Modularized pulse magnet liquid cooling power supply device

Abstract

The invention discloses a modularized pulse magnet liquid cooling power supply device, which solves the problems of large structural size, low integration level, poor vibration resistance effect and the like of the existing power supply device. The device comprises a frame, a vertical plate unit, a top cover, an input power distribution unit, an output power distribution unit, a liquid cooling power unit, a liquid cooling self-sealing plug, an energy storage capacitor unit, a capacitor bus lamination unit, a chopping control circuit unit and an output lamination bus unit. The vertical plate unit is mounted in the frame; the top cover is mounted at the top of the frame; the input power distribution unit and the output power distribution unit are installed on the two sides of the frame respectively. The liquid cooling power unit is installed on the vertical plate unit, and the liquid cooling self-sealing socket is in butt joint with the liquid cooling self-sealing plug. The output laminated bus unit is positioned below the liquid cooling power unit and is electrically connected with the liquid cooling power unit; the capacitor bus lamination unit is positioned above the liquid cooling power unit and is electrically connected with the liquid cooling power unit; the energy storage capacitor unit is electrically connected with the capacitor bus lamination unit; and the chopping control circuit unit is electrically connected with the liquid cooling power unit.

Description

Technical Field

[0001] This invention relates to a power supply device, specifically a modular pulse magnet liquid-cooled power supply device. Background Technology

[0002] A pulsed magnet power supply is a specialized power supply that provides a brief, high-intensity pulsed current to a load pulsed magnet, used in the accelerator industry. Electrically, pulsed magnet power supplies are characterized by high peak power, energy storage and discharge, and fast edge response. Structurally, they are designed around low inductance, modularity, efficient heat dissipation, and robust vibration resistance. Furthermore, the mechanical vibration and noise generated during operation are inherent characteristics of pulsed magnet power supplies, primarily stemming from the powerful electrodynamic force generated by the large pulsed current, and secondarily from the magnetostrictive effect. These effects are critical issues that must be carefully analyzed and addressed in system design and application.

[0003] Existing pulse magnet power supplies are mainly liquid-cooled pulse magnet power supplies, which are large in size and weight, and their functional areas are relatively dispersed. They also have problems such as low overall integration, poor vibration resistance, large circuit parasitic parameters, and unsatisfactory electrical performance. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems of existing pulse magnet liquid-cooled power supplies, such as large overall structural size, lack of compactness, low integration and poor vibration resistance, and to provide a modular pulse magnet liquid-cooled power supply device.

[0005] To achieve the above objectives, the technical solution provided by this invention is as follows: A modular pulse magnet liquid-cooled power supply device, characterized by: It includes a frame, upright plate unit, top cover, input power distribution unit, output power distribution unit, liquid-cooled power unit, self-sealing liquid-cooled plug, energy storage capacitor unit, capacitor bus stacked unit, chopper control circuit unit and output stacked bus unit; The frame is a U-shaped skeleton structure; the upright plate unit is installed inside the U-shaped skeleton structure, and its upper end face is flush with the opening end of the U-shaped skeleton structure; the top cover is installed at the opening end of the U-shaped skeleton structure. The input power distribution unit is installed on one side of the frame and perpendicular to the vertical plate unit; the output power distribution unit is installed on the other side of the frame opposite to the input power distribution unit; the liquid-cooled power unit is installed in the middle of one side of the vertical plate unit, and a self-sealing liquid-cooled socket is installed on it. The self-sealing liquid-cooled socket extends through the output power distribution unit and connects to the self-sealing liquid-cooled plug. The self-sealing liquid-cooled plug is used to connect external liquid-cooling equipment; the output stacked busbar unit is installed on the vertical plate unit, located below the liquid-cooled power unit, with its input end electrically connected to the liquid-cooled power unit and its output end extending through the output power distribution unit for connecting user equipment. The capacitor bus stack unit is mounted on the vertical plate unit, located above the liquid-cooled power unit, and electrically connected to the liquid-cooled power unit; the energy storage capacitor unit is mounted on the upper part of the other side of the vertical plate unit and electrically connected to the capacitor bus stack unit; the chopper control circuit unit is mounted on the side of the liquid-cooled power unit away from the vertical plate unit, with one end electrically connected to the liquid-cooled power unit and the other end extending through the input power distribution unit for connecting to the external control display unit.

[0006] Furthermore, the upright plate unit includes an upright plate, a first mounting plate and a second mounting plate mounted on the upright plate; The liquid-cooled power unit is installed in the middle of one side of the vertical plate, and the output stacked bus unit is installed in the lower part of one side of the vertical plate through two insulators; the upper part of the vertical plate is provided with an L-shaped notch, the capacitor bus stacked unit is connected to the upper part of one side of the vertical plate through a first bend, and the energy storage capacitor unit is installed in the upper part of the other side of the vertical plate and is electrically connected to the capacitor bus stacked unit through the L-shaped notch. The first mounting plate and the second mounting plate are both located on the lower part of the side of the upright plate where the energy storage capacitor unit is mounted; wherein, the first mounting plate is located near the output power distribution unit and has an auxiliary power supply transformer and two power circuit boards mounted on it; the second mounting plate is located near the input power distribution unit and has a drive circuit board mounted on it. One end of the auxiliary power supply transformer is electrically connected to the output power distribution unit, and the other end is electrically connected to the input terminals of two power supply circuit boards respectively; the output terminals of the two power supply circuit boards are electrically connected to the drive circuit board and the chopper control circuit unit respectively; the drive circuit board is provided with a first optical fiber connector, which extends through the input power distribution unit and is used to output optical control signals.

