energy storage converter

Abstract

The application discloses an energy storage converter, comprising a cabinet, an electrical component and a refrigeration component, a closed inner cavity is formed in the cabinet; the electrical component is arranged in the inner cavity; the refrigeration component is arranged in the inner cavity, the refrigeration component comprises 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 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 airflow enters the heat exchange device from the air inlet and is output from the air outlet after heat exchange. In the example of the application, the air supply device arranged in the cabinet is used to cool the electrical component in the cabinet, the airflow in the cabinet is circulated, heat exchange is performed with the electrical component, and the problem of overheating of the electrical component is reduced.

Description

Technical Field

[0001] This application relates to the field of power conversion technology, and in particular to an energy storage converter. Background Technology

[0002] An energy storage converter is a device used in power systems. Its main function is to convert direct current (DC) energy into alternating current (AC) energy, and it can also convert AC energy back to DC energy for storage when needed. Energy storage converters have important applications in renewable energy and power storage systems, enabling the balancing and optimized utilization of energy. However, because the electrical components inside the energy storage converter generate heat during operation, overheating of the electrical components within the chassis can easily occur during long-term operation. Utility Model Content

[0003] This application provides an energy storage converter designed to improve the problem of overheating of electrical components within the energy storage converter.

[0004] To achieve the above-mentioned technical effects, one technical solution adopted in this application is: to provide an energy storage converter, comprising:

[0005] The chassis has a closed internal cavity.

[0006] Electrical components, housed within the cavity; and

[0007] A refrigeration component is disposed within the inner cavity. 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 disposed facing a first direction, and the air outlet is disposed facing a second direction. The first direction and the second direction are arranged at an angle. The electrical component is at least partially located on one side of the air outlet along the second direction. The first air supply device is provided on at least one of the air inlet and the air outlet. The first air supply device is used to create a negative pressure so that the airflow enters the heat exchange device from the air inlet, exchanges heat, and then exits from the air outlet.

[0008] The chassis has a first wall and a second wall that are arranged opposite to each other along a first direction, and the electrical components are disposed between the first wall and the second wall.

[0009] The air inlet is positioned closer to the first wall than the second wall, and / or the air outlet is positioned closer to the second wall than the first wall.

[0010] The chassis also has a first end cover and a second end cover that are arranged opposite to each other, as well as a third wall and a fourth wall that are located between the first end cover and the second end cover. The third wall and the fourth wall are arranged opposite to each other along a second direction. The first wall and the second wall are located between the first end cover and the second end cover. The first wall, the second wall, the third wall, the fourth wall, the first end cover, and the second end cover together form a closed inner cavity.

[0011] The heat exchange device is located near the third wall, and the air outlet is located facing the fourth wall.

[0012] Sealing components are provided at the connections between the first end cap and the second end cap and the first wall, the second wall, the third wall, and the fourth wall, respectively.

[0013] The heat exchange device includes:

[0014] Cooling plate, connected to the chassis; and

[0015] The heat exchanger is connected to the cooling plate. The heat exchanger is equipped with a heat exchange channel and an air duct inlet and an air duct outlet that connect the heat exchange channel. The air duct inlet connects to the air inlet and the air duct outlet connects to the air outlet.

[0016] At least one of the air duct inlet and air duct outlet is connected to a first air supply device, which is used to create a negative pressure so that airflow is output from the air inlet to the air outlet.

[0017] The heat exchanger is located between the first end cover and the cooling plate; the electrical components are located at least partially between the cooling plate and the second end cover.

[0018] The electrical components include a first electrical group and a second electrical group. The first electrical group is disposed 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.

[0019] The first electrical assembly includes an inverter inductor and an IGBT board, wherein at least one of the inverter inductor and the IGBT board is attached to the cooling board.

[0020] The heat exchanger is located between the first end cover and the cooling plate; the heat exchange device is located 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.

[0021] The energy storage converter also includes:

[0022] A partition is provided between the first electrical group and the second electrical group, and there is a gap between the partition and the inner wall of the chassis.

