Water-cooling rectifying device

Abstract

The utility model discloses a water-cooling rectifying device which comprises a water-cooling plate, 3N diode assemblies, a direct-current copper bar and an alternating-current copper bar, and N is a positive integer larger than 1. The water cooling plate is arranged on the first side of the 3N diode assemblies and is used for carrying out water cooling heat dissipation on the 3N diode assemblies; the direct current copper bar and the alternating current copper bar are arranged on the second side of the 3N diode assemblies, the direct current copper bar and the alternating current copper bar are electrically and fixedly connected with the 3N diode assemblies respectively, and the direct current copper bar and the alternating current copper bar are further fixedly connected with the water cooling plate in an insulating mode. The rectifier device is small in size and good in heat dissipation effect, the rectification power can be expanded, and the applicability and practicability of the rectifier device are improved.

Description

Technical Field

[0001] This application relates to the technical field of electrical equipment, and more specifically, to a water-cooled rectifier device. Background Technology

[0002] With the development of power electronic equipment, the demand for high-power rectifier modules in industrial applications such as data centers and electric vehicle charging stations is increasing. Traditional single-phase or three-phase rectifier modules often use multiple modules in parallel to handle high power requirements. For example, a common six-pulse rectifier can only be used in a twelve-pulse rectification scenario by connecting two six-pulse rectifier modules in parallel. This results in a larger size and increased cost of the rectifier section of the frequency converter drive system, putting the economy and compactness of the entire solution to a test.

[0003] Furthermore, in the variable frequency drive industry, cabinets and rectifier modules typically employ forced air cooling, achieving cooling by adding air-cooled radiators or fans. This structure usually has low power density and generates significant noise due to the multiple fans. In reality, with increasing demands for higher power density and smaller size, forced air cooling systems are unsuitable for various scenarios, resulting in low applicability and practicality.

[0004] Regarding the aforementioned technical methods, traditional rectifier modules suffer from drawbacks such as large size after power expansion and low applicability and practicality. Utility Model Content

[0005] This application provides a water-cooled rectifier device that can expand the rectified power, has a small size and good heat dissipation effect, and is more applicable and practical.

[0006] The water-cooled rectifier device provided in this application adopts the following technical solution:

[0007] A water-cooled rectifier device, comprising:

[0008] 3N diode components; where N is a positive integer greater than 1;

[0009] A water-cooled plate is disposed on the first side of the 3N diode assemblies and is used to perform water-cooling heat dissipation on the 3N diode assemblies;

[0010] DC and AC copper busbars are disposed on the second side of the 3N diode assemblies. The DC and AC copper busbars are electrically connected and fixed to the 3N diode assemblies, and are also insulated and fixed to the water-cooled plate.

[0011] Optionally, the DC copper busbar is led out along the first end of the 3N diode assembly, and the DC copper busbar is connected and fixed to the water-cooled plate through a first insulating support assembly; the AC copper busbar is led out along the second end of the 3N diode assembly, and the AC copper busbar is connected and fixed to the water-cooled plate through a second insulating support assembly.

[0012] Optionally, the first insulating support assembly includes a first insulating member and a first supporting member connected to each other, the first insulating member being connected to the DC copper busbar and the first supporting member being connected to the water-cooled plate; the second insulating support assembly includes a second insulating member and a second supporting member connected to each other, the second insulating member being connected to the AC copper busbar and the second supporting member being connected to the water-cooled plate.

[0013] Optionally, the DC copper busbar includes a DC positive copper busbar and a DC negative copper busbar arranged side by side, and an absorption plate is connected between the DC positive copper busbar and the AC copper busbar.

[0014] Optionally, the DC positive copper busbar is electrically connected to the absorption plate via a press-fit nut post, and the AC copper busbar is electrically connected to the absorption plate via a power-taking copper busbar; a third insulating component is provided between the DC positive copper busbar and the DC negative copper busbar.

[0015] Optionally, it also includes an absorption capacitor electrically connected to the DC positive copper busbar and the DC negative copper busbar, the absorption capacitor being covered with a fourth insulating element.

