged close to the third wall, and the air outlet is arranged towards the fourth wall.

[0012] The first end cover and the second end cover are respectively provided with a sealing assembly at the connection position of the first wall, the second wall, the third wall and the fourth wall.

[0013] The heat exchange device comprises:

[0014] The refrigeration plate is connected to the case; and

[0015] The heat exchanger is connected to the refrigeration plate, and the heat exchanger is provided with a heat exchange channel, an air duct inlet and an air duct outlet communicating with the heat exchange channel. The air duct inlet communicates with the air inlet, and the air duct outlet communicates with the air outlet.

[0016] At least one of the air duct inlet and the air duct outlet communicates with the first air supply device, and the first air supply device is used to form a negative pressure to make the airflow output from the air inlet to the air outlet.

[0017] The heat exchanger is arranged between the first end cover and the refrigeration plate; and the electrical assembly is at least partially located between the refrigeration plate and the second end cover.

[0018] The electrical assembly comprises a first electrical assembly and a second electrical assembly, the first electrical assembly is arranged between the heat exchange device and the second electrical assembly, and the heat generation power of the first electrical assembly is greater than the heat generation power of the second electrical assembly.

[0019] The first electrical assembly comprises an inverter inductor and an IGBT board, and at least one of the inverter inductor and the IGBT board is arranged in contact with the refrigeration plate.

[0020] The heat exchanger is arranged between the first end cover and the refrigeration plate; the heat exchange device is arranged closer to the first end cover relative to the second end cover; the first end cover is in the third direction towards the second end cover; the first electrical assembly and the second electrical assembly are arranged along the third direction, and the third direction is arranged at an angle with respect to the first direction and the second direction.

[0021] The energy storage converter further comprises:

[0022] A partition plate is arranged between the first electrical assembly and the second electrical assembly, and a gap is formed between the partition plate and the inner wall surface of the case.

[0023] The electrical assembly further comprises a third electrical assembly, the third electrical assembly is arranged between the second electrical assembly and the second end cover, the heat generation power of the third electrical assembly is less than the heat generation power of the second electrical assembly, and a partition plate is arranged between the third electrical assembly and the second electrical assembly.

[0024] The energy storage converter further comprises:

[0025] A second air supply device is arranged in the inner cavity, and the second air supply device is arranged closer to the air inlet than the air outlet. The second air supply device is used to draw and supply the air flow at the electrical components to the direction of the air inlet.

[0026] The height of the second air supply device in the third direction is not less than the height of the partition plate between the first electrical component and the second electrical component.

[0027] In the examples of the present application, the heat exchange device arranged in the cabinet is used to cool the electrical components in the cabinet. The air inlet of the heat exchange device is arranged in the first direction, the air outlet is arranged in the second direction, and the electrical components are at least partially located between the air inlet and the air outlet. The air flow is circulated in the cabinet, and at least part of the air flow can flow through the electrical components to exchange heat with the electrical components, so as to reduce the problem of overheating of the electrical components. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some examples of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 is a structural schematic diagram of an example of the energy storage converter of the present application;

[0030] Figure 2 is a structural schematic diagram of another example of the energy storage converter of the present application;

[0031] Figure 3 is a structural schematic diagram of an example of the installation position of the refrigeration assembly of the present application; wherein the arrow direction shown in the figure is the air flow circulation direction;

[0032] Figure 4 is a structural schematic diagram of an example of the refrigeration assembly of the present application;

[0033] Figure 5 is a structural schematic diagram of an example of the arrangement of the electrical components in the cabinet of the present application;

[0034] Figure 6 is a structural schematic diagram of another example of the arrangement of the electrical components in the cabinet of the present application;

[0035] Figure 7 is a structural schematic diagram of still another example of the arrangement of the electrical components in the cabinet of the present application.

[0036] Wherein: 10, cabinet; 11, first wall; 12, second wall; 13, third wall; 14, fourth wall; 15, first end cover; 16, second end cover; 17, inner cavity;

[0037] 20. Refrigeration assembly; 21. Refrigeration plate; 22. Heat exchanger; 221. Heat exchange channel; 222. Air duct inlet; 223. Air duct outlet; 23. First air supply device; 24. Wind shield; 25. Air inlet; 26. Air outlet; 27. Heat exchange device;

[0038] 30. Electrical components; 31. First electrical group; 311. Inverter inductor; 312. IGBT board; 313. DC input busbar; 314. Fuse; 315. Magnetic ring; 316. Contactor; 317. Capacitor board; 318. Relay; 319. Common-mode inductor; 3110. Differential-mode inductor; 3111. Transformer; 32. Second electrical group; 321. Power board; 322. AC / DC busbar; 323. AC output busbar; 324. AC output board; 33. Third electrical group; 331. Monitoring board; 332. Battery Management Unit (BMU);