[0007] Furthermore, the liquid-cooled power unit includes a liquid cooling plate, a plurality of first IGBT modules, a rectifier bridge, and a second IGBT module mounted on the liquid cooling plate; The liquid cooling plate is installed in the middle of one side of the vertical plate, and multiple first IGBT modules are installed side by side on the side of the liquid cooling plate away from the vertical plate; one end of each first IGBT module is electrically connected to the capacitor bus stack unit, and the other end is electrically connected to the input end of the output stack unit; each first IGBT module is equipped with a drive adapter circuit board that is electrically connected to the chopper control circuit unit. The rectifier bridge and the second IGBT module are respectively installed on the side of the liquid cooling plate near the vertical plate and located in the L-shaped notch; one end of the rectifier bridge is electrically connected to the output power distribution unit, and the other end is electrically connected to one end of the second IGBT module; the other end of the second IGBT module is electrically connected to the capacitor bus stack unit. The liquid cooling plate has two interconnected internal flow channels; the end of the liquid cooling plate near the output power distribution unit has two adapters that are respectively connected to the two internal flow channels, and each adapter is equipped with the self-sealing liquid cooling socket.

[0008] Furthermore, a first absorption capacitor, a second absorption capacitor, and two inductors are also installed on the side of the liquid cooling plate near the vertical plate; the first absorption capacitor is mounted on the liquid cooling plate through a first insulating bracket and is connected in parallel with the rectifier bridge; the second absorption capacitor is mounted on the liquid cooling plate through a second insulating bracket and is connected in parallel with the second IGBT module; the two inductors are connected in series between the rectifier bridge and the second IGBT module. Two temperature relays are also installed on the side of the liquid cooling plate away from the vertical plate, and the two temperature relays are electrically connected to the chopper control circuit unit respectively.

[0009] Furthermore, the energy storage capacitor unit includes a third mounting plate, an insulating plate, and multiple sets of electrolytic capacitors; the third mounting plate is installed on the upper part of the upright plate on the side away from the liquid-cooled power unit; the insulating plate is located on the side of the third mounting plate close to the upright plate, and has multiple sets of mounting holes corresponding to the electrolytic capacitors; the multiple sets of electrolytic capacitors are arranged in pairs side by side, with one end passing through the corresponding mounting hole and fixed on the third mounting plate, and the other end passing through the L-shaped notch and electrically connected to the capacitor bus stack unit respectively.

[0010] Furthermore, a first insulating sheet is provided between the third mounting plate and the insulating plate; the third mounting plate and the first insulating sheet are respectively provided with multiple ventilation holes; The two ends of the third mounting plate are respectively mounted on the upright plate through the second corner piece; the side of the second corner piece connected to the third mounting plate is provided with a strip hole, the length direction of which is consistent with the length direction of the electrolytic capacitor.

[0011] Furthermore, the capacitor bus stack unit includes a bus package stack, multiple sets of ceramic voltage equalizing resistors and multiple third absorption capacitors mounted on the bus package stack; The top of the busbar encapsulation stack is connected to the upper part of one side of the upright plate through the first bend, and an insulator is provided at the connection point; the end of the busbar encapsulation stack near the input power distribution unit is provided with a negative terminal and a positive terminal, which are electrically connected to the other end of the second IGBT module respectively. The multiple sets of ceramic voltage equalizing resistors and multiple third absorption capacitors are all located on the side of the busbar encapsulation stack away from the vertical plate; the multiple sets of ceramic voltage equalizing resistors are connected one-to-one with the other end of the multiple sets of electrolytic capacitors; the number of multiple third absorption capacitors is consistent with the number of multiple first IGBT modules and the number of sets of ceramic voltage equalizing resistors, and the multiple third absorption capacitors are electrically connected to one end of the corresponding first IGBT module.

[0012] Furthermore, the chopper control circuit unit includes a fourth mounting plate and two chopper control circuit boards connected in series; the fourth mounting plate is mounted on the side of the liquid cooling plate away from the vertical plate via multiple support pillars; the chopper control circuit boards are mounted on the side of the fourth mounting plate away from the liquid cooling plate, and a second insulating sheet is provided between them; each chopper control circuit board is provided with multiple sets of terminals corresponding to multiple drive adapter circuit boards; a second optical fiber connector is provided at the end of the chopper control circuit board near the input power distribution unit, and the second optical fiber connector extends through the input power distribution unit for connecting to an external control display unit; two temperature relays are electrically connected to the chopper control circuit boards respectively.

[0013] Furthermore, the output stacked bus unit includes an output stacked bus and multiple bus pins arranged on top of the output stacked bus with positive and negative poles arranged alternately; the multiple bus pins are the input terminals of the output stacked bus, which are respectively connected to multiple first IGBT modules; the end of the output stacked bus closest to the output power distribution unit is its output terminal, which extends out of the output power distribution unit and is mounted on the output power distribution unit through an insulating clamping assembly.

[0014] Furthermore, the input power distribution unit includes an input panel and a fault indicator light mounted on the input panel; the input panel is mounted on one side of the frame, and the input panel is provided with two fiber optic connector through-hole windows and multiple first heat dissipation holes; the two fiber optic connector through-hole windows are respectively used for the first fiber optic connector and the second fiber optic connector to pass through; the fault indicator light is electrically connected to the drive circuit board. The output power distribution unit includes an output panel, a main power connector and an insulating mounting box mounted on the output panel, and a control power connector mounted inside the insulating mounting box. The output panel is mounted on the opposite side of the frame from the input panel, and the output panel has two liquid-cooled socket through-hole windows and multiple second heat dissipation holes. The two liquid-cooled socket through-hole windows are respectively used for the two self-sealing liquid-cooled sockets to pass through. One end of the main power connector is used to connect to an external power supply device, and the other end is electrically connected to one end of the rectifier bridge. One end of the control power connector is used to connect to an external power supply device, and the other end is electrically connected to one end of the auxiliary power supply transformer. The insulating clamping assembly includes an L-shaped first clamping member and a second clamping member; one side of the first clamping member and the second clamping member are respectively mounted on the output panel, and the other side is respectively attached to the two sides of the output end of the output stacked busbar and connected by bolts; a limit nut is sleeved on the bolt, and the limit nut is located between the first clamping member and the second clamping member.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: 1. The present invention adopts a modular structural design, integrating all functional components into a chassis consisting of a frame, upright plate unit and top cover, which greatly improves the overall integration of the power supply device and thus reduces the external size of the power supply device.

