Bidirectional high-voltage direct current source

Abstract

The utility model discloses a bidirectional high-voltage direct-current source which comprises a box body, a plurality of supporting partition plates which are arranged in parallel at intervals are arranged in the box body, a power module and a fan used for dissipating heat of the power module are arranged between every two adjacent supporting partition plates, and each supporting power module comprises a power module control panel and a power module heat dissipation assembly. A power module supporting piece used for supporting the power module is further arranged between every two adjacent supporting partition plates, and the height of each power module supporting piece corresponds to the height of the power module heat dissipation assembly. According to the utility model, good support can be effectively provided for the power module control panel, and device damage caused by PCB deformation due to the weight problem of the power module can be avoided.

Description

Background Art

[0002] The bidirectional high-voltage DC power supply is a combination of a high-voltage DC power supply and a regenerative electronic load. It is an indispensable test equipment for power supply laboratories and scientific research institutions, especially the new energy industry. In the context of the new energy revolution, batteries have gradually become one of the main energy supply methods and are widely used in electric vehicles, energy storage and other fields. Since the battery itself has the characteristics of DC charge and discharge, and the voltage level of the related power battery is relatively high, the battery test itself and the battery-related component test are developing towards bipolarity. The use of bipolar bidirectional high-voltage DC power supply can effectively save space and cost, and become a future development trend. In related application scenarios such as BMS R&D simulation testing, on-board charging and discharging motor testing, motor testing and semiconductor testing, high-voltage bidirectional power supplies have targeted application needs.

[0003] However, the existing bidirectional high-voltage power supplies have some obvious defects in structural design. They usually include a housing with multiple support partitions arranged in parallel and spaced intervals inside, and a power module and a heat dissipation component are arranged between two adjacent support partitions. The supporting power module includes a power module control board and a power module heat dissipation component. This design has the following main problems: the structural risk is relatively large. The power module control board is heavy, but it is only supported by the power module heat dissipation component, which can easily cause the PCB board to deform or the device to be damaged. Therefore, it is urgent to design a new bidirectional high-voltage DC power supply to solve the above-mentioned structural and performance defects in the prior art and meet the growing demand for such equipment in the future new energy and other fields. Utility Model Content

[0004] Aiming at the defects in the structural design of the existing bidirectional high-voltage DC power supply, especially the problem that the power module control board is easily deformed due to its own heavy weight, which in turn causes damage to the device, the utility model proposes a bidirectional high-voltage DC power supply. The utility model optimizes the supporting structure of the power module, can provide more reliable support for the heavy power module control board, effectively avoids the deformation of the PCB board, thereby preventing the risk of device damage caused by it, and improving the stability of the overall structure and the reliability of use.

[0005] The utility model discloses a bidirectional high-voltage direct current source, comprising a box body, wherein a plurality of support partitions arranged in parallel and at intervals are arranged in the box body, a power module and a fan for dissipating heat to the power module are arranged between two adjacent support partitions, the supporting power module comprises a power module control board and a power module heat dissipation component, a power module support member for supporting the power module is also arranged between two adjacent support partitions, and the height of the power module support member corresponds to the height of the power module heat dissipation component.

[0006] In a preferred embodiment of the present invention, a signal adapter board is detachably connected to the support partition, and a power supply connector for supplying power to the heat dissipation component is provided on the signal adapter board.

[0007] In a preferred embodiment of the present invention, the box body includes a plurality of PFC board supports arranged in parallel and at intervals, and the PFC board supports are connected to the PFC modules.

[0008] In a preferred embodiment of the present utility model, the PFC module includes a PFC module power board, a PFC module heat sink is provided on the lower end surface of the PFC module power board, a PFC module control board is provided on the upper end surface of the PFC module power board, and a height of the PFC board support corresponds to a height of the PFC module heat sink.

[0009] In a preferred embodiment of the present invention, a communication board adapter plate is slidably connected to the side wall of the box body, and a avoidance hole corresponding to the position of the communication board adapter plate is provided on the box body.

[0010] In a preferred embodiment of the utility model, a communication board guide rail support and a control board fixing member arranged at intervals in the up and down directions are provided on the side wall of the box body, and a communication board guide rail is provided at the upper end of the communication board guide rail support and the lower end of the control board fixing member.

