Direct-current conversion power supply

Abstract

The utility model discloses a direct-current conversion power supply, which relates to the technical field of hydrogen production by water electrolysis and comprises a shell, a module core and wheels, the shell comprises a box body, a cover plate detachably connected with the box body and a mounting bracket arranged in the box body, the box body is respectively provided with a wire inlet, a wire outlet, a water inlet, a water outlet, an air inlet and an air outlet, the wheels are arranged at the bottom of the box body, and the mounting bracket is used for mounting the module core; the module inner core comprises an element assembly, a connecting assembly and a cooling system, the cooling system comprises an air cooling heat dissipation module and a water cooling heat dissipation module, and the water cooling heat dissipation module is connected with the water inlet and the water outlet. The whole direct-current conversion power supply is designed into a box body structure, and the bottom of the box body is provided with wheels, so that the portability of the direct-current conversion power supply can be improved to facilitate assembly and disassembly; compared with a single heat dissipation mode, a mode of combining air cooling heat dissipation and water cooling heat dissipation is adopted, and the heat dissipation efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen production by electrolysis of water, and in particular to a direct current conversion power supply. Background Art

[0002] At present, the world is in a period of reconstruction of new industries. Hydrogen energy is a secondary energy source with abundant sources, green and low carbon, and wide application. It is of great significance to reduce the emission of greenhouse gases such as carbon dioxide and achieve the "dual carbon" goal. Green hydrogen is a kind of hydrogen produced by electrolyzing water using renewable energy such as wind power, hydropower, and solar energy, and its carbon emissions are zero during the production process. Hydrogen production by electrolysis of water is currently the most important method for producing green hydrogen. The whole process can achieve zero emissions. DC conversion power supply plays an important role in hydrogen production by electrolysis of water.

[0003] The current DC conversion power supply mainly adopts a horizontal structure. If the horizontal DC conversion power supply is designed to have a larger capacity, the whole structure will be very bulky and inconvenient to load and unload. In addition, the current DC conversion power supply adopts a single air-cooling heat dissipation method, and the heat dissipation efficiency is not high.

[0004] Therefore, how to improve the portability of the DC conversion power supply to facilitate loading and unloading, and how to improve the heat dissipation efficiency are problems that technical personnel in this field need to solve. Utility Model Content

[0005] The purpose of the present application is to provide a DC conversion power supply to solve the following problems: if a horizontal DC conversion power supply is to be designed with a larger capacity, the whole will be very bulky and inconvenient to load and unload; the current DC conversion power supply adopts a single air-cooling heat dissipation method, and the heat dissipation efficiency is not high.

[0006] In order to solve the above technical problems, the present application provides a DC conversion power supply, comprising: a housing, a module core and a wheel;

[0007] The housing comprises a box body, a cover plate detachably connected to the box body, and a mounting bracket arranged inside the box body, the box body is respectively provided with a line inlet, a line outlet, a water inlet, a water outlet, an air inlet and an air outlet, the wheels are arranged at the bottom of the box body, and the mounting bracket is used to install the module core;

[0008] The module core includes a component assembly, a connection assembly and a cooling system. The cooling system includes an air-cooled heat dissipation module and a water-cooled heat dissipation module. The water-cooled heat dissipation module is respectively connected to the water inlet and the water outlet.

[0009] Optionally, the component assembly includes an insulated gate bipolar transistor, a diode, an inductor, an input filter capacitor, an output filter capacitor, a flying capacitor, a fast fuse, a contactor, a resistor, a power supply and a circuit board, and the connection assembly consists of a connection bar, a first stacked busbar, a second stacked busbar and an insulating column;

[0010] The input filter capacitor is installed on the first stacked busbar, the output filter capacitor and the flying capacitor are installed on the second stacked busbar, and the insulated gate bipolar transistor, the diode, the inductor, the fast fuse, the contactor, the resistor, the power supply, the circuit board, the first stacked busbar and the second stacked busbar are connected through the connecting bar.

[0011] Optionally, the water-cooled heat dissipation module includes a first water-cooling plate and a second water-cooling plate that are interconnected, the first water-cooling plate or the second water-cooling plate is respectively connected to the outlet and the water inlet, the inductor is installed on the second water-cooling plate, and the insulated gate bipolar transistor and the diode are installed on the first water-cooling plate.

[0012] Optionally, the insulated gate bipolar transistor and the diode are located between the first stacked busbar and the second stacked busbar.

[0013] Optionally, the air-cooling heat dissipation module includes a plurality of fans, and the fans are located on the top of the module core.