[0016] 2. This invention places all power components as close as possible to or installs them on both sides of the liquid cooling plate, thereby improving the utilization rate of the liquid cooling plate and the power density of the module, and thus shortening the circuit path.

[0017] 3. The energy storage capacitor unit and the output stacked bus unit of the present invention both adopt a closed stacked bus design, which provides a uniform current distribution and a low inductance path for the power supply device.

[0018] 4. In response to the strong pulse electrodynamic force and magnetostrictive effect generated by the pulsed high current in the vertical plate unit and the output power distribution unit, the present invention reinforces and supports the capacitor bus stack unit with the first bend and insulator. At the same time, the connection between the output end of the output stack bus unit and the output power distribution unit is clamped and fixed with an insulating clamping assembly. This provides anti-vibration reinforcement and prevents deformation of the power supply device, thereby improving its anti-vibration effect.

[0019] 5. The present invention adopts an odd-even alternating parallel connection of the bus pins of the first IGBT module and the output stacked bus unit, which effectively reduces the proximity effect and makes the DC output current sharing of the power supply better.

[0020] 6. The functional components of this invention are relatively independent, making them easy to disassemble and maintain, and the internal layout areas have clear functions.

[0021] 7. The main power input and control power input of the present invention adopt aviation plug connection, which improves the operation efficiency of the power supply device electrical connection and facilitates the operation and maintenance of the device.

[0022] 8. The present invention connects the external liquid cooling equipment and the liquid cooling plate using a structure of self-sealing liquid cooling plug and self-sealing liquid cooling socket, which improves the operation and maintenance efficiency and reliability of the device. When performing operation and maintenance on the power supply device, it is only necessary to disconnect the self-sealing liquid cooling plug and self-sealing liquid cooling socket, and the liquid cooling connector of the self-sealing liquid cooling plug can seal the liquid in the liquid cooling plate. Attached Figure Description

[0023] Figure 1 This is a structural illustration of an embodiment of the present invention. Figure 1 ; Figure 2 This is a structural illustration of an embodiment of the present invention. Figure 2 ; Figure 3 This is an exploded structural diagram of an embodiment of the present invention; Figure 4 This is a schematic diagram of the framework structure of an embodiment of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the framework structure of an embodiment of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the input power distribution unit in an embodiment of the present invention; Figure 7 This is a schematic diagram of the output power distribution unit in an embodiment of the present invention; Figure 8 This is a schematic diagram of the liquid-cooled power unit in an embodiment of the present invention. Figure 1 ; Figure 9 This is a schematic diagram of the liquid-cooled power unit in an embodiment of the present invention. Figure 2 ; Figure 10 An exploded view of the energy storage capacitor unit in an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the capacitor bus stack unit in an embodiment of the present invention; Figure 12 This is a schematic diagram of the chopper control circuit mounting unit in an embodiment of the present invention; Figure 13 This is a schematic diagram of the output stacked bus unit in an embodiment of the present invention.

[0024] The annotations in the attached figures are explained as follows: 1-Frame; 2-Upright plate unit, 20-Upright plate, 21-First corner bend, 22-Insulator, 23-Insulator, 24-First mounting plate, 241-Auxiliary power supply transformer, 242-Two power circuit boards, 25-Second mounting plate, 251-Drive circuit board, 252-First fiber optic connector; 3-Top cover; 4-Input power distribution unit, 41-Input panel, 411-Fiber optic connector through-hole window, 412-First heat dissipation hole, 42-Fault indicator light; 43-Front 5-Output power distribution unit; 51-Output panel; 511-Liquid-cooled socket through-hole window; 512-Second heat dissipation hole; 52-Main power connector; 53-Insulation fixing box; 54-Control power connector; 55-Rear panel handle; 56-First clamping component; 57-Second clamping component; 58-Limit nut; 6-Liquid-cooled power unit; 61-Liquid cooling plate; 62-Support column; 63-First IGBT module; 631-Drive adapter circuit board; 64-Temperature relay; 65 - Adapter, 651- Self-sealing liquid-cooled socket, 66- Rectifier bridge, 661- First insulating bracket, 662- First absorption capacitor, 67- Inductor, 68- Second IGBT module, 681- Second insulating bracket, 682- Second absorption capacitor; 7- Self-sealing liquid-cooled plug; 8- Energy storage capacitor unit, 81- Third mounting plate, 811- Ventilation hole, 82- Second bend, 821- Strip hole, 83- First insulating sheet, 84- Insulating plate, 85- Electrolytic capacitor Capacitor, 851-Nylon hexagonal nut; 9-Capacitor bus stack unit, 91-Busbar encapsulation stack, 911-Negative terminal, 912-Positive terminal, 92-Ceramic equalizing resistor, 93-Third absorption capacitor; 10-Chopper control circuit unit, 101-Fourth mounting plate, 102-Second insulating sheet, 103-Chopper control circuit board, 104-Second fiber optic connector; 11-Output stack bus unit, 111-Output stack bus, 112-Busbar pin. Detailed Implementation

[0025] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides a modular pulse magnet liquid-cooled power supply device, including a frame 1, a vertical plate unit 2, a top cover 3, an input power distribution unit 4, an output power distribution unit 5, a liquid-cooled power unit 6, a self-sealing liquid-cooled plug 7, an energy storage capacitor unit 8, a capacitor bus stacked unit 9, a chopper control circuit unit 10, and an output stacked bus unit 11.

[0027] Frame 1 serves as the overall carrier of the power supply unit, acting as the skeleton for the coordinated installation of various functional units. In this embodiment, frame 1 is an open-welded U-shaped skeleton structure with a notch on the top surface. The upright plate unit 2 is inserted through the notch at the top of frame 1 and then secured using countersunk screws on its front and rear surfaces, with its upper surface flush with the open end of the U-shaped skeleton structure. The upright plate unit 2 serves as the mounting carrier for the auxiliary power supply transformer 241, power circuit board 242, and drive circuit board 251. The structure and insulators used simultaneously reinforce the capacitor busbar stacked unit 9 and the output busbar stacked unit 11. The top cover 3 is installed at the open end of the U-shaped skeleton structure to strengthen the mechanical structure of the power supply unit.