[0023] The electrical components also include a third electrical group, which is located between the second electrical group and the second end cap. The heating power of the third electrical group is less than that of the second electrical group, and a partition is provided between the third electrical group and the second electrical group.

[0024] The energy storage converter also includes:

[0025] The second air supply device is located in the inner cavity. The second air supply device is positioned closer to the air inlet than the air outlet. The second air supply device is used to draw airflow from the electrical components toward the air inlet.

[0026] 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.

[0027] In this application example, a heat exchange device installed inside the chassis is used to cool the electrical components inside the chassis. By setting the air inlet of the heat exchange device to face a first direction and the air outlet to face a second direction, and by placing at least part of the electrical components between the air inlet and the air outlet, the airflow forms a circulation inside the chassis. At least part of the airflow can flow through the electrical components to exchange heat with them, thereby reducing the problem of overheating of the electrical components. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0030] Figure 2 This is a schematic diagram of another example of the energy storage converter in this application;

[0031] Figure 3 This is a schematic diagram of an example of the installation location of the cooling component of this application; wherein, the arrows in the figure indicate the airflow circulation direction;

[0032] Figure 4 This is a schematic diagram of an example of a cooling component of this application;

[0033] Figure 5 This is a schematic diagram illustrating an example of the arrangement of electrical components within the chassis of this application;

[0034] Figure 6 This is a schematic diagram illustrating another example of the arrangement of electrical components within the chassis in this application;

[0035] Figure 7 This is a structural schematic diagram illustrating another example of the arrangement of electrical components within the chassis in this application.

[0036] Wherein: 10, chassis; 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 component; 21. Refrigeration plate; 22. Heat exchanger; 221. Heat exchange channel; 222. Air duct inlet; 223. Air duct outlet; 23. First air supply device; 24. Baffle plate; 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 Copper 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 Adapter Copper Busbar; 323. AC Output Copper Busbar; 324. AC Output Board; 33. Third Electrical Group; 331. Monitoring Board; 332. BMU Battery Management Module;

[0039] 40. Second air supply device;

[0040] 50. Sealing components;

[0041] 60. Partition;

[0042] 3a. First direction; 3b. Second direction;

[0043] 6a. Third-party orientation. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified. It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" in this application description should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this document based on the specific circumstances.

[0046] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0047] An energy storage converter is a core device enabling bidirectional flow of electrical energy. It primarily controls the charging and discharging process of batteries and performs AC / DC conversion. Its working principle is based on power electronics technology, using the switching of devices to achieve energy conversion and bidirectional flow. Because energy storage projects are generally large-scale, have high energy density, and generate significant heat, some technologies incorporate fans within the energy storage converter to expel hot air and reduce its internal temperature. However, due to the sealing requirements of energy storage converters, existing heat dissipation methods may affect their operation.

[0048] Please see Figures 1 to 7 This application provides an example of an energy storage converter, which includes a chassis 10, an electrical component 30, and a cooling component 20. The chassis 10 has a closed inner cavity 17. The electrical component 30 is disposed in the inner cavity 17. The cooling component 20 is disposed in the inner cavity 17 and includes 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 disposed facing a first direction 3a, and the air outlet 26 is disposed facing 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 create a negative pressure so that the airflow enters the heat exchange device 27 from the air inlet 25 for heat exchange and is then output from the air outlet 26.

[0049] The chassis 10 forms an enclosed space to house the electrical components 30. The chassis 10 can be cuboid or other shapes, and an internal cavity 17 is formed within it. The chassis 10 can have a single cavity 17 or multiple chambers. The internal cavity 17 houses the electrical components 30 and the cooling components 20. The chassis 10 is enclosed to reduce the possibility of moisture entering the internal cavity 17 from the outside. In some examples, sealing components 50 are provided at the edges of the various walls of the chassis 10. These sealing components 50 seal the joints between adjacent walls to improve the sealing performance of the chassis 10. In some examples, the chassis 10 has a first wall 11 and a second wall 12 disposed opposite to each other, a third wall 13 and a fourth wall 14 disposed between the first wall 11 and the second wall 12, and the upper and lower walls of the chassis 10 are a first end cover 15 and a second end cover 16, wherein 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 a closed inner cavity 17.