[0016] Optionally, the water-cooled plate is provided with a cold water channel, a cold water inlet and a cold water outlet. The cold water channel is located inside the water-cooled plate, the cold water inlet and the cold water outlet are located on the first side of the water-cooled plate, and the 3N diode assemblies are located on the second side of the water-cooled plate.

[0017] Optionally, a handle is provided on the second side of the water-cooled plate, and mounting holes and / or lifting components are also provided on the water-cooled plate, wherein the mounting holes and the lifting components are arranged to avoid the cold water channel; the distance between the end face of the transport bracket away from the water-cooled plate and the first side of the water-cooled plate is greater than the distance between the end face of the cold water outlet away from the water-cooled plate and the first side of the water-cooled plate.

[0018] Optionally, the AC copper busbar includes a first-phase AC copper busbar, a second-phase AC copper busbar, and a third-phase AC copper busbar arranged side by side, with the output terminals of the first-phase AC copper busbar, the second-phase AC copper busbar, and the third-phase AC copper busbar arranged in a staggered manner.

[0019] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0020] This invention employs a layout of 3N diode assemblies in conjunction with DC and AC copper busbars to convert AC power input from the AC busbars into DC power, which is then output through the DC busbars. During this process, a water-cooled plate positioned on the first side of the diode assemblies dissipates heat from the 3N diode assemblies. The water-cooled plate is positioned close to the 3N diode assemblies, improving heat dissipation and reducing the size and footprint of the rectifier device, facilitating flexible installation within the cabinet. Furthermore, this invention enables the expansion of rectified power, enhancing the applicability and practicality of the rectifier device. Attached Figure Description

[0021] 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 recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a water-cooled rectifier device disclosed in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of a water-cooled rectifier device disclosed in an embodiment of this application from another perspective;

[0024] Figure 3 This is a schematic diagram of the structure of a water-cooled rectifier device with a prominent transport bracket, as disclosed in an embodiment of this application.

[0025] Figure 4 This is a schematic diagram of the structure of a water-cooled rectifier device with a prominent three-phase AC input copper busbar, as disclosed in an embodiment of this application.

[0026] Figure 5 For is Figure 4 A magnified view of a portion at point A.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Water-cooled plate; 11. Cold water channel; 12. Cold water inlet; 13. Cold water outlet; 14. Transport bracket; 15. Handle; 16. Mounting hole; 17. Lifting component; 2. Diode assembly; 3. DC copper busbar; 31. DC positive copper busbar; 32. DC negative copper busbar; 4. AC copper busbar; 41. First phase AC copper busbar; 42. Second phase AC copper busbar; 43. Third phase AC copper busbar; 44. Power supply copper busbar; 5. First insulation support assembly; 51. First insulation component; 52. First support component; 6. Second insulation support assembly; 61. Second insulation component; 62. Second support component; 7. Absorption plate; 71. Third insulation component; 8. Absorption capacitor; 81. Fourth insulation component. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] This application provides a water-cooled rectifier device that can expand the rectified power, has a small size and good heat dissipation effect, and improves the applicability and practicality of the rectifier device.

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present 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 the present application, and not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0032] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] Please see Figure 1 and Figure 2 This is one embodiment of the water-cooled rectifier device in this application, including a water-cooled plate 1, 3N diode assemblies 2, a DC copper busbar 3, and an AC copper busbar 4.

[0034] A water-cooled plate 1 is disposed on the first side of 3N diode assemblies 2 for water cooling of the 3N diode assemblies. DC and AC copper busbars are disposed on the second side of the 3N diode assemblies, and are electrically connected and fixed to the 3N diode assemblies respectively. The DC and AC copper busbars are also insulated and fixed to the water-cooled plate 1. This arrangement of 3N diode assemblies with DC and AC copper busbars converts the AC input to DC, which is then output through the DC busbars. During this process, the water-cooled plate 1, disposed on the first side of the diode assemblies, dissipates heat from the 3N diode assemblies. The close proximity of the water-cooled plate 1 to the 3N diode assemblies enhances heat dissipation and reduces the size and footprint of the rectifier, facilitating flexible installation within the cabinet. Furthermore, this application enables the expansion of rectified power, improving the applicability and practicality of the rectifier.