[0028] The input power distribution unit 4 is installed on one side of the frame 1 and is perpendicular to the upright plate unit 2. The input power distribution unit 4 is used for ventilation and heat dissipation of the power supply device, status indication, and providing a connection window for fiber optic signals.

[0029] The output power distribution unit 5 is installed on the other side of the frame 1 opposite to the input power distribution unit 4. It is used to install the AC three-phase 380V power input socket, the control signal socket, provide a self-sealing liquid-cooled connector window, and clamp and fix the output end of the output stacked bus unit 11.

[0030] The liquid-cooled power unit 6 is installed in the middle of one side of the vertical plate unit 2 for heat dissipation of the power conversion device; a self-sealing liquid-cooled socket 651 is installed on the liquid-cooled power unit 6, which extends through the output power distribution unit 5 and connects to the self-sealing liquid-cooled plug 7.

[0031] The self-sealing liquid cooling plug 7 is used to connect to external liquid cooling equipment for the inflow and outflow of refrigerant. At the same time, the self-sealing liquid cooling plug 7 and the self-sealing liquid cooling socket 651 can seal their respective water ports when disassembled.

[0032] The output stacked bus unit 11 is mounted on the vertical plate unit 2. It is located below the liquid-cooled power unit 6 and its input end is electrically connected to the liquid-cooled power unit 6. Its output end extends through the output power distribution unit 5 and is used to connect to user equipment.

[0033] The capacitor bus stacked unit 9 is mounted on the vertical plate unit 2, located above the liquid-cooled power unit 6, and electrically connected to the liquid-cooled power unit 6. The energy storage capacitor unit 8 is mounted on the upper part of the other side of the vertical plate unit 2 and electrically connected to the capacitor bus stacked unit 9, used to supply power to the liquid-cooled power unit 6 through the capacitor bus stacked unit 9. In this embodiment, both the energy storage capacitor unit 8 and the output stacked bus unit 11 adopt a closed stacked busbar design, providing a uniform current distribution and a low-inductance path for the power supply, effectively improving the electrical performance indicators of the power supply.

[0034] The chopper control circuit unit 10 is installed on the side of the liquid-cooled power unit 6 away from the vertical plate unit 2. One end of it is electrically connected to the liquid-cooled power unit 6, and the other end extends through the input power distribution unit 4 to connect to the external control display unit.

[0035] In terms of electrical principle, this invention adopts AC380V three-phase input, which is converted from AC to DC by three-phase uncontrolled rectification, and then DC pulse output is achieved by BOOST boost circuit (second IGBT module 68) and connected to energy storage capacitor unit 8 and chopper control circuit unit 10.

[0036] Meanwhile, the modular structural design integrates all functional components into the chassis, significantly improving the overall integration of the power supply unit and thus reducing its size. This power supply unit is small in size, has high power density, and its relatively independent functional components facilitate disassembly and maintenance, with a clearly defined internal layout.

[0037] like Figure 4 , Figure 5 As shown, the upright plate unit 2 in this embodiment includes an upright plate 20, a first mounting plate 24 and a second mounting plate 25 mounted on the upright plate 20.

[0038] The liquid-cooled power unit 6 is installed in the middle of one side of the vertical plate 20, and the output multilayer bus unit 11 is installed in the lower part of one side of the vertical plate 20 through two insulators 23. The upper part of the vertical plate 20 is provided with an L-shaped notch, and the capacitor bus multilayer unit 9 is connected to the upper part of one side of the vertical plate 20 through the first bend 21. The energy storage capacitor unit 8 is installed in the upper part of the other side of the vertical plate 20 and is electrically connected to the capacitor bus multilayer unit 9 through the L-shaped notch.

[0039] Both the first mounting plate 24 and the second mounting plate 25 are located on the lower part of the side of the upright plate 20 where the energy storage capacitor unit 8 is mounted. The first mounting plate 24 is positioned near the output power distribution unit 5, and is riveted with mounting nuts and houses an auxiliary power supply transformer 241 and two power circuit boards 242. The second mounting plate 25 is positioned near the input power distribution unit 4, and is riveted with a mounting support. A drive circuit board 251, used for boost chopper control and drive, is mounted on this support. One end of the auxiliary power supply transformer 241 is electrically connected to the output power distribution unit 5, and the other end is electrically connected to the input terminals of the two power circuit boards 242. The output terminals of the two power circuit boards 242 are electrically connected to the drive circuit board 251 and the chopper control circuit unit 10, respectively. The auxiliary power supply transformer 241 and the two power circuit boards 242 are used to convert the input control power supply of the power device into the power supply specifications required for control. Both power circuit boards 242 output DC 48V, providing DC 48V auxiliary power to the drive circuit board 251 and the chopper control circuit unit 10, thereby ensuring power supply capacity.

[0040] The drive circuit board 251 is provided with a first optical fiber connector 252, which extends through the input power distribution unit 4 and is used to output optical control signals.

[0041] like Figure 6 As shown, the input power distribution unit 4 includes an input panel 41 and a fault indicator light 42 mounted on the input panel 41. The input panel 41 is mounted on one side of the frame 1, and has two fiber optic connector through-hole windows 411 and multiple first heat dissipation holes 412. The two fiber optic connector through-hole windows 411 are respectively used for the first fiber optic connector 252 and the second fiber optic connector 104 to pass through; the fault indicator light 42 is electrically connected to the drive circuit board 251. Additionally, the input panel 41 is also equipped with two front panel handles 43 and corresponding safety labels as required.