[0050] Please see Figure 5 , Figure 6 and Figure 7Electrical components 30 are housed within the inner cavity 17 and comprise various functional modules of the energy storage converter. In some examples, electrical components 30 are divided into multiple groups. In this application example, electrical components 30 can be grouped and installed according to factors such as function and heat generation. Optionally, electrical components 30 may include a first electrical group 31, which may include an inverter inductor 311, an IGBT board 312, a DC input copper busbar 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. Electrical components 30 may also include a second electrical group 32, which may include a power board 321, an AC / DC converter copper busbar 322, an AC output copper busbar 323, and an AC output board 324. Electrical components 30 may also include a third electrical group 33, which may include a monitoring board 331, a BMU battery management module 332, etc.

[0051] The cooling component 20 is disposed in the inner cavity 17 to generate cooling capacity. The cooling component 20 can exchange heat with the air in the inner cavity 17 to cool the air in the inner cavity 17, and then indirectly exchange heat with the electrical component 30. Optionally, the cooling component 20 can also be directly attached to a part of the electrical component 30 to directly exchange heat with the electrical component 30.

[0052] The refrigeration assembly 20 includes a heat exchange device 27, which has an air inlet 25 and an air outlet 26 spaced apart. The spaced-apart arrangement means that the air inlet 25 and the air outlet 26 do not overlap, so that airflow can enter the heat exchange device 27 through the air inlet 25 and exit the heat exchange device 27 through the air outlet 26. The airflow can exchange heat with the heat exchange device 27 to cool the airflow.

[0053] The cooling assembly 20 includes a first air supply device 23, which is used to create a negative pressure to accelerate the airflow from the air inlet 25 to the air outlet 26. In this application example, the first air supply device 23 can be provided at least one of the air inlet 25 and the air outlet 26 to accelerate the airflow.

[0054] The air inlet 25 is oriented towards the first direction 3a, meaning that the plane containing the air inlet 25 faces the first direction 3a, as defined as follows: Figure 3The first direction 3a is defined as the direction 3a in the middle. The plane containing the air inlet 25 can be perpendicular to the first direction 3a or inclined at a certain angle to the first direction 3a, allowing airflow to enter the air inlet 25. It is understood that the air inlet 25 is not directly attached to the inner wall of the chassis 10 so that airflow can enter the air inlet 25. Optionally, the heat exchange device 27 can be set close to one of the side walls of the chassis 10. For example, the chassis 10 can include the six walls in any of the above examples. The heat exchange device 27 can be set close to the third wall 13 of the chassis 10, the air outlet 26 can be set towards the fourth wall 14, and the air inlet 25 can be set towards the first wall 11.

[0055] The air outlet 26 is oriented towards the second direction 3b, meaning that the plane containing the air outlet 26 faces the second direction 3b, as defined as follows. Figure 3 In the case of direction 3b, the plane containing the air outlet 26 can be perpendicular to or inclined at a certain angle to the second direction 3b, allowing airflow to be output from the air outlet 26. When the first direction 3a and the second direction 3b are set at an angle, it means that the first direction 3a and the second direction 3b are not parallel, and after the airflow is output from the air outlet 26, it is not directly transported to the direction of the air inlet 25. In some examples, the first direction 3a and the second direction 3b are perpendicular; in some examples, the first direction 3a is the width direction of the chassis 10, and the second direction 3b is the height or length direction of the chassis 10.