[0035] The water-cooled plate 1 is rectangular in shape. Inside the water-cooled plate 1, there is a cold water channel 11 (not shown in the figure), a cold water inlet 12, and a cold water outlet 13. The cold water channel 11 is located inside the water-cooled plate 1. The cold water inlet 12 and the cold water outlet 13 are used to connect with external water supply equipment. The cold water inlet and the cold water outlet are located on the first side of the water-cooled plate 1. The cold water inlet 12 and the cold water outlet 13 are spaced apart along the length of the water-cooled plate 1. The position of the cold water inlet 12 is lower than the position of the cold water outlet 13.

[0036] 3N diode assemblies 2 are disposed on the second side of the water-cooled plate 1, facing away from the cold water inlet 12 and the cold water outlet 13. Cooling water enters the cold water channel 11 through the cold water inlet 12, and the liquid in the cold water channel 11 exchanges heat with the diode assemblies 2. After heat exchange, the cooling water flows out through the cold water outlet 13, thereby quickly dissipating heat and cooling the diode assemblies 2. Compared with air cooling, the water-cooled plate 1 used in this application has better heat dissipation effect and lower noise.

[0037] In this embodiment, the first and second sides of the water-cooled plate 1 are arranged opposite to each other. It can be understood that the cold water inlet 12 and the cold water outlet 13 are located on the same side of the water-cooled plate 1, which facilitates the laying of external water supply pipes and optimizes the water flow path. Secondly, the cold water inlet 12 and the cold water outlet 13 arranged on the same side reduce the installation area occupied by the water-cooled plate 1, so that the second side of the water-cooled plate 1 can be used entirely for installing the diode assembly 2. This arrangement can further reduce the volume of the rectifier device in terms of thickness.

[0038] Please see Figure 2 and Figure 3Since the cold water inlet 12, the cold water outlet 13 and the diode assembly 2 are arranged on different sides of the water-cooled plate 1, in order to protect the cold water inlet 12 and the cold water outlet 13 during handling and installation, a detachable transport bracket 18 is also provided on the first side of the water-cooled plate 1. The transport bracket 18 is located on the same side of the water-cooled plate 1 as the cold water inlet 12 and the cold water outlet 13. The cold water inlet 12 and the cold water outlet 13 have the same structure. The distance between the end face of the transport bracket 18 away from the first side of the water-cooled plate 1 and the water-cooled plate 1 is greater than the distance between the end face of the cold water outlet 13 away from the first side of the water-cooled plate 1 and the water-cooled plate 1. In this embodiment, two transport brackets 18 are provided, respectively installed at both ends of the water-cooled plate 1 along its length. Since the distance between the end face of the transport bracket 18 furthest from the first side of the water-cooled plate 1 and the water-cooled plate 1 is greater than the distance between the end face of the cold water outlet 13 furthest from the first side of the water-cooled plate 1 and the water-cooled plate 1, the transport bracket 18 preferentially contacts external objects during transport and handling of the rectifier, preventing the cold water inlet 12 and cold water outlet 13 from contacting external objects and thus protecting them. Simultaneously, the transport bracket 18 is positioned to avoid the cold water channel 11, protecting it from impact damage. Furthermore, the transport bracket 18 provides a handling contact point, reducing damage to the rectifier. Before the rectifier is officially installed in the designated position, the transport bracket 18 needs to be removed in advance. The transport bracket 18 is detachably connected to the water-cooled plate 1, facilitating quick assembly and disassembly.

