Hydrogen production power supply cabinet

Abstract

The hydrogen production power supply cabinet comprises a power conversion cabinet, the power conversion cabinet comprises a power conversion cabinet body, a plurality of power conversion modules, a plurality of liquid cooling devices and a heat exchanger, the power conversion modules, the liquid cooling devices and the heat exchanger are arranged in the power conversion cabinet body, the input ends of the power conversion modules are electrically connected in series, and the output ends of the power conversion modules are electrically connected in parallel. The plurality of liquid cooling devices are arranged in the power conversion cabinet comprising the plurality of power conversion modules connected in parallel, each liquid cooling device is in contact with each power conversion module, and the heat exchanger is used for cooling air flowing through the power conversion cabinet in the power conversion cabinet, and in the power conversion cabinet comprising the plurality of power conversion modules connected in parallel, the plurality of liquid cooling devices are arranged, and each liquid cooling device is in contact with each power conversion module; according to the power conversion cabinet provided by the utility model, the power conversion module is quickly cooled through the heat exchanger, the heat dissipation effect can be effectively improved by cooling air flowing through the power conversion cabinet in the power conversion cabinet, and the size of the cabinet can be effectively reduced and the occupied area of the cabinet can be effectively reduced because an air-cooled heat dissipation device does not need to be adopted.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to a hydrogen production power cabinet. Background Art

[0002] At present, electricity is generally generated through renewable energy (mainly wind and solar power), and then direct current is obtained through power conversion, which is then input into a hydrogen production electrolyzer. The hydrogen production electrolyzer uses an electrochemical process to decompose water molecules into hydrogen and oxygen, which are precipitated at the cathode and anode respectively to obtain hydrogen.

[0003] Since the current required by the hydrogen production electrolyzer is usually as high as tens of kiloamperes, while the current output by a single power conversion module is only a few thousand amperes, in order to meet the MW-level high-power power supply requirements, multiple power conversion modules need to be connected in parallel to achieve high current output. After multiple power conversion modules are connected in parallel, the heat dissipation increases, and the conventional air-cooling heat dissipation effect is not good. In addition, since the area of ​​the air-cooling heat dissipation device is relatively large, the cabinet size is large, resulting in a large area occupied by the cabinet. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present application is to provide a hydrogen production power supply cabinet; the hydrogen production power supply cabinet provided by the present application can effectively improve the heat dissipation effect, can effectively reduce the size of the cabinet, and can effectively reduce the floor space of the cabinet.

[0005] The technical solutions provided by this application are as follows: A hydrogen production power supply cabinet comprises: a power conversion cabinet, the power conversion cabinet comprising: a power conversion cabinet body, and a plurality of power conversion modules, a plurality of liquid cooling devices and a heat exchanger arranged in the power conversion cabinet body; The input ends of the power conversion modules are electrically connected in series; The output ends of the power conversion modules are electrically connected in parallel; Each of the liquid cooling devices is in contact with each of the power conversion modules; The heat exchanger is used to cool the air flowing through the power conversion cabinet.

[0006] Optionally, each of the power conversion modules includes an inverter module, a transformer and a rectifier module, and the liquid cooling device includes a first liquid cooling plate, a second liquid cooling plate and a first liquid cooling tube; The input ends of the inverters are electrically connected in series; The output end of the inverter is electrically connected to the primary side of the transformer; The secondary side of the transformer is electrically connected to the input end of the rectifier module; The output ends of the rectifier modules are electrically connected in series; The first liquid cooling plate is arranged in the inverter module; The first liquid cooling tube is arranged in the transformer; The second liquid cooling plate is arranged in the rectifier module.

[0007] Optionally, each of the power conversion modules further includes: a first reactor, and the liquid cooling device further includes a third liquid cooling plate and a second liquid cooling tube; The first reactor is arranged in the power conversion cabinet; The positive output end of the rectifier module is electrically connected to the first end of the first reactor; The third liquid cooling plate and the second liquid cooling tube are arranged in the first reactor.