[0056] The electrical component 30 is at least partially located on one side of the air outlet 26 along the second direction 3b, meaning that the electrical component 30 at least partially blocks the outside of the air outlet 26, so that the airflow output from the air outlet 26 does not flow directly to the air inlet 25. The airflow output from the air outlet 26 can also act on the electrical component 30 to exchange heat with it. After heat exchange, the airflow can flow towards the air inlet 25 so that it can re-enter the heat exchange device 27 for heat exchange. In this example, the electrical component 30 can be directly blocked on one side of the air outlet 26 along the second direction 3b. Optionally, the electrical component 30 can also be offset from the air outlet 26, that is, the electrical component 30 does not directly block the air outlet 26, so that the airflow output from the air outlet 26 can flow along the gap formed between the electrical components 30 or between the electrical component 30 and the inner wall of the chassis 10, thereby prolonging the residence time of the cold airflow in the chassis 10 and thus prolonging the heat exchange time of the cold airflow.

[0057] In this application example, by forming a closed inner cavity 17 within the chassis 10, the electrical components 30 can be enclosed within the chassis 10, thereby improving the waterproof and dustproof performance of the electrical components 30. Since the heat exchange device 27 is used to exchange heat with the airflow within the inner cavity 17, the airflow within the enclosed space of the inner cavity 17 can be accelerated, utilizing the air to exchange heat with the electrical components 30, thus reducing the temperature of the electrical components 30. In this example, by having the air inlet 25 and air outlet 26 of the heat exchange device 27 face different directions, the residence time of the airflow output from the air outlet 26 at the electrical components 30 can be extended, allowing the airflow to exchange heat with the electrical components 30 more effectively. In this application, the electrical components 30 are enclosed within the inner cavity 17, and air circulation is only achieved through the heat exchange device 27 within the inner cavity 17. Since air from outside the chassis 10 is not introduced to participate in the heat exchange, the impact of external moisture on the electrical components 30 can be reduced, which helps improve the sealing and waterproof performance of the energy storage converter.

[0058] In some examples, the chassis 10 has a first wall 11 and a second wall 12 arranged opposite to each other along a first direction 3a, and an electrical component 30 is disposed between the first wall 11 and the second wall 12; wherein the air inlet 25 is disposed closer to the first wall 11 than the second wall 12, and the first wall 11 and the second wall 12 can be two opposite side walls of the chassis 10, the first wall 11 and the second wall 12 can be arranged parallel to each other, or the first wall 11 can be not arranged parallel to the second wall 12. The electrical component 30 is disposed between the first wall 11 and the second wall 12. The air inlet 25 being disposed close to the first wall 11 means that when the heat exchange device 27 is installed, the air inlet 25 can be disposed adjacent to the first wall 11, and there is a gap between the air inlet 25 and the first wall 11 so that airflow can enter the heat exchange device 27 through the gap between the first wall 11 and the air inlet 25. In this example, by positioning the air inlet 25 close to the first wall 11, the airflow output from the air outlet 26 can remain within the inner cavity 17 for a longer period, thereby extending the heat exchange time between the low-temperature airflow and the electrical component 30 and improving the utilization efficiency of the low-temperature airflow. Because the air inlet 25 is positioned 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 towards the air inlet 25, further extending the heat exchange time between the low-temperature airflow and the electrical component 30.

[0059] In some examples, the chassis 10 has a first wall 11 and a second wall 12 arranged opposite to each other along a first direction 3a, and the electrical components 30 are disposed between the first wall 11 and the second wall 12; the air outlet 26 is disposed close to the second wall 12. In this example, the air outlet 26 is disposed close to the second wall 12, meaning that the air outlet 26 is closer to the second wall 12 than the first wall 11, so that the airflow entering 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 arranged opposite to each other, 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 extending the residence time of the low-temperature airflow in the inner cavity 17 and improving the utilization rate of the low-temperature airflow. In this example, the direction from the first wall 11 to the second wall 12 can be the first direction 3a, and the air outlet 26 is not directly facing the first wall 11 or the second wall 12. Optionally, the air outlet 26 can face at least one of the fourth wall 14, the first end cover 15, or the second end cover 16 of the chassis 10. In this example, the electrical component 30 is disposed between the first wall 11 and the second wall 12. The air outlet 26 can be disposed toward the gap between the electrical component 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 component 30, it can extend the delivery distance of the airflow along the second direction 3b, thereby extending the heat exchange time between the airflow and the electrical component 30.

