Heat exchange device, single-phase module, power device, energy storage converter and energy storage station

Abstract

The application provides a heat exchange device, a single-phase module, a power device, an energy storage converter and an energy storage station, and relates to the technical field of energy storage converters. The heat exchange device comprises a heat exchange element, a liquid outlet end and a liquid inlet end. The heat exchange element has a first included angle with a horizontal plane, and the heat exchange element comprises a heat exchange flow channel configured to circulate a heat exchange medium. The liquid inlet end is arranged on the heat exchange element and is in communication with the heat exchange flow channel. The liquid outlet end is arranged on the heat exchange element and is located above the liquid inlet end. The liquid outlet end is also in communication with the heat exchange flow channel. The application can improve the heat exchange effect of the heat exchange device, thereby improving the temperature uniformity of the single-phase module.

Description

Technical Field

[0001] This application relates to the field of energy storage converter technology, and in particular to a heat exchange device, a single-phase module, a power device, an energy storage converter, and an energy storage station. Background Technology

[0002] A power conversion system (PCS) is a core component in electrochemical energy storage that enables bidirectional energy flow. It is a power conversion device that allows for bidirectional energy conversion between the power grid and the energy storage system. For example, a PCS can control the charging and discharging process of a battery, performing AC-DC conversion, and can directly supply power to AC loads in the absence of a power grid. In related technologies, a PCS typically consists of power devices and control units. The power devices include three single-phase modules used to achieve AC-DC conversion.

[0003] Single-phase modules generate a lot of heat during operation, which is usually dissipated using liquid cooling plates to reduce the temperature of the single-phase module and, consequently, the temperature of the power devices.

[0004] However, the current heat exchange devices have poor heat exchange efficiency, resulting in excessively high local temperatures in the single-phase modules. This leads to poor temperature uniformity in the single-phase modules and reduces their safety. Utility Model Content

[0005] In view of the above problems, embodiments of this application provide a heat exchange device, a single-phase module, a power device, an energy storage converter, and an energy storage station, which can improve the heat exchange effect of the heat exchange device and thus improve the temperature uniformity of the single-phase module.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides a heat exchange device, comprising:

[0008] A heat exchanger having a first angle with a horizontal plane, and the heat exchanger including a heat exchange channel configured to circulate a heat exchange medium.

[0009] Liquid inlet end, the liquid inlet end is disposed on the heat exchanger and is interconnected with the heat exchange channel;

[0010] The liquid outlet is disposed on the heat exchanger and located above the liquid inlet; wherein the liquid outlet is also in communication with the heat exchange channel.

[0011] In one possible implementation, the first included angle is 90°.

[0012] In one possible implementation, the liquid outlet is disposed near the top of the heat exchanger; or, the liquid outlet is disposed near the top of the heat exchange channel.

[0013] In one possible implementation, the heat exchanger has a centerline extending along a first direction;

[0014] There is a first vertical distance between the liquid outlet end and the top edge of the heat exchanger, and a second vertical distance between the liquid outlet end and the centerline; the first vertical distance is less than the second vertical distance.

[0015] In one possible implementation, the heat exchange channel includes a first heat exchange channel and a second heat exchange channel that are interconnected, wherein the first heat exchange channel is connected to the liquid inlet and the second heat exchange channel is connected to the liquid outlet.

[0016] At least the extension direction of the second heat exchange channel is inclined relative to the centerline of the heat exchange element.

[0017] In one possible implementation, the width of the second heat exchange channel increases in the direction of extension of the second heat exchange channel and in the direction pointing to the liquid outlet.

[0018] The first direction intersects with the second direction.

[0019] In one possible implementation, along the second direction, the second heat exchange channel has a first edge and a second edge disposed opposite to each other, the first edge being adjacent to the top of the heat exchanger;

[0020] The first edge has a second included angle with the centerline of the heat exchanger, and the second included angle is less than or equal to 10°.

[0021] In one possible implementation, the second heat exchange channel includes a plurality of interconnected second sub-heat exchange channels, at least the second sub-heat exchange channels near the top edge of the heat exchange element are inclined relative to the centerline of the heat exchange element;

[0022] Furthermore, the width of the second sub-heat exchange channel, at least near the top edge of the heat exchanger, gradually increases in the second direction.

[0023] In one possible implementation, the extension direction of the first heat exchange channel is inclined relative to the centerline of the heat exchange element;

[0024] In the first direction and away from the liquid inlet end, the width of the first heat exchange channel in the second direction tends to increase.

[0025] In one possible implementation, the first heat exchange channel includes a plurality of interconnected first sub-heat exchange channels, and the width of at least the first sub-heat exchange channel closest to the second heat exchange channel in the second direction gradually increases along the first direction and away from the liquid inlet end.

[0026] In one possible implementation, the heat exchanger is used to exchange heat with the power module; the power module is connected to the heat exchanger, and the edge of the power module toward the top of the heat exchanger is offset from the second sub-heat exchange channel closest to the top edge of the heat exchanger in the second heat exchange channel.

[0027] In one possible implementation, the heat exchanger further includes a liquid inlet connector and a liquid outlet connector, wherein the liquid inlet connector is connected to the liquid inlet end and the liquid outlet connector is connected to the liquid outlet end.

[0028] In one possible implementation, the heat exchange device further includes a connecting plate disposed on the heat exchange element;

[0029] When the heat exchanger includes an outlet connector and an inlet connector, the outlet connector and the inlet connector are disposed on the connecting plate.

[0030] In one possible implementation, the connecting plate is provided with a push-pull handle.

[0031] A second aspect of this application provides a single-phase module, which includes a power module and the heat exchange device described in the first aspect.

[0032] In one possible implementation, the power module is connected to the heat exchange element of the heat exchange device and exchanges heat with the heat exchange element.

[0033] In one possible implementation, the number of power modules includes multiple power modules, which form multiple power components; wherein each power component includes several power modules, and the several power modules are interconnected.

[0034] In one possible implementation, each of the power components includes a first power module, a second power module, and a third power module, wherein the first power module and the second power module are arranged at intervals along a first direction.

[0035] The third power module is disposed on one side of the first power module in the second direction; wherein the first direction and the second direction intersect.

[0036] In one possible implementation, the third power module is also located between the first power module and the second power module.

[0037] In one possible implementation, the first power module is connected to the third power module via a connecting copper busbar; and / or, the second power module is connected to the third power module via a connecting copper busbar.

[0038] The connecting copper busbars in any two adjacent power components are insulated from each other.

[0039] In one possible implementation, the first power module of each power component is connected to the main cascade busbar via a single-phase cascade busbar; and / or, the second power module is connected to the main cascade busbar via a single-phase cascade busbar.

[0040] In one possible implementation, the single-phase stacked busbar includes a first part and a second part, the first part being connected to the second part, and the first part and the second part having an included angle.

[0041] The second part is connected to each of the power components, and the first part is connected to the main stacked busbar.

[0042] In one possible implementation, a first fixed support is also included, through which the single-phase stacked busbar is connected to the heat exchange element of the heat exchange device.

