Reusable DCDC and DCAC converter

Abstract

The utility model relates to a reusable DCDC and DCAC converter, which effectively solves the problems of inflexible interface, single function, complicated operation and the like. Comprising a case shell, a main board is arranged in the case shell, a moving plate sliding left and right is arranged on the rear side of the main board, a filtering plate is fixedly connected to the moving plate, a multi-stage sliding rail is arranged between the moving plate and the case shell, a through hole matched with the moving plate is formed in the outer wall of the case shell, and a through hole matched with the through hole is formed in the outer wall of the case shell. The end, close to the through hole, of the movable plate is fixedly connected with a side plate, and air holes are formed in the front side and the rear side of the case shell correspondingly. According to the utility model, through the arrangement of the moving plate, the multi-stage slide rail, the side plate, the through hole and the like, the filter plate is replaced by adopting a side pulling mode, and various electric power conversion modes including DC / DC and DC / AC conversion can be supported, so that the equipment can adapt to various different application requirements, and photovoltaic power generation is converted into an energy storage battery system, so that the power conversion efficiency is improved. And then wind power generation and various direct current and alternating current loads are performed.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage photovoltaic, in particular to a reusable DCDC and DCAC converter. Background Technique

[0002] With the rapid development of renewable energy and the construction of smart grids, the demand for power converters is increasing day by day. In modern energy conversion systems, especially when different types of energy are mixedly utilized, there are a series of challenges.

[0003] The existing power conversion platforms still have the following problems:

[0004] 1. Problems such as inflexible interfaces, single functions, and cumbersome operations, which are relatively limited in function switching and status control, greatly restricting the scalability and application scope of the system.

[0005] 2. When the filter board is replaced by a pull-out structure, the platform carrying the filter board that is pulled out is prone to bending under the action of gravity. After multiple uses, the pull-out slide rail is bent and deformed, and when pulling out again, problems such as unsmooth pulling or even serious blockage resulting in inability to pull out will occur. Content of the Utility Model

[0006] In view of the above problems, the utility model provides a reusable DCDC and DCAC converter, which has the advantages of meeting the needs of different access devices, improving operation portability and function flexibility, etc.

[0007] The technical solution it adopts is that the utility model includes a chassis shell, a main board is arranged inside the chassis shell, a moving board that slides left and right is arranged at the rear side of the main board, a filter board is fixedly connected to the moving board, a multi-stage slide rail is arranged between the moving board and the chassis shell, a through hole matching the moving board is opened on the outer wall of the chassis shell, a side board is fixedly connected to one end of the moving board close to the through hole, air vents are respectively opened on the front and rear sides of the chassis shell, and the air vents on the front and rear sides form a front-to-back through air duct inside the chassis shell;

[0008] Two symmetrically distributed sleeves are rotatably connected to the inner wall of the chassis shell, a connecting rod is slidably connected inside the sleeve, a blocking block is arranged on the connecting rod, the blocking block is connected to the sleeve through a spring, two symmetrically distributed connecting blocks are fixed on one side of the moving board close to the side board, and one ends of the two connecting rods passing through the sleeve are respectively rotatably connected to the corresponding connecting blocks.

[0009] Preferably, the cross-sections of the two sleeves are semi-circular structures, threaded grooves are opened at one ends of the two connecting rods far from the connecting blocks, the blocking block is threadedly connected to the connecting rod, and a plurality of circumferentially evenly distributed fixing blocks are fixed on the outer edge of the blocking block.

[0010] Preferably, scale plates matching the stoppers are fixed to one side of each of the two sleeves.

[0011] Preferably, slots are provided on the outer wall of the chassis housing on both sides of the through hole. A placement seat is fixed to the outer wall of the chassis housing. Two symmetrically distributed insertion rods are inserted into the placement seat. Two symmetrically distributed positioning blocks are fixed to the side of the moving plate away from the side plate.

[0012] Preferably, a handle is fixed to the side plate. A placement groove matching the side plate is provided at the outer edge of the through hole. A shock pad is provided in the placement groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Through the settings of the moving plate, multi-stage slide rails, side plates, through holes, etc., the filter plate is replaced in a form of side drawing. It can support a variety of power conversion modes, including DC / DC and DC / AC conversions, as well as a variety of control modes (such as open-loop control, current control, voltage control, etc.). This enables the device to adapt to a variety of different application requirements, from photovoltaic power generation to energy storage battery systems, to wind power generation, and various DC and AC loads.

[0015] 2. Through the settings of the sleeves, connecting rods, stoppers, and connecting blocks, when the worker pulls out the moving plate, the spring in the connecting rod and the sleeve is compressed. The connecting rod and the sleeve provide a vertical force and a horizontal force to the moving plate. The vertical force can reduce or even avoid the drooping of the end of the moving plate, thereby ensuring the smoothness of the drawing of the moving plate and avoiding problems such as unsmooth drawing of the moving plate or even inability to pull out the moving plate.

[0016] 3. Through the settings of the threaded grooves and fixing blocks, the worker rotates and adjusts the stopper according to the different weights of the filter plates, thereby adjusting the compression amount of the spring. The greater the weight, the greater the compression amount of the spring at the initial position, so as to realize the application of different types of filter plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present utility model.