[0039] 40. Second air supply device;

[0040] 50. Sealing assembly;

[0041] 60. Partition;

[0042] 3a, first direction, 3b, second direction;

[0043] 6a. Third direction. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" in this application should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0046] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0047] Energy storage converters are core devices that enable bidirectional electrical energy flow. They are primarily used to control the battery's charge and discharge processes and perform AC / DC conversion. Their operating principle is based on power electronics technology, controlling the on / off switching of switching devices to achieve energy conversion and bidirectional flow. Because energy storage projects are typically large-scale, have high energy density, and generate significant heat, some technologies incorporate fans within the converter to dissipate heat and reduce internal temperatures. However, due to the sealing requirements of energy storage converters, existing heat dissipation methods may hinder their practical use.

[0048] Referring to Figures 1 to 7 The present application provides an example of an energy storage converter, which comprises a cabinet 10, an electrical component 30 and a refrigeration component 20. The cabinet 10 forms a closed inner cavity 17. The electrical component 30 is arranged in the inner cavity 17. The refrigeration component 20 is arranged in the inner cavity 17. The refrigeration component 20 comprises a first air supply device 23 and a heat exchange device 27. The heat exchange device 27 has an air inlet 25 and an air outlet 26. The air inlet 25 is arranged towards a first direction 3a. The air outlet 26 is arranged towards a second direction 3b. The first direction 3a and the second direction 3b are arranged at an angle. The electrical component 30 is at least partially located on one side of the air outlet 26 along the second direction 3b. At least one of the air inlet 25 and the air outlet 26 is provided with the first air supply device 23. The first air supply device 23 is used to form a negative pressure, so that the airflow enters the heat exchange device 27 from the air inlet 25 and is output from the air outlet 26 after heat exchange.

[0049] The cabinet 10 is used to form a closed space to accommodate the electrical component 30. The cabinet 10 can be a cuboid or other shape. The cabinet 10 forms an inner cavity 17 inside. The cabinet 10 can form a single inner cavity 17 or have multiple chambers. The inner cavity 17 is used to accommodate the electrical component 30 and the refrigeration component 20. The cabinet 10 is in a closed state to reduce the possibility of moisture entering the inner cavity 17 from the outside of the cabinet 10. In some examples, the edge part of each wall surface of the cabinet 10 is provided with a sealing component 50. The sealing component 50 is used to seal the connection between the two adjacent wall surfaces to improve the sealing performance of the cabinet 10. In some examples, the cabinet 10 has a first wall 11 and a second wall 12 arranged opposite to each other. The first wall 11 and the second wall 12 are provided with a third wall 13 and a fourth wall 14. The upper and lower wall surfaces of the cabinet 10 are a first end cover 15 and a second end cover 16. The first wall 11, the second wall 12, the third wall 13, the fourth wall 14, the first end cover 15 and the second end cover 16 form a closed inner cavity 17.

[0050] Referring to Figure 5 , Figure 6 and Figure 7The electrical assembly 30 is arranged in the inner cavity 17, and the electrical assembly 30 is each functional module of the energy storage converter. In some examples, the electrical assembly 30 is divided into multiple groups. In the examples of the present application, the electrical assembly 30 can be installed in groups according to factors such as the functions of the electrical assembly 30 and the heat generation. Optionally, the electrical assembly 30 includes a first electrical group 31, which can include an inverter inductor 311, an IGBT board 312, a direct current input copper bar 313, a fuse 314, a magnetic ring 315, a contactor 316, a capacitor board 317, a relay 318, a common mode inductor 319, a differential mode inductor 3110, and a transformer 3111, etc. The electrical assembly 30 can also include a second electrical group 32, which includes a power supply board 321, an AC / DC adapter copper bar 322, an AC output copper bar 323, and an AC output board 324. The electrical assembly 30 can also include a third electrical group 33, which can include a monitoring board 331, a BMU battery management module 332, etc.

[0051] The refrigeration assembly 20 is arranged in the inner cavity 17 and is used to form cold energy. The refrigeration assembly 20 can exchange heat with the air in the inner cavity 17 to cool the air in the inner cavity 17, thereby indirectly exchanging heat with the electrical assembly 30. Optionally, the refrigeration assembly 20 can also directly adhere to part of the electrical assembly 30 to directly exchange heat with the electrical assembly 30.

