Modularized structure of power supply module

Abstract

The utility model relates to the related technical field of power supply modules, in particular to a modular structure of a power supply module, which comprises an assembly shell arranged outside the power supply module, a protection circuit module is arranged on the power supply module, the assembly shell is arranged in an inner cavity of a charging pile, and a group of outer supporting protection plates are arranged on two opposite sides of the assembly shell. A connecting section composed of a plurality of branch sections is arranged at the end corners, close to each other, of one set of outer supporting protection plates, a connecting assembly is arranged between every two adjacent branch sections, airflow channels are formed in the outer supporting protection plates, and a damping mechanism for limiting and fixing a power module is arranged on the assembling shell. According to the utility model, the two oppositely distributed side plates are close to the two separated ends of the power supply module and are in close contact with the end face of the power supply module, and under the action of the side plates, the extrusion plates and the rubber pads, the impact and vibration on the power supply module can be effectively reduced; and external impact force can be partially absorbed or dispersed.

Description

Technical Field

[0001] The utility model relates to the technical field related to power modules, and in particular to a modular structure of a power module. Background Art

[0002] At present, the power module used in the charging pile receives the external input AC power and converts it into a DC power that meets the charging requirements of electric vehicles.

[0003] Therefore, the power module is required to conduct heat dissipation to the maximum extent while achieving the given function, so that the operating temperature of the entire power module is maintained at a safe level. In terms of structural configuration, the power module must have sufficient strength and rigidity to maintain the stable performance of its internal components under external force vibration, and must ensure easy installation, disassembly and maintenance, and reliable structure. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a modular structure of a power module to solve the technical problems raised by the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a modular structure of a power module, comprising an assembly shell arranged outside the power module, a protection circuit module arranged on the power module, the assembly shell arranged in the inner cavity of the charging pile, a group of outer support guard plates arranged on opposite sides of the assembly shell, a group of connecting sections consisting of a plurality of branch segments arranged at the adjacent end corners of the outer support guard plates, a connecting assembly arranged between two adjacent branch segments, an air flow channel arranged on the outer support guard plates, and a shock absorbing mechanism for fixing the power module with a limited position arranged on the assembly shell;

[0006] The shock absorbing mechanism includes side plates of an outer supporting guard plate arranged on opposite sides of the assembly shell, a plurality of springs are arranged on both sides of the side plates, an extrusion plate is arranged on the side plates, a cavity is arranged between the side plates and the extrusion plates, a rubber pad is arranged in the cavity, a three-layer structure stacked on the side plates, the extrusion plates and the rubber pad is provided with a plurality of slots for heat dissipation of the power module, and a linear screw and a horizontal guide rod are also arranged on the three-layer structure stacked on the side plates, the extrusion plates and the rubber pad.

[0007] Preferably, the connecting component includes two semicircular grooves arranged on two adjacent assembly shells, semicircular blocks are arranged in the semicircular grooves, the two semicircular grooves are spliced ​​into a complete cylindrical groove, the two semicircular blocks are spliced ​​into a complete cylindrical block, and a fixing ring is arranged outside the cylindrical block and inside the groove of the cylindrical groove.

[0008] Preferably, the linear screw is provided with two sections with opposite thread directions.

[0009] Preferably, the air flow channel adopts a serpentine distribution structure on the inner end surface of the outer support guard plate.

[0010] Preferably, the linear screw and the horizontal guide rod are respectively provided in two numbers and are arranged oppositely on two sides of the side plate.

[0011] Preferably, the side panels and the outer supporting guard plates are not arranged in a connected manner.

[0012] Preferably, an embedded operating handle is provided on one outer end of the linear screw and the horizontal guide rod.

[0013] By means of the above technical solution, the utility model provides a modular structure of a power module, which has at least the following beneficial effects:

[0014] 1. The utility model drives the linear screw to rotate through the embedded operating handle at the outer end of one side of the linear screw, so that the two parts with opposite thread directions on the linear screw synchronously drive the two relatively distributed side plates to move toward or away from each other under the guide limit of the horizontal guide rod, so that the two relatively distributed side plates are close to the two ends of the power module and keep close contact with the end surface of the power module. Under the action of the side plates, the extrusion plates and the rubber pads, the impact and vibration of the power module can be effectively reduced. At the same time, the elastic support of the spring can partially absorb or disperse the external impact force.

