Mining high-power-density DCDC converter

Abstract

The utility model discloses a mining high-power-density DCDC converter, and belongs to the technical field of mining power electronic equipment. A sealing strip is arranged between a box body and a box body cover plate of the mining high-power-density DCDC converter, a detachable hoisting point and a waterproof pressure release valve are installed on the side face of the box body, a connector, a water inlet, a water outlet and a grounding pile which are located on the front face of the box body serve as external connection points of the converter, and a water cooling reactor and heat dissipation fins are installed on a water cooling plate. A fan is arranged at the small heat dissipation position to form turbulent flow, the laminated busbar and the copper bar are used for being connected with a main circuit, the circuit board is fixed to the box body through a mounting beam on the mounting plate, and a wire binding seat is arranged on the mounting plate and used for fixing a wire harness. The utility model has the advantages of reasonable layout design, compact structure, light weight, high power density, safety, reliability, low cost, simplicity and convenience in manufacture and installation and high protection level, and can meet the use requirements of various mine trucks.

Description

Technical Field

[0001] The utility model belongs to the technical field of mining power electronic equipment, in particular to a mining high power density DCDC converter. Background Art

[0002] DC / DC converters are widely used in the new energy vehicle industry. With the in-depth promotion of energy conservation and emission reduction, the electrification transformation of mining vehicles and the research and development of pure electric mining vehicles are also increasing. Different from the DC / DC converters of new energy vehicles, the DC / DC converters for mining require multiple functions, high power and high voltage, which leads to complex and large devices in the DC / DC converters. The existing DC / DC converters for mining are relatively complex in structure and are generally designed as cabinets, which occupy a large space in the vehicle and are not small in weight. They also require a separate cooling system, which is inconvenient to install on the vehicle, has high manufacturing costs, and has low power density, resulting in great waste. Utility Model Content

[0003] The purpose of the utility model is to solve the problems raised in the above-mentioned background technology and provide a high power density DCDC converter for mining; the converter has a reasonable layout design, compact structure, light weight, high power density, safety and reliability, low cost, simple and convenient manufacturing and installation, high protection level, and can meet the use requirements of various mining vehicles.

[0004] To achieve the above purpose, the utility model provides the following technical solution: including a box body; the box body is a rectangular parallelepiped structure, and the top and bottom surfaces of the box body are provided with box cover plates; the side of the box body is provided with a lifting point, a waterproof pressure relief valve and a connector.

[0005] Furthermore, a plurality of mounting beams are arranged on the inner side wall of the box body, the mounting beams are connected with mounting plates, and the interior of the box body is divided into an upper and lower structure by the mounting plates.

[0006] Furthermore, the box body, the box body cover and the mounting plate are all provided with grounding piles.

[0007] Furthermore, a water cooling plate is arranged on the upper surface of the box cover at the bottom of the box; a cooling liquid flow channel is arranged inside the water cooling plate, and a water inlet and outlet are arranged on the side of the box, and both ends of the cooling liquid flow channel are connected to the water inlet and outlet.

[0008] Furthermore, a heat dissipation fin is arranged on the upper surface of the low temperature position of the water cooling plate, and a fan is arranged above the heat dissipation fin.

[0009] Furthermore, the main circuit is arranged at the lower layer of the box through a mounting frame, and the main circuit includes a stacked busbar and a copper busbar; an insulating frame is fixedly arranged on the side wall of the box, and the copper busbar terminal is arranged on the insulating frame.

[0010] Furthermore, the circuit board is mounted on the upper surface of the mounting plate, and a plurality of wire binding seats are provided on the mounting plate.

[0011] Furthermore, sealing grooves are provided on the contact surfaces between the top and bottom surfaces of the box body and the cover plate of the box body, and sealing strips are installed in the sealing grooves.

[0012] Furthermore, the mounting plate divides part of the space inside the box into an upper and lower layer structure, while the other space still maintains a single-layer structure; the water-cooled reactor is arranged on the upper surface of the water-cooled plate, and the water-cooled reactor is in the single-layer structure space.