[0052] The refrigeration assembly 20 includes a heat exchange device 27 having an air inlet 25 and an air outlet 26 arranged in a spaced manner. The air inlet 25 and the air outlet 26 are arranged in a spaced manner, i.e., the air inlet 25 and the air outlet 26 do not overlap, so that the airflow can enter the heat exchange device 27 from the air inlet 25 and be output to the heat exchange device 27 from the air outlet 26. The airflow can exchange heat with the heat exchange device 27 in the heat exchange device 27 to cool the airflow.

[0053] The refrigeration assembly 20 includes a first air supply device 23 for forming negative pressure to accelerate the airflow to flow from the air inlet 25 to the air outlet 26. In the examples of the present application, the first air supply device 23 can be arranged in at least one of the air inlet 25 and the air outlet 26 to accelerate the airflow.

[0054] The air inlet 25 is arranged towards the first direction 3a, i.e., the plane where the air inlet 25 is arranged is towards the first direction 3a, which is defined as Figure 3The third direction 3a is a first direction 3a. The plane of the air inlet 25 can be perpendicular to the first direction 3a or be inclined at an angle to the first direction 3a, so that the airflow can enter the air inlet 25. It can be understood that the air inlet 25 is not directly attached to the inner wall of the cabinet 10, so that the airflow can enter the air inlet 25. Optionally, the heat exchange device 27 can be arranged close to one of the side walls of the cabinet 10. For example, the cabinet 10 can include six walls as in any of the examples described above. The heat exchange device 27 can be arranged close to the third wall 13 of the cabinet 10. The air outlet 26 can be arranged towards the fourth wall 14. The air inlet 25 can be arranged towards the first wall 11.

[0055] The air outlet 26 is arranged towards the second direction 3b, which means that the plane of the air outlet 26 is arranged towards the second direction 3b, as defined above. Figure 3 The third direction 3b is a second direction 3b. The plane of the air outlet 26 can be perpendicular to the second direction 3b or be inclined at an angle to the second direction 3b, so that the airflow can be output from the air outlet 26. The first direction 3a and the second direction 3b are arranged at an angle, which means that the first direction 3a is not parallel to the second direction 3b. After the airflow is output from the air outlet 26, the airflow is not directly transported towards the air inlet 25. In some examples, the first direction 3a is perpendicular to the second direction 3b. In some examples, the first direction 3a is the width direction of the cabinet 10, and the second direction 3b is the height direction or the length direction of the cabinet 10.

[0056] The electrical components 30 are at least partially located on one side of the air outlet 26 along the second direction 3b, which means that the electrical components 30 at least partially block the outside of the air outlet 26, so that the airflow output from the air outlet 26 is not directly transported towards the air inlet 25. The airflow output from the air outlet 26 can also act on the electrical components 30 to exchange heat with the electrical components 30. After heat exchange, the airflow can flow towards the air inlet 25, so that the airflow reenters the heat exchange device 27 for heat exchange. In the present example, the electrical components 30 can directly block one side of the air outlet 26 along the second direction 3b. Alternatively, the electrical components 30 can be staggered with the air outlet 26, that is, the electrical components 30 do not directly block the air outlet 26, so that the airflow output from the air outlet 26 can flow along the gaps between the electrical components 30 or between the electrical components 30 and the inner wall of the cabinet 10, thereby prolonging the residence time of the cold airflow in the cabinet 10 and further prolonging the heat exchange time of the cold airflow.

[0057] In the example, the electrical component 30 is enclosed in the cabinet 10 by forming the enclosed inner cavity 17 in the cabinet 10, so as to improve the waterproof and dustproof performance of the electrical component 30. The heat exchange device 27 is used to exchange heat with the airflow in the inner cavity 17, so as to accelerate the airflow in the enclosed space of the inner cavity 17, and exchange heat between the airflow and the electrical component 30, so as to reduce the temperature of the electrical component 30. In the example, the inlet 25 and the outlet 26 of the heat exchange device 27 are oriented differently, so as to prolong the residence time of the airflow output by the outlet 26 at the electrical component 30, so that the airflow can exchange heat with the electrical component 30 more times. In the example, the electrical component 30 is enclosed in the inner cavity 17, and the air circulation is only performed by the heat exchange device 27 in the inner cavity 17. Since no air outside the cabinet 10 is introduced to participate in heat exchange, the influence of the moisture outside the cabinet 10 on the electrical component 30 can be reduced, and the sealing performance and waterproof performance of the energy storage converter can be improved.