[0042] like Figure 7 As shown, the output power distribution unit 5 includes an output panel 51, a main power connector 52 and an insulating mounting box 53 mounted on the output panel 51, and a control power connector 54 mounted inside the insulating mounting box 53. In accordance with the safety withstand voltage requirements of this power supply device, the control power connector 54 is installed inside the insulating mounting box 53 for enhanced insulation. Additionally, the output panel 51 is also equipped with two rear panel handles 55 and corresponding safety labels, as required.

[0043] The output panel 51 is mounted on the opposite side of the frame 1 from the input panel 41, and the output panel 51 has two liquid-cooled socket through-hole windows 511 and multiple second heat dissipation holes 512; the two liquid-cooled socket through-hole windows 511 are respectively used for the two self-sealing liquid-cooled sockets 651 to pass through. One end of the main power connector 52 is used to connect to the external power supply equipment (main power AC three-phase three-wire 380V input), and the other end is connected to the three electrodes on the rectifier bridge 66. One end of the control power connector 54 is used to connect to the external power supply equipment (control power AC three-phase three-wire 380V input), and the other end is electrically connected to one end of the auxiliary power supply transformer 241. In this embodiment, both the main power input and the control power input are connected by connectors, which improves the operational efficiency of the power supply device's electrical connection and facilitates the operation and maintenance of the device.

[0044] The insulating clamping assembly includes an L-shaped first clamping member 56 and a second clamping member 57; one side of the first clamping member 56 and the second clamping member 57 are respectively mounted on the output panel 51, and the side is provided with an elongated hole for adjusting its mounting position on the output panel 51 according to the position of the output stacked busbar 111.

[0045] The other sides of the first clamping member 56 and the second clamping member 57 respectively abut against the two sides of the output end of the output stacked busbar 111 extending out of the output panel 51 and are connected by bolts. A limiting nut 58 is fitted on the bolt. The limiting nut 58 is located between the first clamping member 56 and the second clamping member 57, and its thickness is slightly less than the thickness of the output stacked busbar 111. The limiting nut 58 can prevent the first clamping member 56 and the second clamping member 57 from cracking due to excessive deformation after the screw is locked. It also avoids applying excessive clamping force to the output stacked busbar unit 11, which could cause it to be damaged by pressure.

[0046] like Figure 8 , Figure 9 As shown, the liquid-cooled power unit 6 includes a liquid cooling plate 61, eight first IGBT modules 63 mounted on the liquid cooling plate 61, a rectifier bridge 66, and a second IGBT module 68 for the BOOST boost circuit. IGBT (Insulated Gate Bipolar Transistor).

[0047] The liquid cooling plate 61 is installed in the middle of one side of the upright plate 20, and eight first IGBT modules 63 are installed side by side from left to right on the side of the liquid cooling plate 61 away from the upright plate 20; one end of each first IGBT module 63 is electrically connected to the capacitor bus stack unit 9, and the other end is electrically connected to the input end of the output stack unit 11; each first IGBT module 63 is soldered with a drive adapter circuit board 631 that is electrically connected to the chopper control circuit unit 10.

[0048] The rectifier bridge 66 and the second IGBT module 68 are respectively installed on the side of the liquid cooling plate 61 near the vertical plate 20 and located in the L-shaped notch; one end of the rectifier bridge 66 is electrically connected to the output power distribution unit 5, and the other end is electrically connected to one end of the second IGBT module 68; the other end of the second IGBT module 68 is electrically connected to the capacitor bus stack unit 9.

[0049] The liquid-cooled plate 61 has two interconnected internal flow channels, each of which is a cylindrical flow channel. The inlet and outlet of the coolant are located on the same end face of the liquid-cooled plate 61. At the end of the liquid-cooled plate 61 near the output power distribution unit 5, there are two adapters 65 that communicate with the two internal flow channels respectively. Each adapter 65 is equipped with a self-sealing liquid-cooled socket 651. This embodiment uses a structure of self-sealing liquid-cooled plug 7 and self-sealing liquid-cooled socket 651 for connection, improving the operation and maintenance efficiency and reliability of the device. When performing operation and maintenance on the power supply device, simply disconnect the self-sealing liquid-cooled plug 7 and the self-sealing liquid-cooled socket 651; the liquid-cooling connector on the self-sealing liquid-cooled socket 651 will then seal the liquid inside the liquid-cooled plate 61.

[0050] On the side of the liquid cooling plate 61 near the vertical plate 20, a first absorption capacitor 662, a second absorption capacitor 682, and two inductors 67 are also installed. The first absorption capacitor 662 is mounted on the liquid cooling plate 61 via an L-shaped first insulating bracket 661 and is connected in parallel with the rectifier bridge 66. The second absorption capacitor 682 is mounted on the liquid cooling plate 61 via an L-shaped second insulating bracket 681 and is connected in parallel with the second IGBT module 68. The first absorption capacitor 662 and the second absorption capacitor 682 are used to suppress voltage spikes and oscillations generated by the power supply during switching, thereby protecting the rectifier bridge 66 and the second IGBT module 68 and reducing electromagnetic interference. The two inductors 67 are connected in series between the rectifier bridge 66 and the second IGBT module 68. The inductors 67 are DC-side smoothing inductors, which can improve the current waveform, reduce harmonics, maintain current continuity, and improve the stability of the power supply operation.

[0051] Two temperature relays 64 are also installed on the side of the liquid cooling plate 61 away from the vertical plate 20. The two temperature relays 64 are electrically connected to the chopper control circuit unit 10. In this embodiment, by arranging power devices on both sides of the liquid cooling plate 61, the utilization rate of the liquid cooling plate 61 and the power density of the module are improved, the circuit path is shortened, and the performance indicators of the power supply device are improved.