[0008] Optionally, a first support seat is provided in the power conversion cabinet, and the inverter module includes: a first capacitor, an inverter unit, and a second capacitor; The first capacitor and the first liquid cooling plate are fixedly arranged on the first supporting seat; The inverter unit is fixedly disposed on one side of the first liquid cooling plate, and the first capacitor is close to the other side of the first liquid cooling plate; The second capacitor is fixedly arranged on the inverter unit; The first end of the first capacitor is electrically connected to the positive input end of the inverter unit; The second end of the first capacitor is electrically connected to the negative input end of the inverter unit; The output end of the inverter unit is electrically connected to the primary side of the transformer through the second capacitor.

[0009] Optionally, a second support seat is provided in the power conversion cabinet, and the rectifier module includes: a rectifier unit and a third capacitor; The second liquid cooling plate and the third capacitor are fixedly arranged on the second supporting seat, and the third capacitor is close to the second liquid cooling plate; The rectifying unit is fixedly arranged on the second liquid cooling plate; The secondary side of the transformer is electrically connected to the input end of the rectifier unit; The positive output terminal of the rectifier unit is electrically connected to the first end of the third capacitor and the first end of the first reactor; The negative output terminal of the rectifying unit is electrically connected to the second end of the third capacitor.

[0010] Optionally, each of the power conversion modules further includes a fourth capacitor, a first resistor and a fuse; The fourth capacitor is fixedly arranged below the second liquid cooling plate; The first resistor is fixedly arranged above the third capacitor; The fuse is fixedly arranged on the second liquid cooling plate; The second end of the first reactor is electrically connected to the first end of the first resistor and the first end of the fourth capacitor is electrically connected to the first end of the fuse; The second end of the fuse serves as the positive output end of the power conversion module; The negative output end of the rectifying unit is connected to the second end of the third capacitor, the second end of the first resistor and the second end of the fourth capacitor, and serves as the negative output end of the power conversion module.

[0011] Optionally, sound-absorbing cotton is provided on the top panel, front door panel, rear door panel and side door panels of the power conversion cabinet.

[0012] Optionally, a voltage sensor and a slave controller are also provided in the power conversion cabinet; The voltage sensor is fixedly arranged on the first supporting seat; The slave controller is fixedly arranged in the power conversion cabinet; The first end of the voltage sensor is electrically connected to the first end of the first capacitor and the positive input end of the inverter unit; The second end of the voltage sensor is electrically connected to the second end of the first capacitor and the negative input end of the inverter unit; The third terminal of the voltage sensor and the driving terminal of the inverter unit are electrically connected to the slave controller.

[0013] Optionally, there are multiple power conversion cabinets, and the hydrogen production power supply cabinet further includes: a control cabinet, which includes a control cabinet body, a main controller and a human-computer interaction screen; The main controller is arranged in the control cabinet; The human-machine interaction screen is arranged on the control cabinet; The human-machine interaction screen is electrically connected to the first end of the main controller; The second end of the master controller is electrically connected to each of the slave controllers.

[0014] Optionally, the hydrogen production power supply cabinet further includes: an interface cabinet, the interface cabinet including an interface cabinet body, an input positive copper bar, an input neutral copper bar, an input negative copper bar, an output positive copper bar and an output negative copper bar; The input positive copper bar, the neutral point copper bar, the input negative copper bar, the output positive copper bar and the output negative copper bar are arranged in the interface cabinet.