[0060] In this example, the distance between the air inlet 25 and the first wall 11, as well as the distance between the air outlet 26 and the second wall 12, can be selected according to the volume of the chassis 10 and the number and type of electrical components 30. In order to reduce the space occupied by the cooling components 20, the distance between the air inlet 25 and the first wall 11 can be minimized while allowing airflow. The distance between the air outlet 26 and the second wall 12 can be minimized while ensuring that airflow can be output from the air outlet 26.

[0061] In some examples, the chassis 10 further includes a first end cover 15 and a second end cover 16 disposed opposite to each other, and a third wall 13 and a fourth wall 14 disposed between the first end cover 15 and the second end cover 16. The third wall 13 and the fourth wall 14 are disposed opposite to each other along a second direction 3b. The first wall 11 and the second wall 12 are disposed 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 a closed inner cavity 17. In this example, by enclosing 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 to form a hexahedral structure, it is convenient to place electrical components 30 inside the chassis 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 be enclosed to form a cuboid structure.

[0062] In some examples, the heat exchanger 27 is positioned close to the third wall 13, and the air outlet 26 is positioned facing the fourth wall 14.

[0063] In this example, it is assumed that the first wall 11 and the second wall 12 are the left and right side walls of the chassis 10, and the third wall 13 and the fourth wall 14 can be the front and rear side walls of the chassis 10. The heat exchange device 27 is positioned close to the third wall 13 so that it is near the edge of the chassis 10, reducing interference between the heat exchange device 27 and the electrical components 30. The air outlet 26 of the heat exchange device 27 is positioned towards the fourth wall 14 so that the airflow output from the air outlet 26 flows toward the fourth wall 14. Optionally, there is a gap between the electrical components 30 and the second wall 12, and the airflow output from the air outlet 26 can flow along the gap between the electrical components 30 and the second wall 12 toward the fourth wall 14 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, sealing components 50 are provided at the connections between the first end cap 15 and the second end cap 16 and the first wall 11, the second wall 12, the third wall 13, and the fourth wall 14. The sealing components 50 can be sealant, sealing strips, or other materials capable of providing a seal. The sealing components 50 are used to seal the gaps at the connections between adjacent walls, thereby ensuring a better seal for the chassis 10 and reducing the impact of external moisture on the electrical components 30. In some examples, the sealing components 50 near the first end face are interconnected, and the sealing components 50 near the second end face are interconnected, forming two annular structures to simplify the installation of the sealing components 50. In some examples, grooves are provided on the chassis 10 for engaging the sealing components 50, which engage at predetermined positions on the chassis 10. In some examples, the sealing components 50 are adhered to predetermined positions on the chassis 10.

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

[0066] The cooling plate 312 is used for cooling. In some examples, the cooling plate 312 can be a liquid cooling plate 312. The liquid cooling plate 312 can contain microchannels or curved channels. Liquid cooling is achieved by circulating coolant in the channels. The coolant can be materials such as water glycol or silicone oil.

[0067] The heat exchanger 22 is connected to the cooling plate 312 and is used for heat exchange with the cooling plate 312. In this application example, the heat exchanger 22 can be heat exchange fins or other structures that can perform heat exchange. The heat exchanger 22 can be integrally set with the cooling plate 312, or the heat exchanger 22 can be separately set with the cooling plate 312 and interconnected. For ease of description, the following description uses multiple spaced fins as an example of the heat exchanger 22. 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 that connect to the heat exchange channel 221, wherein the air duct inlet 222 connects to the air inlet 25, and the air duct outlet 223 connects to the air outlet 26. At least one of the air duct inlet 222 and 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 draw 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, it is output from 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 located at the air duct outlet 223 of the heat exchanger 22, the inlet of the first air supply device 23 is connected to the air duct outlet 223, and the outlet of the first air supply device 23 forms an air outlet 26.