[0014] Optionally, one end of the input filter capacitor, the output filter capacitor and the flying capacitor are connected to the screw holes on the mounting bracket through bolts.

[0015] Optionally, a wire input box is provided at the top of the box, the wire input port is provided at the top of the wire input box, the wire output port is provided at the bottom of the side of the box, the water inlet and the water outlet are provided at the side of the box, the air inlet is provided at the bottom of the box, the air outlet is provided at the top of the box, and insulating plates are provided at the wire input port and the wire output port.

[0016] Optionally, the box is in the shape of a rectangular parallelepiped, and the wheels include two fixed wheels and two universal wheels, the fixed wheels and the universal wheels are respectively arranged at the corners of the bottom of the box, and the inner side of the wheel installation is connected with a U-shaped reinforcement rib.

[0017] Optionally, packaging fixings are provided at the corners of the bottom of the box body and the top of the box body.

[0018] Optionally, a positioning piece is connected to the top edge of the box body, a screw hole is provided on the positioning piece, and a folding handle is also provided on the side wall of the box body.

[0019] A DC conversion power supply provided by the present application includes: a shell, a module core and wheels; the shell includes a box body, a cover plate detachably connected to the box body and a mounting bracket arranged inside the box body, the box body is respectively provided with a line inlet, a line outlet, a water inlet, a water outlet, an air inlet and an air outlet, the wheels are arranged at the bottom of the box body, and the mounting bracket is used to install the module core; the module core includes a component assembly, a connection assembly and a cooling system, the cooling system includes an air-cooled heat dissipation module and a water-cooled heat dissipation module, and the water-cooled heat dissipation module is respectively connected to the water inlet and the water outlet. The present application designs the entire DC conversion power supply into a box structure, and the bottom of the box body is provided with wheels, which can improve the portability of the DC conversion power supply for easy loading and unloading; compared with a single heat dissipation method, the present application adopts a combination of air-cooled heat dissipation and water-cooled heat dissipation, which can improve the heat dissipation efficiency.

[0020] In addition, the internal structure of the DC conversion power supply is compact and reasonable, and the capacity of a single DC conversion power supply can reach 350kW; the DC conversion power supply adopts water cooling as the main cooling method and air cooling as the auxiliary cooling method, which has higher heat dissipation efficiency and increases the service life of the product; the DC conversion power supply can be used alone or installed in a cabinet, which is easy to transport and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] FIG1 is a structural diagram of a first DC conversion power supply provided in an embodiment of the present application;

[0023] FIG2 is a structural diagram of a second DC conversion power supply provided in an embodiment of the present application;

[0024] FIG3 is a structural diagram of a first housing provided in an embodiment of the present application;

[0025] FIG4 is a structural diagram of a second housing provided in an embodiment of the present application;

[0026] FIG5 is a structural diagram of a first module kernel provided in an embodiment of the present application;

[0027] FIG6 is a structural diagram of a second module kernel provided in an embodiment of the present application;

[0028] FIG7 is a schematic diagram of the appearance of a first DC conversion power supply provided in an embodiment of the present application;

[0029] FIG8 is a schematic diagram of the appearance of a second DC conversion power supply provided in an embodiment of the present application;

[0030] The reference numerals are as follows: 1 is a housing, 2 is a module core, 3 is a wheel, 101 is a box, 102 is a cover plate, 103 is a mounting bracket, 104 is a line inlet, 105 is a line outlet, 106 is a water inlet, 107 is a water outlet, 108 is an air inlet, 109 is an air outlet, 110 is a line inlet box, 111 is an insulating plate, 112 is a positioning member, 113 is a folding handle, 114 is a packaging fixing member, 201 is an insulated gate bipolar transistor, 202 is a diode, 203 is an inductor, 204 is an input filter capacitor, 205 is an output filter capacitor, 206 is a flying capacitor, 207 is a fast fuse, 208 is a contactor, 209 is a resistor, 210 is a power supply, 211 is a circuit board, 212 is a connecting bar, 213 is a first stacked busbar, 214 is a second stacked busbar, 215 is an insulating column, 216 is a fan, 217 is a first water-cooled plate, and 218 is a second water-cooled plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The core of the present application is to provide a DC conversion power supply, which is used to improve the portability of the DC conversion power supply to facilitate loading and unloading, and to improve the heat dissipation efficiency.

