Hydrogen production power supply module

Abstract

The utility model discloses a hydrogen production power supply module, which comprises at least one group of three-phase power input wiring terminals, a positive electrode output wiring terminal and a negative electrode output wiring terminal which are positioned on a first side edge of a first box body; the rectifier module comprises a plurality of rectifier diodes which are attached to the outer side wall of the first liquid cooling plate; the input end of the rectifier module is connected with a three-phase power input terminal; the plurality of inductors are arranged in a space formed by the inner side wall of the first liquid cooling plate and the inner side wall of the second liquid cooling plate in an insulating manner; the voltage reduction module comprises a plurality of IGBT switch tubes which are attached to the outer side wall of the second liquid cooling plate; the capacitor module is arranged in the first box body on the second side edge; the second side edge and the first side edge are two opposite surfaces of the first box body; the control board and the driving board are arranged on the partition board between the capacitor module and the second side edge of the first box body; and the pre-charging capacitor plate is arranged in the first box body on the first side edge.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production power supplies, and particularly relates to a hydrogen production power supply module. Background Art

[0002] The hydrogen production power supply is a key electric energy conversion device in the electrolytic water hydrogen production system. Its core function is to convert alternating current into direct current matching the voltage of the electrolytic cell, thereby driving the electrolysis process of water and decomposing water into hydrogen and oxygen. In the renewable energy hydrogen production system, the hydrogen production power supply receives grid power upward and provides stable direct current for the electrolytic cell downward. The performance and stability of the hydrogen production power supply play a crucial role in improving the hydrogen production efficiency and reducing costs.

[0003] The existing hydrogen production power supply modules have problems such as cumbersome device connection methods, unreasonable heat dissipation settings, large chassis, low transportation efficiency, and large floor area in transportation, application, etc. Summary of the Utility Model

[0004] In view of this, the embodiments of the present utility model provide a hydrogen production power supply module to solve the problems of low transportation efficiency and large floor area in application of the existing hydrogen production power supply module due to the unreasonable internal space structure.

[0005] The embodiments of the present utility model provide a hydrogen production power supply module, including:

[0006] At least one group of three-phase power input terminals, a positive output terminal, and a negative output terminal, located on the first side of the first box body;

[0007] A rectification module, including a plurality of rectification diodes, attached to the outer side wall of the first liquid cooling plate; the input end of the rectification module is connected to the three-phase power input terminals;

[0008] A plurality of inductors, insulated and arranged in the space formed by the inner side walls of the first liquid cooling plate and the second liquid cooling plate;

[0009] A buck module, including a plurality of IGBT switching tubes, attached to the outer side wall of the second liquid cooling plate;

[0010] A capacitor module, arranged inside the first box body on the second side; the second side and the first side are two opposite sides of the first box body;

[0011] A control board and a drive board, arranged on the partition between the capacitor module and the second side of the first box body;

[0012] A pre-charge capacitor board, arranged inside the first box body on the first side;

[0013] Among them, the negative output of the rectification module is electrically connected to the negative output terminal; the negative output of the rectification module is also electrically connected to the output terminal of the buck module; the input terminal of the rectification module is electrically connected to the three-phase power input terminal; the positive output of the rectification module is electrically connected to the input terminal of the buck module; the capacitor module is a bus capacitor and is connected in parallel with the two output terminals of the rectification module; one end of the inductor is electrically connected to the output terminal of the buck module; the other end of the inductor is electrically connected to the positive output terminal.

[0014] The control board is electrically connected to the drive board and the pre-charge capacitor board respectively; the drive board is also electrically connected to the buck module, and the drive board is used to drive the on / off of the IGBT switch; the input terminal of the pre-charge capacitor board is connected to the output terminal of the rectification module, and the output terminal of the pre-charge capacitor board is connected to the input terminal of the buck module, which is used to pre-charge the rectification module.

[0015] Optionally, the hydrogen production power module includes two groups of three-phase power input terminals; among them, the two groups of three-phase power input terminals are respectively connected to the two three-phase voltage output terminals of the phase-shifting transformer.

[0016] Optionally, it includes:

[0017] For the same three-phase voltage input, it is conditioned by one path of voltage conditioning circuit; among them, the voltage conditioning circuit includes a first voltage conditioning branch circuit and a second voltage conditioning branch circuit with the same structure.