[0058] In some examples, the cabinet 10 has a first wall 11 and a second wall 12 oppositely arranged along the first direction 3a, and the electrical component 30 is arranged between the first wall 11 and the second wall 12. The inlet 25 is arranged closer to the first wall 11 relative to the second wall 12. The first wall 11 and the second wall 12 can be two oppositely arranged side walls of the cabinet 10. The first wall 11 and the second wall 12 can be arranged in parallel, or the first wall 11 can be arranged non-parallel to the second wall 12. The electrical component 30 is arranged between the first wall 11 and the second wall 12. The inlet 25 is arranged close to the first wall 11, which means that when the heat exchange device 27 is installed, the inlet 25 can be arranged adjacent to the first wall 11, and there is a gap between the inlet 25 and the first wall 11, so that the airflow can enter the heat exchange device 27 through the gap between the first wall 11 and the inlet 25. In the example, the inlet 25 is arranged close to the first wall 11, so that the airflow output by the outlet 26 can stay in the inner cavity 17 for a longer time, thereby prolonging the heat exchange time between the low-temperature airflow and the electrical component 30, and improving the utilization efficiency of the low-temperature airflow. Since the inlet 25 is arranged close to the first wall 11, and the electrical component 30 is located between the first wall 11 and the second wall 12, the airflow can flow along the gap between the electrical component 30 and the first wall 11 to the inlet 25, so as to prolong the heat exchange time between the low-temperature airflow and the electrical component 30.

[0059] In some examples, the cabinet 10 has a first wall 11 and a second wall 12 oppositely arranged along the first direction 3a, and the electrical components 30 are arranged between the first wall 11 and the second wall 12. The air outlet 26 is arranged close to the second wall 12. In the present example, the air outlet 26 is arranged closer to the second wall 12 than to the first wall 11, so that the airflow input into the heat exchange device 27 from the air inlet 25 can have a longer heat exchange time. Since the first wall 11 and the second wall 12 are oppositely arranged, when the low-temperature airflow is output from the air outlet 26, the low-temperature airflow is relatively farther away from the air inlet 25, thereby prolonging the residence time of the low-temperature airflow in the inner cavity 17 and improving the utilization rate of the low-temperature airflow. In the present example, the first wall 11 to the second wall 12 can be in the first direction 3a, and the air outlet 26 is not directly opposite to the first wall 11 or the second wall 12. Alternatively, the air outlet 26 can be directed towards at least one of the fourth wall 14, the first end cover 15, or the second end cover 16 of the cabinet 10. In the present example, the electrical components 30 are arranged between the first wall 11 and the second wall 12, and the air outlet 26 can be directed towards the gap between the electrical components 30 and the second wall 12, so that the low-temperature airflow output from the air outlet 26 can flow along the second wall 12. When the airflow flows through the electrical components 30, the conveying distance of the airflow along the second direction 3b can be prolonged, thereby prolonging the heat exchange time between the airflow and the electrical components 30.

[0060] In the present example, the distance between the air inlet 25 and the first wall 11 and the distance between the air outlet 26 and the second wall 12 can be selected according to the volume of the cabinet 10 and the number and type of the electrical components 30. In order to reduce the space occupied by the refrigeration assembly 20, the air inlet 25 and the first wall 11 can have a gap for airflow to flow while the distance between the air inlet 25 and the first wall 11 is as small as possible. The air outlet 26 can output airflow while the distance between the air outlet 26 and the second wall 12 is as small as possible.

[0061] In some examples, the cabinet 10 further has a first end cover 15 and a second end cover 16 oppositely arranged, and a third wall 13 and a fourth wall 14 arranged between the first end cover 15 and the second end cover 16. The third wall 13 and the fourth wall 14 are oppositely arranged along the second direction 3b. The first wall 11 and the second wall 12 are arranged between the first end cover 15 and the second end cover 16. The first wall 11, the second wall 12, the third wall 13, the fourth wall 14, the first end cover 15, and the second end cover 16 enclose to form a closed inner cavity 17. In the present example, the first wall 11, the second wall 12, the third wall 13, the fourth wall 14, the first end cover 15, and the second end cover 16 enclose to form a hexahedral structure, which can facilitate the placement of the electrical components 30 in the cabinet 10. In some examples, the first wall 11, the second wall 12, the third wall 13, the fourth wall 14, the first end cover 15, and the second end cover 16 can enclose to form a cuboid structure.

[0062] In some examples, the heat exchange device 27 is arranged close to the third wall 13, and the air outlet 26 is arranged towards the fourth wall 14.