[0033] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] FIG1 is a structural diagram of a first type of DC conversion power supply provided in an embodiment of the present application, and FIG2 is a structural diagram of a second type of DC conversion power supply provided in an embodiment of the present application. As shown in FIG1 and FIG2, the DC conversion power supply includes: a shell 1, a module core 2 and a wheel 3; the shell 1 includes a box body 101, a cover plate 102 detachably connected to the box body 101 and a mounting bracket 103 arranged inside the box body 101, and the box body 101 is respectively provided with a line inlet 104, a line outlet 105, a water inlet 106, a water outlet 107, an air inlet 108 and an air outlet 109, the wheel 3 is arranged at the bottom of the box body 101, and the mounting bracket 103 is used to install the module core 2; the module core 2 includes a component assembly, a connection assembly and a cooling system, and the cooling system includes an air-cooled heat dissipation module and a water-cooled heat dissipation module, and the water-cooled heat dissipation module is respectively connected to the water inlet 106 and the water outlet 107.

[0035] The embodiment of the present application does not specifically limit the shape of the housing 1, the number of wheels 3, and the specific composition of the component components and connection components in the module core 2. The housing 1, the module core 2, and the wheels 3 are described in detail below.

[0036] FIG3 is a structural diagram of the first type of housing provided in the embodiment of the present application, and FIG4 is a structural diagram of the second type of housing provided in the embodiment of the present application. As shown in FIG3 and FIG4, each component in the housing 1 can be connected by rivet nuts or rivet studs, and the protection level of the housing 1 meets IP2X. The housing 1 includes a housing 101, an incoming line box 110, a cover plate 102, an insulating plate 111, and a mounting bracket 103; wherein the housing 101, the incoming line box 110, and the cover plate 102 are made of high-strength cold-rolled steel plates by spraying, the sealing plate is made of SMC or DMC insulating plates 111, and the mounting bracket 103 is made of galvanized plates or aluminum-zinc coated plates. The housing 101 and the cover plate 102 are detachably connected, specifically, they can be connected by rivet nuts or rivet studs, and the detachable connection method facilitates the assembly and maintenance of the module core 2. The top of the box 101 is provided with an inlet box 110, the inlet port 104 is provided at the top of the inlet box 110, the outlet port 105 is provided at the bottom of the side of the box 101, the water inlet port 106 and the water outlet port 107 are provided at the side of the box 101, the air inlet port 108 is provided at the bottom of the box 101, the air outlet port 109 is provided at the top of the box 101, and the inlet port 104 and the outlet port 105 are provided with an insulating plate 111; in addition, the inlet box 110 may include a box body and a box cover detachably connected to the box body. The box 101 may be designed to be a rectangular parallelepiped, and the wheels 3 include two fixed wheels and two universal wheels, the fixed wheels and the universal wheels are respectively provided at the corners of the bottom of the box 101, and the inner side of the wheel 3 installation position is connected with a U-shaped reinforcing rib, and the reinforcing rib is provided to improve the support of the wheel 3 to the box 101. A packaging fixing member 114 is provided at the corners of the bottom of the box 101 and the top of the box 101. As shown in FIG3 and FIG4, a packaging fixing member 114 is provided at a corner of the bottom of the box 101 and a corner of the top of the box 101, respectively. The packaging fixing member 114 is fixed to the box 101 by bolts. By providing the fixing member, the DC conversion power supply can be prevented from shaking and colliding during the packaging and transportation process. A positioning member 112 is connected to the top edge of the box 101, and a screw hole is provided on the positioning member 112. A folding handle 113 is also provided on the side wall of the box 101; by providing the positioning member 112 with a screw hole, when the DC conversion power supply is installed, the DC conversion power supply can be positioned by matching the bolt with the screw hole; the folding handle 113 can be made of aluminum alloy, and the folding handle 113 can be provided to facilitate the transportation of the DC conversion power supply.

[0037] FIG5 is a structural diagram of the first module core provided in the embodiment of the present application, and FIG6 is a structural diagram of the second module core provided in the embodiment of the present application. As shown in FIG5 and FIG6, the component assembly is selected according to the DC-DC topology structure, and mainly includes an insulated gate bipolar transistor 201, a diode 202, an inductor, an input filter capacitor 204, an output filter capacitor 205, a flying capacitor 206, a fast fuse 207, a contactor 208, a resistor 209, a power supply 210 and a circuit board 211; the connection assembly is connected by The first stacked busbar 212, the first stacked busbar 213, the second stacked busbar 214 and the insulating column 215 are composed; the input filter capacitor 204 is installed on the first stacked busbar 213, the output filter capacitor 205 and the flying capacitor 206 are installed on the second stacked busbar 214, and the insulated gate bipolar transistor 201, the diode 202, the inductor, the fast fuse 207, the contactor 208, the resistor 209, the power supply 210, the circuit board 211, the first stacked busbar 213 and the second stacked busbar 214 are connected through the connecting bar 212. Connecting various components through the connecting bar 212 reduces the use of cable connections and can effectively reduce the interference of stray inductance.