[0018] Among them, the first voltage conditioning branch circuit includes:

[0019] A three-phase bridge rectifier circuit composed of six rectifier diodes;

[0020] Two parallel IGBT switch tubes;

[0021] A first freewheeling diode, reversely connected in parallel across each IGBT switch tube;

[0022] Two inductors, respectively connected in series between the two IGBT switch tubes and the capacitor module;

[0023] A second freewheeling diode, whose positive pole is connected to the negative pole of the three-phase bridge rectifier circuit, and the negative pole of the second freewheeling diode is connected between the output terminal of the IGBT switch tube and the inductor.

[0024] Optionally, it further includes:

[0025] A first aluminum bar, connected to the negative output of the rectification module to form the negative output terminal of the hydrogen production power module;

[0026] A second aluminum bar, one end of which is connected to the positive output of the rectification module, and the other end of the second aluminum bar is connected to the positive input terminal of the buck module;

[0027] The third aluminum row, one end of which is connected to the negative output of the rectification module, and the other end of the third aluminum row is connected to the negative input end of the step-down module;

[0028] The fourth aluminum row, one end of which is connected to one end of the capacitor module; the other end of the fourth aluminum row is connected to the other end of the third aluminum row or the negative input end of the step-down module;

[0029] The fifth aluminum row, one end of which is connected to the other end of the capacitor module; the other end of the fifth aluminum row is connected to the other end of the second aluminum row or the positive input end of the step-down module.

[0030] Optionally, the input end of the rectification module is located in its upper region; the positive output of the rectification module is located in its middle region; the negative output of the rectification module is located in its lower region.

[0031] Optionally, the second aluminum row and the third aluminum row cross over the first liquid cooling plate, the inductor, and the second liquid cooling plate from below and are connected to the input end of the step-down module;

[0032] The second aluminum row is below the third aluminum row.

[0033] Optionally, further comprising:

[0034] The first insulating layer is arranged on the upper layer of the third aluminum row, and the covering area is larger than the overlapping part of the first liquid cooling plate, the inductor, and the second liquid cooling plate with the third aluminum row;

[0035] The second insulating layer is arranged between the second aluminum row and the third aluminum row.

[0036] Optionally, further comprising:

[0037] The sixth aluminum row is fixedly connected to the same side of the first liquid cooling plate and the second liquid cooling plate and serves as the positive output terminal of the hydrogen production power module;

[0038] The side plate is fixedly connected to the other side of the first liquid cooling plate and the second liquid cooling plate;

[0039] The bottom plate is fixed below the first liquid cooling plate and the second liquid cooling plate;

[0040] Wherein, the first liquid cooling plate, the second liquid cooling plate, and the bottom plate are conductors; the first liquid cooling plate, the second liquid cooling plate, the sixth aluminum row, the side plate, and the bottom plate form a second box body with an open upper end; several inductors are potted within the second box body; one end of the inductor is connected to the positive output end of the step-down module through the seventh aluminum row; the other end of the inductor is electrically connected to the sixth aluminum row through the bottom plate, the first liquid cooling plate, and the second liquid cooling plate.

[0041] Optionally, further comprising:

[0042] The water inlet and the water outlet are arranged on the first side of the first box body;

[0043] Among them, the waterway structure includes:

[0044] The coolant flows into two first inlet water channels that are branched in the first liquid cooling plate through the water inlet, and after confluence, it flows into two second inlet water channels that are branched in the second liquid cooling plate through the first hose. After confluence through two first outlet water channels in the second liquid cooling plate that form a "C" shape with the second inlet water channel, it flows into two second outlet water channels that are branched in the first liquid cooling plate through the second hose, and then flows out through the water outlet after confluence.

[0045] Optionally, it further includes:

[0046] A Hall sensor, which is arranged at the output end of the inductor.

[0047] Advantages of the present utility model:

[0048] 1. The embodiment of the present utility model provides a hydrogen production power supply module, in which the inductor is potted between two liquid cooling plates, and the rectification module and the buck module are attached to the outside of the liquid cooling plates for heat dissipation. While ensuring the heat dissipation performance of the internal devices of the hydrogen production power supply module, a hydrogen production power supply module with a smaller volume is obtained, thereby improving the transportation efficiency and reducing the floor area.