[0018] Figure 2 is a schematic diagram of the filter plate and its connecting parts in the present utility model.

[0019] Figure 3 is a schematic diagram of the multi-stage slide rail in the present utility model.

[0020] Figure 4 is a schematic diagram of the stopper and its connecting parts in the present utility model.

[0021] Figure 5 It is a schematic diagram of the placement groove and the connecting piece in the present utility model.

[0022] Figure 6 It is a schematic diagram of the insertion rod and the connecting piece in the present utility model.

[0023] Explanation of the reference numerals in the schematic diagram:

[0024] 1. Chassis housing; 2. Main board; 3. Moving board; 4. Filter board; 5. Multi-stage slide rail; 6. Side plate; 7. Sleeve; 8. Connecting rod; 9. Stopper; 10. Scale board; 11. Slot; 12. Placement seat; 13. Insertion rod; 14. Positioning block; 15. Placement groove. Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Provided by Figures 1 to 4 It includes a chassis housing 1, inside which there is a main board 2. A control module, a power module and a front panel interaction module are arranged on the main board 2. A moving board 3 that slides left and right is arranged at the rear side of the main board 2. A filter board 4 is fixedly connected to the moving board 3, and a replaceable filter module is inserted into the filter board 4. A multi-stage slide rail 5 is arranged between the moving board 3 and the chassis housing 1. In this embodiment, the slide rail is arranged in three stages, which is relatively common in the market and will not be elaborated here. A through hole matching the moving board 3 is opened on the outer wall of the chassis housing 1. One end of the moving board 3 close to the through hole is fixedly connected with a side plate 6. Ventilation holes are respectively opened on the front and rear sides of the chassis housing 1, and the ventilation holes on the front and rear sides form a front and rear through air duct inside the chassis housing 1. Through the settings of the moving board 3, the multi-stage slide rail 5, the side plate 6 and the through hole, the filter board 4 is replaced in a side-drawing form. When performing DC / DC conversion, an LC three-phase DC filter board 4 is used, and at the same time, the output end is connected to the DC end of the output side of the power terminal. When performing DC / AC conversion, an LCL three-phase AC filter board 4 is used, and at the same time, the output terminal is connected to the AC end of the output side of the power terminal. The change from DC / DC to DC / AC is achieved by replacing the filter board 4;

[0027] The software of the main board 2 and the filter board 4 integrates single-phase / three-phase BUCK open-loop control mode, single-phase / three-phase BUCK current control mode, single-phase / three-phase BUCK voltage control mode, single-phase / three-phase BOOST open-loop control mode, single-phase / three-phase BUCK current control mode, single-phase / three-phase BOOST voltage control mode under DC / DC conversion, single-phase / three-phase open-loop control, single-phase / three-phase AC current control, single-phase / three-phase AC voltage control, single-phase / three-phase DC voltage control and single-phase / three-phase power control under DC / AC conversion, as well as the maximum power tracking control of the photovoltaic inverter;

[0028] Considering the problem that the moving plate 3 is prone to bending under the action of gravity when the filter board 4 is replaced by using a pull-out structure, especially when the filter board 4 is inserted and removed, after repeated use, the slide rail under the moving plate 3 is prone to bending deformation, and problems such as difficult pulling or even serious blockage resulting in inability to pull out will occur during pulling. Two symmetrically distributed sleeves 7 are rotatably connected to the inner wall of the chassis housing 1. A connecting rod 8 is slidably connected in the sleeve 7. A stop block 9 is arranged on the connecting rod 8. The stop block 9 is connected to the sleeve 7 by a spring. Two symmetrically distributed connecting blocks are fixed on one side of the moving plate 3 close to the side plate 6. One end of each of the two connecting rods 8 passing through the sleeve 7 is rotatably connected to the corresponding connecting block. The sleeve 7, the connecting rod 8, the inner wall of the chassis housing 1 and the moving plate 3 form a bridge-type structure with a right-angled triangle cross-section. Through the settings of the sleeve 7, the connecting rod 8, the stop block 9 and the connecting block, etc., when the worker pulls out the moving plate 3, the spring in the connecting rod 8 and the sleeve 7 is compressed. The connecting rod 8 and the sleeve 7 provide a vertical force and a horizontal force to the moving plate 3. The vertical force can reduce or even avoid the end of the moving plate 3 from sagging, so as to ensure the smoothness of pulling out the moving plate 3 and avoid problems such as difficult pulling out or even inability to pull out the moving plate 3.

[0029] Reference Figures 3 to 4 As shown in the figure, considering that different types of filter boards 4 and the weights of the replaced filter boards 4 are different, and the spring has different requirements for the pulling force. When the pulling force provided by the spring is relatively low, the problem of the end of the moving plate 3 sagging will still occur. The cross-sections of the two sleeves 7 are semi-circular structures. Threaded grooves are opened at one ends of the two connecting rods 8 away from the connecting blocks. The stop block 9 is threadedly connected to the connecting rod 8. A plurality of circumferentially distributed fixing blocks are fixed on the outer edge of the stop block 9. Through the settings of the threaded groove and the fixing block, etc., the worker rotates and adjusts the stop block 9 according to the different weights of the filter board 4, so as to adjust the compression amount of the spring. The greater the weight, the greater the compression amount of the spring at the initial position, so as to realize the application of different types of filter boards 4.