[0043] In one possible implementation, an absorption capacitor is provided at the connection point between the single-phase stacked busbar and the first power module and / or the second power module.

[0044] In one possible implementation, the third power modules of every two adjacent power components are interconnected via a current-sharing copper busbar.

[0045] Two adjacent current-equalizing copper busbars are interconnected via a busbar support copper busbar;

[0046] The busbar support copper busbar is connected to the AC output copper busbar.

[0047] In one possible implementation, the single-phase module further includes a support member connected to the heat exchanger of the heat exchange device and disposed opposite to the single-phase stacked busbar.

[0048] Both the current equalization copper bus and the current bus support copper bus are connected to the support member.

[0049] In one possible implementation, the support member includes a first positioning portion for cooperating with a second positioning portion of the power device; and / or, the support member includes a first sliding portion for cooperating with a second sliding portion of the power device.

[0050] In one possible implementation, the single-phase module further includes a drive module, which is disposed on the heat exchanger and located on one side of the power module;

[0051] The drive module is connected to the power module via an adapter board.

[0052] A third aspect of this application provides a power device, including a support frame and a single-phase module as described in the second aspect, wherein the single-phase module is disposed on the support frame.

[0053] In one possible implementation, a second positioning part is provided on the support frame, and the second positioning part cooperates with the first positioning part of the single-phase module.

[0054] And / or, the support frame is provided with a second sliding part, and the first sliding part of the single-phase module is slidably disposed on the second sliding part.

[0055] In one possible implementation, the first positioning part is a positioning post, and the second positioning part is a positioning hole;

[0056] The first sliding part is the lower surface of the support member of the single-phase module, and the second sliding part is a sliding pad.

[0057] In one possible implementation, the power device further includes a lifting wedge disposed on the support frame and located at the bottom of the single-phase module.

[0058] A fourth aspect of this application provides an energy storage converter, including the power devices described in the third aspect.

[0059] A fifth aspect of this application provides an energy storage station, including an energy storage device and an energy storage converter as described in the fourth aspect, wherein the energy storage converter is electrically connected to the energy storage device.

[0060] The heat exchange device, single-phase module, power device, energy storage converter, and energy storage station provided in this application improve the positioning of the liquid outlet and liquid inlet of the heat exchanger. The liquid outlet is located at the top of the liquid inlet, forming a bottom-in, top-out structure. When the heat exchange medium flows into the heat exchange channel from the bottom liquid inlet and exchanges heat with the single-phase module, it is discharged from the heat exchanger through the top liquid outlet. This utilizes the fluidity of the heat exchange medium to naturally drive the air in the heat exchange channel towards the liquid outlet and out of the heat exchanger, preventing air accumulation inside the heat exchange channel, ensuring smooth flow of the heat exchange medium, improving the uniformity of the heat exchange capacity of the heat exchanger, thereby improving the temperature uniformity of the single-phase module, and ultimately enhancing the performance and service life of the single-phase module.

[0061] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the heat exchange device, single-phase module, power device, energy storage converter, and energy storage station provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0062] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0063] Figure 1 Schematic diagram of the heat exchange device provided in the embodiments of this application Figure 1 ;

[0064] Figure 2 Schematic diagram of the heat exchange device provided in the embodiments of this application Figure 2 ;

[0065] Figure 3 Schematic diagram of the heat exchange device provided in the embodiments of this application Figure 3 ;

[0066] Figure 4 This is a schematic diagram of the structure of a single-phase module provided in an embodiment of this application;

[0067] Figure 5 An exploded view of a single-phase module provided in an embodiment of this application;

[0068] Figure 6 for Figure 5 Enlarged view of region A in the middle;

[0069] Figure 7 This is a schematic diagram of the structure of a single-phase laminated busbar provided in an embodiment of this application;

[0070] Figure 8 A schematic diagram of the support member provided in an embodiment of this application;

[0071] Figure 9 for Figure 4 Enlarged view of region B in the middle;

[0072] Figure 10 This is a schematic diagram of the power device provided in an embodiment of this application.

[0073] Explanation of reference numerals in the attached figures:

[0074] 100: Heat exchange device;

[0075] 110: Heat exchanger; 111: Heat exchange channel; 1111: First heat exchange channel; 1111a: First sub-heat exchange channel; 1112: Second heat exchange channel; 1112a: Second sub-heat exchange channel; 112: Centerline;

[0076] 120: Liquid inlet connector;

[0077] 130: Liquid outlet connector;

[0078] 140: Connecting plate; 141: Push-pull handle;

[0079] 200: Single-phase module;

[0080] 210: Power module; 211: First power module; 212: Second power module; 213: Third power module; 214: Connecting copper busbar; 215: Second connecting piece; 2151: Second connecting hole;

[0081] 220: Single-phase laminated busbar; 221: First part; 222: Second part; 223: First connecting piece; 2231: First connecting hole;

[0082] 230: First fixed bracket;

[0083] 240: Absorption capacitor; 241: Third connecting piece; 2411: Third connecting hole;

[0084] 250: Current sharing copper busbar; 251: Electrode connection terminal;

[0085] 260: Busbar support copper bus;

[0086] 270: AC output copper busbar;

[0087] 280: Support component; 281: First connecting component; 282: Second connecting component; 283: Press-fit bolt; 284: Support base plate; 285: Support side plate; 286: First positioning part;

[0088] 290: Drive module; 291: Adapter board; 292: Wire harness fixing bracket; 293: Wire harness insulation bracket; 294: Drive support plate;

[0089] 300: Power devices;

[0090] 310: Support frame; 320: Lifting wedge; 321: Connecting seat; 322: Wedge block; 330: Guide plate. Detailed Implementation

[0091] As described in the background section, the inventors have discovered that the large temperature difference between the top and bottom of single-phase modules in related technologies is a problem caused by the fact that single-phase modules typically exchange heat with heat exchangers. These heat exchangers are at an angle to the horizontal plane, for example, they are perpendicular to the horizontal plane. The inlet and outlet ends are usually located in the middle of the heat exchanger and are symmetrically arranged relative to its horizontal centerline. As the heat exchanger exchanges heat with the single-phase module, the oxygen content in the heat exchange medium decreases with increasing temperature, causing gas to escape from the heat exchange medium. Especially when the heat exchanger leaks, the gas accumulates above the heat exchanger under the pressure and buoyancy of the inlet and outlet, affecting the entry of the heat exchange medium and resulting in insufficient total heat exchange medium volume. This affects the circulation and heat dissipation of the heat exchange medium, thereby reducing the uniformity of the heat exchange capacity of the heat exchanger and causing excessive local temperature rise in the single-phase module, leading to damage.