[0063] In the present example, the first wall 11 and the second wall 12 are the left and right side walls of the cabinet 10, and the third wall 13 and the fourth wall 14 can be the front and back side walls of the cabinet 10. The heat exchange device 27 is arranged close to the third wall 13, so that the heat exchange device 27 is close to the edge of the cabinet 10, reducing the interference of the heat exchange device 27 with the electrical components 30; the air outlet 26 of the heat exchange device 27 is arranged towards the fourth wall 14, so that the airflow output by the air outlet 26 flows towards the fourth wall 14. Optionally, there is a gap between the electrical components 30 and the second wall 12, and the airflow output by the air outlet 26 can flow towards the fourth wall 14 along the gap between the electrical components 30 and the second wall 12, so as to prolong the flow time of the low-temperature airflow in the inner cavity 17, so that the low-temperature airflow can more fully exchange heat with the electrical components 30.

[0064] In some examples, the first end cover 15 and the second end cover 16 are provided with sealing components 50 at the connection with the first wall 11, the second wall 12, the third wall 13, and the fourth wall 14. The sealing components 50 can be sealing glue, sealing strips, or other materials capable of sealing. The sealing components 50 are used to seal the gap at the connection between adjacent wall surfaces, so that the cabinet 10 has a better sealing state, reducing the influence of external moisture on the electrical components 30. In some examples, the sealing components 50 close to the first end surface are connected to each other, and the sealing components 50 close to the second end surface are connected to each other, so that the sealing components 50 form two annular structures, simplifying the installation of the sealing components 50. In some examples, grooves for clamping the sealing components 50 are provided on the cabinet 10, and the sealing components 50 are clamped at the predetermined positions on the cabinet 10. In some examples, the sealing components 50 are bonded at the predetermined positions on the cabinet 10.

[0065] In some examples, the heat exchange device 27 includes a refrigeration plate 312 connected to the cabinet 10, and a heat exchanger 22 connected to the refrigeration plate 312. The heat exchanger 22 is provided with a heat exchange channel 221, and an air duct inlet 222 and an air duct outlet 223 communicating with the heat exchange channel 221. The air duct inlet 222 communicates with the air inlet 25, and the air duct outlet 223 communicates with the air outlet 26. At least one of the air duct inlet 222 and the air duct outlet 223 communicates with the first air supply device 23, and the first air supply device 23 is used to form a negative pressure, so that the airflow is output from the air inlet 25 to the air outlet 26.

[0066] The refrigeration plate 312 is used for refrigeration. In some examples, the refrigeration plate 312 can be a liquid cooling plate 312, which can contain micro-channels or curved channels therein, and the liquid cooling can be achieved by circulating flow of cooling liquid in the channels. The cooling liquid can be water glycol, silicon oil or other materials.

[0067] The heat exchanger 22 is connected to the refrigeration plate 312 for heat exchange with the refrigeration plate 312. In the examples of the present application, the heat exchanger 22 can be heat exchange fins or other structures capable of heat exchange. The heat exchanger 22 can be integrally provided with the refrigeration plate 312, or the heat exchanger 22 can be separately provided with the refrigeration plate 312 and connected to each other. For the convenience of description, the heat exchanger 22 is taken as multiple fins arranged at intervals in the following description. The heat exchanger 22 is provided with a heat exchange channel 221, which can be used for air flow. The heat exchanger 22 is provided with an air duct inlet 222 and an air duct outlet 223 communicating with the heat exchange channel 221. The air duct inlet 222 communicates with the air inlet 25, and the air duct outlet 223 communicates with the air outlet 26. At least one of the air duct inlet 222 and the air duct outlet 223 is provided with a first air supply device 23, so that the first air supply device 23 can form a negative pressure to suck and supply the air in the inner cavity 17 into the heat exchange channel 221 of the heat exchanger 22. After the air exchanges heat with the heat exchanger 22, the air is output by the air outlet 26.

[0068] In some examples, the first air supply device 23 can be a vortex fan. The first air supply device 23 can be arranged at the air duct outlet 223 of the heat exchanger 22. The inlet of the first air supply device 23 communicates with the air duct outlet 223, and the outlet of the first air supply device 23 forms the air outlet 26.

[0069] In some examples, the heat exchanger 22 is arranged between the first end cover 15 and the refrigeration plate 312, and the electrical components 30 are at least partially located between the refrigeration plate 312 and the second end cover 16.

