Water-cooled plate external liquid-cooled energy storage converter structure

Abstract

The utility model discloses a water -cooling plate external liquid -cooling energy storage converter structure, including cavity cover, cavity, bottom plate subassembly, water -cooling plate, IGBT module, electric reactor and sealing strip, water -cooling plate is external in cavity outside, and the anti -condensation performance is strong, so that the device in the cavity can avoid the circuit safety distance that condensation led to becomes small, short circuit occurs, the corrosion of device condition, has improved the reliability of converter greatly, has good sealing performance, can effectively block the water or dust of cavity outside through IGBT installation opening and electric reactor installation opening and enter the cavity, prevent dust or water from entering the cavity after causing the device in the cavity to break down failure because of the influence of dust increase or water, thereby improved the reliability of complete machine.

Description

Technical Field

[0001] This utility model relates to the technical field of energy storage converters, and in particular to the technical field of a water-cooled plate external liquid-cooled energy storage converter structure. Background Technology

[0002] Compared to air-cooled energy storage converters, liquid-cooled energy storage converters have unique advantages in terms of heat dissipation efficiency, power density, environmental adaptability, and long-term economic efficiency. Therefore, liquid-cooled energy storage converters are receiving increasing attention. Among liquid-cooled converters, IGBTs (Insulated Gate Bipolar Transistors) are particularly important. The IGBT (Insulated Gate Bipolar Transistor) module and reactor are key power devices. Due to their high heat generation, they need to be mounted on a water-cooled plate for heat dissipation. IGBT modules and reactors are usually installed inside the converter cavity, which means the water-cooled plate is also installed inside the converter cavity, as in the patent "Energy Storage Converter and Energy Storage System" (patent number 202510645504.7). In practical applications, when the system is cold-started or the load suddenly drops, the liquid supply temperature of the liquid cooling system is unstable and usually quite low. The surface temperature of the water-cooled plate is very likely to be lower than the dew point temperature of the ambient temperature inside the converter cavity, causing liquid water to condense on the water-cooled plate. This leads to a reduction in the safe distance of the circuit inside the converter, resulting in short circuits and also increasing the risk of device corrosion. Therefore, how to design an effective anti-condensation liquid-cooled energy storage converter is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art and propose a water-cooled plate external liquid-cooled energy storage converter structure, which can avoid the reduction of circuit safety distance, short circuit and device corrosion caused by condensation in the device inside the cavity. It has strong anti-condensation performance, good structural sealing, and improves the reliability of the converter.

[0004] To achieve the above objectives, this utility model proposes a water-cooled plate external liquid-cooled energy storage converter structure, including a cavity cover plate, a cavity, a base plate assembly, a water-cooled plate, IGBT modules, a reactor, and a sealing strip. The cavity is topped with a cavity cover plate, and several IGBT modules are installed inside the cavity. IGBT mounting openings are provided at the bottom of the cavity corresponding to the IGBT module mounting positions. A reactor is installed inside the cavity, and a reactor mounting opening is provided at the bottom of the cavity corresponding to the reactor mounting positions. Several water-cooled plate connection holes are evenly distributed around the IGBT mounting opening and the reactor mounting opening. Several first mounting holes are evenly distributed at the bottom edge of the cavity. A base plate assembly is installed at the bottom of the cavity. The base plate assembly includes a first adapter plate, a second adapter plate, a third adapter plate, a water inlet positioning port, a water outlet positioning port, a cavity connecting nut, and a base plate. The base plate is provided with a water inlet positioning port and a sealing strip. The water outlet pipe positioning port is provided. Several cavity connecting nuts are evenly arranged on the four sides of the base plate. The cavity connecting nuts are fixedly connected to the first mounting hole by screws. A first adapter plate, a second adapter plate, and a third adapter plate are installed on the base plate by screws. A water-cooled plate is installed on the base plate assembly. The water-cooled plate includes a water outlet pipe, a water-cooled plate fixing hole, a water inlet pipe, a limiting groove, and a base plate fixing hole. Several water-cooled plate fixing holes are provided on the sides of the water-cooled plate. The water-cooled plate fixing holes on three sides are fixedly connected to the first adapter plate, the second adapter plate, and the third adapter plate by screws, respectively. A water outlet pipe and a water inlet pipe are connected on the water-cooled plate. The water inlet pipe is positioned in the water inlet pipe positioning port, and the water outlet pipe is positioned in the water outlet pipe positioning port. A limiting groove is provided on the water-cooled plate, and a sealing strip is installed in the limiting groove. Several base plate fixing holes are provided inside the limiting groove, and the base plate fixing holes are fixedly connected to the water-cooled plate connecting holes by screws.