[0092] To address the aforementioned technical problems, this application provides an improvement in the placement of the liquid outlet and liquid inlet of a heat exchanger in a heat exchange device, single-phase module, power device, energy storage converter, and energy storage station. The liquid outlet is positioned at the top of the liquid inlet, forming a bottom-in, top-out structure. When the heat exchange medium flows into the heat exchange channel from the bottom inlet and exchanges heat with the single-phase module, it is discharged from the heat exchanger via the top outlet. This utilizes the fluidity of the heat exchange medium to naturally drive air in the heat exchange channel towards the outlet and out of the heat exchanger, preventing air accumulation inside the channel and ensuring smooth flow of the heat exchange medium. This improves the uniformity of the heat exchange capacity of the heat exchanger, thereby enhancing the temperature uniformity of the single-phase module and ultimately improving its performance and lifespan.

[0093] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0094] Please refer to the attached document. Figure 1 To be continued Figure 3 This application provides a heat exchange device 100 for exchanging heat with a single-phase module.

[0095] The heat exchange device 100 includes a heat exchange element 110, which has a first angle with the horizontal plane, meaning that the heat exchange element 110 is inclined relative to the horizontal plane. It should be understood that the size of the first angle needs to be freely set according to the installation method of the power module, and the first angle is the angle formed between the heat exchange device 100 installed in the single-phase module 200 and the horizontal plane. In some embodiments, the first angle is 90°, that is, the heat exchange element 110 is perpendicular to the horizontal plane.

[0096] The heat exchanger 110 includes a heat exchange channel 111, which is configured to circulate a heat exchange medium. The heat exchange medium exchanges heat with the single-phase module, for example, absorbing the heat released by the single-phase module to cool it down. The heat exchange medium can be a refrigerant, CO2, ethylene glycol, or water. It should be noted that the heat exchanger 110 may include a flow channel plate and a heat spreader plate. Exemplarily, the heat exchange channel 111 is formed on the flow channel plate using a stamping process. Then, the flow channel plate is welded to the heat spreader plate using brazing or laser welding to form the heat exchanger 110.

[0097] Please continue to refer to the appendix. Figure 1 The heat exchanger 100 also includes a liquid outlet end and a liquid inlet end, which are spaced apart on the heat exchange element and are respectively connected to the heat exchange channel 111. The liquid outlet end is located above the liquid inlet end, forming a bottom-in, top-out structure. (See attached...) Figure 1 Taking the orientation shown as an example, the liquid inlet is located at the bottom of the heat exchanger 110, and the liquid outlet is located at the top of the heat exchanger 110. It should be understood that both the liquid inlet and the liquid outlet can be formed on the flow channel plate and communicate with each other with the heat exchange flow channel 111.

[0098] When the heat exchange medium flows into the heat exchange channel 111 from the inlet end and exchanges heat with the single-phase module, it is discharged from the heat exchange element 110 through the outlet end, thus forming a bottom-in, top-out flow pattern for the heat exchange medium. In this way, the fluidity of the heat exchange medium can be used to naturally drive the air in the heat exchange channel 111 to flow towards the outlet end and be discharged from the heat exchange element 110, avoiding the accumulation of air inside the heat exchange channel, ensuring the smooth flow of the heat exchange medium in the heat exchange channel 111, improving the uniformity of the heat exchange capacity of the heat exchange element 110, thereby improving the temperature uniformity of the single-phase module, and thus improving the performance and service life of the single-phase module.

[0099] In one possible implementation, the liquid outlet is positioned near the top of the heat exchanger 110; or the liquid outlet is positioned near the top of the heat exchange channel 111. By raising the position of the liquid outlet, making it as close as possible to the top of the heat exchanger 110, the buoyancy effect of the heat exchange medium (such as the decrease in density of the liquid after heating) can be utilized. The top liquid outlet structure is aligned with the natural convection direction, which can assist in driving fluid flow and naturally drive the air in the heat exchange channel 111 to flow towards the liquid outlet and be discharged from the heat exchanger 110, avoiding air accumulation in the heat exchange channel 111 and ensuring the smooth flow of the heat exchange medium in the heat exchange channel 111.

[0100] It should be understood that in this embodiment, the liquid outlet end is adjacent to the top of the heat exchanger 110, or in other words, the liquid outlet end is adjacent to the top of the heat exchange channel 111. Here, the top can be understood as: the area with a certain radius centered on the top surface of the heat exchanger 110 is the top.

[0101] As one possible example, the heat exchanger 110 has a centerline 112 extending along a first direction; wherein the centerline 112 is parallel to the horizontal plane, that is, the first direction is the direction of extension of the heat exchange channel 111. (See attached image) Figure 1 Taking the directions shown as an example, the first direction is the attached direction. Figure 1 In the X direction.

[0102] There is a first vertical distance D1 between the liquid outlet end and the top edge of the heat exchanger 110, and a second vertical distance D2 between the liquid outlet end and the centerline; the first vertical distance D1 is smaller than the second vertical distance D2. The first vertical distance D1 can be as small as possible to minimize the accumulation of air in the heat exchange channel 111, thus preventing the formation of a "dead zone," and to more effectively push and expel air from the heat exchange channel 111 during the upward flow of the heat exchange medium, thereby improving the uniformity of the heat exchange capacity of the heat exchanger 110.

[0103] As another possible example, please refer to [link / reference]. Figure 1 The heat exchange channel 111 includes a top edge, and the vertical distance between the top edge and the liquid outlet is 0mm to 50mm. It should be noted that the vertical distance between the top edge and the liquid outlet should be as small as possible; for example, 1mm, 2mm, or other small values. This ensures that the liquid outlet is as close as possible to the top of the heat exchanger 110, preventing air from accumulating in the heat exchange channel 111 and forming a "dead zone." Furthermore, the upward flow of the heat exchange medium allows for more effective pushing and expelling of air from the heat exchange channel 111, improving the uniformity of the heat exchange capacity of the heat exchanger 110.

[0104] Please refer to the attached document. Figure 2 and attached Figure 3In one possible implementation, the heat exchange channel 111 includes a first heat exchange channel 1111 and a second heat exchange channel 1112 that are interconnected. The first heat exchange channel 1111 is connected to the liquid inlet end, and the second heat exchange channel 1112 is connected to the liquid outlet end.

[0105] In other words, the second heat exchange channel 1112 is disposed adjacent to the top of the heat exchanger 110 and is interconnected with the liquid outlet. Thus, the second heat exchange channel 1112 is positioned above the first heat exchange channel 1111, forming a U-shaped structure. The liquid outlet is connected to the second heat exchange channel 1112, and the liquid inlet is connected to the first heat exchange channel 1111. This extends the length of the heat exchange channel 111, effectively lengthening the flow path of the heat exchange medium, thereby increasing the heat exchange time with the heat exchanger 110 and improving the heat exchange efficiency of the heat exchanger 110.

[0106] In the first heat exchange channel 1111 and the second heat exchange channel 1112, at least the extending direction of the second heat exchange channel 1112 is inclined relative to the centerline of the heat exchange element 110. Thus, the inclined second heat exchange channel 1112 can guide the heat exchange medium, reducing the stagnant area of ​​the heat exchange medium inside the heat exchange element 110, preventing heat accumulation or poor flow, and improving the heat exchange performance of the heat exchange element 110.