[0070] The heat exchanger 22 is arranged between the first end cover 15 and the refrigeration plate 312 in this example, so that the refrigeration plate 312 and the first end cover 15 limit the heat exchanger 22. In this example, the heat exchanger 22 can be limited by the side surface of the refrigeration plate 312 facing the second end cover 16 and the first end cover 15, so that the heat exchange channel 221 is formed between the refrigeration plate 312, the second end cover 16 and the adjacent fins. In some examples, the baffle plate 24 is arranged on the second end cover 16, the first air supply device 23 is arranged on the baffle plate 24, the baffle plate 24 forms a cavity, and at least two through holes are formed on the baffle plate 24, one of which communicates with the air outlet 223, and the other communicates with the inlet of the first air supply device 23. In this example, the baffle plate 24 is used to support the first air supply device 23, so as to increase the distance between the first air supply device 23 and the second end cover 16, so as to improve the air outlet position of the first air supply device 23. On the one hand, the low-temperature airflow output by the first air supply device 23 can more easily act on the electrical components 30. On the other hand, the angle of the air outlet 26 can be adjusted according to the distribution position of the electrical components 30 with different heat generating powers, so that the air outlet position of the air outlet 26 is more targeted.

[0071] In some examples, the electrical components 30 include a first electrical group 31 and a second electrical group 32, the first electrical group 31 is arranged between the heat exchange device 27 and the second electrical group 32, and the heat generating power of the first electrical group 31 is greater than that of the second electrical group 32.

[0072] The first electrical group 31 can include a plurality of electrical modules, and the first electrical group 31 can be electrically connected with the second electrical group 32. Optionally, the first electrical group 31 can include an inverter inductance 311, an IGBT board 312, a direct current input copper bar 313, a fuse 314, a magnetic ring 315, a contactor 316, a capacitor board 317, a relay 318, a common mode inductance 319, a differential mode inductance 3110 and a transformer 3111. The second electrical group 32 includes a power supply board 321, an AC / DC adapter copper bar 322, an AC output copper bar 323 and an AC output board 324. The first electrical group 31 is arranged between the heat exchange device 27 and the second electrical group 32, so that the first electrical group 31 is closer to the heat exchange device 27, the heat generating power of the first electrical group 31 is greater than that of the second electrical group 32, and the first electrical group 31 can exchange heat with the heat exchange device 27 more quickly. In this example, the electrical components 30 can be installed in layers according to the heat generating power of the electrical components 30, so that the electrical components 30 with higher heat generating power are installed closer to the heat exchange device 27, thereby accelerating the heat exchange of the electrical components 30 with higher heat generating power and reducing the possibility of overheating inside the cabinet 10.

[0073] In some examples, the first electrical group 31 includes an inverter inductor 311 and an IGBT board 312, and at least one of the inverter inductor 311 and the IGBT board 312 is attached to the cooling plate 312 so that the at least one of the inverter inductor 311 and the IGBT board 312 directly exchanges heat with the cooling plate 312 to accelerate heat dissipation of the inverter inductor 311 and the IGBT board 312. In the present example, since the inverter inductor 311 and the IGBT board 312 have high heat generation power, by directly contacting the inverter inductor 311 and the IGBT board 312 with the cooling plate 312, the cooling speed of the cooling plate 312 on the inverter inductor 311 and the IGBT board 312 can be improved, effectively reducing the problem of overheating of the inverter inductor 311 and the IGBT board 312.

[0074] In some examples, the heat exchanger 22 is arranged between the first end cover 15 and the cooling plate 312, the heat exchange device 27 is arranged closer to the first end cover 15 than to the second end cover 16, the first end cover 15 is in a third direction 6a toward the second end cover 16, and the first electrical group 31 and the second electrical group 32 are arranged along the third direction 6a, and the third direction 6a is arranged at an angle with respect to the first direction 3a and the second direction 3b.

[0075] The third direction 6a is arranged at an angle with respect to the first direction 3a and the second direction 3b, which means that the third direction 6a is not parallel to the first direction 3a or the second direction 3b. In the present example, the third direction 6a can be the height direction of the cabinet 10, the first direction 3a can be the length direction of the cabinet 10, and the second direction 3b can be the width direction of the cabinet 10.

[0076] The heat exchange device 27 is arranged closer to the first end cover 15 than to the second end cover 16, which means that the distance between the heat exchange device 27 and the first end cover 15 is less than the distance between the heat exchange device 27 and the second end cover 16. The first electrical group 31 and the second electrical group 32 are arranged along the third direction 6a, and the first electrical group 31 is arranged between the second electrical group 32 and the heat exchange device 27, so that the first electrical group 31 can be closer to the heat exchange device 27, and thus the first electrical group 31 can exchange heat with the heat exchange device 27 more quickly.