[0052] like Figure 10 As shown, the energy storage capacitor unit 8 includes a third mounting plate 81, an insulating plate 84, and eight groups (16 in total) of electrolytic capacitors 85. The third mounting plate 81 is installed on the upper part of the upright plate 20 away from the liquid-cooled power unit 6, serving as the main support component of the energy storage capacitor unit 8. Its bottom has 16 circular mounting holes for the electrolytic capacitors 85 and multiple ventilation holes 811. The insulating plate 84 is located on the side of the third mounting plate 81 closest to the upright plate 20, and has multiple sets of mounting holes corresponding to the electrolytic capacitors 85, providing auxiliary support for the electrolytic capacitors 85. The eight groups of electrolytic capacitors 85 are arranged in pairs, side by side. The electrolytic capacitors 85 are used for energy storage and to provide power to the first IGBT module 63. One end of each electrolytic capacitor 85 passes through the corresponding mounting hole and is fixed to the third mounting plate 81 by a nylon hexagonal nut 851. The other end passes through an L-shaped notch and is electrically connected to the capacitor busbar stacked unit 9.

[0053] A first insulating sheet 83 is also provided between the third mounting plate 81 and the insulating plate 84. The first insulating sheet 83 is made of polypropylene and is used to enhance the insulation function of the electrolytic capacitor 85 during the installation process. The first insulating sheet 83 is also provided with multiple ventilation holes 811.

[0054] Both ends of the third mounting plate 81 are respectively mounted on the upright plate 20 through the second bend member 82; the side of the second bend member 82 connected to the third mounting plate 81 is provided with a strip hole 821, the length direction of which is consistent with the length direction of the electrolytic capacitor 85, so that the position of the electrolytic capacitor 85 in the length direction can be adjusted when the energy storage capacitor unit 8 is used in the device.

[0055] like Figure 11 As shown, the capacitor busbar stack unit 9 cooperates with the energy storage capacitor unit 8, including a busbar encapsulation stack 91, eight sets of ceramic equalizing resistors 92 and eight third absorption capacitors 93 mounted on the busbar encapsulation stack 91. During installation, the top of the busbar encapsulation stack 91 is connected to the upper part of one side of the upright plate 20 through a first bend 21, and an insulator 22 is provided at the connection point; the first bend 21 and the insulator 22 are provided to support and reinforce the capacitor busbar stack unit 9. The end of the busbar encapsulation stack 91 near the input power distribution unit 4 is provided with a negative terminal 911 and a positive terminal 912, which are electrically connected to the other end of the second IGBT module 68 through cables.

[0056] The eight sets of ceramic equalizing resistors 92 and the eight third absorption capacitors 93 are all located on the side of the busbar encapsulation stack 91 away from the vertical plate 20; the eight sets of ceramic equalizing resistors 92 are installed on the electrode holes of the electrolytic capacitor stack corresponding to the eight sets of electrolytic capacitors 85; the ceramic equalizing resistors 92 can discharge the busbar electrolytic capacitors when the system is shut down and the power is cut off, and the resistance value takes into account the equalizing effect, the discharge time and the control of the resistance power.

[0057] The number of multiple third absorption capacitors 93 is consistent with the number of multiple first IGBT modules 63 and the number of groups of ceramic voltage equalizing resistors 92. The multiple third absorption capacitors 93 are respectively connected to the electrodes of the corresponding first IGBT module 63. This installation method effectively reduces the electrical circuit area and improves the performance indicators of the power supply device.

[0058] like Figure 12As shown, the chopper control circuit unit 10 is used for the switching control of the IGBT in the H-bridge chopper circuit. It includes a fourth mounting plate 101 and two chopper control circuit boards 103 connected in series. The fourth mounting plate 101 serves as the carrier for the chopper control circuit unit 10, and is mounted on the side of the liquid cooling plate 61 away from the vertical plate 20 via eight support pillars 62 disposed on the liquid cooling plate 61. Multiple support pillars are riveted to the fourth mounting plate 101. The chopper control circuit boards 103 are mounted on the side of the fourth mounting plate 101 away from the liquid cooling plate 61 via corresponding support pillars, and a second insulating sheet 102 is provided between the second insulating sheet 103 and the fourth mounting plate 101. The second insulating sheet 102 has through holes for the support pillars, located between the fourth mounting plate 101 and the chopper control circuit boards 103, thus enhancing insulation. Each chopper control circuit board 103 is provided with multiple sets of terminals that are connected to multiple drive adapter circuit boards 631 respectively; a second optical fiber connector 104 is provided at one end of the chopper control circuit board 103 near the input power distribution unit 4, the second optical fiber connector 104 extends through the input power distribution unit 4 and is used to connect to an external control display unit; two temperature relays 64 are electrically connected to the chopper control circuit board 103 respectively and are used to perform temperature detection and signal feedback for the liquid cooling power unit 6.

[0059] like Figure 13 As shown, the output stacked bus unit 11 includes an output stacked bus 111 and eight bus pins 112 arranged on top of the output stacked bus 111 with their positive and negative terminals alternately. The eight bus pins 112 are the input terminals of the output stacked bus 111, each connected to one of the multiple first IGBT modules 63. Labels V1 to V8 are sequentially affixed to the output stacked bus 111. At the corresponding physical locations of the first IGBT modules 63, the bus pins 112 with odd and even numbers of labels on the output stack are arranged in an alternate parallel configuration to reduce proximity effect and improve the current sharing effect of the DC power output. The end of the output stacked bus 111 closest to the output distribution unit 5 is its output terminal, extending out of the output distribution unit 5 and mounted on the output distribution unit 5 via an insulating clamping assembly.