[0039] Please continue reading. Figure 2 To facilitate the installation of the rectifier, a handle 15 is provided on the second side of the water-cooled plate 1, and mounting holes 16 and / or lifting components 17 are also provided on the water-cooled plate 1. The mounting holes 16 and lifting components 17 are positioned away from the cold water channel 11. In this embodiment, two handles 15 and two lifting components 17 are provided. The two handles 15 are respectively located at both ends of the water-cooled plate 1 for handling the rectifier; the two lifting components 17 are respectively located at the upper end of the water-cooled plate 1, and the rectifier is installed by using a traction rope to pass through the lifting components 17; four mounting holes 16 are provided, and the four mounting holes 16 are respectively located at the four corners of the water-cooled plate 1. Since the rectifier is relatively heavy, after the rectifier is installed in the designated position, it can be easily installed and disassembled through the mounting holes 16 and the lifting components 17.

[0040] Please see Figure 2 and Figure 4The rectifier bridge 21 consists of 3N diode components 2, where N is a positive integer greater than 1. This means the 3N rectifier bridges 21 can have six, nine, twelve, or more diode components 2, and so on, with the number of diode components 2 selected according to actual needs. In this embodiment, the first end of the 3N diode components 2 is the AC input end, and the second end is the DC output end. A DC copper busbar 3 is led out from the first end of the 3N diode components 2 and is connected and fixed to the water-cooled plate 1 via a first insulating support component 5. An AC copper busbar 4 is led out from the second end of the 3N diode components 2 and is connected and fixed to the water-cooled plate 1 via a second insulating support component 6.

[0041] Please see Figure 3 and Figure 4 The first insulating support assembly 5 includes a first insulating member 51 and a first support member 52 connected to each other. The length direction of the first insulating member 51 and the first support member 52 is the same as the length direction of the water-cooled plate 1. The first insulating member 51 is connected to the DC copper busbar 3, and the first support member 52 is connected to the water-cooled plate 1. The first support member 52 is disposed on the second side of the water-cooled plate 1. Specifically, the DC copper busbar 3 includes a DC positive copper busbar 31 and a DC negative copper busbar 32 arranged side by side. The DC negative copper busbar 32 is fixed to the left end of the first insulating member 51, and the DC positive copper busbar 23 is fixed to the right end of the first insulating member 51. In this embodiment, the first insulating member 51 is composed of two insulating beams. The DC positive copper busbar 31 and the DC negative copper busbar 32 are respectively fixedly installed on the sides of the two insulating beams away from the water-cooled plate 1. The distance between the DC negative copper busbar 32 and the water-cooled plate 1 is smaller than the distance between the DC positive copper busbar 31 and the water-cooled plate 1. The DC positive copper busbar 31 and the DC negative copper busbar 32 are staggered, which can reduce the risk of local overheating caused by current concentration, ensure smooth current flow and balanced load, and help save space and make the cable line more orderly, which is convenient for maintenance and expansion.

[0042] Furthermore, electrical connection points are led out from the DC positive copper busbar 31 and the DC negative copper busbar 32. These electrical connection points are located in the top area of ​​the DC positive copper busbar 31 and the top area of ​​the DC negative copper busbar 32. Four sets of square neck bolt assemblies are pre-installed in the top areas of the DC positive copper busbar 31 and the top areas of the DC negative copper busbar 32 for convenient electrical connection with other modules.

[0043] Please continue reading. Figure 4 and Figure 5The AC copper busbar 4 is led out from the second end of the 3N diode assembly 2, and the AC copper busbar 4 is connected and fixed to the water-cooled plate 1 by the second insulating support assembly 6. The second insulating support assembly 6 includes a second insulating member 61 and a second support member 62 connected to each other. The length direction of the second insulating member 61 and the second support member 62 is the same as the length direction of the water-cooled plate 1. The second insulating member 61 is connected to the AC copper busbar 4, and the second support member 62 is connected to the water-cooled plate 1. The second support member 62 is fixedly connected to the second side of the water-cooled plate 1. One side of the second insulating member 61 is fixedly connected to the second support member 62, and the other side is fixedly connected to the AC copper busbar 4 by bolts, which strengthens the fixation and strength of the AC copper busbar 4 and enhances the installation stability of the AC copper busbar 4.

