AC filter inductor fixing device of energy storage converter

Abstract

The utility model discloses an AC filter inductor fixing device of an energy storage converter, the bottom of an AC filter inductor is welded on a PCB, the PCB is provided with a plurality of first combination screws, a metal plate housing is provided with a plurality of hexagonal columns in a fastening manner, and the plurality of first combination screws are respectively in threaded fastening connection with the plurality of hexagonal columns; a plurality of second combined screws are arranged at the top of the alternating current filter inductor, a plurality of threaded holes are formed in a bridge metal plate, the bridge metal plate is installed on the metal plate shell, the second combined screws penetrate through the threaded holes respectively, and the tops of the second combined screws are fastened through hexagonal nylon locking nuts; namely, the bottom of the alternating current filter inductor is fixed on the metal plate shell together with the PCB through a hexagonal column, the top of the alternating current filter inductor is fixed through a bridge metal plate, and the bidirectional fixing mode enables the energy storage converter to achieve a vertical installation scene on the basis of a horizontal installation scene.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment installation of energy storage converters, and specifically to an AC filter inductor fixing device for an energy storage converter, so that the energy storage converter can be installed in a horizontal manner while taking into account a vertical installation scenario. Background Art

[0002] At present, in the energy storage converter system, the AC filter inductor is used as a filter in the circuit, and constitutes an LCL filter circuit with the L2 AC inductor and the AC filter capacitor to absorb harmonics on the IGBT side and the grid side, eliminate the harm of high-order harmonics to other electrical equipment in the main system, and improve the system power factor and safety.

[0003] When the energy storage converter is installed vertically, the inductor in the energy storage converter has a heavy weight and will have a certain degree of self-vibration during operation. This will cause great stress on the inductor solder pins and PCB board. Therefore, in order to ensure the reliability of the equipment, the AC filter inductor needs to be fixed in both directions.

[0004] In order to solve the above technical problems, the utility model proposes an AC filter inductor fixing device for an energy storage converter. Utility Model Content

[0005] In view of the defects in the prior art, the purpose of the utility model is to provide an AC filter inductor fixing device for an energy storage inverter, wherein the bottom of the AC filter inductor is welded on a PCB board, a plurality of first combination screws are arranged on the PCB board, a plurality of hexagonal columns are fastened on a sheet metal shell, and the plurality of first combination screws are respectively threadedly fastened with the plurality of hexagonal columns; a plurality of second combination screws are arranged on the top of the AC filter inductor, a plurality of threaded holes are arranged on a bridge sheet metal, the bridge sheet metal is installed on the sheet metal shell and a plurality of second combination screws respectively pass through a plurality of threaded holes, and the tops of the plurality of second combination screws are fastened with hexagonal nylon locking nuts; that is, the bottom of the AC filter inductor is fixed to the sheet metal shell together with the PCB board through the hexagonal columns and the top of the AC filter inductor is fixed through the bridge sheet metal, and this two-way fixing method enables the energy storage inverter to achieve a horizontal installation scenario while taking into account a vertical installation scenario.

[0006] Specifically, the technical problem to be solved by the utility model is to provide an AC filter inductor fixing device for an energy storage inverter in view of the deficiencies in the above-mentioned prior art, wherein the bottom of the AC filter inductor is detachably connected to the bottom of the sheet metal shell through a bottom connecting piece, and the top of the AC filter inductor is detachably connected to the side wall of the sheet metal shell through a top connecting piece.

[0007] Preferably, the bottom connecting piece is the bottom of the AC filter inductor welded on a PCB board, a plurality of first assembly screws are provided on the PCB board, a plurality of hexagonal columns are fastened on the sheet metal shell, and the plurality of first assembly screws are respectively fastened and connected with the plurality of hexagonal column threads.

[0008] Preferably, the top connecting member is provided with a plurality of second combination screws on the top of the AC filter inductor, a plurality of threaded holes are provided on the bridge sheet metal, the bridge sheet metal is installed on the sheet metal shell and the plurality of second combination screws pass through the plurality of threaded holes respectively, and the tops of the plurality of second combination screws are fastened with hexagonal nylon locking nuts.

[0009] Preferably, the number of the AC filter inductors is three or more.

[0010] Preferably, the AC filter inductors are soldered on a PCB board, and there is a gap between each of the AC filter inductors.

[0011] Preferably, the PCB board is an LCL filter PCB board.

[0012] Preferably, the AC filter inductor is a single-phase AC filter inductor.