[0005] Preferably, the opening size of the IGBT mounting opening is larger than the mounting bottom surface size of the IGBT module, and the IGBT module passes through the IGBT mounting opening and is connected to the water-cooling plate by screws. The opening size of the reactor mounting opening is larger than the mounting bottom surface size of the reactor, and the reactor passes through the reactor mounting opening and is connected to the water-cooling plate by screws.

[0006] Preferably, the sealing strip is adhered and disposed in the limiting groove, and the sealing strip is sandwiched between the water-cooling plate and the bottom of the cavity. The IGBT mounting opening and the reactor mounting opening at the bottom of the cavity are isolated and sealed from the outside by the sealing strip.

[0007] Preferably, there are 3 IGBT modules, 10 first mounting holes are evenly arranged at the bottom edge of the cavity, there are 10 cavity connecting nuts, there are 26 water-cooled plate connecting holes, and 26 substrate fixing holes are provided inside the limiting groove.

[0008] Preferably, the water-cooled plate is a high thermal conductivity metal plate, and water-cooled cavities are uniformly arranged inside the water-cooled plate, which are respectively connected to the water outlet pipe and the water inlet pipe.

[0009] Preferably, the first adapter plate, the second adapter plate, the third adapter plate, and the base plate are all sheet metal parts, and the water inlet pipe positioning port and the water outlet pipe positioning port are located on the same side of the base plate.

[0010] Preferably, the cavity cover is fixed to the top of the cavity with screws.

[0011] The beneficial effects of this utility model are as follows: By combining the cavity cover plate, cavity, base plate assembly, water-cooled plate, IGBT module, reactor, and sealing strip, and through experimental optimization, the water-cooled plate is placed on the outside of the cavity, providing strong anti-condensation performance. This prevents the components inside the cavity from experiencing reduced circuit safety distances due to condensation, which could lead to short circuits and component corrosion, thus greatly improving the reliability of the converter. When the converter experiences cold starts, sudden load drops, or other situations that cause a decrease in the system return water temperature, the addition of a sheet metal layer between the water-cooled plate and the cavity significantly increases thermal resistance, preventing the low temperature from being transferred to the cavity quickly and promptly. The bottom surface of the cavity will not be lower than the ambient temperature inside the converter cavity, thus preventing condensation. After the 26 water-cooled plate connection holes at the bottom of the cavity are connected to the 26 substrate fixing holes on the water-cooled plate with screws, the sealing strip is clamped between the water-cooled plate substrate and the bottom of the cavity, maintaining a clamped state and providing good sealing performance. This effectively prevents water or dust from the outside of the cavity from entering the cavity through the IGBT mounting opening and the reactor mounting opening, preventing dust or water from entering the cavity and causing the devices inside the cavity to fail due to increased dust or water, thereby improving the reliability of the entire machine.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is an isometric view of the structure of an externally mounted liquid-cooled energy storage converter with a water-cooled plate according to this utility model.

[0014] Figure 2 This is an exploded view of the structure of an externally liquid-cooled energy storage converter with a water-cooled plate according to this utility model.

[0015] Figure 3 This is an isometric view of the cavity cover plate of an external liquid-cooled energy storage converter structure according to the present invention;

[0016] Figure 4 This is an isometric view of the cavity of a water-cooled plate external liquid-cooled energy storage converter structure according to this utility model;

[0017] Figure 5 This is an isometric view of the base plate assembly of an external liquid-cooled energy storage converter structure according to the present invention;

[0018] Figure 6 This is an isometric view of the water-cooled plate of the water-cooled plate external liquid-cooled energy storage converter structure of this utility model;

[0019] Figure 7 This is an isometric view of the sealing strip of a water-cooled plate external liquid-cooled energy storage converter structure according to this utility model;

[0020] Figure 8 This is a schematic diagram of the installation of the base plate assembly and the water-cooled plate of the external liquid-cooled energy storage converter structure of this utility model.