[0069] In some examples, heat exchanger 22 is located between first end cap 15 and cooling plate 312; electrical component 30 is at least partially located between cooling plate 312 and second end cap 16.

[0070] In this example, the heat exchanger 22 is positioned between the first end cap 15 and the cooling plate 312, so that the cooling plate 312 and the first end cap 15 limit the heat exchanger 22. In this example, the heat exchanger 22 can be limited by the side surface of the cooling plate 312 facing the second end cap 16 and the first end cap 15, so that a heat exchange channel 221 is formed between the cooling plate 312, the second end cap 16, and adjacent fins. In some examples, a baffle plate 24 is provided on the second end cap 16, and a first air supply device 23 is provided on the baffle plate 24. A cavity is formed in the baffle plate 24, and at least two through holes communicating with the cavity are also provided on the baffle plate 24. One through hole is connected to the ventilation outlet 223, and the other through hole is connected to 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 to increase the distance between the first air supply device 23 and the second end cover 16, thereby raising the air outlet position of the first air supply device 23. On the one hand, this allows the low-temperature airflow output by the first air supply device 23 to act more easily on the electrical components 30. On the other hand, it makes it easier to adjust the angle of the air outlet 26 according to the distribution position of the electrical components 30 with different heat generation powers, so that the air outlet position of the air outlet 26 is more targeted.

[0071] In some examples, electrical component 30 includes a first electrical group 31 and a second electrical group 32, the first electrical group 31 being disposed between the heat exchange device 27 and the second electrical group 32, wherein the heating power of the first electrical group 31 is greater than the heating power of the second electrical group 32.

[0072] The first electrical group 31 may include multiple electrical modules and can be electrically connected to the second electrical group 32. Optionally, the first electrical group 31 may include an inverter inductor 311, an IGBT board 312, a DC input copper busbar 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 second electrical group 32 includes a power board 321, an AC / DC conversion copper busbar 322, an AC output copper busbar 323, and an AC output board 324. The first electrical group 31 is located between the heat exchange device 27 and the second electrical group 32, making the first electrical group 31 closer to the heat exchange device 27. The heating 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 their heat generation power, so that those with higher heat generation power are installed closer to the heat exchange device 27, thereby accelerating the heat exchange of the electrical components 30 with higher heat generation power and reducing the possibility of overheating inside the chassis 10.

[0073] In some examples, the first electrical group 31 includes an inverter inductor 311 and an IGBT board 312, wherein at least one of the inverter inductor 311 and the IGBT board 312 is disposed in contact with the cooling plate 312 so that at least one of the inverter inductor 311 and the IGBT board 312 directly exchanges heat with the cooling plate 312 to accelerate the heat dissipation of the inverter inductor 311 and the IGBT board 312. In this example, since the inverter inductor 311 and the IGBT board 312 have high heat generation power, by making the inverter inductor 311 and the IGBT board 312 in direct contact with the cooling plate 312, the cooling rate 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 located between the first end cover 15 and the cooling plate 312; the heat exchange device 27 is located closer to the first end cover 15 than the second end cover 16; the direction from the first end cover 15 to the second end cover 16 is a third direction 6a; the first electrical assembly 31 and the second electrical assembly 32 are arranged along the third direction 6a, which is set at an angle to the first direction 3a and the second direction 3b, respectively.

[0075] The third direction 6a is set at an angle to the first direction 3a and the second direction 3b, respectively. This means that the third direction 6a is not parallel to the first direction 3a or the second direction 3b. In this example, the third direction 6a can be the height direction of the chassis 10, the first direction 3a can be the length direction of the chassis 10, and the second direction 3b can be the width direction of the chassis 10.