[0049] 2. The present utility model provides a hydrogen production power supply module, which includes a grid input end, a rectification module, a buck (BUCK) unit, an output measurement unit, and an output end. Among them, the grid input end is a phase-shifting transformer, which branches out two three-phase voltage sources with different phases and is respectively connected to a first voltage conditioning circuit and a second voltage conditioning circuit, and then connected to an electrolytic cell to obtain a hydrogen production power supply module with a low voltage and a large current. The pre-charge capacitor plate is pre-charged through a driving board to avoid excessive voltage across the rectification module at the moment when the hydrogen production power supply circuit is connected to the three-phase power, reduce the startup impact, and improve the safety of the hydrogen production power supply circuit. Description of the Drawings

[0050] The features and advantages of the present utility model will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as any limitation to the present utility model. In the drawings:

[0051] Figure 1 Shows an overall schematic diagram of a hydrogen production power supply module in an embodiment of the present utility model;

[0052] Figure 2 Shows one of the internal structural diagrams of a hydrogen production power supply module in an embodiment of the present utility model;

[0053] Figure 3 Shows another internal structural diagram of a hydrogen production power supply module in an embodiment of the present utility model;

[0054] Figure 4Shows the third internal structure diagram of a hydrogen production power supply module in an embodiment of the present utility model;

[0055] Figure 5 Shows the schematic diagram of the wiring terminals of a rectification module of a hydrogen production power supply module in an embodiment of the present utility model;

[0056] Figure 6 Shows the schematic diagram of the aluminum bus connection structure of a hydrogen production power supply module in an embodiment of the present utility model;

[0057] Figure 7 Shows the schematic diagram of the liquid cooling water path structure of a hydrogen production power supply module in an embodiment of the present utility model. Detailed implementation manners

[0058] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0059] As Figures 1 to 4 shown, the embodiment of the present utility model provides a hydrogen production power supply module. The outside of the box body includes six wiring terminals 1 for two-way three-phase power input, a positive output bus bar 201, a negative output bus bar 202, a water inlet 301 and a water outlet 302.

[0060] As Figure 2 and Figure 3 shown, the rectification module is composed of six groups of rectification diodes. Every two rectification diodes form a rectification circuit module 4. The rectification circuit module 4 is insulatingly attached to the outside of the first liquid cooling plate 501, and the first liquid cooling plate 501 dissipates heat from it.

[0061] The inductor 6 is potted and arranged between the first liquid cooling plate 501, the second liquid cooling plate 502, the positive output bus bar 201 and the side plate 7. The buck module 8 is insulatingly attached to the outside of the second liquid cooling plate 502. The bus capacitor 9 is arranged opposite to the buck module 8. A plurality of brackets 1001 and a cross bar 1002 are arranged above the second liquid cooling plate 502 to facilitate wire management. A Hall sensor 11 is provided at the aluminum bus where the buck module 8 is connected to the inductor 6 for sampling the output voltage / current.

[0062] The control board 12 and the drive board 13 are arranged between the bus capacitor 9 and the side plate of the box body, and a partition is provided between the bus capacitor 9 and the control board 12 and the drive board 13. In addition, an indicator light and an Ethernet port module 14 which are electrically connected to the control board 10 are also provided and fixed on the side plate of the box body. The pre-charge capacitor board 15 is arranged between the negative output bus bar 202 and the side plate of the box body. The control board is electrically connected to the drive board and the pre-charge capacitor board respectively; the drive board is also electrically connected to the buck module, and the drive board is used to drive the opening / closing of the IGBT switch; the input end of the pre-charge capacitor board is connected to the output end of the rectification module, and the output end of the pre-charge capacitor board is connected to the input end of the buck module, and is used to pre-charge the rectification module.

[0063] In a specific embodiment, the indicator light is an LED indicator light, which is used to give a light warning when any one of the voltage conditioning circuits collected by the main control board is abnormal. Voltage and current monitoring are carried out on each voltage conditioning circuit, and an LED indicator light is correspondingly set. When the voltage or current value of any one of the voltage conditioning circuits is abnormal, the corresponding LED indicator light switches from ever-green to a flashing red light state.

[0064] As Figure 5 and Figure 6 shown, the three-phase power input is connected to the input end 401 of the rectification module 4, and the first aluminum bar, that is, the negative output bus bar 202, is connected to the negative output of the rectification module to form the negative output end of the hydrogen production power module.

[0065] One end of the second aluminum bar 1602 is connected to the positive output 402 of the rectification module, and the other end of the second aluminum bar 1602 is connected to the positive input end of the buck module.