[0021] In the diagram: 1. Cavity cover plate, 2. Cavity, 3. Base plate assembly, 4. Water-cooled plate, 5. IGBT module, 6. Reactor, 7. Sealing strip, 21. IGBT mounting opening, 22. Reactor mounting opening, 23. Water-cooled plate connection hole, 24. First mounting hole, 31. First adapter plate, 32. Second adapter plate, 33. Third adapter plate, 34. Water inlet positioning port, 35. Water outlet positioning port, 36. Cavity connecting nut, 37. Base plate, 41. Water outlet pipe, 42. Water-cooled plate fixing hole, 43. Water inlet pipe, 44. Limiting groove, 45. Base plate fixing hole. Detailed Implementation

[0022] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8This utility model discloses a water-cooled plate external liquid-cooled energy storage converter structure, including a cavity cover plate 1, a cavity 2, a base plate assembly 3, a water-cooled plate 4, IGBT modules 5, a reactor 6, and a sealing strip 7. The cavity 2 is topped with the cavity cover plate 1. Several IGBT modules 5 are disposed inside the cavity 2. IGBT mounting openings 21 are provided at the bottom of the cavity 2 corresponding to the mounting positions of the IGBT modules 5. The reactor 6 is disposed inside the cavity 2. A reactor mounting opening 22 is provided at the bottom of the cavity 2 corresponding to the mounting positions of the reactor 6. Several water-cooled plate connection holes 23 are evenly arranged around the IGBT mounting opening 21 and the reactor mounting opening 22. Several first mounting holes 24 are evenly arranged at the bottom edge of the cavity 2. A base plate assembly 3 is installed at the bottom of the cavity 2. The base plate assembly 3 includes a first adapter plate 31, a second adapter plate 32, a third adapter plate 33, a water inlet pipe positioning port 34, a water outlet pipe positioning port 35, a cavity connecting nut 36, and a base plate 37. The base plate 37 has a water inlet pipe positioning port 34 and a water outlet pipe positioning port 35. Several cavity connecting nuts 36 are evenly arranged on the four sides of the base plate 37. The cavity connecting nuts 36 are fixedly connected to the first mounting hole 24 by screws. The first adapter plate 31, the second adapter plate 32, and the third adapter plate 33 are installed on the base plate 37 by screws. A water-cooled plate 4 is installed on the base plate assembly 3. The water-cooled plate 4 includes a water outlet pipe 41, a water-cooled plate fixing hole 42, a water inlet pipe 43, and a limiting device. The water-cooled plate 4 has a groove 44 and a substrate fixing hole 45. Several water-cooled plate fixing holes 42 are provided on the side of the water-cooled plate 4. The three side water-cooled plate fixing holes 42 are fixedly connected to the first adapter plate 31, the second adapter plate 32, and the third adapter plate 33 respectively by screws. A water outlet pipe 41 and a water inlet pipe 43 are connected to the water-cooled plate 4. The water inlet pipe 43 is positioned in the water inlet pipe positioning port 34, and the water outlet pipe 41 is positioned in the water outlet pipe positioning port 35. A limiting groove 44 is provided on the water-cooled plate 4, and a sealing strip 7 is installed inside the limiting groove 44. Several substrate fixing holes 45 are provided inside the limiting groove 44. The substrate fixing holes 45 are fixedly connected to the water-cooled plate connecting hole 23 by screws. The opening size of the IGBT mounting opening 21 is larger than... The IGBT module 5 is mounted on the bottom surface. The IGBT module 5 passes through the IGBT mounting opening 21 and is connected to the water-cooling plate 4 via screws. The opening size of the reactor mounting opening 22 is larger than the bottom surface size of the reactor 6. The reactor 6 passes through the reactor mounting opening 22 and is connected to the water-cooling plate 4 via screws. The sealing strip 7 is adhered and disposed within the limiting groove 44. The sealing strip 7 is sandwiched between the water-cooling plate 4 and the bottom of the cavity 2. The IGBT mounting opening 21 and the reactor mounting opening 22 at the bottom of the cavity 2 are sealed and isolated from the outside by the sealing strip 7. There are three IGBT modules 5. Ten first mounting holes 24 are evenly distributed along the bottom edge of the cavity 2. There are ten cavity connecting nuts 36.The water-cooled plate has 26 connecting holes 23, and the inner side of the limiting groove 44 has 26 base plate fixing holes 45. The water-cooled plate 4 is a high thermal conductivity metal plate, and water-cooling cavities are evenly arranged inside the water-cooled plate 4. The water-cooling cavities are respectively connected to the outlet pipe 41 and the inlet pipe 43. The first adapter plate 31, the second adapter plate 32, the third adapter plate 33, and the bottom support plate 37 are all sheet metal parts. The inlet pipe positioning port 34 and the outlet pipe positioning port 35 are located on the same side of the bottom support plate 37. The cavity cover plate 1 is fixed to the top of the cavity 2 by screws.