[0030] Reference Figure 4As shown, since stoppers 9 are threadedly connected to both of the two connecting rods 8, when adjusting the stoppers 9, the adjustment amounts of the two stoppers 9 need to be the same. For the convenience of reference, scale plates 10 matching the stoppers 9 are fixed to one side of each of the two sleeves 7.

[0031] Reference Figures 5 to 6 As shown, after the moving plate 3 is pulled out, the worker needs to manually disassemble the filter plate 4 and then install another corresponding filter plate 4. At this time, the moving plate 3 needs good stability to prevent it from resetting under the pulling of the spring. Slots 11 are provided on the outer wall of the chassis housing 1 on both sides of the through hole. A placement seat 12 is fixed to the outer wall of the chassis housing 1. Two symmetrically distributed insertion rods 13 are inserted into the placement seat 12. Two symmetrically distributed positioning blocks 14 are fixed to the side of the moving plate 3 away from the side plate 6. A jack is provided in the positioning block 14. The worker only needs to take out the insertion rods 13 in the placement seat 12. When the jack on the positioning block 14 matches the slot 11, insert the insertion rods 13 into the jack and the slot 11.

[0032] Reference Figure 5 and Figure 6 As shown, a handle is fixed to the side plate 6. A placement groove 15 matching the side plate 6 is provided at the outer edge of the through hole. A shock pad is provided in the placement groove 15.

[0033] When the present utility model is in use:

[0034] First, the worker pulls out the moving plate 3 through the handle, and the filter plate 4 can be directly replaced;

[0035] Then, after the worker pulls out the moving plate 3, the springs in the connecting rods 8 and the sleeves 7 are compressed. The connecting rods 8 and the sleeves 7 provide a vertical force and a horizontal force to the moving plate 3. The vertical force can reduce or even avoid the end of the moving plate 3 from sagging;

[0036] Secondly, according to the different weights of the filter plates 4, the worker rotates and adjusts the stoppers 9 to adjust the compression amount of the springs. The greater the weight, the greater the compression amount of the springs at the initial position;

[0037] Finally, after the moving plate 3 is pulled out, the worker only needs to take out the insertion rods 13 in the placement seat 12. When the jack on the positioning block 14 matches the slot 11, insert the insertion rods 13 into the jack and the slot 11. After the filter plate 4 is replaced, take out the two insertion rods 13 in sequence.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A reusable DCDC, DCAC converter, comprising a chassis housing (1), characterized in that: A mainboard (2) is arranged inside the chassis shell (1), a movable plate (3) which slides left and right is arranged on the rear side of the mainboard (2), a filter plate (4) is fixedly connected to the movable plate (3), a multi-stage slide rail (5) is arranged between the movable plate (3) and the chassis shell (1), a through hole matching the movable plate (3) is opened on the outer wall of the chassis shell (1), a side plate (6) is fixedly connected to one end of the movable plate (3) close to the through hole, and ventilation holes are respectively opened on the front and rear sides of the chassis shell (1), and the ventilation holes on the front and rear sides form a front-to-back transparent air duct inside the chassis shell (1); Two symmetrically distributed sleeves (7) are rotatably connected to the inner wall of the chassis shell (1), a connecting rod (8) is slidably connected inside the sleeve (7), a stopper (9) is provided on the connecting rod (8), and the stopper (9) is connected to the sleeve (7) through a spring, and two symmetrically distributed connecting blocks are fixed on the side of the movable plate (3) close to the side plate (6), and one end of the two connecting rods (8) passes through the sleeve (7) and is rotatably connected to the corresponding connecting blocks respectively.

2. A reusable DCDC, DCAC converter according to claim 1, characterized in that: The cross-section of the two sleeves (7) is a semicircular structure, and a thread groove is provided at one end of the two connecting rods (8) away from the connecting block. The stopper (9) is threadedly connected to the connecting rod (8), and a plurality of fixing blocks evenly distributed around the circumference are fixed to the outer edge of the stopper (9).

3. A reusable DCDC, DCAC converter according to claim 2, characterized in that: A scale plate (10) matching the stopper (9) is fixed on one side of the two sleeves (7).

4. A reusable DCDC, DCAC converter according to claim 3, characterized in that: The outer wall of the chassis shell (1) is provided with slots (11) located on both sides of the through hole, a placement seat (12) is fixed on the outer wall of the chassis shell (1), two symmetrically distributed insertion rods (13) are inserted into the placement seat (12), and two symmetrically distributed positioning blocks (14) are fixed on the side of the movable plate (3) away from the side plate (6).

5. A reusable DCDC, DCAC converter according to claim 4, characterized in that: A handle is fixed on the side plate (6), a placement groove (15) matching the side plate (6) is arranged at the outer edge of the through hole, and a shock-absorbing pad is arranged in the placement groove (15).

Images