[0013] Furthermore, a plurality of screw holes are provided at the bottom of the box body for installation and fixation of the entire DCDC converter, which can be installed flat or hung.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: 1) The layout idea of ​​the components in the DCDC converter is high and low voltage partitioning and strong and weak electricity stratification, which effectively ensures the realization of the converter function and reduces electrical problems such as electromagnetic interference; under the premise of ensuring electrical requirements, the three-dimensional space inside the box is maximized to make the converter structure more compact; the DCDC converter adopts design methods such as enhanced insulation, which greatly improves the power density of the equipment and saves space size and manufacturing cost; 2) The modular design scheme divides the converter into several components according to the functions and other characteristics, and the components can be assembled separately before being assembled, which is conducive to the overall planning of the production process and saves working hours to a certain extent; by designing appropriate part thickness and bending angle and other measures, the processing method of the structural parts is more flexible, sheet metal processing, machining, mold die casting can be realized, and small batch and large batch production can be freely selected; 3) In view of the different heat dissipation requirements of various devices in the equipment, a thermal design idea combining water cooling and air cooling is adopted to effectively ensure the safety of the equipment; the DCDC converter is designed with an IP65 protection level, which can be applied To meet more environmental requirements; the main material of the box is 5 series aluminum alloy, which has good corrosion resistance, low density, high tensile strength, and good processing and welding performance. It is not only light in weight, but also can adapt to a variety of processing methods; a silicone rubber sealing strip is set between the box and the box cover, with good high and low temperature performance, weather resistance, corrosion resistance and insulation performance, so that the converter can ensure the protection effect inside the equipment in most environments; a waterproof pressure relief valve is set on the side of the box, which can balance the pressure inside and outside the box while ensuring the sealing, greatly reducing fog and condensation; 4 ) The box is equipped with a detachable lifting point. After the equipment is in place, you can choose whether to remove it according to your needs; grounding piles are reserved on the box and the internal mounting plate to further ensure the grounding safety of the equipment; wire holes, modular holes and wire holders are set on the mounting plate, which makes the wiring harness path more flexible, the wiring harness is more convenient to fix, and the wiring is neat and beautiful; copper busbar terminals are set at the input and output positions, and insulation support is provided to ensure the reliability of cable compression; the external connection points of the inverter are designed on one side, including the input and output lines and the inlet and outlet water, so that the equipment can be better laid out on the mine car, and it can also save space for connecting equipment on the car.

[0015] In order to more clearly illustrate the functional characteristics and structural parameters of the utility model, further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a high power density DCDC converter for mining;

[0018] Figure 2 This is a schematic diagram of the lower internal structure of a high power density DCDC converter for mining;

[0019] Figure 3 This is a schematic diagram of the upper internal structure of a high power density DCDC converter for mining;

[0020] The reference numerals in the figure are: 1. box body; 2. box body cover; 3. lifting point; 4. waterproof pressure relief valve; 5. connector; 6. grounding pile; 7. water inlet and outlet; 8. cooling fins; 9. fan; 10. stacked busbar; 11. copper busbar; 12. mounting beam; 13. copper busbar terminal; 14. circuit board; 15. mounting plate; 16. wire holder; 17. sealing strip; 18. water-cooled plate; 19. water-cooled reactor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] A high-power density DCDC converter for mining, including a box and an independent installation position and a hoisting point arranged on the box; the external connection points of the box are designed on one side, including inlet and outlet line connectors and water inlets and outlets; a silicone rubber sealing strip is arranged on the contact surface between the box cover and the box, and is tightened with a suitable bolt assembly to ensure the sealing of the box; a waterproof pressure relief valve is installed on the side of the box to balance the pressure inside and outside the box on the basis of ensuring the protection level of the box; the internal electrical components of the converter are based on the schematic diagram, combined with the device size and weight, and adopt the principles of modularization and high integration to combine the three-dimensional layout of the internal space of the box with the combination of plane arrangement and layered installation, so as to make full use of the internal space of the box; the heat generated by power components and reactors Large devices are connected to the water-cooled plate, which can not only fix them but also dissipate heat well; cooling fins are designed at the low-temperature position of the water-cooled plate, and the low temperature derived from the cooling fins is directed by the fan to form a turbulence inside the box, thereby reducing the ambient temperature inside the box; the main circuits all use stacked busbars and copper bars, which not only ensure the electrical parameters, but also facilitate installation, save space, and are neat and beautiful; the circuit boards in the converter are installed in layers, fixed through the mounting plate and the mounting beams reserved on the box, and wire holes and wire tying seats are set on the mounting plate to facilitate the arrangement of the wiring harness according to the set path; grounding piles are reserved for the box, box cover and mounting plate, which is safe and convenient; copper busbar terminals are set at the inlet and outlet positions, and insulated supports are provided to ensure the reliability of cable press-fitting.

[0023] Combination Figure 1-3 The present invention discloses a high power density DCDC converter for mining, comprising a box body 1 and a detachable lifting point 3 arranged on the box body 1. The external connection points of the box body 1 are all designed on one side, including the connector 5 for the input and output lines and the water inlet and outlet 7, which can be better arranged on the mine car and can also save space on the car. A sealing strip 17 is arranged between the contact surface of the box cover 2 and the box body 1, and is tightened with a suitable bolt assembly to ensure the sealing of the box body. The sealing strip 17 is integrally formed of silicone rubber material and is installed in the sealing groove reserved in the box body 1. On the premise of ensuring the sealing performance, it also has excellent high and low temperature performance, weather resistance, corrosion resistance and insulation performance.