[0023] The installation method of this utility model is as follows: First, the water-cooled plate 4 is fixed to the base plate assembly 3. The water inlet pipe 43 and the water outlet pipe 41 on the water-cooled plate 4 are positioned in the water inlet pipe positioning port 34 and the water outlet pipe positioning port 35, respectively. The water-cooled plate fixing holes 42 on the three sides of the water-cooled plate 4 are connected and fixed to the base plate assembly 3 by screws to the first adapter plate 31, the second adapter plate 32 and the third adapter plate 33, respectively. The sealing strip 7 is affixed and installed in the limiting groove 44 of the water-cooled plate 4. Then, the cavity 2 is fixed to the water-cooled plate 4 and the base plate assembly 3. The 26 water-cooled plate connecting holes 23 at the bottom of the cavity 2 are connected to the 26 water-cooled plate connecting holes 26 on the water-cooled plate 4 by screws. The substrate fixing hole 45 is connected, and the sealing strip 7 is sandwiched between the water-cooled plate 4 and the bottom of the cavity 2 to ensure that the mounting area of ​​the IGBT module 5 and the reactor 6 at the bottom of the cavity 2 is isolated and sealed from the outside. The 10 first mounting holes 24 provided on the four sides of the bottom of the cavity 2 are connected to the 10 cavity connecting nuts 36 provided on the base plate assembly 3 by screws, so that the cavity 2, the base plate assembly 3 and the water-cooled plate 4 are connected into a whole. Then, the 3 IGBT modules 5 and the reactor 6 are respectively passed through the IGBT mounting opening 21 and the reactor mounting opening 22 and connected to the water-cooled plate 4 by screws. Finally, the cavity cover plate 1 is connected to the cavity 2 by screws.

[0024] This invention combines a cavity cover plate 1, a cavity 2, a base plate assembly 3, a water-cooled plate 4, an IGBT module 5, a reactor 6, and a sealing strip 7. Through experimental optimization, the water-cooled plate 4 is positioned externally on the outside of the cavity 2, providing strong anti-condensation performance. This prevents short circuits and corrosion of components inside the cavity 2 due to reduced safety distances caused by condensation, significantly improving the reliability of the converter. Furthermore, when the system return water temperature drops due to cold starts or sudden load drops, the added sheet metal layer between the water-cooled plate 4 and the cavity 2 greatly increases thermal resistance, preventing the low temperature from being quickly and promptly transferred to the bottom surface of the cavity 2. This prevents the formation of a dew point temperature lower than the ambient temperature inside the converter cavity 2 on the bottom surface of cavity 2, thus preventing condensation. When the 26 water-cooled plate connection holes 23 at the bottom of cavity 2 are connected to the 26 substrate fixing holes 45 on the water-cooled plate 4 by screws, the sealing strip 7 is clamped between the water-cooled plate 4 and the bottom of cavity 2, maintaining a clamped state and providing good sealing performance. This effectively prevents water or dust from the outside of cavity 2 from entering cavity 2 through IGBT mounting opening 21 and reactor mounting opening 22, preventing dust or water from entering cavity 2 and causing the devices inside cavity 2 to fail due to increased dust or water, thereby improving the reliability of the entire machine.