[0011] In a preferred embodiment of the present invention, a main control panel is fixedly connected to the control panel fixing member.

[0012] In a preferred embodiment of the present utility model, a plurality of output plate mounting studs are arranged in the box body, and the output plate is arranged on the output plate mounting studs.

[0013] In a preferred embodiment of the present utility model, an input lightning protection board is arranged in the box body.

[0014] In a preferred embodiment of the present invention, the box body comprises a front panel assembly, a box body assembly, a rear panel assembly and a cover plate which are overlapped with each other.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model improves the support stability of the power module control board. The utility model provides direct and reliable support for the heavy power module control board by specially arranging a power module support between adjacent support partitions, thereby avoiding the problem of deformation of the control board due to its own weight, and fundamentally solving this major defect in the prior art.

[0017] 2. The utility model reduces the risk of damage to power module components. The utility model effectively prevents the control board from being deformed by improving the supporting structure, thereby reducing the risk of component damage and improving the reliability and service life of the equipment.

[0018] 3. The utility model optimizes the internal space layout of the power supply. Through a new support method, the layout of the power module, the control board and the heat dissipation component is more compact and reasonable, which improves the utilization efficiency of the internal space and is conducive to the intensive design of the product.

[0019] 4. The utility model is convenient for modular maintenance. The layout of each functional module (power module, PFC module, control board, etc.) of the utility model is relatively independent. The detachable interface and guide rail design facilitate the inspection and replacement of a single module, thereby improving the maintainability of the entire machine.

[0020] 5. The utility model improves the overall heat dissipation performance. The height of the power module heat dissipation component and the PFC heat sink of the utility model matches the height of the support member, which is conducive to smooth heat transfer. In addition, the fan assists in heat dissipation, so the overall heat dissipation performance is enhanced.

[0021] 6. The structural design is reasonable and the degree of modularization is high. The whole machine of the utility model is composed of multiple modular components. The interfaces between the components are clear and the structural design is reasonable, which is conducive to standardized production and reduces manufacturing and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the overall appearance diagram of a bidirectional high-voltage direct current source of the utility model;

[0023] Figure 2 It is an exploded diagram of a bidirectional high voltage direct current source of the utility model;

[0024] Figure 3 This is a schematic diagram of a front panel assembly of a bidirectional high-voltage direct current source of the utility model;

[0025] Figure 4 This is a schematic diagram of a bidirectional high-voltage direct current source box assembly of the utility model;

[0026] Figure 5 This is a schematic diagram of a bidirectional high voltage DC source PFC module of the utility model.

[0027] Figure 6 This is a schematic diagram of a bidirectional high-voltage DC source input lightning protection board of the utility model;

[0028] Figure 7 This is a schematic diagram of a rear panel assembly of a bidirectional high-voltage direct current source of the utility model;

[0029] Figure 8This is a schematic diagram of a bidirectional high-voltage DC source communication board assembly of the utility model;