[0015] Compared with the prior art, the present application provides a hydrogen production power cabinet, including: a power conversion cabinet, the power conversion cabinet including: a power conversion cabinet body, and multiple power conversion modules, multiple liquid cooling devices and a heat exchanger arranged in the power conversion cabinet body, the input ends of each power conversion module are electrically connected in series, the output ends of each power conversion module are electrically connected in parallel, each liquid cooling device is in contact with each power conversion module, and the heat exchanger is used to cool the air flowing through the power conversion cabinet body. In the present application, by arranging multiple liquid cooling devices in a power conversion cabinet body including multiple parallel power conversion modules, each liquid cooling device is in contact with each power conversion module, so as to quickly dissipate the heat of the power conversion module, and by cooling the air flowing through the power conversion cabinet body by a heat exchanger, the heat dissipation effect can be effectively improved, and since there is no need to use an air-cooled heat dissipation device, the size of the cabinet body can be effectively reduced, and the floor space of the cabinet body can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0017] Figure 1 This is a front structural schematic diagram of a power conversion cabinet in a hydrogen production power cabinet provided in an embodiment of the present application; Figure 2 A schematic diagram of the side structure of a power conversion cabinet in a hydrogen production power cabinet provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a first support base and a device disposed on the first support base provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of a second support base and a device disposed on the second support base provided in an embodiment of the present application; Figure 5 A structural block diagram of a power conversion module provided in an embodiment of the present application; Figure 6 A schematic diagram of the connection relationship between the heat exchanger and the main liquid inlet pipe and the main liquid outlet pipe provided in an embodiment of the present application; Figure 7 A schematic diagram of the structure of a hydrogen production power supply cabinet including a plurality of power conversion cabinets, a control cabinet and an interface cabinet provided in an embodiment of the present application; Figure 8 This is a schematic diagram of the structure of the interface cabinet provided in the embodiment of the present application; Reference numerals: 100 - power conversion cabinet; 200 - control cabinet; 300 - interface cabinet; 110-power conversion cabinet; 120-power conversion module; 130-liquid cooling device; 140-heat exchanger; 150-first support base; 160-second support base; 170-slave controller; 180-power supply; 190-terminal block; 121-inverter module; 122-transformer; 123-rectifier module; 124-first reactor; 125-fourth capacitor; 126-first resistor; 127-fuse; 128-voltage sensor; 1291-first switch tube; 1292-second switch tube; 1221-inductor; 131 - first liquid cooling plate; 132 - second liquid cooling plate; 1211-first capacitor; 1212-inverter unit; 1213-second capacitor; 1231-rectifier unit; 1232-third capacitor; 141-main liquid inlet pipe; 1411-first main liquid inlet pipe; 1412-second main liquid inlet pipe; 1413-first docking hose; 142-main liquid outlet pipe; 1421-first main liquid outlet pipe; 1422-second main liquid outlet pipe; 1423-second docking hose; 151-first composite busbar; 152-aviation plug; 153-first copper busbar; 154-insulator; 161- second composite busbar; 162- second copper busbar; 210-control cabinet; 220-human-machine interaction screen; 310-interface cabinet; 320-input positive copper busbar; 330-input neutral copper busbar; 340-input negative copper busbar; 350-equalizing resistor; 360-smoothing reactor. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0023] like Figures 1 to 5 As shown, a hydrogen production power supply cabinet includes: a power conversion cabinet 100, the power conversion cabinet 100 includes: a power conversion cabinet body 110, and a plurality of power conversion modules 120, a plurality of liquid cooling devices 130 and a heat exchanger 140 arranged in the power conversion cabinet body 110; the input ends of the respective power conversion modules 120 are electrically connected in series; the output ends of the respective power conversion modules 120 are electrically connected in parallel; the respective liquid cooling devices 130 are in contact with the respective power conversion modules 120; and the heat exchanger 140 is used to cool the air flowing through the power conversion cabinet body 110.

[0024] In this embodiment, the multiple power conversion modules 120 are N power conversion modules 120, N is a positive integer greater than 1, preferably N is 2, the liquid cooling device 130 can be a water cooling device, the liquid cooling device 130 can include a liquid cooling plate and a liquid cooling pipe, etc., the heat exchanger 140 can be an air-water heat exchanger 140, and the input ends of each power conversion module 120 can divide the input voltage by being connected in series, and can reduce the input voltage of each power conversion module 120. Each liquid cooling device 130 can effectively dissipate heat for each power conversion module 120 by contacting with each power conversion module 120. The heat exchanger 140 intakes air at the bottom and exhausts air at the top, driving the air circulation in the power conversion cabinet 100, so that the remaining heat of each power conversion module 120 can be taken away by the heat exchanger 140 as the air circulates in the cabinet. By arranging the heat exchanger 140 in the power conversion cabinet 100, each power conversion module 120 can be further dissipated.