[0107] It should be noted that the inclined setting of the second heat exchange channel 1112 relative to the heat exchange element 110 can be understood as being inclined upward relative to the center line of the heat exchange element 110, or it can be understood as being inclined downward relative to the center line of the heat exchange element 110.

[0108] It should be understood that when the heat exchange channel 111 includes a first heat exchange channel 1111 and a second heat exchange channel 1112, the liquid outlet can be located at the top of the second heat exchange channel 1112. Furthermore, the liquid inlet is located at the top of the first heat exchange channel 1111 and adjacent to the bottom of the second heat exchange channel 1112. The liquid inlet and outlet are also located on the same side of the heat exchanger 110, which facilitates the connection of pipelines, reduces welding or sealing joints, and lowers the risk of leakage.

[0109] In one possible implementation, the width of the second heat exchange channel 1112 increases in the direction of its extension towards the liquid outlet. That is, the closer the second heat exchange channel 1112 is to the liquid outlet, the wider it is in the second direction. In other words, the vertical distance between the end of the second heat exchange channel 1112 away from the liquid outlet and the centerline 112 is less than the vertical distance between the end of the second heat exchange channel 1112 towards the liquid outlet and the centerline 112, so that the second heat exchange channel 1112 is inclined upwards. It should be noted that in this embodiment, the increasing trend only needs to ensure that the width of the second heat exchange channel 1112 towards the liquid outlet is greater than the width away from the liquid outlet, and it is not limited to a gradual increase or other forms.

[0110] The first direction intersects with the second direction. The second direction can be understood as the perpendicular direction, i.e., the adjacent direction. Figure 1 and attached Figure 2 In the Z-direction.

[0111] With this configuration, when air flows along the second heat exchange channel 1112, the air is subject to the buoyancy of the heat exchange medium. This buoyancy forms a component force in the inclined direction of the second heat exchange channel 1112, which acts like a traction force, enabling the air to move quickly along the inclined direction of the second heat exchange channel 1112 to form a natural convection state. In this way, the air in the heat exchange medium can move quickly along the second heat exchange channel 111 to the liquid outlet end of the heat exchange element 110, avoiding the accumulation of air at the top of the heat exchange element 110, so as to promote the air to be discharged from the liquid outlet end to the outside of the heat exchange element along with the heat exchange medium, thereby improving the uniformity of the heat exchange capacity of the heat exchange element 110.

[0112] In this application example, along the second direction, the second heat exchange channel 1112 has a first edge and a second edge disposed opposite to each other. The first edge is adjacent to the top of the heat exchanger 110, that is, the first edge is the top edge of the heat exchanger 110.

[0113] There is a second included angle between the first edge and the centerline 112 of the heat exchanger 110. According to the Pythagorean theorem, the smaller the second included angle, the greater the component of buoyancy in the inclined direction of the second heat exchange channel 1112 will be, thereby maximizing the guiding ability of the second heat exchange channel 1112. The second included angle can be less than or equal to 10°. For example, the second included angle is 5°, 6°, 7°, 8°, 9°, or 10°.

[0114] It should be noted that the second heat exchange channel 1112 can be a single channel with a large area, or it can have other structures. For example, the second heat exchange channel 1112 includes multiple interconnected second sub-heat exchange channels 1112a, with at least the second sub-heat exchange channels near the top edge of the heat exchange element 110 being inclined. In this way, by subdividing the second heat exchange channel 1112 into multiple second sub-heat exchange channels 1112a, the internal space of the heat exchange element 110 can be utilized more effectively. This design allows the heat exchange device 100 to provide a longer heat exchange path and a larger heat exchange area while maintaining a compact design, thereby improving the heat exchange performance of the heat exchange device.

[0115] Specifically, the second sub-heat exchange channel 1112a, at least near the top edge of the heat exchanger 110, extends at an angle relative to the centerline 112 of the heat exchanger 110, such that the end of the second sub-heat exchange channel 1112a facing the liquid outlet is higher than the end facing away from the liquid outlet. Alternatively, the width of the second sub-heat exchange channel 1112a, at least near the top edge of the heat exchanger 110, gradually increases in the second direction.

[0116] It should be noted that the extension direction of at least the second sub-heat exchange flow channel 1112a near the top edge of the heat exchanger 110 is inclined relative to the center line 112 of the heat exchanger 110. This can be understood as the extension direction of the plurality of second sub-heat exchange flow channels 1112a near the top edge of the heat exchanger 110 being inclined upward relative to the center line 112 of the heat exchanger 110. It can also be understood that the extension direction of the topmost second sub-heat exchange flow channel 1112a is inclined upward relative to the center line 112 of the heat exchanger 110.

[0117] As an example, the second sub-heat exchange channel 1112a at the top is inclined. In this way, while ensuring that the second heat exchange channel 1112 has guiding capability, the manufacturing process of the heat exchange channel 111 can be simplified and the manufacturing cost of the heat exchange component 110 can be reduced.

[0118] It should be noted that, in the embodiments of this application, not only can the second heat exchange channel 1112 be inclined, but the first heat exchange channel 1111 can also be inclined.

[0119] Please refer to the attached document. Figure 2 and attached Figure 3In one possible implementation, the extension direction of the first heat exchange channel 1111 is inclined relative to the centerline 112 of the heat exchange element 110; wherein, in the first direction and away from the liquid inlet end, the width of the first heat exchange channel 1111 in the second direction tends to increase. It should be noted that the understanding of the increasing trend is the same as the understanding of the second heat exchange channel 1112 having an increasing width in the second direction, and will not be elaborated further in this embodiment.

[0120] In other words, the end of the first heat exchange channel 1111 facing the liquid inlet is lower than the end of the first heat exchange channel 1111 facing away from the liquid inlet. (See attached...) Figure 2 Taking the orientation shown as an example, the first heat exchange channel 1111 faces to the left and is inclined upward. In this way, the inclined surface of the first heat exchange channel 1111 also plays a guiding role, which can drive the air to move quickly along the inclined direction of the first heat exchange channel 1111 to form a natural convection state. In this way, the air in the heat exchange medium can move quickly along the first heat exchange channel 1111 to the second heat exchange channel 1112 of the heat exchange element 110, and then move quickly to the liquid outlet end through the second heat exchange channel 1112, avoiding the accumulation of air at the top of the heat exchange element 110 and improving the uniformity of the heat exchange capacity of the heat exchange element 110.

[0121] It should be noted that the first heat exchange channel 1111 can be a single channel with a large area, or it can have other structures. For example, the first heat exchange channel 1111 includes multiple interconnected first sub-heat exchange channels 1111a, with at least the first sub-heat exchange channel closest to the second heat exchange channel 1112 facing left and inclined upwards. In this way, by subdividing the first heat exchange channel 1111 into multiple first sub-heat exchange channels, the internal space of the heat exchanger 110 can be utilized more effectively. This design allows the heat exchange device 100 to provide a longer heat exchange path and a larger heat exchange area while maintaining a compact design, thereby improving the heat exchange performance of the heat exchange device.