[0044] The AC busbar 4 includes a first-phase AC busbar 41, a second-phase AC busbar 42, and a third-phase AC busbar 43 arranged side-by-side, with their output terminals staggered. In this embodiment, the first-phase AC busbar 41 is an R-phase AC busbar, the second-phase AC busbar 42 is an S-phase AC busbar, and the third-phase AC busbar 43 is a T-phase AC busbar. The first-phase AC busbar 41, the second-phase AC busbar 42, and the third-phase AC busbar 43 are spaced apart along the length of the water-cooled plate 1, and are staggered along the width of the water-cooled plate 1. Taking N=2 as an example, the system consists of six diode components 2 and two AC busbars 4. The two AC busbars 4 include two R-phase AC busbars, two S-phase AC busbars, and two T-phase AC busbars. The two R-phase AC busbars, two S-phase AC busbars, and two T-phase AC busbars are respectively located at the second end of the six diode components 2 and electrically connected to the diode components 2. Each phase AC busbar is connected to the diode components 2, resulting in twelve-pulse rectification. By short-circuiting the AC busbars of the same phase with conductive components, six-pulse rectification can be achieved. This rectifier can simultaneously support both six-pulse and twelve-pulse rectification, thus expanding the rectified power. Compared to the parallel connection of multiple modules, this application reduces the footprint of the rectifier, decreases its size, and lowers the cost. Along the length of the water-cooled plate 1, two R-phase AC copper busbars are arranged adjacent to each other, two S-phase AC copper busbars are arranged adjacent to each other, and two T-phase AC copper busbars are arranged adjacent to each other. Along the width of the water-cooled plate 1, the output ends of the two R-phase AC copper busbars and the ends of the two T-phase AC copper busbars are located on the same plane, while the ends of the two S-phase AC copper busbars and the ends of the two T-phase AC copper busbars are not located on the same plane. This staggered layout is designed to simplify the wiring process, balance the load, reduce electromagnetic interference, and improve circuit stability.

[0045] Please continue reading. Figure 4An absorption plate 7 is connected between the DC positive copper busbar 31 and the AC copper busbar 4. The absorption plate 7 is an RC absorption plate, designed to purify the current. In some embodiments, the absorption plate 7 can be a structure composed of multiple RC absorption plates arranged side by side. In this embodiment, the absorption plate 7 is preferably a single, complete plate structure. The absorption plate 7 is located on the side of the DC positive copper busbar 31 away from the water-cooled plate 1, parallel to the water-cooled plate 1, and its length direction is the same as that of the water-cooled plate 1. The DC positive copper busbar 31 is electrically connected to the absorption plate 7 via a press-fit nut post, and the AC copper busbar 4 is electrically connected to the absorption plate 7 via a power-taking copper busbar 44. It is understood that one side of the absorption plate 7 is electrically connected to the DC positive copper busbar 31, and the other side is electrically connected to the power-taking copper busbar 44. AC current is input from the AC copper busbar 4, connected to the absorption plate 7 via the power-taking copper busbar 44, purifying the DC current through the absorption plate 7 before flowing to the DC positive copper busbar 31.

[0046] Furthermore, a third insulating element 71 is provided between the DC positive copper busbar 31 and the DC negative copper busbar 32. The third insulating element 71 is fixedly disposed on the DC positive copper busbar 31 to prevent the DC positive copper busbar 31 from affecting the components on the absorption plate 7. It can be understood that the third insulating element 71 is a material with high resistivity. By setting the third insulating element 71, physical isolation is achieved between the DC positive copper busbar 31 and the absorption plate 7, effectively preventing current from flowing from the DC positive copper busbar 31 to the absorption plate 7, thereby meeting electrical safety specifications, ensuring the safe operation of the rectifier device, and guaranteeing the reliability and safety of the entire circuit system.

[0047] Alternating current (AC) is input from AC busbar 4, rectified by diode assembly 2 to convert AC to DC, and then output through DC positive busbar 31 and DC negative busbar 32. After rectification by diode assembly 2, a high level of stray inductance is generated on DC positive busbar 31 and DC negative busbar 32, resulting in a high peak voltage Vce. To eliminate this stray inductance, the rectifier device includes an absorption capacitor 8, which is electrically connected to DC positive busbar 31 and DC negative busbar 32. The absorption capacitor 8 is covered by a fourth insulating element 81. The absorption capacitor 8 is used to absorb the stray inductance on DC positive busbar 31 and DC negative busbar 32, eliminating the peak voltage. In this embodiment, two absorption capacitors 8 are provided, one on the left and one on the right side of diode assembly 2, respectively, to optimize the overall layout.