[0025] Compared with the prior art, the present application provides a hydrogen production power cabinet, including: a power conversion cabinet 100, the power conversion cabinet 100 includes: a power conversion cabinet 110, and a plurality of power conversion modules 120, a plurality of liquid cooling devices 130 and a heat exchanger 140 arranged in the power conversion cabinet 110, the input ends of the respective power conversion modules 120 are electrically connected in series, the output ends of the respective power conversion modules 120 are electrically connected in parallel, the respective liquid cooling devices 130 are in contact with the respective power conversion modules 120, and the heat exchanger 140 is used to cool the power conversion cabinet 110. In the present application, a plurality of liquid cooling devices 130 are provided in a power conversion cabinet 110 including a plurality of parallel power conversion modules 120, and each liquid cooling device 130 is in contact with each power conversion module 120 to quickly dissipate heat from the power conversion module 120. The air flowing through the power conversion cabinet 110 is cooled by a heat exchanger 140, which can effectively improve the heat dissipation effect. Moreover, since there is no need to adopt an air-cooled heat dissipation device, the size of the cabinet can be effectively reduced, and the floor space of the cabinet can be effectively reduced.

[0026] like Figure 1 , Figures 3 to 5 As shown, as an implementation mode, in the embodiment of the present application, each power conversion module 120 includes an inverter module 121, a transformer 122 and a rectifier module 123, and the liquid cooling device 130 includes a first liquid cooling plate 131, a second liquid cooling plate 132 and a first liquid cooling tube; the input ends of each inverter are electrically connected in series; the output end of the inverter is electrically connected to the primary side of the transformer 122; the secondary side of the transformer 122 is electrically connected to the input end of the rectifier module 123; the output ends of each rectifier module 123 are electrically connected in series; the first liquid cooling plate 131 is arranged in the inverter module 121; the first liquid cooling tube is arranged in the transformer 122; the second liquid cooling plate 132 is arranged in the rectifier module 123.

[0027] In this embodiment, the transformer 122 can be a high-frequency transformer 122, and the first liquid cooling tube can be a copper tube. By respectively arranging the first liquid cooling plate 131, the first liquid cooling tube and the second liquid cooling plate 132 in the inverter module 121, the transformer 122 and the rectifier module 123, the electronic components in the inverter module 121, the transformer 122 and the rectifier module 123 can be effectively cooled.

[0028] like Figure 1 and Figure 5 As shown, as an implementation mode, in the embodiment of the present application, each power conversion module 120 also includes: a first inductor 124, and the liquid cooling device 130 also includes a third liquid cooling plate and a second liquid cooling tube; the first inductor 124 is arranged in the power conversion cabinet 110; the positive output end of the rectifier module 123 is electrically connected to the first end of the first inductor 124; the third liquid cooling plate and the second liquid cooling tube are arranged in the first inductor 124.

[0029] In this embodiment, the second liquid cooling tube may be a copper tube. By arranging the third liquid cooling plate and the second liquid cooling tube in the first reactor 124 , the first reactor 124 can be effectively cooled.

[0030] like Figure 1 , Figure 3 and Figure 5 As shown, as an implementation mode, in the embodiment of the present application, a first support base 150 is arranged in the power conversion cabinet 110, and the inverter module 121 includes: a first capacitor 1211, an inverter unit 1212 and a second capacitor 1213; the first capacitor 1211 and the first liquid cooling plate 131 are fixedly arranged on the first support base 150; the inverter unit 1212 is fixedly arranged on one side of the first liquid cooling plate 131, and the first capacitor 1211 is close to the other side of the first liquid cooling plate 131; the second capacitor 1213 is fixedly arranged on the inverter unit 1212; the first end of the first capacitor 1211 is electrically connected to the positive input end of the inverter unit 1212; the second end of the first capacitor 1211 is electrically connected to the negative input end of the inverter unit 1212; the output end of the inverter unit 1212 is electrically connected to the primary side of the transformer 122 through the second capacitor 1213.

[0031] In this embodiment, the transformer 122 may have its own inductor, and the first output end of the inverter unit 1212 may be electrically connected to the first end of the second capacitor 1213, the second end of the second capacitor 1213 may be electrically connected to the first end of the inductor, the second end of the inductor may be electrically connected to the first end of the primary side of the transformer 122, and the second output end of the inverter unit 1212 may be electrically connected to the second end of the primary side of the transformer 122.