[0122] Among them, the extension direction of the first sub-heat exchange channel 1111a, which is at least close to the second heat exchange channel 1112, is inclined relative to the center line 112 of the heat exchange member 110, so that the end of the first sub-heat exchange channel 1111a away from the liquid inlet end is higher than the end facing the liquid inlet end.

[0123] It is understandable that the extension direction of the plurality of first sub-heat exchange channels 1111a near the second heat exchange channel 1112 is inclined relative to the centerline 112 of the heat exchange element 110, or the extension direction of the topmost first sub-heat exchange channel 1111a is inclined relative to the centerline 112 of the heat exchange element 110. As an example, the topmost first sub-heat exchange channel 1111a is inclined. In this way, while ensuring that the first heat exchange channel 1111 has guiding capability, the manufacturing process of the first heat exchange channel 1111 can be simplified, thereby reducing the manufacturing cost of the heat exchange element 110.

[0124] Please refer to the attached document. Figure 3 In one possible implementation, the heat exchanger 110 is used for heat exchange with the power module 210. That is, the power module 210 is connected to the heat exchanger 110. For example, the power module 210 can be mounted on the heat exchanger 110's heat spreader plate, utilizing the large flat surface of the heat spreader plate to achieve stable and rapid installation of the power module. It should be noted that the installation area of ​​the power module is... Figure 3 The area within the Chinese border.

[0125] The edge of the power module 210 facing the top of the heat exchanger 110 is offset from the first sub-heat exchanger channel 1111a, which is closest to the top edge of the heat exchanger 110 in the second heat exchanger channel 1112. In other words, the first sub-heat exchanger channel 1111a, which is closest to the top edge of the heat exchanger 110 in the second heat exchanger channel 1112, can be used without heat exchange with the power module 210. In this case, the first sub-heat exchanger channel 1111a, which is closest to the top edge of the heat exchanger 110 in the second heat exchanger channel 1112, can serve as both a flow channel for the heat exchange medium and a gas storage chamber. Thus, even if gas accumulates at the top, the gas is stored in the gas storage chamber and cannot affect the flow of the heat exchange medium used to cool the heating area of ​​the power module 210. At the same time, the gas can be quickly discharged along the inclined first sub-heat exchanger channel 1111a under pressure.

[0126] In one possible implementation, the heat exchanger 110 further includes a liquid outlet connector 130, which communicates with a liquid outlet end. The heat exchanger 110 also includes a liquid inlet connector 120, which communicates with a liquid inlet end. The liquid inlet connector 120 and the liquid outlet connector 130 allow the heat exchanger 110 to be easily connected to other components in the system, such as liquid sources, pumps, and piping. This design not only simplifies the installation process but also allows for faster and more convenient operation when the system requires maintenance or component replacement.

[0127] In this embodiment, the heat exchange device further includes a connecting plate 140, which is disposed on the heat exchange element 110. When the heat exchange element 110 includes an outlet connector 130 and an inlet connector 120, the outlet connector 130 and the inlet connector 120 are disposed on the connecting plate 140. In this way, an installation carrier can be provided for the outlet connector 130 and the inlet connector 120, increasing the stability and service life of the connector.

[0128] It should be noted that in this embodiment, the liquid inlet end can be understood as the position where the liquid inlet connector 120 and the heat exchange channel 111 are connected; the liquid outlet end can be understood as the position where the liquid outlet connector 130 and the heat exchange channel 111 are connected.

[0129] In this embodiment, a push-pull handle 141 is also provided on the connecting plate 140. The push-pull handle 141 can be located on the side of the connecting plate 140 away from the liquid inlet connector 120. This facilitates the installation or disassembly of the heat exchange device 100 and other components, thereby improving the installation or disassembly efficiency.

[0130] Please refer to the attached document. Figure 4 To be continued Figure 6 This application also provides a single-phase module 200, which includes a power module 210 and a heat exchange device 100 as described in any of the above embodiments.

[0131] It should be noted that the power module 210 in this embodiment may include an insulated gate bipolar transistor (IGBT). Since the single-phase module 200 includes the heat exchange device 100 described in any of the above embodiments, it has all the structure and beneficial effects of the heat exchange device 100, and will not be described in detail here.

[0132] The power module 210 is connected to the heat exchange element 110 of the heat exchange device 100 and exchanges heat with the heat exchange element 110 to reduce the temperature of the power module 210.

[0133] The heat exchange capacity of the top and bottom of the heat exchange device 100 is well balanced, which can ensure the temperature balance of the top and bottom of the power module 210, thereby effectively avoiding local overheating of the power module 210 and extending the service life of the power module 210.

[0134] Please continue to refer to section 4 and appendix. Figure 5, the number of power modules 210 includes multiple ones, and the multiple power modules 210 form multiple power components. Each power component includes several power modules 210, and the several power modules 210 are connected to each other. Here, the connection to each other can be understood as series connection or parallel connection, and specifically can be freely set according to the performance requirements of the single-phase module 200. In addition, the power component may include the power module 210 within the Figure 4 dashed box.

[0135] In this embodiment, by dividing the multiple power modules 210 into multiple power components, thus, the design of the single-phase module 200 becomes more modular. This modular design enables the single-phase module 200 to flexibly configure the number and type of power components according to actual needs, so as to meet the performance requirements of different application scenarios. In addition, the modular design also facilitates the maintenance and upgrade of the system because a certain power component can be replaced or upgraded individually without making large-scale changes to the entire system.

[0136] It should be noted that the number of power modules 210 in each power component can be two, three or even more. The following embodiments will be described by taking three power modules 210 included in each power component as an example.

[0137] For example, each power component includes a first power module 211, a second power module 212 and a third power module 213. The first power module 211 and the second power module 212 are arranged at intervals along the first direction; the third power module 213 is arranged on one side of the first power module 211 in the second direction. Among them, the first direction and the second direction intersect. Taking the orientation shown in the appendix Figure 4 as an example, the first direction can be the X direction and the second direction is the Z direction.

[0138] It should be understood that there can be multiple choices for the relative position relationship between the third power module 213 and the first power module 211. For example, the third power module 213 is oppositely arranged with the first power module 211 in the second direction so that the first power module 211, the second power module 212 and the third power module 213 form an "L" shape structure. Another example is that the third power module 213 is located between the first power module 211 and the second power module 212 so that the first power module 211, the second power module 212 and the third power module 213 form a "pin" shape structure.

[0139] In this way, the installation space can be utilized more effectively, the setting positions of the first power module 211, the second power module 212 and the third power module 213 can be reasonably set, and further, the space waste can be reduced so that the power component can provide a higher power density within a compact package. In addition, the electrical interference and noise between adjacent power modules 210 can be effectively reduced, and the performance of the single-phase module 200 is improved.