[0060] In this embodiment, in response to the strong pulse electrodynamic force and magnetostrictive effect generated by the pulsed high current in the upright plate unit 2 and the output power distribution unit 4, the capacitor bus stacked unit 9 is reinforced and supported by the first bend member 21 and the insulator 22, and the connection between the output stacked bus unit 11 and the output power distribution unit 5 is clamped and fixed by the insulating clamping assembly. This provides anti-vibration reinforcement and prevents deformation of the inherent mechanical vibration characteristics generated by the pulse magnet power supply during operation.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein, and such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A modular pulsed magnet liquid-cooled power supply device, characterized in that: it comprises a frame (1), a vertical plate unit (2), a top cover (3), an input power distribution unit (4), an output power distribution unit (5), a liquid-cooled power unit (6), a self-sealing liquid-cooled plug (7), an energy storage capacitor unit (8), a capacitor busbar laminated unit (9), a chopper control circuit unit (10), and an output laminated busbar unit (11); the frame (1) is a U-shaped skeleton structure; the vertical plate unit (2) is installed in the U-shaped skeleton structure, and the upper end surface is flush with the opening end of the U-shaped skeleton structure; the top cover (3) is installed at the opening end of the U-shaped skeleton structure; the input power distribution unit (4) is installed on one side of the frame (1) and is perpendicular to the vertical plate unit (2); the output power distribution unit (5) is installed on the other side of the frame (1) opposite to the input power distribution unit (4); the liquid-cooled power unit (6) is installed in the middle of one side of the vertical plate unit (2), and a self-sealing liquid-cooled socket (651) is installed thereon; the self-sealing liquid-cooled socket (651) extends out through the output power distribution unit (5) and is connected with the self-sealing liquid-cooled plug (7), and the self-sealing liquid-cooled plug (7) is used for connecting external liquid-cooled equipment; the output laminated busbar unit (11) is installed on the vertical plate unit (2) and is located below the liquid-cooled power unit (6) and is electrically connected with the liquid-cooled power unit (6) at the input end, and extends out through the output power distribution unit (5) and is used for connecting user equipment at the output end; the capacitor busbar laminated unit (9) is installed on the vertical plate unit (2) and is located above the liquid-cooled power unit (6) and is electrically connected with the liquid-cooled power unit (6); the energy storage capacitor unit (8) is installed on the upper part of the other side of the vertical plate unit (2) and is electrically connected with the capacitor busbar laminated unit (9); and the chopper control circuit unit (10) is installed on the side of the liquid-cooled power unit (6) away from the vertical plate unit (2), and is electrically connected with the liquid-cooled power unit (6) at one end and extends out through the input power distribution unit (4) and is used for connecting external control and display units at the other end. 2.A modular pulsed magnet liquid-cooled power supply device according to claim 1, characterized in that: the vertical plate unit (2) comprises a vertical plate (20), a first mounting plate (24) and a second mounting plate (25) installed on the vertical plate (20); the liquid-cooled power unit (6) is installed in the middle of one side of the vertical plate (20), and the output laminated busbar unit (11) is installed on the lower part of one side of the vertical plate (20) through two insulators (23); an L-shaped notch is arranged on the upper part of the vertical plate (20), the capacitor busbar laminated unit (9) is connected with the upper part of one side of the vertical plate (20) through a first elbow piece (21), and the energy storage capacitor unit (8) is installed on the upper part of the other side of the vertical plate (20) and is electrically connected with the capacitor busbar laminated unit (9) through the L-shaped notch. ​ ​ ​ ​ ​ The first mounting plate (24) and the second mounting plate (25) are located at the lower part of the vertical plate (20) on the side where the energy storage capacitor unit (8) is mounted; the first mounting plate (24) is arranged close to the output distribution unit (5) and has an auxiliary power supply transformer (241) and two power circuit boards (242) mounted thereon; the second mounting plate (25) is arranged close to the input distribution unit (4) and has a drive circuit board (251) mounted thereon; One end of the auxiliary power supply transformer (241) is electrically connected to the output distribution unit (5), and the other end is respectively electrically connected to the input end of the two power circuit boards (242); the output ends of the two power circuit boards (242) are respectively electrically connected to the drive circuit board (251) and the chopper control circuit unit (10); the drive circuit board (251) is provided with a first optical fiber joint (252), the first optical fiber joint (252) extends out through the input distribution unit (4) and is used to output an optical control signal.

3. The modular pulsed magnet liquid-cooled power supply device according to claim 2, characterized in that: The liquid-cooled power unit (6) comprises a liquid-cooled plate (61), a plurality of first IGBT modules (63), a rectifier bridge (66) and a second IGBT module (68) mounted on the liquid-cooled plate (61); The liquid-cooled plate (61) is mounted at the middle part of one side of the vertical plate (20), and the plurality of first IGBT modules (63) are mounted side by side on the side of the liquid-cooled plate (61) away from the vertical plate (20); one end of each first IGBT module (63) is respectively electrically connected to the capacitor bus stack unit (9), and the other end is respectively electrically connected to the input end of the output stack bus unit (11); each first IGBT module (63) is respectively provided with a drive switching circuit board (631) electrically connected to the chopper control circuit unit (10); The rectifier bridge (66) and the second IGBT module (68) are respectively mounted on the side of the liquid-cooled plate (61) close to the vertical plate (20) and located in the L-shaped gap; one end of the rectifier bridge (66) is electrically connected to the output distribution unit (5), and the other end is electrically connected to one end of the second IGBT module (68); the other end of the second IGBT module (68) is electrically connected to the capacitor bus stack unit (9); The liquid-cooled plate (61) is provided with two internal flow channels that are in communication with each other; one end of the liquid-cooled plate (61) close to the output distribution unit (5) is provided with two switching joints (65) respectively in communication with the two internal flow channels, and each switching joint (65) is respectively provided with the self-sealing liquid-cooled socket (651).

4. The modular pulsed magnet liquid-cooled power supply device according to claim 3, characterized in that: The liquid cooling plate (61) is also provided with a first absorption capacitor (662), a second absorption capacitor (682) and two inductors (67) on one side close to the vertical plate (20); the first absorption capacitor (662) is installed on the liquid cooling plate (61) through a first insulation fixing frame (661) and is arranged in parallel with the rectifier bridge (66); the second absorption capacitor (682) is installed on the liquid cooling plate (61) through a second insulation fixing frame (681) and is arranged in parallel with the second IGBT module (68); the two inductors (67) are arranged in series between the rectifier bridge (66) and the second IGBT module (68); The liquid cooling plate (61) is also provided with two temperature relays (64) on the side away from the vertical plate (20), and the two temperature relays (64) are electrically connected with the chopper control circuit unit (10) respectively.