[0030] In the figure: 1-front panel assembly; 1.1-front panel frame; 1.2-front panel ventilation plate; 1.3-USB keypad; 1.4-touch screen; 1.5-switch button; 1.6-knob; 1.7-light guide column; 1.8-handle; 2-box assembly; 2.1-box; 2.2-fan assembly; 2.2.1-fan installation; 2.2.2-fan; 2.3-PFC board support; 2.4-support partition; 2.5-power module support; 2.6-control board fixing; 2.7-communication board guide; 2.7.1-communication board guide groove; 2.8-communication board guide support; 2.9-output board mounting studs; 2.10-PFC module mounting studs; 3-PFC module; 3.1-PFC module radiator; 3.1.1-PFC module radiator plane; 3.2-PFC module power board; 3.3-PFC module 1.1-PFC module control board; 2.2-PFC module guide pin; 3.3-PFC module guide pin; 4.4-PFC module guide pin; 5.5-PFC module guide pin; 6.6-PFC module guide pin; 7.7-PFC module guide pin; 8.8-PFC module guide pin; 9.1-PFC module guide pin; 10.2-PFC module guide pin; 11.2-PFC module guide pin; 12.3-PFC module guide pin; 13.4-PFC module guide pin; 14.5-PFC module guide pin; 15.6-PFC module guide pin; 16.7-PFC module guide pin; 17.8-PFC module guide pin; 18.9-PFC module guide pin; 19.1-PFC module guide pin; 20.1-PFC module guide pin; 21.2-PFC module guide pin; 22.3-PFC module guide pin; 23.4-PFC module guide pin; 24.5-PFC module guide pin; 25.6-PFC module guide pin; 26.7-PFC module guide pin; 27.8-PFC module guide pin; 28.9-PFC module guide pin; 29.1-PFC module guide pin; 30.1-PFC module guide pin; 31.1-PFC module guide pin; 32.1-PFC module guide pin; 33.1-PFC module guide pin; 34.1-PFC module guide pin; 35.1-PFC module guide pin; 36.1-PFC module guide pin; 37.1-PFC module guide pin; 38.1-PFC module guide pin; 39.2-PFC module guide pin; 40.2-PFC module guide pin; 41.1-PFC module guide pin; 42.1-PFC module guide pin; 43.1-PFC module guide pin; 44. Communication board adapter board connector; 10-rear panel assembly; 10.1-rear panel; 10.2-output copper busbar positive; 10.3-output copper busbar negative; 10.4-magnetic ring; 10.5-output insulation board; 10.6-input lightning protection board slot; 10.7-communication board slot; 10.8-main control board installation avoidance slot; 11-communication board assembly; 11.1-communication board cover; 11.2-communication board cover mounting bracket; 12-cover plate. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the technical solution (including the preferred technical solution) of the present utility model by means of the accompanying drawings and by listing some optional embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0032] As attached Figure 1-8 The utility model discloses a bidirectional high-voltage direct current source, comprising a housing (box body). A plurality of support baffles 2.4 are arranged in parallel and spaced apart inside the housing, and a power module 5 and a fan for cooling the power module 5 are installed between two adjacent support baffles 2.4. Each power module 5 is composed of a power module control board 5.2 and a power module cooling assembly.

[0033] In order to solve the problem in the prior art that the power module control board is easily deformed due to its own weight, the utility model is specially provided with a power module support 2.5 between two adjacent support partitions 2.4, which is used to reliably support the power module 5. The height of the power module support 2.5 corresponds to the height of the power module heat dissipation assembly, and can provide firm support for the heavy power module control board 5.2.

[0034] In addition, a signal adapter board 4 is detachably connected to the support baffle 2.4, and a power supply connector for supplying power to the heat dissipation component is provided on the signal adapter board 4.

[0035] A plurality of PFC board support members 2.3 are arranged in parallel and spaced apart in the housing, and each PFC board support member 2.3 is connected to a PFC module 3. The PFC module 3 includes a PFC module power board 3.2, a PFC module radiator 3.1 arranged at the lower end of the power board, and a PFC module control board 3.3 arranged at the upper end of the power board. The height of the PFC board support member 2.3 corresponds to the height of the PFC module radiator 3.1.

[0036] The side wall of the housing is slidably connected with a communication board adapter plate 9, and a clearance hole is provided on the housing at a position corresponding to the communication board adapter plate 9. The side wall is also spaced apart in the vertical direction with a communication board guide support 2.8 and a control board fixing member 2.6, and both the top and bottom ends of the communication board guides 2.7 are provided. The main control board 7 is fixedly connected to the control board fixing member 2.6.

[0037] A plurality of output plate mounting studs 2.9 are also provided in the shell, and the output plate 6 is installed on these studs. In addition, an input lightning protection plate 8 is also provided in the shell.

[0038] The entire housing is formed by overlapping a front panel assembly 1 , a box body assembly 2 , a rear panel assembly 10 and a cover plate 12 .

[0039] Specifically, the dimensions of the high-voltage DC power supply of the utility model refer to the design of the 3U standard chassis, and the external dimensions are 440mm wide*132mm high*660mm deep (excluding the handle, output copper bar and output connector leakage height). The maximum output voltage of the high-voltage DC power supply is 1500V, and the maximum power is 30KW. The main structure consists of a front panel assembly, a box assembly 2, a PFC module 3, a signal adapter board 4, a power module 5, an output board 6, a main control board 7, an input lightning protection board 8, a communication board adapter board 9, a rear panel assembly 10, a communication board assembly 11, and a cover plate 12 assembly.