[0066] One end of the third aluminum bar 1603 is connected to the negative output 403 of the rectification module, and the other end of the third aluminum bar 1603 is connected to the negative input end of the buck module.

[0067] One end of the fourth aluminum bar 1604 is connected to one end of the capacitor module; the other end of the fourth aluminum bar 1604 is connected to the other end of the third aluminum bar 1603 or the negative input end of the buck module.

[0068] One end of the fifth aluminum bar 1605 is connected to the other end of the capacitor module; the other end of the fifth aluminum bar 1605 is connected to the other end of the second aluminum bar 1602 or the positive input end of the buck module.

[0069] In a specific embodiment, for two-way three-phase voltage input, two voltage conditioning circuits are respectively provided, and the second aluminum bar 1602, the fifth aluminum bar 1605 and the capacitors are evenly divided into two groups and connected respectively, and finally are connected in parallel at the output end.

[0070] An insulating layer 17 is provided between the second aluminum row 1602 and the third aluminum row 1603.

[0071] As Figure 7 shown, the waterway structure includes:

[0072] The coolant flows through the water inlet 301 and the hose into the pipe port 503, passes through the two first water inlet channels that are branched in the first liquid cooling plate, and after confluence, flows into the pipe port 505 of the second liquid cooling plate through the hose from the pipe port 504. After passing through the two second water inlet channels that are branched, the coolant flows through the two first water outlet channels that form a "C" shape with the second water inlet channels in the second liquid cooling plate and then flows into the pipe port 507 of the first liquid cooling plate through the hose at the pipe port 506, then flows through the two second water outlet channels that are branched, and after confluence, flows out through the pipe port 508, the hose, and the water outlet 302.

[0073] The embodiment of the present invention provides a hydrogen production power module. The inductor is potted between two liquid cooling plates, and the rectification module and the buck module are attached to the outside of the liquid cooling plate for heat dissipation. While ensuring the heat dissipation performance of the internal components of the hydrogen production power module, a hydrogen production power module with a smaller volume is obtained, thereby improving the transportation efficiency and reducing the floor area.

[0074] The present invention provides a hydrogen production power circuit with a soft start function, which includes a grid input end, a rectification module, a buck (BUCK) unit, an output measurement unit, and an output end. Among them, the grid input end is a phase-shifting transformer that branches out two three-phase voltage sources with different phases, which are respectively connected to the first voltage conditioning circuit and the second voltage conditioning circuit, and then connected to the electrolytic cell to obtain a hydrogen production power module with a low voltage and a large current. By setting a pre-charge capacitor plate and pre-charging the pre-charge capacitor plate through a drive board, it is avoided that the voltage across the rectification module is too large at the moment when the hydrogen production power circuit is connected to the three-phase power, reducing the start-up impact and improving the safety of the hydrogen production power circuit.

[0075] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A hydrogen production power module, characterized in that: include: At least one set of three-phase electrical input terminals, positive output terminals and negative output terminals, located on a first side of the first housing; A rectifier module, including a plurality of rectifier diodes, is attached to the outer wall of the first liquid cooling plate; the input end of the rectifier module is connected to the three-phase electrical input terminal; A plurality of inductors are insulated and arranged in a space formed by the inner side wall of the first liquid cooling plate and the inner side wall of the second liquid cooling plate; A step-down module, including a plurality of IGBT switch tubes, is attached to the outer wall of the second liquid cooling plate; A capacitor module is arranged inside the first box body located at a second side; the second side and the first side are two opposite sides of the first box body; A control board and a drive board are arranged on a partition between the capacitor module and the second side of the first box; A pre-charge capacitor plate is arranged inside the first box body located at the first side; Among them, the negative output of the rectifier module is electrically connected to the negative output terminal; the negative output of the rectifier module is also electrically connected to the output end of the step-down module; the input end of the rectifier module is electrically connected to the three-phase power input terminal; the positive output of the rectifier module is electrically connected to the input end of the step-down module; the capacitor module is a bus capacitor, which is connected in parallel with the two output ends of the rectifier module; one end of the inductor is electrically connected to the output end of the step-down module; the other end of the inductor is electrically connected to the positive output terminal; The control board is electrically connected to the drive board and the pre-charge capacitor board respectively; the drive board is also electrically connected to the step-down module, and the drive board is used to drive the on / off of the IGBT switch; the input end of the pre-charge capacitor board is connected to the output end of the rectifier module, and the output end of the pre-charge capacitor board is connected to the input end of the step-down module, for pre-charging the rectifier module.