[0015] 2. The utility model can lighten the assembly shell by providing an airflow channel through the slots on the outer support guard plate. At the same time, the multiple slots provided through the slots increase the dissipation capacity of the power module and the external airflow, thereby maintaining communication with the external airflow and effectively avoiding heat accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0017] In the attached picture:

[0018] Figure 1 This is an overall three-dimensional structural diagram of a modular structure of a power module of the utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of an assembly shell in a modular structure of a power module of the utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of a shock absorbing mechanism in a modular structure of a power module of the utility model;

[0021] Figure 4A modular structure of a power module of the utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0022] In the figure: 1. assembly shell; 2. branch section; 3. connecting assembly; 31. semicircular groove; 32. semicircular block; 33. fixing ring; 4. air flow channel; 5. shock absorbing mechanism; 51. side plate; 52. spring; 53. extrusion plate; 54. notch; 55. linear screw; 56. horizontal guide rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] To conveniently repair or replace the power module on the charging pile, please refer to Figure 1-Figure 4 This is an embodiment of the utility model: a modular structure of a power module, including an assembly shell 1 covering the outside of the power module, and a protection circuit module is installed on the power module, including an overvoltage protection module, an overcurrent protection module, an overheating protection module, and a short-circuit protection module. These protection circuit modules can exist independently or be used together. They are usually implemented using protection circuit chips or dedicated integrated circuits to provide reliable overvoltage, overcurrent, overheating and short-circuit protection functions. The assembly shell 1 is fixed to the inner cavity of the charging pile in a removable plug-in manner. The modular design facilitates maintenance and upgrading. When a single module needs to be repaired or replaced, it can be easily extracted and replaced without replacing the entire power module system.

[0025] Among them, in order to facilitate the subsequent maintenance and repair of the assembly shell 1, two relatively distributed outer support guard plates are used on the assembly shell 1 in the technical solution. A connecting section composed of several branch segments 2 is installed at the adjacent end corners of a group of outer support guard plates, and a connecting component 3 is installed between two adjacent branch segments 2. Its specific structure includes two semicircular grooves 31 slotted on two adjacent assembly shells 1, a semicircular block 32 is welded at the center position of the inner circle of the semicircular groove 31, the two semicircular grooves 31 are spliced ​​into a complete cylindrical groove, and the two semicircular blocks 32 are spliced ​​into a complete cylindrical block. A fixed fixing ring 33 is sleeved on the outside of the cylindrical block and in the groove of the cylindrical groove. The fixing ring 33 is made of rubber. The fixing ring 33 is sleeved on the outside of the complete cylindrical block spliced ​​by the two semicircular blocks 32, and the damping performance of the connection is increased under the action of the rubber material. By separating the fixing ring 33, a certain branch segment 2 included in the assembly shell 1 can be quickly taken out and separated for replacement or maintenance, and the assembly of two adjacent branch segments 2 in the assembly shell 1 can also be achieved by sleeved with the fixing ring 33.

[0026] Among them, in order to increase the heat dissipation capacity, an air flow channel 4 is grooved on the outer support guard plate in the technical solution. The air flow channel 4 adopts a serpentine distribution structure on the inner end surface of the outer support guard plate. Through the air flow channel 4 grooved on the outer support guard plate, the shell 1 can be assembled in a lightweight manner and at the same time communicate with the external airflow to avoid heat accumulation.