[0040] The front panel assembly mainly consists of a front panel frame 1.1, a front panel ventilation plate 1.2, a USB keypad 1.3, a touch screen 1.4, a switch button 1.5, a knob 1.6, a light guide 1.7, and two handles 1.8. The USB keypad 1.3 and the touch screen 1.4 are directly locked to the front panel frame 1.1 and the front panel ventilation plate 1.2. The front panel frame 1.1 extends on both sides, and the handles 1.8 are fixed on both sides of the front panel frame 1.1, eliminating the conventional design of the ears. The front panel ventilation plate 1.2 is designed in the shape of a louver, which can block the naked eye from observing the inside of the machine while ensuring sufficient ventilation area. The front panel frame 1.1 is the main force-bearing component, made of aluminum alloy, and has good installation strength. The front panel ventilation plate is a non-force-bearing component, made of plastic, which can reduce weight while designing complex shapes.

[0041] The main components of the box body 2.1 are mainly composed of a box body 2.1, a fan assembly 2.2, 3 PFC board supports 2.3, 4 support partitions 2.4, 6 power module supports 2.5, 2 control board fixings 2.6, 2 communication board rails 2.7, 1 communication board rail 2.7, several PFC board support studs and output board support studs. The fan assembly 2.2 mainly includes a fan mounting frame 2.2.1 and 3 fans 2.2.2. The entire module is locked to the bottom, both sides and cover 12 of the box body 2.1. The PFC board support 2.3, support partition 2.4 and power module support 2.5 in the assembly are all locked to the bottom of the box body 2.1. In addition to the support function, they can also serve as air ducts to ensure that the three power modules 5 have independent air ducts. The control board fixing 2.6 and the communication board rail support 2.8 are directly riveted to the box body 2.1, and no screw assembly is required. The communication board rail 2.7 is fixed to the control board fixing member 2.6 and the communication board rail supporting member 2.8 respectively by means of rail clamping feet.

[0042] The PFC module 3 is located at the front of the chassis, at the air inlet of the fan. There are about 10mm flat surfaces at both ends of the PFC module heat sink 3.1. During assembly, the flat surfaces on both sides of the heat sink of the PFC module 3 are placed on the PFC board support 2.3 and screwed together. The heat sink and the PFC board support 2.3 are used to bear the weight of the PFC module 3 to prevent the PCB board from deforming and causing damage to the device. After the PFC module power board 3.2 is installed, the PFC module control board 3.3 is plugged into the PFC module 3 and screwed together. When plugging in, the guide pins at the diagonal ends can be used to assist in avoiding misalignment.

[0043] The signal transfer board 4 is located in the middle of the chassis, at the air outlet end of the fan, and is directly screwed to the support partition 2.4. The signal transfer board 4 is designed with a fan power supply connector 4.1, which is used to supply power to the fan.

[0044] The power module 5 is located in the middle of the chassis, at the air outlet of the fan. During assembly, the heat sink of the power module 5 is placed on both sides of the power module support 2.5 and screwed together. The heat sink and the module support are used to bear the weight of the power module 5 to prevent the PCB board from deforming and causing damage to the device. The assembly method is similar to that of the PFC module 3. After the power module 5 is installed, the power module control board 5.3 is screwed together with the support partition 2.4.

[0045] The output board 6 is located at the rear of the chassis and is directly locked to the studs of the box body 2.1 component 2.

[0046] The main control board 7 is locked to the control board fixing member 2.6 of the box body assembly 2 and the fixing member of the rear panel assembly 10. The rear panel 10.1 is arranged to avoid the main control board 7, so that the main control board 7 can be maintained without disassembling the rear panel 10.1 assembly 10.

[0047] The input lightning protection board 8 is located at the rear of the chassis. Four copper studs are welded on the four corners of the input lightning protection board 8. When assembling, it is directly installed on the outside of the chassis using countersunk screws and four copper studs. Installing from the outside of the chassis is convenient for later maintenance. After assembly, the input connector of the input lightning protection board 8 protrudes about 3mm from the rear panel 10.1, which is convenient for plugging and unplugging the input line.

[0048] The communication board adapter board 9 is located at the rear of the chassis. Two copper studs are welded on the board. When assembling, it is directly installed on the outside of the chassis using countersunk screws and two copper studs. The installation method is similar to that of the input lightning protection board 8.