[0140] It should be noted that the first power module 211, the second power module 212, and the third power module 213 can be connected in series, or they can be configured in other ways. For example, the first power module 211 is connected to the third power module 213 via a connecting copper busbar 214, and / or the second power module 212 is connected to the third power module 213 via a connecting copper busbar 214, so that the first power module 211 and the third power module 213 are connected in series, and the second power module 212 and the third power module 213 are also connected in series. This simplifies the electrical connection of each power component, thereby maintaining current uniformity. It should also be noted that the connecting copper busbar 214 connecting the first power module 211 and the third power module 213, and the connecting copper busbar 214 connecting the second power module 212 and the third power module 213, can be the same or different.

[0141] The connecting copper busbars 214 in any two adjacent power components are insulated from each other, or in other words, an insulating element (not shown in the figure) is provided between any two adjacent connecting copper busbars 214. This ensures electrical insulation between the two connecting copper busbars 214, thereby avoiding signal interference between the two power components and improving the performance of the single-phase module 200.

[0142] In one possible implementation, the first power module 211 of each power component is connected to the main cascade busbar (not shown) via a single-phase cascade busbar 220, and / or, the second power module of each power component is connected to the main cascade busbar via a single-phase cascade busbar. This allows each power component to transmit current to the main cascade busbar, and the design of the single-phase cascade busbar 220 helps reduce resistance and inductance, thereby reducing energy loss and improving the efficiency of the single-phase module 200.

[0143] Please refer to the attached document. Figure 7 As one possible implementation of the single-phase laminated busbar 220, the single-phase laminated busbar 220 includes a first part 221 and a second part 222. The first part 221 is connected to the second part 222, and there is an included angle between the first part 221 and the second part 222. For example, the included angle between the first part 221 and the second part 222 is 90°, so that the first part 221 and the second part 222 present an L-shaped structure.

[0144] The second part 222 is connected to each power component, that is, the second part 222 is connected to the first power module 211 and the second power module 212 of each power component, and the first part 221 is connected to the main laminated busbar. The L-shaped structure allows the single-phase laminated busbar 220 to connect the power components and the main laminated busbar in a more direct manner, which helps to reduce the length of the current path, thereby reducing resistance and energy loss and improving the efficiency of current transmission.

[0145] The second part 222 can be fixedly connected to the first power module 211 and the second power module 212 by bolts. For example, the second part 222 is provided with a first connecting piece 223, and the first connecting piece 223 is provided with a first connecting hole 2231.

[0146] Please refer to the attached document. Figure 6 Both the first power module 211 and the second power module 212 are provided with a second connecting piece 215, and the second connecting piece 215 has a second connecting hole 2151. Bolts can pass through the first connecting hole 2231 and the second connecting hole 2151 to connect the first power module 211, the second power module 212 and the first part 221.

[0147] Please continue to refer to the appendix. Figure 7 The single-phase module 200 also includes a first fixed bracket 230, through which the single-phase stacked busbar 220 is connected to the heat exchange element 110 of the heat exchange device 100. This facilitates the installation of the single-phase stacked busbar 220. The single-phase stacked busbar 220 can be fixed to the first fixed bracket 230 with bolts; the first fixed bracket 230 can be connected to the heat exchange element 110 by welding.

[0148] In this embodiment, an absorption capacitor 240 is provided at the connection point between the single-phase stacked busbar 220 and the first power module 211 and / or the second power module 212. Exemplarily, the absorption capacitor 240 may also include a third connecting piece 241, and the third connecting piece 241 is provided with a third connecting hole 2411; bolts can pass through the first connecting hole 2231, the second connecting hole 2151, and the third connecting hole 2411 to connect the first power module 211, the first part 221, and the absorption capacitor 240. The absorption capacitor 240 is used to eliminate voltage spikes caused by stray inductance, preventing damage to the power module 210 and improving the service life of the power module 210.

[0149] In one possible implementation, please refer to the appendix. Figure 5 and attached Figure 9 The third power modules 213 of every two adjacent power components are interconnected by a current sharing copper busbar 250; the two adjacent current sharing copper busbars 250 are interconnected by a busbar support copper busbar 260; the busbar support copper busbar 260 is connected to the AC output copper busbar 270.

[0150] The current sharing copper busbar 250 adopts a completely symmetrical design. For example, the shape of the current sharing copper busbar 250 is an isosceles trapezoid. Thus, the fixed side of the isosceles trapezoidal current sharing copper busbar 250 is bent to form two tab connection terminals 251. One tab connection terminal 251 is connected to the third power module 213 of one power component, and the other tab connection terminal 251 is connected to the third power module 213 of another power component. In this way, the resistance of the two circuits can be guaranteed to be the same, thereby ensuring that the impedance of each circuit is the same when the two power components are connected in parallel. Thus, the current sharing copper busbar 250 can be used to effectively and evenly distribute the large input current to each parallel power module, thereby improving the stability and reliability of the entire single-phase module 200.

[0151] Next, the two adjacent current-sharing copper busbars 250 are connected together using the busbar support copper busbar 260. Finally, the busbar support copper busbar 260 is connected to the AC output copper busbar 270 to achieve stable output of the electrical signal. The AC output copper busbar 270 can be connected to the center of the busbar support copper busbar 260, thus ensuring that the resistance at both ends of the AC output copper busbar 270 is the same, resulting in uniform current flow and stable output.

[0152] Please refer to the attached document. Figure 5 and attached Figure 8 In one possible implementation, the single-phase module 200 further includes a support member 280, which is connected to the heat exchanger 110 of the heat exchange device 100 and is disposed opposite to the single-phase stacked busbar 220; or, the single-phase stacked busbar 220 and the support member 280 are located at the top and bottom of the heat exchanger 110, respectively.

[0153] The current equalization copper busbar 250 and the current busbar support copper busbar 260 are both connected to the support member 280. In this way, the support member 280 can be used to provide support for the current equalization copper busbar 250, the current busbar support copper busbar 260 and the heat exchange device 100, ensuring the stability of the single-phase module 200.

[0154] For example, the current sharing copper bus 250 is connected to the support member 280 via a first connector 281, and the current bus support copper bus 260 is connected to the support member 280 via a second connector 282. The first connector 281 can be an insulating post, cylindrical in shape. The second connector 282 is an insulating plate, Z-shaped.

[0155] It should be noted that the first connector 281 and the second connector 282 can be fixedly connected to the support 280 by means of a press-fit bolt 283.

[0156] As one possible implementation of the support member 280, please refer to the appendix. Figure 8The support member 280 may include a support base plate 284 and a support side plate 285 disposed on the support base plate 284, wherein the support side plate 285 and the support base plate 284 form a structure having a top opening and a side opening.

[0157] The press-fit bolt 283 is provided on the support base plate 284 to facilitate connection with the first connector 281 and the second connector 282.

[0158] In this embodiment, an L-shaped bend is formed at the top of a portion of the supporting side plate 285 to facilitate the connection between the L-shaped bend and the heat exchanger 110, and to provide higher mechanical support for the heat exchanger 110.

[0159] In one possible implementation, the support member 280 includes a first positioning portion 286 for cooperating with a second positioning portion of the power device; and / or, the support member 280 includes a first sliding portion for cooperating with a second sliding portion of the power device.