[0032] In this embodiment, the inverter unit 1212 may include four IGBTs (Insulated Gate Bipolar Transistor), and the first capacitor 1211 may be a supporting capacitor. By fixing the inverter unit 1212 on one side of the first liquid cooling plate 131, the devices in the inverter unit 1212 can be effectively cooled. By setting the first capacitor 1211 on the other side close to the first liquid cooling plate 131 and fixing the second capacitor 1213 on the inverter unit 1212 on one side of the first liquid cooling plate 131, the first capacitor 1211 and the second capacitor 1213 can be effectively cooled through the first liquid cooling plate 131.

[0033] In this embodiment, the first support seat 150 may also be provided with a first composite busbar 151, an aviation plug 152, a first copper busbar 153 and an insulator 154. The first composite busbar 151 is fixedly arranged on the first capacitor 1211; the aviation plug 152, the first copper busbar 153 and the insulator 154 are fixedly arranged on one side of the first support seat 150, and the first copper busbar 153 is close to the insulator 154.

[0034] like Figure 1 , Figure 4 and Figure 5 As shown, as an implementation mode, in the embodiment of the present application, a second support base 160 is arranged in the power conversion cabinet 110, and the rectifier module 123 includes: a rectifier unit 1231 and a third capacitor 1232; the second liquid cooling plate 132 and the third capacitor 1232 are fixedly arranged on the second support base 160, and the third capacitor 1232 is close to the second liquid cooling plate 132; the rectifier unit 1231 is fixedly arranged on the second liquid cooling plate 132; the secondary side of the transformer 122 is electrically connected to the input end of the rectifier unit 1231; the positive output end of the rectifier unit 1231 is electrically connected to the first end of the third capacitor 1232 and the first end of the first inductor 124; the negative output end of the rectifier unit 1231 is electrically connected to the second end of the third capacitor 1232.

[0035] In this embodiment, the rectifier unit 1231 may include four diodes or four IGBTs. Preferably, the rectifier unit 1231 includes four diodes. The third capacitor 1232 may be a supporting capacitor. By setting the third capacitor 1232 at a position close to the second liquid cooling plate 132 and by fixing the rectifier unit 1231 on the second liquid cooling plate 132, the third capacitor 1232 and the rectifier unit 1231 can be effectively cooled through the second liquid cooling plate 132.

[0036] In this embodiment, a second composite busbar 161 and a second copper busbar 162 may also be provided on the second support base 160 . The second composite busbar 161 is fixedly arranged above the rectifier unit 1231 and the third capacitor 1232 ; the second copper busbar 162 is fixedly arranged on one side of the second support base 160 .

[0037] like Figure 1 , Figure 4 and Figure 5 As shown, as an implementation mode, in the embodiment of the present application, each power conversion module 120 also includes a fourth capacitor 125, a first resistor 126 and a fuse 127; the fourth capacitor 125 is fixedly arranged below the second liquid cooling plate 132; the first resistor 126 is fixedly arranged above the third capacitor 1232; the fuse 127 is fixedly arranged on the second liquid cooling plate 132; the second end of the first inductor 124 is electrically connected to the first end of the first resistor 126 and the first end of the fourth capacitor 125 is electrically connected to the first end of the fuse 127; the second end of the fuse 127 serves as the positive output end of the power conversion module 120; the negative output end of the rectifier unit 1231 is connected to the second end of the third capacitor 1232, the second end of the first resistor 126 and the second end of the fourth capacitor 125, and serves as the negative output end of the power conversion module 120.

[0038] In this embodiment, the fourth capacitor 125, the first resistor 126 and the fuse 127 can be effectively cooled by the second liquid cooling plate 132. By setting the fuse 127 at the positive output end of the power conversion module 120, when the current output from the positive output end of the power conversion module 120 is too large, the fuse 127 can cut off the current by melting itself at high temperature, thereby protecting other devices connected to the fuse 127; the first resistor 126 and the fourth capacitor 125 can be used to filter the signal output by the rectifier unit 1231.

[0039] As an implementation mode, in the embodiment of the present application, sound-absorbing cotton is provided on the top panel, front door panel, rear door panel and side door panel of the power conversion cabinet 110 .