5. The modular pulsed magnet liquid-cooled power supply device according to claim 4, wherein: The energy storage capacitor unit (8) comprises a third mounting plate (81), an insulation plate (84) and a plurality of electrolytic capacitors (85); the third mounting plate (81) is installed on the upper part of the side of the vertical plate (20) away from the liquid cooling power unit (6); the insulation plate (84) is located on the side of the third mounting plate (81) close to the vertical plate (20), and a plurality of mounting holes corresponding to the electrolytic capacitors (85) are arranged on the insulation plate (84); the plurality of electrolytic capacitors (85) are arranged in pairs, one end of each pair of electrolytic capacitors (85) penetrates through the corresponding mounting hole and is fixed on the third mounting plate (81), and the other end penetrates through the L-shaped gap and is electrically connected with the capacitor bus stack unit (9) respectively.

6. The modular pulsed magnet liquid-cooled power supply device according to claim 5, wherein: A first insulation sheet (83) is arranged between the third mounting plate (81) and the insulation plate (84); a plurality of ventilation holes (811) are arranged on the third mounting plate (81) and the first insulation sheet (83) respectively; The two ends of the third mounting plate (81) are installed on the vertical plate (20) through second angle pieces (82) respectively; a strip-shaped hole (821) is arranged on the side of the second angle piece (82) connected with the third mounting plate (81), and the length direction of the strip-shaped hole (821) is consistent with the length direction of the electrolytic capacitor (85).

7. The modular pulsed magnet liquid-cooled power supply device according to claim 6, wherein: The capacitor bus stack unit (9) comprises a bus packaging stack (91), a plurality of ceramic voltage-sharing resistors (92) and a plurality of third absorption capacitors (93) installed on the bus packaging stack (91); The top of the bus packaging stack (91) is connected with the upper part of one side of the vertical plate (20) through a first angle piece (21), and an insulator (22) is arranged at the connection; a negative terminal (911) and a positive terminal (912) are arranged on one end of the bus packaging stack (91) close to the input power distribution unit (4) respectively, and the two terminals are electrically connected with the other end of the second IGBT module (68) respectively; The plurality of groups of ceramic voltage-sharing resistors (92) and the plurality of third absorption capacitors (93) are located on the side of the busbar packaging stack (91) away from the stand (20); the plurality of groups of ceramic voltage-sharing resistors (92) are connected to the other ends of the plurality of groups of electrolytic capacitors (85) one by one; the number of the plurality of third absorption capacitors (93) is consistent with the number of the plurality of first IGBT modules (63) and the number of groups of ceramic voltage-sharing resistors (92), and the plurality of third absorption capacitors (93) are respectively electrically connected to one end of the corresponding first IGBT module (63).

8. The modular pulsed magnet liquid-cooled power supply device of claim 7, wherein: The chopper control circuit unit (10) comprises a fourth mounting plate (101) and two chopper control circuit boards (103) connected in series; the fourth mounting plate (101) is mounted on the side of the liquid cooling plate (61) away from the stand (20) through a plurality of support columns (62); the chopper control circuit board (103) is mounted on the side of the fourth mounting plate (101) away from the liquid cooling plate (61), and a second insulating sheet (102) is arranged between the chopper control circuit board (103) and the fourth mounting plate (101); each chopper control circuit board (103) is provided with a plurality of groups of terminal blocks corresponding to the plurality of drive switching circuit boards (631); the chopper control circuit board (103) is provided with a second optical fiber joint (104) at one end close to the input distribution unit (4), the second optical fiber joint (104) extends through the input distribution unit (4) and is used for connecting an external control display unit; two temperature relays (64) are electrically connected to the chopper control circuit board (103).

9. The modular pulsed magnet liquid-cooled power supply device of claim 8, wherein: The output stack busbar unit (11) comprises an output stack busbar (111) and a plurality of busbar pins (112) arranged in parallel and staggered on the top of the output stack busbar (111); the plurality of busbar pins (112) are input ends of the output stack busbar (111) and are connected to the plurality of first IGBT modules (63) one by one; one end of the output stack busbar (111) close to the output distribution unit (5) is an output end, which extends out of the output distribution unit (5) and is installed on the output distribution unit (5) through an insulating clamping assembly.

10. The modular pulsed magnet liquid-cooled power supply device of claim 9, wherein: The input distribution unit (4) comprises an input panel (41) and a fault indicator lamp (42) mounted on the input panel (41); the input panel (41) is mounted on one side of the frame (1), and the input panel (41) is provided with two optical fiber joint through-hole windows (411) and a plurality of first heat dissipation holes (412); the two optical fiber joint through-hole windows (411) are used for the first optical fiber joint (252) and the second optical fiber joint (104) to pass through, respectively; the fault indicator lamp (42) is electrically connected to the drive circuit board (251); The output distribution unit (5) comprises an output panel (51), main electric plugs (52) and insulation fixed boxes (53) installed on the output panel (51), and control electric plugs (54) installed in the insulation fixed boxes (53); the output panel (51) is installed on the other side of the frame (1) opposite to the input panel (41), and the output panel (51) is provided with two liquid cooling socket via windows (511) and a plurality of second heat dissipation holes (512); the two liquid cooling socket via windows (511) are respectively used for the passing out of two self-sealing liquid cooling sockets (651); one end of the main electric plug (52) is used for connecting an external power supply device, and the other end is electrically connected with one end of a rectifier bridge (66); one end of the control electric plug (54) is used for connecting an external power supply device, and the other end is electrically connected with one end of an auxiliary power supply transformer (241); The insulation clamping assembly comprises a first clamping piece (56) and a second clamping piece (57) in an L-shaped structure; one side of the first clamping piece (56) and the second clamping piece (57) is respectively installed on the output panel (51), and the other side is respectively attached to the two side surfaces of the output laminated busbar (111) output end and is connected through bolts; a limiting nut (58) is sleeved on the bolt, and the limiting nut (58) is located between the first clamping piece (56) and the second clamping piece (57).

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