2. The hydrogen production power supply module according to claim 1, characterized in that: The hydrogen production power supply module comprises two groups of three-phase electrical input terminals; wherein the two groups of three-phase electrical input terminals are respectively connected to two three-phase voltage output terminals of a phase-shifting transformer.

3. The hydrogen production power module according to claim 1, characterized in that: include: For the same three-phase voltage input, one voltage conditioning circuit is used for conditioning; wherein the voltage conditioning circuit comprises a first voltage conditioning branch circuit and a second voltage conditioning branch circuit with the same structure; Wherein, the first voltage conditioning branch circuit comprises: The three-phase bridge rectifier circuit is composed of six rectifier diodes; Two parallel IGBT switch tubes; A first freewheeling diode is connected in reverse parallel at both ends of each IGBT switch tube; Two inductors are connected in series between the two IGBT switch tubes and the capacitor module respectively; A second freewheeling diode, whose anode is connected to the cathode of the three-phase bridge rectifier circuit, and whose cathode is connected between the output end of the IGBT switch tube and the inductor.

4. The hydrogen production power supply module according to claim 3, characterized in that: Also includes: A first aluminum bar, connected to the negative electrode output of the rectifier module, forming the negative electrode output end of the hydrogen production power module; A second aluminum bar, one end of which is connected to the positive output of the rectifier module, and the other end of the second aluminum bar is connected to the positive input of the step-down module; The third aluminum row, one end of which is connected to the negative output of the rectification module, and the other end of the third aluminum row is connected to the negative input of the buck module; The fourth aluminum row, one end of which is connected to one end of the capacitor module; the other end of the fourth aluminum row is connected to the other end of the third aluminum row or the negative input of the buck module; The fifth aluminum row, one end of which is connected to the other end of the capacitor module; the other end of the fifth aluminum row is connected to the other end of the second aluminum row or the positive input of the buck module.

5. The hydrogen production power module according to claim 4, characterized in that: The input end of the rectification module is located in its upper region; the positive output of the rectification module is located in its middle region; the negative output of the rectification module is located in its lower region.

6. The hydrogen production power module according to claim 5, characterized in that: The second aluminum row and the third aluminum row cross over the first liquid cooling plate, the inductor and the second liquid cooling plate from below and are connected to the input end of the buck module; The second aluminum row is below the third aluminum row.

7. The hydrogen production power module according to claim 6, characterized in that: It further includes: The first insulating layer is arranged on the upper layer of the third aluminum row, and the covering area is larger than the overlapping part of the first liquid cooling plate, the inductor and the second liquid cooling plate with the third aluminum row; The second insulating layer is arranged between the second aluminum row and the third aluminum row.

8. The hydrogen production power module according to claim 1, characterized in that: It further includes: The sixth aluminum row is fixedly connected to the same side of the first liquid cooling plate and the second liquid cooling plate and serves as the positive output terminal of the hydrogen production power module; The side plate is fixedly connected to the other side of the first liquid cooling plate and the second liquid cooling plate; The bottom plate is fixed below the first liquid cooling plate and the second liquid cooling plate; Wherein, the first liquid cooling plate, the second liquid cooling plate and the bottom plate are conductors; the first liquid cooling plate, the second liquid cooling plate, the sixth aluminum row, the side plate and the bottom plate form a second box body with an open upper end; several of the inductors are potted in the second box body; one end of the inductor is connected to the positive output terminal of the buck module through the seventh aluminum row; the other end of the inductor is electrically connected to the sixth aluminum row through the bottom plate, the first liquid cooling plate and the second liquid cooling plate.

9. The hydrogen production power supply module according to claim 1, characterized in that: It further includes: The water inlet and the water outlet are arranged on the first side of the first box body; Wherein, the waterway structure includes: The coolant flows into the two first inlet channels divided in the first liquid cooling plate through the water inlet, and after confluence, flows into the two second inlet channels divided in the second liquid cooling plate through the first hose, and after confluence through the two first outlet channels in the "匚" shape formed with the second inlet channels in the second liquid cooling plate, flows into the two second outlet channels divided in the first liquid cooling plate through the second hose, and after confluence, flows out through the water outlet.

10. The hydrogen production power module according to claim 1, characterized in that: It further includes: The Hall sensor is arranged at the output end of the inductor.

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