[0049] The rear panel assembly 10 includes a rear panel 10.1, a positive output copper bar 10.2, a negative output copper bar 10.3, a magnetic ring 10.4, and two output insulating plates 10.5. The positive output copper bar 10.2 and the negative output copper bar 10.3 pass through the magnetic ring 10.4 and the output insulating plate 10.5 respectively. The magnetic ring 10.4 can be directly fixed to the rear panel 10.1, or it can be fixed with a cable tie by using the positive output copper bar 10.2 and the negative output copper bar 10.3 passed through. The output insulating plate 10.5 is fixed to the rear panel 10.1 from the inner side of the rear panel 10.1.

[0050] The communication board assembly 11 includes a communication board and a communication board cover 11.1. The communication board cover 11.1 is directly fixed to the bracket on the communication board by screws. When installing, the communication board assembly 11 is directly inserted into the connector of the communication board adapter board 9 along the communication board guide rail 2.7 slot from the outside of the rear panel 10.1 assembly 10, and fixed to the rear panel 10.1 assembly 10 by countersunk screws. In this way, the communication board can be maintained without disassembling any other components.

[0051] The main structure of the chassis of the high-voltage DC power supply, such as the front panel assembly 1, the box body assembly 2, the rear panel assembly 10, and the cover 12 are all overlapped with each other and fastened with countersunk screws.

[0052] The PFC module 3, the signal adapter board 4, the power module 5, the output board 6, the main control board 7, the input lightning protection board 8, the communication board adapter board 9, and the PCB boards are connected to each other by wires.

[0053] It is easy for technicians in the relevant technical field to understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, replacements, improvements, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A bidirectional high-voltage direct current source, comprising a box body, wherein a plurality of support baffles (2.4) arranged in parallel and spaced apart are arranged in the box body, a power module (5) and a fan for cooling the power module (5) are arranged between two adjacent support baffles (2.4), the support power module (5) comprising a power module control board (5.2) and a power module cooling assembly, characterized in that: A power module support member (2.5) for supporting the power module (5) is also provided between two adjacent support partitions (2.4); the height of the power module support member (2.5) corresponds to the height of the power module heat dissipation assembly.

2. The bidirectional high voltage direct current source according to claim 1, characterized in that: A signal adapter board (4) is detachably connected to the supporting baffle (2.4), and a power supply connector for supplying power to the heat dissipation component is provided on the signal adapter board (4).

3. The bidirectional high voltage direct current source according to claim 1, characterized in that: The box body includes a plurality of PFC board support members (2.3) arranged in parallel and at intervals, and the PFC board support members (2.3) are connected to a PFC module (3).

4. The bidirectional high voltage direct current source according to claim 3, characterized in that: The PFC module (3) comprises a PFC module power board (3.2), a PFC module heat sink (3.1) is arranged on the lower end surface of the PFC module power board (3.2), a PFC module control board (3.3) is arranged on the upper end surface of the PFC module power board (3.2), and the height of the PFC board support (2.3) corresponds to the height of the PFC module heat sink (3.1).

5. The bidirectional high voltage direct current source according to claim 1, characterized in that: A communication board adapter plate (9) is slidably connected to the side wall of the box body, and a avoidance hole corresponding to the position of the communication board adapter plate (9) is provided on the box body.

6. The bidirectional high voltage direct current source according to claim 5, characterized in that: A communication board guide rail support (2.8) and a control board fixing member (2.6) are arranged at intervals in the up-down direction on the side wall of the box body, and a communication board guide rail (2.7) is provided at the upper end of the communication board guide rail support (2.8) and the lower end of the control board fixing member (2.6).

7. The bidirectional high voltage direct current source according to claim 6, characterized in that: The control panel fixing member (2.6) is fixedly connected with a main control panel (7).

8. The bidirectional high voltage direct current source according to claim 1, characterized in that: A plurality of output plate mounting studs (2.9) are arranged in the box body, and an output plate (6) is arranged on the output plate mounting studs (2.9).

9. The bidirectional high voltage direct current source according to claim 1, characterized in that: An input lightning protection plate (8) is arranged in the box body.

10. The bidirectional high voltage direct current source according to claim 1, characterized in that: The box body comprises a front panel assembly (1), a box body assembly (2), a rear panel assembly (10) and a cover plate (12) which are overlapped with each other.

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