[0027] Among them, in order to better limit and fix the power module and increase the seismic resistance of the power module, a shock absorbing mechanism 5 for limiting and fixing the power module is installed on the assembly shell 1 in the technical solution, and its specific structure includes a side plate 51 arranged at the proximal end of the outer support guard plate distributed on the opposite sides of the assembly shell 1, and the side plate 51 and the outer support guard plate are not designed to be connected. A plurality of springs 52 are welded on both sides of the side plate 51, and the end surface of the outer support guard plate in the assembly shell 1 is welded and fixed by the plurality of springs 52 on both sides. An extrusion plate 53 is installed on the side plate 51, and a cavity is reserved between the side plate 51 and the extrusion plate 53. An assembly rubber pad is inserted in the cavity. A linear screw 55 and a horizontal guide rod 56 are installed on the three-layer structure superimposed on the side plate 51, the extrusion plate 53 and the rubber pad. An embedded operating handle is welded to the outer end of one side of the linear screw 55 and the horizontal guide rod 56, and the embedded operating handle is slotted on the outer surface of the assembly shell 1. The linear screw 55 and the horizontal guide rod 56 are respectively provided with two and relatively distributed on both sides of the side plate 51. The linear screw 55 and the horizontal guide rod 56 can be directly separated from the two relatively distributed side plates 51 by screwing out. The linear screw 55 is provided with two parts with opposite thread directions. The linear screw 55 is driven to rotate by the embedded operating handle at the outer end of one side of the linear screw 55, so that the two parts with opposite thread directions thereon synchronously drive the two relatively distributed side plates 51 to move toward or away from each other under the guide limit of the horizontal guide rod 56, so that the two relatively distributed side plates 51 are close to the two ends of the power module and keep in close contact with the end face of the power module. Under the action of the side plate 51, the extrusion plate 53 and the rubber pad, the impact and vibration of the power module can be effectively reduced. At the same time, the elastic support of the spring 52 can partially absorb or disperse the external impact force.

[0028] Among them, in order to increase the dissipation capacity of the power module, the three-layer structure stacked on the side panel 51, the extrusion plate 53 and the rubber pad in the present technical solution is penetrated by a plurality of slots 54 for dissipating heat from the power module. The plurality of slots 54 are penetrated to further increase the dissipation capacity of the power module and the external airflow, thereby effectively preventing heat accumulation.

[0029] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes 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 apparatus.

[0030] 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 modular structure of a power module, comprising an assembly shell (1) arranged outside the power module, a protection circuit module being arranged on the power module, the assembly shell (1) being arranged in an inner cavity of a charging pile, a group of outer support guard plates being arranged on opposite sides of the assembly shell (1), a connecting section consisting of a plurality of branch segments (2) being arranged at adjacent end corners of a group of the outer support guard plates, a connecting component (3) being arranged between two adjacent branch segments (2), characterized in that: The outer support guard plate is provided with an air flow channel (4), and the assembly shell (1) is provided with a shock absorbing mechanism (5) for fixing the power module in a limited position; The shock absorbing mechanism (5) comprises a side plate (51) of an outer supporting guard plate arranged on opposite sides of the assembly shell (1), a plurality of springs (52) are arranged on both sides of the side plate (51), an extrusion plate (53) is arranged on the side plate (51), a cavity is arranged between the side plate (51) and the extrusion plate (53), a rubber pad is arranged in the cavity, a three-layer structure stacked on the side plate (51), the extrusion plate (53) and the rubber pad is provided with a plurality of slots (54) for heat dissipation of the power module, and a linear screw (55) and a horizontal guide rod (56) are also arranged on the three-layer structure stacked on the side plate (51), the extrusion plate (53) and the rubber pad.

2. The modular structure of a power module according to claim 1, characterized in that: The connection assembly (3) comprises two semicircular grooves (31) arranged on two adjacent assembly shells (1), a semicircular block (32) being arranged in the semicircular groove (31), the two semicircular grooves (31) being spliced ​​into a complete cylindrical groove, the two semicircular blocks (32) being spliced ​​into a complete cylindrical block, and a fixing ring (33) being arranged outside the cylindrical block and inside the cylindrical groove.

3. The modular structure of a power module according to claim 1, characterized in that: The linear screw (55) is provided with two sections of threads with opposite directions.

4. The modular structure of a power module according to claim 1, characterized in that: The air flow channel (4) adopts a serpentine distribution structure on the inner end surface of the outer support guard plate.

5. The modular structure of a power module according to claim 1, characterized in that: The linear screw rod (55) and the horizontal guide rod (56) are respectively provided in two numbers and are arranged oppositely on two sides of the side plate (51).

6. The modular structure of a power module according to claim 1, characterized in that: The side plate (51) and the outer supporting guard plate are not arranged in a connected manner.

7. The modular structure of a power module according to claim 1, characterized in that: An embedded operating handle is provided at one outer end of each of the linear screw rod (55) and the horizontal guide rod (56).

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