[0076] The heat exchange device 27 is positioned closer to the first end cover 15 than the second end cover 16, meaning 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 assembly 31 and the second electrical assembly 32 are arranged along the third direction 6a, and the first electrical assembly 31 is located between the second electrical assembly 32 and the heat exchange device 27, so that the first electrical assembly 31 can be closer to the heat exchange device 27, thereby enabling the first electrical assembly 31 to exchange heat with the heat exchange device 27 more quickly.

[0077] In this example, by arranging the first electrical assembly 31 and the second electrical assembly 32 along the third direction 6a, the internal space of the chassis 10 can be fully utilized. Since the heat dissipation power of the first electrical assembly 31 is greater than that of the second electrical assembly 32, the electrical components 30, which generate more heat, can be cooled preferentially, thereby reducing the problem of localized overheating inside the chassis 10. In some examples, the first electrical assembly 31 is at least partially attached to the cooling plate 312 so that the first electrical assembly 31 can directly exchange heat with the cooling plate 312. During the operation of the first air supply device 23, the airflow flows within the inner cavity 17, continuously delivering low-temperature air towards the second electrical assembly 32, thereby forming a circulation within the inner cavity 17.

[0078] In some examples, the energy storage converter also includes a partition 60, which is disposed between the first electrical group 31 and the second electrical group 32, with a gap between the partition 60 and the inner wall of the chassis 10. The partition 60 can serve as an intermediate separator between the second electrical group 32 and the first electrical group 31, separating electrical components 30 with different functions and reducing interference between them. The partition 60 is disposed within the inner cavity 17 and can be connected to the chassis 10, so that it can serve as a support for the first electrical group 31 and the second electrical group 32, facilitating the fixation of the electrical components 30. In this example, the partition 60 can divide the inner cavity 17 into two interconnected regions, allowing airflow to reach the second electrical group 32 through the gap between the partition 60 and the inner wall of the chassis 10.

[0079] In some examples, electrical assembly 30 further includes a third electrical group 33, which is disposed between the second electrical group 32 and the second end cap 16. The heat dissipation power of the third electrical group 33 is less than that of the second electrical group 32. A partition 60 is disposed between the third electrical group 33 and the second electrical group 32. The third electrical group 33 may include a monitoring board 331, a BMU battery management module 332, etc. The partition 60 is disposed between the second electrical group 32 and the third electrical group 33 to isolate the second electrical group 32 and the third electrical group 33. The partition 60 has a gap with the inner wall of the chassis 10 so that airflow can flow through the partition 60 to the layer where the third electrical group 33 is located. 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 chassis 10 through the partition 60. The third electrical assembly 33 is disposed between the second electrical assembly 32 and the second end cap 16. The heating power of the third electrical assembly 33 is less than that of the second electrical assembly 32, so that the electrical component 30, which is easier to heat up, is disposed closer to the heat exchange device 27.

[0080] In some examples, the energy storage converter also includes a second air supply device 40 disposed in the inner cavity 17. The second air supply device 40 is disposed closer to the air inlet 25 than the air outlet 26. The second air supply device 40 is used to draw airflow from the electrical components 30 toward the air inlet 25.

[0081] The second air supply device 40 can be a fan. The second air supply device 40 is used to create negative pressure to accelerate the airflow in the inner cavity 17. The second air supply device 40 is used to draw the airflow from the electrical component 30 toward the air inlet 25 so that the airflow can converge toward the air inlet 25 and thus form a circulation.