[0025] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A water-cooled plate external liquid-cooled energy storage converter structure, characterized in that: The system includes a cavity cover plate (1), a cavity (2), a base plate assembly (3), a water-cooled plate (4), an IGBT module (5), a reactor (6), and a sealing strip (7). The cavity (2) is topped with a cavity cover plate (1). Several IGBT modules (5) are installed inside the cavity (2). An IGBT mounting opening (21) is provided at the bottom of the cavity (2) corresponding to the mounting position of the IGBT module (5). A reactor (6) is installed inside the cavity (2). A reactor mounting opening (22) is provided at the bottom of the cavity (2) corresponding to the mounting position of the reactor (6). The IGBT mounting opening (21) and the reactor... A plurality of water-cooled plate connection holes (23) are evenly arranged around the device installation opening (22). A plurality of first mounting holes (24) are evenly arranged at the bottom edge of the cavity (2). A base plate assembly (3) is installed at the bottom of the cavity (2). The base plate assembly (3) includes a first adapter plate (31), a second adapter plate (32), a third adapter plate (33), an inlet pipe positioning port (34), an outlet pipe positioning port (35), a cavity connecting nut (36), and a base plate (37). The base plate (37) is provided with an inlet pipe positioning port (34) and an outlet pipe positioning port (35). A plurality of first mounting holes (24) are evenly arranged on the four sides of the base plate (37). Several cavity connecting nuts (36) are fixedly connected to the first mounting hole (24) by screws. A first adapter plate (31), a second adapter plate (32), and a third adapter plate (33) are installed on the base plate (37) by screws. A water-cooled plate (4) is installed on the base plate assembly (3). The water-cooled plate (4) includes a water outlet pipe (41), a water-cooled plate fixing hole (42), a water inlet pipe (43), a limiting groove (44), and a base plate fixing hole (45). Several water-cooled plate fixing holes (42) are provided on the side of the water-cooled plate (4). The water-cooled plate fixing holes (42) on the three sides are connected by screws. The water-cooled plate (4) is fixedly connected to the first adapter plate (31), the second adapter plate (32) and the third adapter plate (33). The water-cooled plate (4) is connected to the outlet pipe (41) and the inlet pipe (43). The inlet pipe (43) is positioned in the inlet pipe positioning port (34), and the outlet pipe (41) is positioned in the outlet pipe positioning port (35). The water-cooled plate (4) is provided with a limiting groove (44). A sealing strip (7) is installed in the limiting groove (44). Several substrate fixing holes (45) are provided on the inner side of the limiting groove (44). The substrate fixing holes (45) are fixedly connected to the water-cooled plate connecting hole (23) by screws.

2. The water-cooled plate external liquid-cooled energy storage converter structure as described in claim 1, characterized in that: The opening size of the IGBT mounting opening (21) is larger than the mounting bottom size of the IGBT module (5). The IGBT module (5) passes through the IGBT mounting opening (21) and is connected to the water cooling plate (4) by screws. The opening size of the reactor mounting opening (22) is larger than the mounting bottom size of the reactor (6). The reactor (6) passes through the reactor mounting opening (22) and is connected to the water cooling plate (4) by screws.

3. The water-cooled plate external liquid-cooled energy storage converter structure as described in claim 1, characterized in that: The sealing strip (7) is adhered and disposed in the limiting groove (44). The sealing strip (7) is sandwiched between the water cooling plate (4) and the bottom of the cavity (2). The IGBT mounting opening (21) and the reactor mounting opening (22) at the bottom of the cavity (2) are isolated and sealed from the outside by the sealing strip (7).

4. The water-cooled plate external liquid-cooled energy storage converter structure as described in claim 1, characterized in that: There are 3 IGBT modules (5), 10 first mounting holes (24) are evenly arranged at the bottom edge of the cavity (2), there are 10 cavity connecting nuts (36), there are 26 water cooling plate connecting holes (23), and 26 substrate fixing holes (45) are provided inside the limiting groove (44).

5. The water-cooled plate external liquid-cooled energy storage converter structure as described in claim 1, characterized in that: The water-cooled plate (4) is a high thermal conductivity metal plate. Water-cooled cavities are uniformly arranged inside the water-cooled plate (4). The water-cooled cavities are connected to the water outlet pipe (41) and the water inlet pipe (43) respectively.

6. The water-cooled plate external liquid-cooled energy storage converter structure as described in claim 1, characterized in that: The first adapter plate (31), the second adapter plate (32), the third adapter plate (33) and the bottom support plate (37) are all sheet metal parts, and the water inlet pipe positioning port (34) and the water outlet pipe positioning port (35) are located on the same side of the bottom support plate (37).

7. The water-cooled plate external liquid-cooled energy storage converter structure as described in claim 1, characterized in that: The cavity cover plate (1) is fixed on the top of the cavity (2) by screws.

Images