[0038] The water cooling heat dissipation module includes a first water cooling plate 217 and a second water cooling plate 218 which are interconnected. The first water cooling plate 217 or the second water cooling plate 218 is connected to the outlet 105 and the water inlet 106 respectively. The inductor is installed on the second water cooling plate 218, and the insulated gate bipolar transistor 201 and the diode 202 are installed on the first water cooling plate 217. Considering that the heat generated by the insulated gate bipolar transistor 201, the diode 202 and the inductor is relatively large, water cooling heat dissipation is adopted; in addition, the first water cooling plate 217 and the second water cooling plate 218 can be connected to the water inlet and outlet through a polyvinyl chloride (PVC) hose. The water inlet 106 and the water outlet 107 in FIG. 4 are close to the first water cooling plate 217, so the water inlet 106 and the water outlet 107 are connected to the first water cooling plate 217.

[0039] The air-cooling heat dissipation module includes a plurality of fans 216 , which are located at the top of the module core 2 , and the wind is discharged outwards, using the air outlet 109 at the top of the box body 101 to discharge the heat of each component.

[0040] As shown in Fig. 6, the insulated gate bipolar transistor 201 and the diode 202 are located between the first stacked busbar 213 and the second stacked busbar 214. The input filter capacitor 204, the output filter capacitor 205 and the flying capacitor 206 are installed on the first stacked busbar 213 and the second stacked busbar 214, respectively. The insulated gate bipolar transistor 201 is close to the capacitor, which can effectively reduce the stray inductance in the circuit.

[0041] One end of the input filter capacitor 204, the output filter capacitor 205 and the flying capacitor 206 are connected to the screw holes on the mounting bracket 103 through bolts. Other components in the module core 2 can be installed and fixed to the inner wall of the box body 101 or the mounting bracket 103, and the fixing method can be connected by pressure riveting nuts or pressure riveting studs.

[0042] As shown in Figures 5 and 6, a contactor 208, a fast fuse 207, a fan 216 and a resistor 209 are arranged on the top of the module core 2; below the fan 216 is an inductor, which is installed on the second water-cooled plate 218; below the inductor is a first stacked busbar 213, on which an input filter capacitor 204 is installed, and the second stacked busbar 214 is located below the first stacked busbar 213, on which an output filter capacitor 205 and a flying capacitor 206 are installed; between the first stacked busbar 213 and the second stacked busbar 214, an insulated gate bipolar transistor 201 and a diode 202 are arranged, and a second water-cooled plate 218 is installed on the insulated gate bipolar transistor 201 and the diode 202; and an insulating column 215 is installed on the connecting row 212 below the second stacked busbar 214.

[0043] Figure 7 is a schematic diagram of the appearance of the first DC conversion power supply provided in an embodiment of the present application, and Figure 8 is a schematic diagram of the appearance of the second DC conversion power supply provided in an embodiment of the present application. As shown in Figures 7 and 8, the DC conversion power supply is a vertical rectangular parallelepiped and can be used alone or installed in a cabinet for use. It is easy to transport and install.

[0044] A DC conversion power supply provided in an embodiment of the present application includes: a shell, a module core and wheels; the shell includes a box body, a cover plate detachably connected to the box body and a mounting bracket arranged inside the box body, the box body is respectively provided with a line inlet, a line outlet, a water inlet, a water outlet, an air inlet and an air outlet, the wheels are arranged at the bottom of the box body, and the mounting bracket is used to install the module core; the module core includes a component assembly, a connection assembly and a cooling system, the cooling system includes an air-cooled heat dissipation module and a water-cooled heat dissipation module, and the water-cooled heat dissipation module is respectively connected to the water inlet and the water outlet. The present application designs the entire DC conversion power supply into a box structure, and the bottom of the box body is provided with wheels, which can improve the portability of the DC conversion power supply for easy loading and unloading; compared with a single heat dissipation method, the present application adopts a combination of air-cooled heat dissipation and water-cooled heat dissipation, which can improve the heat dissipation efficiency.