[0024] A waterproof pressure relief valve 4 is installed on the side of the box 1. On the basis of ensuring the protection level of the box, the pressure inside and outside the box is balanced, greatly reducing fog and condensation. The internal electrical components of the converter are based on the schematic diagram, combined with the device size and weight, and adopt the principles of modularization and high integration. The internal space of the box is three-dimensionally arranged, and the plane arrangement and layered installation are combined to make full use of the internal space of the box. Power components and customized water-cooled reactors 19 and other devices with high heat generation are connected to the water-cooled plate 18, which can be fixed and dissipate heat well. The cooling fins 8 are designed at the low-temperature position of the water-cooled plate 18. The low temperature derived from the cooling fins 8 is formed into a turbulent flow inside the box through the fan 9 to reduce the ambient temperature inside the box. The thermal design concept of combining water cooling and air cooling effectively ensures the safety of the equipment. The main circuits of the DCDC converter are connected by stacked busbars 10 and copper bars 11, which not only ensure the electrical parameters, but also facilitate installation, save space, and are neat and beautiful.

[0025] The circuit board 14 in the DCDC converter is installed in layers and fixed to the mounting beam 12 reserved on the box through the mounting plate 15. The mounting beam 12 is fixed to the rivet studs reserved on the box 1. Just tighten the nut. The mounting plate 15 is provided with wire holes, modular holes and wire holders 16 to facilitate the design and fixing of the wiring harness. The box 1, the box cover 2 and the mounting plate 15 are all equipped with grounding piles 6 to further ensure the safety of the equipment grounding.

[0026] Copper busbar terminals 13 are set at the inlet and outlet positions, and insulation support is provided to ensure the reliability of cable press-fitting. The main structural parts such as the box 1 and the box cover 2 are more flexible in processing methods by designing appropriate part thickness and bending angle. Sheet metal processing, machining, and mold die-casting can all be achieved, and small batch and large batch production can be freely selected. The water-cooled plate 18, water-cooled reactor 19, and mounting plate 15 are all modularly designed. After installing them with related devices, the components are installed in the box 1, which is conducive to overall planning and improves the overall installation efficiency and equipment quality. According to the needs of electrical isolation, the device layout adopts high and low voltage partitioning and strong and weak electricity layering design, which effectively ensures the realization of the converter function and reduces electrical problems such as electromagnetic interference. The main material of the DCDC converter box is 5 series aluminum alloy, which has good corrosion resistance, low density, high tensile strength, and good processing and forming performance and welding performance. It is not only light in weight, but also can adapt to a variety of processing methods. Four oblong holes are reserved at the bottom of the box 1 for installation and fixation of the entire DCDC converter, which can be installed on a flat surface or hung.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high power density DCDC converter for mining, characterized in that: The box body (1) comprises a box body (1); the box body (1) is a rectangular parallelepiped structure, and the top and bottom surfaces of the box body (1) are provided with box body covers (2); the side surfaces of the box body (1) are provided with hanging points (3), a waterproof pressure relief valve (4) and a connector (5).

2. A high power density DCDC converter for mining according to claim 1, characterized in that: The inner wall of the box body (1) is provided with a plurality of mounting beams (12), the mounting beams (12) are connected to mounting plates (15), and the interior of the box body (1) is divided into an upper and lower layer structure by the mounting plates (15).

3. A high power density DCDC converter for mining according to claim 1, characterized in that: The box body (1), the box body cover plate (2) and the mounting plate (15) are all provided with grounding piles (6).

4. A high power density DCDC converter for mining according to claim 1 or 2, characterized in that: A water cooling plate (18) is arranged on the upper surface of the box cover (2) on the bottom surface of the box (1); a cooling liquid flow channel is arranged inside the water cooling plate (18); a water inlet and outlet (7) are arranged on the side surface of the box (1); and both ends of the cooling liquid flow channel are connected to the water inlet and outlet (7).

5. A high power density DCDC converter for mining according to claim 4, characterized in that: The upper surface of the water cooling plate (18) at the low temperature position is provided with heat dissipation fins (8), and a fan (9) is provided above the heat dissipation fins (8).

6. A high power density DCDC converter for mining according to claim 2, characterized in that: The main circuit is arranged on the lower layer of the box body (1) through a mounting frame, and the main circuit comprises a stacked busbar (10) and a copper busbar (11); an insulating frame is fixedly arranged on the side wall of the box body (1), and a copper busbar terminal (13) is arranged on the insulating frame.

7. A high power density DCDC converter for mining according to claim 2, characterized in that: The circuit board (14) is mounted on the upper surface of the mounting plate (15), and a plurality of wire binding seats (16) are formed on the mounting plate (15).

8. A high power density DCDC converter for mining according to claim 1, characterized in that: The contact surfaces between the top and bottom surfaces of the box body (1) and the box body cover plate (2) are provided with sealing grooves, and sealing strips (17) are installed in the sealing grooves.

9. A high power density DCDC converter for mining according to claim 4, characterized in that: The mounting plate (15) divides part of the space inside the box (1) into an upper and lower two-layer structure, while the other space still maintains a single-layer structure; the water-cooled reactor (19) is arranged on the upper surface of the water-cooled plate (18), and the water-cooled reactor (19) is in the single-layer structure space.

10. A high power density DCDC converter for mining according to claim 1, characterized in that: The bottom of the box body (1) is provided with a plurality of screw holes.

Images