[0040] In this embodiment, by arranging sound-absorbing cotton on the top plate, front door plate, rear door plate and side door plates of the power conversion cabinet 110 , the noise of the power conversion cabinet 110 can be effectively reduced.

[0041] like Figure 1 , Figure 3 and Figure 5As shown, as an implementation mode, in the embodiment of the present application, a voltage sensor 128 and a slave controller 170 are also provided in the power conversion cabinet 110; the voltage sensor 128 is fixedly provided on the first support seat 150; the slave controller 170 is fixedly provided in the power conversion cabinet 110; the first end of the voltage sensor 128 is electrically connected to the first end of the first capacitor 1211 and the positive input end of the inverter unit 1212; the second end of the voltage sensor 128 is electrically connected to the second end of the first capacitor 1211 and the negative input end of the inverter unit 1212; the third end of the voltage sensor 128 and the driving end of the inverter unit 1212 are electrically connected to the slave controller 170. In this embodiment, the voltage sensor 128 and the slave controller 170 are not attached. Figure 5 is displayed in the

[0042] In this embodiment, the power conversion cabinet 100 may also be provided with a power supply 180 and a terminal block 190, and the power supply 180 can be used to supply power to the slave controller 170; each power conversion cabinet 100 may be provided with the same number of slave controllers 170 as the power conversion module 120, and the voltage sensor 128 can collect the voltage signal at the positive input terminal of the inverter unit 1212 and send the collected voltage signal to the slave controller 170, and the slave controller 170 controls the inverter unit 1212 according to the received voltage signal.

[0043] like Figure 5 As shown, in this embodiment, each power conversion module 120 may also include a first switch tube 1291 and a second switch tube 1292, the first end of the first switch tube 1291 is electrically connected to the first end of the voltage sensor 128, the first end of the first capacitor 1211 and the positive input end of the inverter unit 1212, the second end of the first switch tube 1291 in the first power conversion module 120 is used to connect to the positive input interface of the power supply and the first end of the second switch tube 1292 of the first power conversion module 120, the second end of the second switch tube 1292 in the first power conversion module 120 is connected to the second end of the voltage sensor 128, the second end of the first capacitor 1211, the negative input end of the inverter unit 1212 and the second end of the first switch tube 1291 and the first end of the second switch tube 1292 in the next power conversion module 120, and the third end of the first switch tube 1291 and the third end of the second switch tube 1292 in each power conversion module 120 can be connected to the slave controller 170.

[0044] In this embodiment, each power conversion module 120 may also be provided with a current sensor, the first end of the current sensor may be connected to the second end of the first inductor 124, the second end of the current sensor may be electrically connected to the first end of the first resistor 126 and the first end of the fourth capacitor 125 and the first end of the fuse 127, the current sensor may collect the current signal of the positive output end of the rectifier module 123 after passing through the first inductor 124, and send the collected current signal to the slave controller 170, and the slave controller 170 may control the inverter unit 1212 according to the received voltage signal and current signal.

[0045] like Figure 7 As shown, as an implementation mode, in the embodiment of the present application, the number of power conversion cabinets 100 is multiple, and the hydrogen production power supply cabinet also includes: a control cabinet 200, the control cabinet 200 includes a control cabinet body 210, a main controller and a human-computer interaction screen 220; the main controller is arranged in the control cabinet body 210; the human-computer interaction screen 220 is arranged on the control cabinet body 210; the human-computer interaction screen 220 is electrically connected to the first end of the main controller; the second end of the main controller is electrically connected to each slave controller 170.

[0046] In this embodiment, the control cabinet 200 can be arranged on one side of multiple power conversion cabinets 100, the number of power conversion cabinets 100 is M, M is a positive integer greater than 1, and preferably M is 13. The input ends of the power conversion modules 120 in each power conversion cabinet 100 are electrically connected in series, and the output ends of the power conversion modules 120 in each power conversion cabinet 100 are electrically connected in parallel. The control instructions can be sent to the main controller through the human-computer interaction screen 220, and the main controller then sends the received control instructions to each slave controller 170. Each slave controller 170 can send the received voltage signal or the voltage signal and the current signal to the main controller, and the main controller sends the received signal to the human-computer interaction interface, and the human-computer interaction interface displays the received signal.