[0045] In addition, the internal structure of the DC conversion power supply is compact and reasonable, and the capacity of a single DC conversion power supply can reach 350kW; the DC conversion power supply adopts water cooling as the main cooling method and air cooling as the auxiliary cooling method, which has higher heat dissipation efficiency and increases the service life of the product; the DC conversion power supply can be used alone or installed in a cabinet, which is easy to transport and install.

[0046] The above is a detailed introduction to a DC conversion power supply provided by the present application. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

[0047] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A DC conversion power supply, characterized in that: include: Housing (1), module core (2) and wheels (3); The housing (1) comprises a box body (101), a cover plate (102) detachably connected to the box body (101), and a mounting bracket (103) arranged inside the box body (101); the box body (101) is respectively provided with a wire inlet (104), a wire outlet (105), a water inlet (106), a water outlet (107), an air inlet (108), and an air outlet (109); the wheel (3) is arranged at the bottom of the box body (101); and the mounting bracket (103) is used to install the module core (2); The module core (2) comprises a component assembly, a connection assembly and a cooling system, the cooling system comprises an air-cooling heat dissipation module and a water-cooling heat dissipation module, the water-cooling heat dissipation module being respectively connected to the water inlet (106) and the water outlet (107).

2. The DC conversion power supply according to claim 1, characterized in that: The component assembly comprises an insulated gate bipolar transistor (201), a diode (202), an inductor (203), an input filter capacitor (204), an output filter capacitor (205), a flying capacitor (206), a fast fuse (207), a contactor (208), a resistor (209), a power supply (210) and a circuit board (211); and the connection assembly comprises a connection bar (212), a first stacked bus bar (213), a second stacked bus bar (214) and an insulating column (215); The input filter capacitor (204) is mounted on the first stacked busbar (213), the output filter capacitor (205) and the flying capacitor (206) are mounted on the second stacked busbar (214), and the insulated gate bipolar transistor (201), the diode (202), the inductor (203), the fast fuse (207), the contactor (208), the resistor (209), the power supply (210), the circuit board (211), the first stacked busbar (213), and the second stacked busbar (214) are connected via the connecting bar (212).

3. The DC conversion power supply according to claim 2, characterized in that: The water-cooling heat dissipation module comprises a first water-cooling plate (217) and a second water-cooling plate (218) which are interconnected, the first water-cooling plate (217) or the second water-cooling plate (218) being connected to the line outlet (105) and the water inlet (106) respectively, the inductor (203) being mounted on the second water-cooling plate (218), and the insulated gate bipolar transistor (201) and the diode (202) being mounted on the first water-cooling plate (217).

4. The DC conversion power supply according to claim 2, characterized in that: The insulated gate bipolar transistor (201) and the diode (202) are located between the first stacked busbar (213) and the second stacked busbar (214).

5. The DC conversion power supply according to claim 1, characterized in that: The air-cooling heat dissipation module comprises a plurality of fans (216), and the fans (216) are located at the top of the module core (2).

6. The DC conversion power supply according to claim 2, characterized in that: One end of the input filter capacitor (204), the output filter capacitor (205) and the flying capacitor (206) are connected to the screw holes on the mounting bracket (103) via bolts.

7. The DC conversion power supply according to claim 1, characterized in that: A wire inlet box (110) is provided at the top of the box body (101), the wire inlet (104) is provided at the top of the wire inlet box (110), the wire outlet (105) is provided at the bottom of a side surface of the box body (101), the water inlet (106) and the water outlet (107) are provided at the side surface of the box body (101), the air inlet (108) is provided at the bottom of the box body (101), the air outlet (109) is provided at the top of the box body (101), and insulating plates (111) are provided at the wire inlet (104) and the wire outlet (105).

8. The DC conversion power supply according to claim 1, characterized in that: The box (101) is in the shape of a rectangular parallelepiped, and the wheels (3) include two fixed wheels and two universal wheels, the fixed wheels and the universal wheels are respectively arranged at the corners of the bottom of the box (101), and the inner side of the wheel (3) installation position is connected with a U-shaped reinforcing rib.

9. The DC conversion power supply according to claim 1, characterized in that: A packaging fixing piece (114) is provided at the corners of the bottom of the box body (101) and the top of the box body (101).

10. The DC conversion power supply according to any one of claims 1 to 9, characterized in that: A positioning piece (112) is connected to the top edge of the box body (101), a screw hole is provided on the positioning piece (112), and a folding handle (113) is also provided on the side wall of the box body (101).

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