[0077] In the present example, by arranging the first electrical group 31 and the second electrical group 32 along the third direction 6a, the internal space of the cabinet 10 can be fully utilized. Since the heat generation power of the first electrical group 31 is greater than that of the second electrical group 32, the electrical components 30 that are more prone to heat can be cooled preferentially to reduce the problem of local overheating in the cabinet 10. In some examples, the first electrical group 31 is at least partially attached to the cooling plate 312 so that the first electrical group 31 can directly exchange heat with the cooling plate 312. During operation of the first air supply device 23, the airflow flows in the inner cavity 17, which can continuously transport low-temperature air to the direction of the second electrical group 32, thereby forming a circulation in the inner cavity 17.

[0078] In some examples, the energy storage converter further comprises a partition 60, the partition 60 is arranged between the first electrical group 31 and the second electrical group 32, and the partition 60 has a gap between the partition 60 and the inner wall surface of the cabinet 10. The partition 60 can be used as an intermediate partition between the second electrical group 32 and the first electrical group 31, so as to separate the electrical components 30 with different functions from each other, and reduce the interference between different electrical components 30. The partition 60 is arranged in the inner cavity 17, and the partition 60 can be connected to the cabinet 10, so that the partition 60 can be used as a support for the first electrical group 31 and the second electrical group 32, to facilitate the fixation of the electrical components 30. In the example, the partition 60 can divide the inner cavity 17 into two areas, and the two areas are communicated with each other, so that the air flow can reach the second electrical group 32 through the gap between the partition 60 and the inner wall surface of the cabinet 10.

[0079] In some examples, the electrical components 30 further comprise a third electrical group 33, the third electrical group 33 is arranged between the second electrical group 32 and the second end cover 16, the third electrical group 33 has a lower heat generation power than the second electrical group 32, and the third electrical group 33 and the second electrical group 32 are separated by the partition 60. The third electrical group 33 can comprise a monitoring board 331, a battery management module 332, etc. The partition 60 is arranged between the second electrical group 32 and the third electrical group 33, and is used to isolate the second electrical group 32 and the third electrical group 33. The partition 60 has a gap between the partition 60 and the inner wall surface of the cabinet 10, so that the air flow can flow to the third electrical group 33 through the partition 60. The partition 60 can also be used to support the third electrical group 33, so that the third electrical group 33 is connected to the cabinet 10 through the partition 60. The third electrical group 33 is arranged between the second electrical group 32 and the second end cover 16, and the third electrical group 33 has a lower heat generation power than the second electrical group 32, so that the electrical components 30 that generate heat more easily are arranged closer to the heat exchange device 27.

[0080] In some examples, the energy storage converter further comprises a second air supply device 40, the second air supply device 40 is arranged in the inner cavity 17, and the second air supply device 40 is arranged closer to the air inlet 25 than the air outlet 26. The second air supply device 40 is used to draw the air flow at the electrical components 30 to the air inlet 25.

[0081] The second air supply device 40 can be a fan, and the second air supply device 40 is used to form a negative pressure to accelerate the air flow in the inner cavity 17. The second air supply device 40 is used to draw the air flow at the electrical components 30 to the air inlet 25, so that the air flow can be collected to the air inlet 25, and then form a circulation.

[0082] Optionally, the second air supply device 40 can be located at the same side of the cabinet 10 as the air outlet 26; optionally, the air inlet 25 is arranged close to the first wall 11, and the second air supply device 40 can be arranged close to the first wall 11, the inlet of the second air supply device 40 faces the electrical components 30, and the air flow output from the outlet of the second air supply device 40 can flow along the first wall 11 towards the air inlet 25. In some examples, the heat exchange device 27 can be arranged close to the third wall 13, and the second air supply device 40 can be arranged between the heat exchange device 27 and the fourth wall 14, to accelerate the air flow close to the fourth wall 14 to flow towards the air inlet 25. Optionally, the number of the second air supply device 40 can be multiple, and the inlets of the multiple second air supply devices 40 can respectively correspond to different positions of the electrical components 30, to be used for pumping the air flow at different positions of the electrical components 30 towards the air inlet 25.

[0083] In some examples, along the third direction 6a, the height of the second air supply device 40 is not less than the height of the partition 60 between the first electrical group 31 and the second electrical group 32. In the present example, the inlet of the second air supply device 40 can at least correspond to the first electrical group 31 and the second electrical group 32, so that the second air supply device 40 can be used to pump the air flow at the first electrical group 31 and the second electrical group 32 towards the air inlet 25. In some examples, the height of the second air supply device 40 is not less than the height of the partition 60 between the second electrical group 32 and the third electrical group 33, so that the second air supply device 40 can act on the electrical components 30 of the third electrical group 33.