[0160] In this embodiment, the cooperation between the first positioning part 286 and the second positioning part ensures that the single-phase module 200 can be accurately aligned and fixed in place during installation. This positioning mechanism reduces deviations caused by improper installation and improves the stability and reliability of the entire power device.

[0161] Furthermore, the installation of the single-phase module 200 can be facilitated by the cooperation between the first sliding part and the second sliding part.

[0162] It should be noted that the structure of the first positioning part 286 and the second positioning part can be in various forms, as can the structure of the first sliding part and the second sliding part, as long as the corresponding functions can be achieved.

[0163] In one possible implementation, the single-phase module 200 further includes a drive module 290, which is disposed on the heat exchanger 110 and located on one side of the power module 210; for example, the drive module 290 and the power module 210 are arranged along a first direction. It should be noted that the drive module 290 can be connected to the heat exchanger 110 via a drive support plate 294.

[0164] The driver module 290 is connected to the power module 210 via the adapter board 291 to drive the power module 210. It should be noted that when there are multiple power modules 210, each power module 210 is equipped with an adapter board 291.

[0165] The single-phase module 200 disclosed in this application embodiment also includes a wire harness fixing frame 292. The wire harness fixing frame 292 is located above the multiple power modules 210 and is connected to the heat exchanger 110 through insulating components. The wire harness fixing frame 292 is provided with multiple wire harness insulating frames 293. The wire harness insulating frames are used for wiring and fastening, ensuring electrical clearance, and facilitating the wiring arrangement of the single-phase module 200, thereby improving the overall aesthetics.

[0166] Please refer to the attached document. Figure 10 This application also provides a power device 300, including a support frame 310 and a single-phase module 200 provided in any of the above embodiments. The single-phase module 200 is disposed in the support frame 310, so that the support frame 310 can be used to support the single-phase module 200.

[0167] It should be noted that there are typically three single-phase modules 200, which can be arranged sequentially within the support frame 310. In a three-phase power system, there are usually three phases: A, B, and C. To match this system, this power device is designed with three single-phase modules 200, representing phases A, B, and C respectively, to ensure efficient operation of the power device.

[0168] The support frame 310 includes a second positioning part that cooperates with the first positioning part of the single-phase module 200. One of the first positioning part 286 and the second positioning part can be a positioning hole, and the other can be a positioning post. For example, the first positioning part 286 can be a positioning post, and the second positioning part can be a positioning hole. When the single-phase module 200 is installed onto the support frame 310, the positioning post is inserted into the positioning hole, thus positioning the single-phase module 200. This prevents the single-phase module 200 from sliding out of the support frame 310, improving the safety of the single-phase module 200.

[0169] In addition, a second sliding part is provided on the support frame 310, and the first sliding part of the single-phase module 200 is slidably mounted on the first sliding part. The second sliding part and the first sliding part can be a combination of a slide rail and a slider, or other structures may be used.

[0170] For example, the first sliding part is the lower surface of the support member 280 of the single-phase module 200, and the second sliding part is a sliding pad with a low coefficient of friction. The sliding pad can be made of wear-resistant materials with a low coefficient of friction, such as acetal or polytetrafluoroethylene. Furthermore, the sliding pad can be fixed to the support frame 310 with adhesive.

[0171] This reduces the sliding resistance of the single-phase module 200, decreases wear on the single-phase module 200, and increases the service life of the single-phase module 200.

[0172] To further limit and guide the single-phase module 200, a guide plate 330 is provided on the support frame 310 provided in this embodiment.

[0173] In one possible implementation, the power device 300 further includes a lifting wedge 320, which is disposed on the support frame 310 and located at the bottom of the single-phase module 200. The lifting wedge 320 is used to adjust the height of the single-phase module 200, thereby facilitating the connection between the single-phase cascade busbar 220 and the main cascade busbar.

[0174] It should be understood that the lifting wedge 320 may include a connecting seat 321 and a wedge block 322 connected to the connecting seat 321. The wedge block has an inclined slope, which can adjust the height of the single-phase module 200.

[0175] In this embodiment, the connecting seat 321 can be detachably connected to the support frame 310 by bolts; when the single-phase module 200 needs to be repaired and disassembled, the lifting wedge 320 can be removed, thereby allowing the single-phase module 200 to move with multiple degrees of freedom, which facilitates the disassembly of the single-phase module 200.

[0176] This application also provides an energy storage converter, which includes the power devices described in any of the above embodiments. Therefore, the structure and beneficial effects of the energy storage converter including the power devices will not be elaborated further in this embodiment.

[0177] This application also provides an energy storage station, including an energy storage device and an energy storage converter described in any of the above embodiments, wherein the energy storage converter is electrically connected to the energy storage device. The energy storage device stores electrical energy and releases it when needed to balance power supply and demand. The energy storage converter is electrically connected to the energy storage device and is used for bidirectional conversion of electrical energy between the energy storage device and the power grid (or load).

[0178] Since the energy storage station includes the energy storage converter described in any of the above embodiments, it has the structure and beneficial effects of an energy storage converter, and will not be described in detail here.

[0179] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0180] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0181] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A heat exchange device (100), characterized in that, include: A heat exchanger (110) has a first angle with a horizontal plane, and the heat exchanger (110) includes a heat exchange channel (111) configured to circulate a heat exchange medium. Liquid inlet end, the liquid inlet end is disposed on the heat exchanger (110) and is interconnected with the heat exchange channel (111); The liquid outlet is disposed on the heat exchanger (110) and located above the liquid inlet; wherein the liquid outlet is also connected to the heat exchange channel (111).

2. The heat exchange device (100) according to claim 1, characterized in that, The first included angle is 90°.

3. The heat exchange device (100) according to claim 1, characterized in that, The liquid outlet is disposed near the top of the heat exchanger (110); or, the liquid outlet is disposed near the top of the heat exchange channel (111).

4. The heat exchange device (100) according to claim 3, characterized in that, The heat exchanger (110) has a centerline (112) extending along a first direction; the first direction is the extension direction of the heat exchange channel (111); There is a first vertical distance between the liquid outlet end and the top edge of the heat exchanger (110), and a second vertical distance between the liquid outlet end and the center line (112); the first vertical distance is less than the second vertical distance.

5. The heat exchange device (100) according to any one of claims 1-4, characterized in that, The heat exchange channel (111) includes a first heat exchange channel (1111) and a second heat exchange channel (1112) that are interconnected. The first heat exchange channel (1111) is connected to the liquid inlet end, and the second heat exchange channel (1112) is connected to the liquid outlet end. At least the extension direction of the second heat exchange channel (1112) is inclined relative to the centerline of the heat exchanger (110).

6. The heat exchange device (100) according to claim 5, characterized in that, In the extension direction of the second heat exchange channel (1112) and in the direction pointing to the liquid outlet, the width of the second heat exchange channel (1112) in the second direction tends to increase. The second direction intersects with the first direction.