[0082] Optionally, the second air supply device 40 can be located on the same side of the chassis 10 as the air outlet 26. Optionally, the air inlet 25 is located near the first wall 11, and the second air supply device 40 can be located near the first wall 11, with the inlet of the second air supply device 40 facing the electrical component 30. The airflow 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 located near the third wall 13, and the second air supply device 40 can be located between the heat exchange device 27 and the fourth wall 14 to accelerate the flow of air near the fourth wall 14 towards the air inlet 25. Optionally, there can be multiple second air supply devices 40, and the inlets of the multiple second air supply devices 40 can correspond to electrical components 30 at different locations to draw airflow from electrical components 30 at different locations 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 this example, the inlet of the second air supply device 40 may 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 draw airflow from the first electrical group 31 and the second electrical group 32 toward 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 are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. An energy storage converter, characterized in that, include: A chassis, wherein a closed internal cavity is formed inside the chassis; Electrical components are disposed within the cavity; as well as A refrigeration component is disposed within the inner cavity. 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 disposed facing a first direction, and the air outlet is disposed facing a second direction. The first direction and the second direction are arranged at an angle. The electrical component is at least partially located on one side of the air outlet along the second direction. The first air supply device is provided on at least one of the air inlet and the air outlet. The first air supply device is used to create a negative pressure so that the airflow enters the heat exchange device from the air inlet, exchanges heat, and then exits from the air outlet.

2. The energy storage converter as described in claim 1, characterized in that, The chassis has a first wall and a second wall that are arranged opposite to each other along the first direction, and the electrical components are disposed between the first wall and the second wall; Wherein, the air inlet is disposed closer to the first wall than the second wall, and / or the air outlet is disposed closer to the second wall than the first wall.

3. The energy storage converter as described in claim 2, characterized in that, The chassis also has a first end cover and a second end cover disposed opposite to each other, and a third wall and a fourth wall disposed between the first end cover and the second end cover. The third wall and the fourth wall are disposed opposite to each other along the second direction. The first wall and the second wall are disposed between the first end cover and the second end cover. 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 as described in claim 3, characterized in that, The heat exchange device is located near the third wall, and the air outlet is located facing the fourth wall.

5. The energy storage converter as described in claim 3, characterized in that, Sealing components are provided at the connection points of the first end cap and the second end cap with the first wall, the second wall, the third wall and the fourth wall respectively.

6. The energy storage converter according to any one of claims 1 to 5, characterized in that, The heat exchange device includes: A cooling plate, connected to the chassis; and A heat exchanger is connected to the cooling plate. The heat exchanger is provided with a heat exchange channel and an air duct inlet and an air duct outlet that connect the heat exchange channel. The air duct inlet connects to the air inlet, and the air duct outlet connects to 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 create negative pressure so that airflow is output from the air inlet to the air outlet.

7. The energy storage converter as described in claim 6, characterized in that, The heat exchanger is located between the first end cover and the cooling plate; the electrical components are at least partially located between the cooling plate and the second end cover.

8. The energy storage converter as described in claim 6, characterized in that, The electrical components include a first electrical group and a second electrical group, wherein the first electrical group is disposed between the heat exchange device and the second electrical group, and the heating power of the first electrical group is greater than the heating power of the second electrical group.

9. The energy storage converter as described in claim 8, characterized in that, The first electrical assembly includes an inverter inductor and an IGBT board, wherein at least one of the inverter inductor and the IGBT board is attached to the cooling plate.

10. The energy storage converter as described in claim 8, characterized in that, The heat exchanger is disposed between the first end cover and the cooling plate; the heat exchange device is disposed closer to the first end cover than the second end cover; the direction from the first end cover to the second end cover is a third direction; the first electrical assembly and the second electrical assembly are arranged along the third direction, which is set at an angle to the first direction and the second direction, respectively.

11. The energy storage converter as described in claim 10, characterized in that, The energy storage converter also includes: A partition is disposed within the inner cavity; the partition is disposed between the first electrical assembly and the second electrical assembly, and there is a gap between the partition and the inner wall of the chassis.

12. The energy storage converter as described in claim 11, characterized in that, The electrical assembly further includes a third electrical group, which is disposed between the second electrical group and the second end cap. The heating power of the third electrical group is less than that of the second electrical group, and the partition is disposed 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 also includes: A second air supply device is disposed in the inner cavity. The second air supply device is disposed closer to the air inlet than the air outlet. The second air supply device is used to draw airflow from the electrical components toward the air inlet.

14. The energy storage converter as described in 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.

Images