[0084] The above is only the embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An energy storage converter, characterized in that: include: a chassis, wherein a closed inner cavity is formed in the chassis; an electrical component disposed in the inner cavity; as well as A refrigeration component is arranged in the inner cavity, and the refrigeration component includes a first air supply device and a heat exchange device. The heat exchange device has an air inlet and an air outlet. The air inlet is set in a first direction, and the air outlet is set in a second direction. The first direction and the second direction are set at an angle. The electrical component is at least partially located on one side of the air outlet along the second direction; wherein, at least one of the air inlet and the air outlet is provided with the first air supply device, and the first air supply device is used to form a negative pressure so that the air flow enters the heat exchange device from the air inlet and is output from the air outlet after heat exchange.

2. The energy storage converter according to claim 1, characterized in that: The chassis has a first wall and a second wall arranged opposite to each other along the first direction, and the electrical component is arranged between the first wall and the second wall; Wherein, the air inlet is arranged closer to the first wall relative to the second wall, and / or the air outlet is arranged closer to the second wall relative to the first wall.

3. The energy storage converter according to claim 2, characterized in that: The chassis also has a first end cover and a second end cover arranged opposite to each other, and a third wall and a fourth wall arranged between the first end cover and the second end cover, the third wall and the fourth wall are arranged opposite to each other along the second direction, the first wall and the second wall are arranged between the first end cover and the second end cover, and the first wall, the second wall, the third wall, the fourth wall, the first end cover and the second end cover enclose a closed inner cavity.

4. The energy storage converter according to claim 3, characterized in that: The heat exchange device is arranged close to the third wall, and the air outlet is arranged toward the fourth wall.

5. The energy storage converter according to claim 3, characterized in that: Sealing components are respectively provided at the connections between the first end cover and the second end cover and the first wall, the second wall, the third wall and the fourth wall.

6. The energy storage converter according to any one of claims 1 to 5, characterized in that: The heat exchange device comprises: a cooling plate connected to the chassis; and a heat exchanger connected to the refrigeration plate, the heat exchanger being provided with a heat exchange channel and an air duct inlet and an air duct outlet communicating with the heat exchange channel, the air duct inlet communicating with the air inlet, and the air duct outlet communicating with the air outlet; Wherein, at least one of the air duct inlet and the air duct outlet is connected to the first air supply device, and the first air supply device is used to form a negative pressure so that the air flow is output from the air inlet to the air outlet.

7. The energy storage converter according to claim 6, characterized in that: The heat exchanger is arranged between the first end cover and the refrigeration plate; and the electrical component is at least partially located between the refrigeration plate and the second end cover.

8. The energy storage converter according to claim 6, characterized in that: The electrical component includes a first electrical group and a second electrical group, wherein the first electrical group is arranged between the heat exchange device and the second electrical group, wherein the heating power of the first electrical group is greater than the heating power of the second electrical group.

9. The energy storage converter according to claim 8, characterized in that: The first electrical group includes an inverter inductor and an IGBT board, wherein at least one of the inverter inductor and the IGBT board is arranged in contact with the cooling plate.

10. The energy storage converter according to claim 8, characterized in that: The heat exchanger is arranged between the first end cover and the refrigeration plate; the heat exchange device is arranged closer to the first end cover than the second end cover; the direction from the first end cover to the second end cover is the third direction; the first electrical group and the second electrical group are arranged along the third direction, and the third direction is set at an angle to the first direction and the second direction respectively.

11. The energy storage converter according to claim 10, characterized in that: The energy storage converter further includes: A partition is arranged in the inner cavity; the partition is arranged between the first electrical group and the second electrical group, and there is a gap between the partition and the inner wall surface of the chassis.

12. The energy storage converter according to claim 11, characterized in that: The electrical component also includes a third electrical group, which is arranged between the second electrical group and the second end cover. The heating power of the third electrical group is smaller than the heating power of the second electrical group. The partition is arranged between the third electrical group and the second electrical group.

13. The energy storage converter according to any one of claims 10 to 12, characterized in that: The energy storage converter further includes: The second air supply device is arranged in the inner cavity. The second air supply device is arranged closer to the air inlet than the air outlet. The second air supply device is used to draw the airflow at the electrical component toward the air inlet.

14. The energy storage converter according to claim 13, characterized in that: Along the third direction, the height of the second air supply device is not less than the height of the partition between the first electrical group and the second electrical group.

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