[0047] like Figure 6As shown, in this embodiment, the liquid inlet end of each heat exchanger 140 in each power conversion cabinet 100 can be connected to the main liquid inlet pipe 141, and the liquid outlet end of each heat exchanger 140 is connected to the main liquid outlet pipe 142. There can be multiple main liquid inlet pipes 141 and main liquid outlet pipes 142. Each liquid inlet end of the heat exchanger 140 can be connected to each main liquid inlet pipe 141, and each liquid outlet end of the heat exchanger 140 is connected to each main liquid outlet pipe 142. Each main liquid inlet pipe 141 may include a first main liquid inlet pipe 1411 and a second main liquid inlet pipe 1412, and the first main liquid inlet pipe 1411 and the second main liquid inlet pipe 1412 are connected through a first docking hose 1413. Each main liquid outlet pipe 142 may include a first main liquid outlet pipe 1421 and a second main liquid outlet pipe 1422, and the first main liquid outlet pipe 1421 and the second main liquid outlet pipe 1422 are connected through a second docking hose 1423.

[0048] like Figure 7 and Figure 8 As shown, as an implementation mode, in the embodiment of the present application, the hydrogen production power supply cabinet also includes: an interface cabinet 300, the interface cabinet 300 includes an interface cabinet body 310, an input positive copper busbar 320, an input neutral point copper busbar 330, an input negative copper busbar 340, an output positive copper busbar and an output negative copper busbar; the input positive copper busbar 320, the neutral point copper busbar, the input negative copper busbar 340, the output positive copper busbar and the output negative copper busbar are arranged in the interface cabinet body 310.

[0049] In this embodiment, the interface cabinet 300 can be arranged in the middle of a plurality of power conversion cabinets 100, and each power conversion module 120 in each power conversion cabinet 100 can be connected as needed through an input positive copper bar 320, an input neutral copper bar 330, and an input negative copper bar 340, and each power conversion module 120 in each power conversion cabinet 100 can be connected as needed through an output positive copper bar and an output negative copper bar. The output positive copper bar and the output negative copper bar are not shown in the drawings.

[0050] like Figure 5 and Figure 8 As shown, in this embodiment, the interface cabinet 300 is also provided with a voltage equalizing resistor 350 and a smoothing inductor 360, the first end of the voltage equalizing resistor 350 is used to connect to the positive input interface of the power supply, the second end of the voltage equalizing resistor 350 is connected to the first end of the smoothing inductor 360, and the second end of the smoothing inductor 360 is connected to the positive input end of the first power conversion module 120.

[0051] The embodiments in this specification are described in a progressive manner, and each embodiment focuses on the For the differences between other embodiments, the same or similar parts between the embodiments may be referred to each other.

[0052] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrogen production power cabinet, characterized in that: include: A power conversion cabinet, the power conversion cabinet comprising: a power conversion cabinet body, and a plurality of power conversion modules, a plurality of liquid cooling devices and a heat exchanger arranged in the power conversion cabinet body; The input ends of the power conversion modules are electrically connected in series; The output ends of the power conversion modules are electrically connected in parallel; Each of the liquid cooling devices is in contact with each of the power conversion modules; The heat exchanger is used to cool the air flowing through the power conversion cabinet.

2. The hydrogen production power supply cabinet according to claim 1, characterized in that: Each of the power conversion modules includes an inverter module, a transformer and a rectifier module, and the liquid cooling device includes a first liquid cooling plate, a second liquid cooling plate and a first liquid cooling tube; The input ends of the inverters are electrically connected in series; The output end of the inverter is electrically connected to the primary side of the transformer; The secondary side of the transformer is electrically connected to the input end of the rectifier module; The output ends of the rectifier modules are electrically connected in series; The first liquid cooling plate is arranged in the inverter module; The first liquid cooling tube is arranged in the transformer; The second liquid cooling plate is arranged in the rectifier module.

