CN218941055U

CN218941055U - A kind of power-on pen used for EL detection

Info

Publication number: CN218941055U
Application number: CN202320028836.7U
Authority: CN
Inventors: 汤继威; 王安林
Original assignee: Jiangsu Sunport Power Corp Ltd
Current assignee: Jiangsu Sunport Power Corp Ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-04-28
Anticipated expiration: 2033-01-06

Abstract

The utility model discloses an energizing pen for EL detection, which comprises a pen-shaped shell, a copper sheet and a telescopic buffer mechanism, wherein the copper sheet is strip-shaped and is arranged in the shell, one section of the copper sheet near the tail end of the pen-shaped shell is connected with a wiring terminal, and one end of the copper sheet near the pen-shaped shell is connected with the telescopic buffer mechanism; the telescopic buffer mechanism comprises a positioning block and a telescopic copper column, wherein the positioning block is connected with and fixes one end of a copper sheet and one end of the telescopic copper column, the other end of the copper column extends out of the shell and is connected with a cylindrical and smooth conductive contact surface, and the conductive contact surface is in contact with the photovoltaic module. The power-on pen can directly apply voltage to the photovoltaic module, simplifies the testing process, and reduces and avoids the problem that the internal battery of the photovoltaic module is hidden to be cracked due to manual welding of the outgoing line.

Description

A kind of power-on pen used for EL detection

Technical Field

The utility model belongs to the technical field of solar module production test, and particularly relates to an energizing pen for EL detection.

Background

EL detection is a method for utilizing an electroluminescence principle, applying forward voltage to a photovoltaic module through a direct-current stabilized power supply to enable electrons and holes of a battery piece of the photovoltaic module to be combined, emitting photons with a wave band of 1100um, utilizing a CCD camera to assist in capturing the photons, and obtaining a luminous image of the photovoltaic module, and utilizing the obtained image to judge internal defects of the photovoltaic module.

MWT (Metal Wrap Through, metal perforation winding) is a high-efficiency back contact photovoltaic module technology, and the back uses a conductive core plate to connect the cells, so that the light receiving area of the photovoltaic module is increased, and the efficiency of the photovoltaic module is improved. When a laboratory tests a new material, the production and manufacturing flow of the MWT photovoltaic module is required to be simulated to manufacture the sample photovoltaic module, and the reliability of the new material is tested. Because the MWT photovoltaic module is an efficient back contact technology, the back surface of the MWT photovoltaic module is provided with the conductive core plate, and the lead-out wire is required to be welded firstly, EL detection can be carried out, hidden cracks are easily caused to the photovoltaic cells inside the photovoltaic module in the process of tedious and manual welding, and the accuracy of the reliability test result of the novel material is affected.

Disclosure of Invention

In order to solve the problems, the utility model provides a power-on pen for EL detection, which can reduce and avoid the problem that the hidden crack is caused by the battery in the photovoltaic module due to manual welding of an outgoing line.

The utility model provides a power-on pen for EL detects, includes pen-shaped shell, copper sheet and flexible buffer gear, the copper sheet is the strip, places in the shell, and the terminal is connected to the terminal of this copper sheet near pen-shaped shell end, and flexible buffer gear is connected to pen-shaped shell nib one end of being close; the telescopic buffer mechanism comprises a positioning block and a telescopic copper column, wherein the positioning block is connected with and fixes one end of a copper sheet and one end of the telescopic copper column, the other end of the copper column extends out of the shell and is connected with a cylindrical and smooth conductive contact surface, and the conductive contact surface is in contact with the photovoltaic module.

Preferably, the wiring terminal, the copper sheet, the positioning block, the telescopic copper column and the conductive contact surface are sequentially and coaxially connected and are arranged in the center position in the shell.

Preferably, the compression spring is wound around the telescopic copper column, the telescopic copper column can synchronously stretch and retract with the compression spring, the manual handheld downward pressure is buffered, and the situation that the internal battery of the photovoltaic module is hidden and cracked due to the fact that the instantaneous downward pressure is too large is prevented.

Preferably, a groove matched with the copper sheet is arranged in the shell so as to fix the position of the copper sheet. One end of the pen point of the shell is inwards provided with a groove for accommodating the telescopic copper column, and the positioning block is arranged in the groove and is contacted with the inner walls at two sides of the groove.

Preferably, the pen-shaped housing end is provided with a removable insulating cap which is threadedly connected to the housing end.

Preferably, the pen-shaped shell is wrapped by insulating rubber, and the middle holding part is provided with an anti-slip adhesive tape.

Preferably, the energizing pens are used in pairs, one connecting terminal is connected with the positive electrode of the direct-current stabilized power supply, one connecting terminal is connected with the negative electrode of the direct-current stabilized power supply, and the conductive contact surface at the pen point is directly contacted with the outgoing line of the MWT photovoltaic module to apply voltage to the outgoing line.

The beneficial effects of the utility model are as follows:

(1) Compared with the existing test flow, the test procedure is simplified, the photovoltaic module can be directly powered on by using the power-on pen without welding the outgoing line, the test efficiency is improved, hidden cracks of the battery in the photovoltaic module in the welding process are effectively avoided, and the accuracy of the reliability test result is improved;

(2) The tail end of the power-on pen is provided with the conductive contact surface, so that the contact surface is stressed uniformly when the power-on pen is used, and the problem of hidden cracking of a battery in the photovoltaic module caused by uneven stress is prevented.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described below.