[0013] Compared with the prior art, the positive effects of the utility model are as follows: the purpose of the utility model is to overcome the situation that the inductor body in the energy storage converter is relatively heavy and there will be a certain degree of self-vibration during operation, which will cause great stress on the inductor solder pins and the PCB board, thereby improving the reliability of stable operation of the equipment. Compared with the products of other converter manufacturers, the utility model has the following advantages: when the converter is installed vertically, the stress caused by the weight of the inductor body on the inductor solder pins and the PCB board is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded view of the AC filter inductor fixing device of the energy storage converter in the utility model;

[0015] Figure 2 This is a front view of the AC filter inductor fixing device of the energy storage converter in the utility model after assembly;

[0016] The markings in the attached drawings are: a- hexagonal nylon locking nut, b- bridge sheet metal, c- AC filter inductor, d- first combination screw, e- hexagonal column, f- sheet metal shell. DETAILED DESCRIPTION

[0017] Combine the following Figure 1-2 The utility model is further described with specific implementation methods.

[0018] See attached Figure 1-2The utility model conceives an AC filter inductor fixing device for an energy storage converter, wherein the bottom of the AC filter inductor c is detachably connected to the bottom of a sheet metal housing f through a bottom connector, and the top of the AC filter inductor c is detachably connected to the side wall of the sheet metal housing f through a top connector;

[0019] The bottom connecting piece is the bottom of the AC filter inductor c welded on the PCB board, the PCB board is provided with a plurality of first assembly screws d, a plurality of hexagonal columns e are fastened on the sheet metal shell f, and the plurality of first assembly screws d are respectively threadedly fastened with the plurality of hexagonal columns e;

[0020] The top connecting member is a plurality of second assembly screws disposed on the top of the AC filter inductor c, a plurality of threaded holes are disposed on the bridge sheet metal b, the bridge sheet metal b is mounted on the sheet metal housing f and the plurality of second assembly screws pass through the plurality of threaded holes respectively, and the tops of the plurality of second assembly screws are fastened with hexagonal nylon locking nuts a;

[0021] The number of the AC filter inductors c is three or more;

[0022] The AC filter inductors c are soldered on the PCB board, and there is a gap between each of the AC filter inductors c;

[0023] The PCB board is an LCL filter PCB board;

[0024] The AC filter inductor c is a single-phase AC filter inductor.

[0025] In actual use, first fasten the hexagonal column e to the sheet metal shell f, then use the first combination screw d to fasten the bottom of the AC filter inductor c on the sheet metal shell f, and then install the bridge sheet metal b on the sheet metal shell f and fasten it together with the top of the AC filter inductor c with the second combination screw and hexagonal nylon locking nut a.

[0026] Compared with the prior art, the positive effect of the utility model is: the purpose of the utility model is to overcome the situation that when the converter is installed vertically, the inductor body in the energy storage converter is heavy and there will be a certain degree of self-vibration during operation, which will cause great stress on the inductor solder pins and the PCB board, thereby improving the reliability of stable operation of the equipment. Compared with the products of other converter manufacturers, the utility model has the following advantages: when the converter is installed vertically, the stress caused by the weight of the inductor body on the inductor solder pins and the PCB board is reduced.

[0027] In summary, the above only embodies the preferred technical solution of the present utility model. Any changes that may be made to certain parts thereof by those skilled in the art all embody the principles of the present utility model and should all be within the technical scope of the present utility model.

Claims

1. An AC filter inductor fixing device for an energy storage converter, characterized in that: The bottom of the AC filter inductor (c) is detachably connected to the bottom of the sheet metal shell (f) via a bottom connector, and the top of the AC filter inductor (c) is detachably connected to the side wall of the sheet metal shell (f) via a top connector.

2. The AC filter inductor fixing device of the energy storage converter according to claim 1, characterized in that: The bottom connecting piece is the bottom of the AC filter inductor (c) welded on the PCB board, a plurality of first assembly screws (d) are arranged on the PCB board, a plurality of hexagonal columns (e) are fastened on the sheet metal shell (f), and the plurality of first assembly screws (d) are respectively threadedly fastened with the plurality of hexagonal columns (e).

3. The AC filter inductor fixing device of the energy storage converter according to claim 2, characterized in that: The top connecting member is a plurality of second combination screws arranged on the top of the AC filter inductor (c), a plurality of threaded holes are arranged on the bridge sheet metal (b), the bridge sheet metal (b) is installed on the sheet metal shell (f) and the plurality of second combination screws respectively pass through the plurality of threaded holes, and the tops of the plurality of second combination screws are fastened with hexagonal nylon locking nuts (a).

4. The AC filter inductor fixing device of the energy storage converter according to claim 3, characterized in that: The number of the AC filter inductors (c) is three or more.

5. The AC filter inductor fixing device of the energy storage converter according to claim 4, characterized in that: The AC filter inductors (c) are soldered on the PCB board, and there is a gap between each of the AC filter inductors (c).

6. The AC filter inductor fixing device of the energy storage converter according to claim 5, characterized in that: The PCB board is an LCL filter PCB board.

7. The AC filter inductor fixing device of the energy storage converter according to claim 6, characterized in that: The AC filter inductor (c) is a single-phase AC filter inductor.

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