3. The hydrogen production power supply cabinet according to claim 2, characterized in that: Each of the power conversion modules further includes: a first reactor, and the liquid cooling device further includes a third liquid cooling plate and a second liquid cooling tube; The first reactor is arranged in the power conversion cabinet; The positive output end of the rectifier module is electrically connected to the first end of the first reactor; The third liquid cooling plate and the second liquid cooling tube are arranged in the first reactor.

4. The hydrogen production power supply cabinet according to claim 3, characterized in that: A first support seat is arranged in the power conversion cabinet, and the inverter module comprises: a first capacitor, an inverter unit and a second capacitor; The first capacitor and the first liquid cooling plate are fixedly arranged on the first supporting seat; The inverter unit is fixedly disposed on one side of the first liquid cooling plate, and the first capacitor is close to the other side of the first liquid cooling plate; The second capacitor is fixedly arranged on the inverter unit; The first end of the first capacitor is electrically connected to the positive input end of the inverter unit; The second end of the first capacitor is electrically connected to the negative input end of the inverter unit; The output end of the inverter unit is electrically connected to the primary side of the transformer through the second capacitor.

5. The hydrogen production power supply cabinet according to claim 4, characterized in that: A second support seat is arranged in the power conversion cabinet, and the rectifier module comprises: a rectifier unit and a third capacitor; The second liquid cooling plate and the third capacitor are fixedly arranged on the second supporting seat, and the third capacitor is close to the second liquid cooling plate; The rectifying unit is fixedly arranged on the second liquid cooling plate; The secondary side of the transformer is electrically connected to the input end of the rectifier unit; The positive output terminal of the rectifier unit is electrically connected to the first end of the third capacitor and the first end of the first reactor; The negative output terminal of the rectifying unit is electrically connected to the second end of the third capacitor.

6. The hydrogen production power supply cabinet according to claim 5, characterized in that: Each of the power conversion modules further includes a fourth capacitor, a first resistor and a fuse; The fourth capacitor is fixedly arranged below the second liquid cooling plate; The first resistor is fixedly arranged above the third capacitor; The fuse is fixedly arranged on the second liquid cooling plate; The second end of the first reactor is electrically connected to the first end of the first resistor and the first end of the fourth capacitor is electrically connected to the first end of the fuse; The second end of the fuse serves as the positive output end of the power conversion module; The negative output end of the rectifying unit is connected to the second end of the third capacitor, the second end of the first resistor and the second end of the fourth capacitor, and serves as the negative output end of the power conversion module.

7. The hydrogen production power supply cabinet according to claim 6, characterized in that: The top plate, front door plate, rear door plate and side door plates of the power conversion cabinet are all provided with sound-absorbing cotton.

8. The hydrogen production power supply cabinet according to claim 6, characterized in that: The power conversion cabinet is also provided with a voltage sensor and a slave controller; The voltage sensor is fixedly arranged on the first supporting seat; The slave controller is fixedly arranged in the power conversion cabinet; The first end of the voltage sensor is electrically connected to the first end of the first capacitor and the positive input end of the inverter unit; The second end of the voltage sensor is electrically connected to the second end of the first capacitor and the negative input end of the inverter unit; The third terminal of the voltage sensor and the driving terminal of the inverter unit are electrically connected to the slave controller.

9. The hydrogen production power supply cabinet according to claim 8, characterized in that: The number of the power conversion cabinets is multiple, and the hydrogen production power supply cabinet further includes: a control cabinet, the control cabinet includes a control cabinet body, a main controller and a human-computer interaction screen; The main controller is arranged in the control cabinet; The human-machine interaction screen is arranged on the control cabinet; The human-computer interaction screen is electrically connected to the first end of the main controller; The second end of the master controller is electrically connected to each of the slave controllers.

10. The hydrogen production power supply cabinet according to any one of claims 1 to 9, characterized in that: The hydrogen production power supply cabinet further comprises: an interface cabinet, the interface cabinet comprising an interface cabinet body, an input positive copper bar, an input neutral copper bar, an input negative copper bar, an output positive copper bar and an output negative copper bar; The input positive copper bar, the neutral point copper bar, the input negative copper bar, the output positive copper bar and the output negative copper bar are arranged in the interface cabinet.

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