7. The heat exchange device (100) according to claim 6, characterized in that, Along the second direction, the second heat exchange channel (1112) has a first edge and a second edge disposed opposite to each other, the first edge being adjacent to the top of the heat exchanger (110); The first edge has a second included angle with the center line of the heat exchanger (110), the second included angle being less than or equal to 10°.

8. The heat exchange device (100) according to claim 7, characterized in that, The second heat exchange channel (1112) includes a plurality of interconnected second sub-heat exchange channels (1112a), and at least the second sub-heat exchange channels (1112a) near the top edge of the heat exchange element (110) are inclined relative to the centerline of the heat exchange element (110); And the width of the second sub-heat exchange channel (1112a) at least near the top edge of the heat exchanger (110) gradually increases in the second direction.

9. The heat exchange device (100) according to any one of claims 6-8, characterized in that, The extension direction of the first heat exchange channel (1111) is inclined relative to the centerline (112) of the heat exchange element (110); In the first direction and away from the liquid inlet end, the width of the first heat exchange channel (1111) in the second direction tends to increase.

10. The heat exchange device (100) according to claim 9, characterized in that, The first heat exchange channel (1111) includes a plurality of interconnected first sub-heat exchange channels (1111a), and the width of the first sub-heat exchange channel (1111a) closest to the second heat exchange channel (1112) in the second direction gradually increases along the first direction and away from the liquid inlet end.

11. The heat exchange device (100) according to claim 8, characterized in that, The heat exchanger (110) is used to exchange heat with the power module; the power module is connected to the heat exchanger (110), and the edge of the power module facing the top of the heat exchanger (110) is offset from the second sub-heat exchange channel (1112a) in the second heat exchange channel (1112) that is closest to the top edge of the heat exchanger (110).

12. The heat exchange device (100) according to any one of claims 1-4, characterized in that, The heat exchanger (110) also includes a liquid inlet connector (120) and a liquid outlet connector (130), wherein the liquid inlet connector (120) is connected to the liquid inlet end and the liquid outlet connector (130) is connected to the liquid outlet end.

13. The heat exchange device (100) according to claim 12, characterized in that, The heat exchange device (100) further includes a connecting plate (140), which is disposed on the heat exchange element (110). When the heat exchanger (110) includes a liquid outlet connector (130) and a liquid inlet connector (120), the liquid outlet connector (130) and the liquid inlet connector (120) are disposed on the connecting plate (140).

14. The heat exchange device (100) according to claim 13, characterized in that, The connecting plate (140) is provided with a push-pull handle (141).

15. A single-phase module (200), characterized in that, It includes a power module (210) and a heat exchange device (100) as described in any one of claims 1-14.

16. The single-phase module (200) according to claim 15, characterized in that, The power module (210) is connected to the heat exchange element (110) of the heat exchange device (100) and exchanges heat with the heat exchange element (110).

17. The single-phase module (200) according to claim 16, characterized in that, The number of power modules (210) includes a plurality of power modules (210), and the plurality of power modules (210) form a plurality of power components; wherein each power component includes a plurality of power modules (210) interconnected with each other.

18. The single-phase module (200) according to claim 17, characterized in that, Each of the power components includes a first power module (211), a second power module (212), and a third power module (213), wherein the first power module (211) and the second power module (212) are arranged at intervals along a first direction; The third power module (213) is disposed on one side of the first power module (211) in the second direction; wherein the first direction and the second direction intersect.

19. The single-phase module (200) according to claim 18, characterized in that, The third power module (213) is also located between the first power module (211) and the second power module (212).

20. The single-phase module (200) according to claim 19, characterized in that, The first power module (211) is connected to the third power module (213) via a connecting copper busbar (214); and / or, the second power module (212) is connected to the third power module (213) via a connecting copper busbar (214); The connecting copper busbars (214) in any two adjacent power components are insulated from each other.

21. The single-phase module (200) according to any one of claims 17-20, characterized in that, The first power module (211) of each power component is connected to the main stacked busbar via a single-phase stacked busbar (220); and / or, the second power module (212) of each power component is connected to the main stacked busbar via a single-phase stacked busbar (220).

22. The single-phase module (200) according to claim 21, characterized in that, The single-phase stacked busbar (220) includes a first part (221) and a second part (222), the first part (221) is connected to the second part, and there is an included angle between the first part (221) and the second part (222); The second part (222) is connected to each of the power components, and the first part (221) is connected to the main stack busbar.

23. The single-phase module (200) according to claim 22, characterized in that, It also includes a first fixed bracket (230), through which the single-phase stacked busbar (220) is connected to the heat exchange element (110) of the heat exchange device (100).

24. The single-phase module (200) according to claim 23, characterized in that, An absorption capacitor (240) is provided at the connection between the single-phase stacked busbar (220) and the first power module (211) and / or the second power module (212).

25. The single-phase module (200) according to claim 24, characterized in that, The third power modules (213) of each pair of adjacent power components are interconnected via a current-sharing copper busbar (250); Two adjacent current-equalizing copper busbars (250) are interconnected via a current-supporting copper busbar (260); The busbar support copper bus (260) is connected to the AC output copper bus (270).

26. The single-phase module (200) according to claim 25, characterized in that, The single-phase module (200) also includes a support member (280), which is connected to the heat exchanger (110) of the heat exchange device (100) and is disposed opposite to the single-phase stacked busbar (220); The current equalization copper bus (250) and the current bus support copper bus (260) are both connected to the support member (280).

27. The single-phase module (200) according to claim 26, characterized in that, The support member (280) includes a first positioning part (286) for cooperating with a second positioning part of the power device; and / or, the support member (280) includes a first sliding part for cooperating with a second sliding part of the power device.

28. The single-phase module (200) according to any one of claims 16-20, characterized in that, The single-phase module also includes a drive module (290), which is disposed on the heat exchanger (110) and located on one side of the power module (210); The drive module (290) is connected to the power module (210) via an adapter board (291).

29. A power device (300), characterized in that, It includes a support frame (310) and a single-phase module (200) as described in any one of claims 16-28, the single-phase module (200) being disposed in the support frame (310).

30. The power device (300) according to claim 29, characterized in that, A second positioning part is provided on the support frame (310), and the second positioning part cooperates with the first positioning part (286) of the single-phase module (200); And / or, the support frame (310) is provided with a second sliding part, and the first sliding part of the single-phase module (200) is slidably disposed on the second sliding part.

31. The power device (300) according to claim 30, characterized in that, The first positioning part (286) is a positioning post, and the second positioning part is a positioning hole; The first sliding part is the lower surface of the support member (280) of the single-phase module (200), and the second sliding part is a sliding pad.

32. The power device (300) according to claim 30 or 31, characterized in that, The power device (300) also includes a lifting wedge (320), which is disposed on the support frame (310) and located at the bottom of the single-phase module (200).

33. An energy storage converter, characterized in that, Includes the power device (300) according to any one of claims 29-32.

34. An energy storage station, characterized in that, It includes an energy storage device and the energy storage converter as described in claim 33, wherein the energy storage converter is electrically connected to the energy storage device.

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