FIG. 1 is a schematic diagram of the overall structure of a pair of power pens according to one embodiment of the utility model;

FIG. 2 is a schematic diagram of the internal construction of a power-on pen according to one embodiment of the utility model;

FIG. 3 is a schematic diagram of a power-on pen buffer retraction mechanism according to one embodiment of the present utility model.

Reference numerals: the device comprises a 1-powered pen polarity marker, a 2-anti-slip sleeve, a 3-compression spring, a 4-electric terminal, a 5-copper sheet, a 6-positioning block, a 7-telescopic copper column, an 8-conductive contact surface and a 9-detachable insulating cap.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model provides a power-on pen for EL detection, as shown in figures 1-2, a power-on pen shell is of a pen-shaped structure, is convenient to hold, is wrapped by insulating rubber, has good insulativity, and effectively avoids the occurrence of electric shock safety. The tail end of the shell is in threaded connection with a detachable insulating cap 9, and the detachable insulating cap 9 is provided with a polarity sign 1 of the power-on pen. The middle part of the shell is provided with a sliding stop sleeve 2 in a holding way, the sliding stop sleeve 2 is made of anti-slip silica gel, and the sliding stop sleeves are distributed at intervals in a strip shape. The shell is internally provided with a through groove matched with the copper sheet 5 so as to fix the copper sheet 5. The copper sheet 5 is flat and strip-shaped, and two ends of the copper sheet 5 are respectively connected with the wiring terminal 4 and the telescopic buffer mechanism.

As shown in fig. 3, the telescopic buffer mechanism comprises a compression spring 3, a positioning block 6, a telescopic copper column 7 and a conductive contact surface 8. The positioning block 6 is a sheet-shaped conducting piece, two sides of the positioning block are fixed on two inner walls of a groove at the pen point of the pen-shaped shell, the upper end face and the lower end face are respectively connected with a copper sheet and a telescopic copper column 7, the telescopic copper column 7 extends out of the shell, the periphery of the telescopic copper column is wrapped with the compression spring 3, copper has good conductivity, the compression spring 3 in the telescopic buffer mechanism buffers the manually held downward pressure by utilizing the characteristics of compression deformation and tearing force resilience of the compression spring 3, and the phenomenon that the battery inside the photovoltaic module is hidden to be cracked due to the fact that the instant downward pressure is too large is prevented, so that the occurrence of hidden cracking of the battery inside the photovoltaic module is reduced and avoided, and the accuracy of a reliability test result is improved; by utilizing the characteristic that the spring removes the force and can rebound, the telescopic mechanism can rebound to an unstressed compressed state.

The end of the telescopic copper column 7 far away from the positioning block 6 is connected with a conductive contact surface 8. In the embodiment, the conductive contact surface 8 is of a cylindrical structure with the diameter of 7mm and the height of 2mm, and the contact surface is a smooth plane, so that the contact surface is balanced in stress, hidden cracks of batteries in the photovoltaic module caused by uneven stress are prevented, and the accuracy of a reliability test result is improved.

The utility model can directly contact with the outgoing line position of the MWT photovoltaic module and apply forward voltage, so that the outgoing line welding process is omitted, hidden cracks of the battery in the photovoltaic module in the welding process are effectively avoided, and the accuracy of the reliability test result is improved.

The method of using the power-on pen for EL detection is as follows:

1. respectively opening a pair of detachable insulating caps at the top of the energizing pen, respectively connecting 1.5 square copper wires to the wiring terminals, and covering the insulating caps; the positive electrode and the negative electrode of the conductive pen are connected with the positive electrode and the negative electrode of the direct current stabilized power supply; the direct-current stabilized power supply is electrified according to the polarity of the conductive pen;

2. the two hands respectively hold the energizing pens with different polarities, find out the positions of the outgoing lines with the corresponding polarities of the photovoltaic module, press down vertically, check the current and voltage changes of the stabilized voltage power supply, and confirm whether the power is normally electrified;

3. and (3) EL detection is carried out, the conductive pen is removed after detection is finished, and the conductive pen is placed in a distinguishing mode, so that short circuit caused by contact is prevented.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a power-on pen for EL detects which characterized in that, including pen-shaped shell, copper sheet and flexible buffer gear, the copper sheet is the strip, places in the shell, and the copper sheet is close a pen-shaped shell terminal one section and is connected binding post, and the flexible buffer gear is connected to nearly pen-shaped shell nib one end; the telescopic buffer mechanism comprises a positioning block and a telescopic copper column, wherein the positioning block is connected with and fixes one end of a copper sheet and one end of the telescopic copper column, the other end of the copper column extends out of the shell and is connected with a cylindrical and smooth conductive contact surface, and the conductive contact surface is in contact with the photovoltaic module.

2. The pen of claim 1, wherein the terminal, copper sheet, positioning block, retractable copper post and conductive contact surface are coaxially connected in sequence and are disposed at a central position within the housing.

3. The power pen for EL detection as claimed in claim 2, wherein the retractable copper pillar is wound around with a compression spring, and the retractable copper pillar is retractable in synchronization with the compression spring.

4. A power-on pen for EL detection as claimed in claim 3, wherein a recess is provided inside the housing to match with the copper sheet to fix the position of the copper sheet; one end of the pen point of the shell is inwards provided with a groove for accommodating the telescopic copper column, and the positioning block is arranged in the groove and is contacted with the inner walls at two sides of the groove.

5. The powered pen for EL detection as claimed in claim 4 wherein the pen-like housing end is provided with a removable insulating cap which is threadably connected to the housing end.

6. The powered pen for EL detection as claimed in claim 5, wherein the pen-shaped housing is wrapped with insulating rubber, and the middle hand grip portion is provided with an anti-slip adhesive strip.