[0048] Please see Figure 2 The rectifier also includes a temperature control switch 9, which is disposed on the water-cooled plate 1 and electrically connected to the diode assembly 2. The temperature control switch 9 is used to monitor the operating temperature of the diode assembly 2 and prevent damage to the diode assembly 2 due to overheating, thereby protecting the diode assembly 2.

[0049] The above-described 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A water-cooled rectifier device, characterized in that, include: 3N diode components; where N is a positive integer greater than 1; A water-cooled plate is disposed on the first side of the 3N diode assemblies and is used to perform water-cooling heat dissipation on the 3N diode assemblies; DC and AC copper busbars are disposed on the second side of the 3N diode assemblies. The DC and AC copper busbars are electrically connected and fixed to the 3N diode assemblies, and are also insulated and fixed to the water-cooled plate.

2. The water-cooled rectifier device according to claim 1, characterized in that, The DC copper busbar is led out from the first end of the 3N diode assembly, and the DC copper busbar is connected and fixed to the water-cooled plate through a first insulating support assembly; the AC copper busbar is led out from the second end of the 3N diode assembly, and the AC copper busbar is connected and fixed to the water-cooled plate through a second insulating support assembly.

3. The water-cooled rectifier device according to claim 2, characterized in that, The first insulating support assembly includes a first insulating member and a first supporting member connected to each other. The first insulating member is connected to the DC copper busbar, and the first supporting member is connected to the water-cooled plate. The second insulating support assembly includes a second insulating member and a second supporting member connected to each other. The second insulating member is connected to the AC copper busbar, and the second supporting member is connected to the water-cooled plate.

4. The water-cooled rectifier device according to claim 2, characterized in that, The DC copper busbar includes a DC positive copper busbar and a DC negative copper busbar arranged side by side, and an absorption plate is connected between the DC positive copper busbar and the AC copper busbar.

5. The water-cooled rectifier device according to claim 4, characterized in that, The DC positive copper busbar is electrically connected to the absorption plate via a press-fit nut post, and the AC copper busbar is electrically connected to the absorption plate via a power-taking copper busbar; a third insulating component is provided between the DC positive copper busbar and the DC negative copper busbar.

6. The water-cooled rectifier device according to claim 4, characterized in that, It also includes an absorption capacitor electrically connected to the DC positive copper busbar and the DC negative copper busbar, the absorption capacitor being covered with a fourth insulating element.

7. The water-cooled rectifier device according to claim 1, characterized in that, The water-cooled plate is provided with a cold water channel, a cold water inlet and a cold water outlet. The cold water channel is located inside the water-cooled plate, the cold water inlet and the cold water outlet are located on the first side of the water-cooled plate, and the 3N diode assemblies are located on the second side of the water-cooled plate.

8. The water-cooled rectifier device according to claim 7, characterized in that, The second side of the water-cooled plate is also provided with a handle, and the water-cooled plate is also provided with mounting holes and / or lifting components, the mounting holes and the lifting components being arranged to avoid the cold water channel.

9. The water-cooled rectifier device according to claim 7, characterized in that, The first side of the water-cooled plate is also provided with a detachable transport bracket, which is arranged to avoid the cold water channel; the distance between the end face of the transport bracket away from the water-cooled plate and the first side of the water-cooled plate is greater than the distance between the end face of the cold water outlet away from the water-cooled plate and the first side of the water-cooled plate.

10. The water-cooled rectifier device according to claim 1, characterized in that, The AC copper busbar includes a first-phase AC copper busbar, a second-phase AC copper busbar, and a third-phase AC copper busbar arranged side by side, with the output terminals of the first-phase AC copper busbar, the second-phase AC copper busbar, and the third-phase AC copper busbar arranged in a staggered manner.

Images