CN219142671U - Photovoltaic cell string EL detects frock - Google Patents

Abstract

The utility model relates to a photovoltaic cell cluster EL detects frock, including separable setting up briquetting and lower briquetting on the ground, the welding strip of photovoltaic cell cluster can press from both sides and go up the electricity and detect between last briquetting and lower briquetting, and the welding strip is along the many of battery piece interval arrangement and stretch out the battery piece in the second direction, wherein, goes up briquetting or lower briquetting have a plurality of detection portion that are used for with welding strip contact, and the orthographic projection of a plurality of detection portions in the first direction can cover the whole first direction of corresponding briquetting. Be provided with detection portion on last briquetting and lower briquetting, a plurality of detection portions can not exist the space in the ascending projection of first direction, make stretch into the welding strip between last briquetting and the lower briquetting can not fall to avoid the welding strip easily to fall and lead to the condition that goes up the electricity bad and appear black screen or head and tail piece shadow can't accurately discern between the gap, pack the testing result that detects frock.

Description

Photovoltaic cell string EL detects frock

Technical Field

The disclosure relates to the field of photovoltaic equipment, in particular to a photovoltaic cell string EL detection tool.

Background

At present, near infrared detection is performed by an electroluminescence principle, so that common hidden defects (EL defects) in the battery piece, such as hidden cracks, cold joint, broken grids and the like, can be detected. In the related art, the EL detection tool for the battery string can lead to cracks to appear at the lower part of the tool when being used for a long time, if the upper part is an integral copper block, the lower part is a split copper block, gaps also exist between the lower copper blocks, when the battery string is electrified, welding strips are easy to fall between the gaps to cause poor electrification, black screens or head-tail piece shadows are caused, and accurate identification cannot be realized.

Disclosure of Invention

The utility model aims at providing a photovoltaic cell cluster EL detects frock to solve among the prior art, battery string welding area easily falls and leads to the electricity bad between the gap, leads to appearing the condition of black screen or head and tail piece shadow.

In order to achieve the above-mentioned purpose, the present disclosure provides a photovoltaic cell cluster EL detects frock, including detachably setting up briquetting and lower briquetting, the welding strip of photovoltaic cell cluster can press from both sides go up the briquetting with go up between the briquetting down, the welding strip is along the first direction interval arrangement's of battery piece many and stretch out in the second direction the battery piece, wherein, go up the briquetting or lower briquetting have a plurality of be used for with welding strip contact detection portion, a plurality of the orthographic projection of detection portion in the first direction can cover the whole first direction of corresponding briquetting.

Optionally, the upper pressing block comprises a fixed block, the detection part is a pressing needle penetrating through and connected with the fixed block, wherein a plurality of pressing needles are arranged at intervals along a first direction and are arranged in multiple rows along a second direction, two adjacent rows of pressing needles are arranged in a staggered mode, and the projection length of the multiple rows of pressing needles in the first direction is equal to the length of the upper pressing block in the first direction.

Optionally, in the first direction, a width B of each of the pressing pins is greater than a spacing D between two pressing pins of an adjacent row.

Optionally, the pressing pin is movably arranged on the fixed block, the upper pressing block further comprises a first buffer piece sleeved on the pressing pin, one end of the pressing pin is provided with a stop part, one end of the first buffer piece is fixed and abutted on the fixed block, and the other end of the first buffer piece is abutted on the stop part.

Optionally, the lower pressing block comprises a base and a strip block fixed on the base and extending along a first direction, and the extending part of the welding strip can be lapped on the lower pressing block;

two long strip blocks are arranged on the base, extend in the same direction and are arranged at intervals in the second direction.

Optionally, the lower briquetting includes the base, the detection portion is the polylith setting is in the top of base and along the briquetting monomer of first direction concatenation, two adjacent briquetting monomer on one form the bulge, on the other form hold the recess of bulge, the extension of welding area can overlap joint on the briquetting monomer, the polylith briquetting monomer is equal to the length of base in first direction in the projection of first direction.

Optionally, the plurality of briquetting monomers are the same structure, and when the lower briquetting is separated from the upper briquetting, the plurality of briquetting monomers are located in the same height direction.

Optionally, each press block unit includes a main body portion, and a support column vertically connected to the main body portion, wherein an opening is formed on one side of the support column on the main body portion to form the concave portion, and the other side of the support column protrudes to form the protruding portion.

Optionally, the base is provided with a containing hole, the lower pressing block further comprises a second buffer piece sleeved on the supporting column, one end of the second buffer piece abuts against the pressing block monomer, and the other end of the second buffer piece abuts against the base.

Optionally, the upper press block is a long bar extending in the first direction.

Through above-mentioned technical scheme, be provided with detection portion on last briquetting or lower briquetting, a plurality of detection portion can not exist the space in the ascending projection of first direction, makes the welding strip that stretches into between last briquetting and the lower briquetting along first direction distribution can not fall to avoid the welding strip easily to fall and lead to going up the condition that the poor and appear black screen or head and tail piece shadow can't accurately discern between the gap, avoid the gap problem between the briquetting, effectively solve this problem from preventing slow-witted angle, guarantee the testing result that detects the frock.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a schematic diagram of a photovoltaic cell string EL detection tool according to one embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a photovoltaic cell string placed on a photovoltaic cell string EL detection tool according to one embodiment of the present disclosure.

Fig. 3 is a schematic diagram of a photovoltaic cell string EL detection tool according to another embodiment of the present disclosure.

Fig. 4 is a schematic diagram of a photovoltaic cell string placed on a photovoltaic cell string EL detection tool according to another embodiment of the present disclosure.

Description of the reference numerals

1-pressing the block; 11-a base; 12-briquetting the monomers; 121-a protrusion; 122-recesses; 13-supporting columns; 14-a second cushioning member; 2-pressing into blocks; 21-a fixed block; 22-pressing the needle; 221-a stop; 23-a first buffer; 31-welding the tape; 32-battery plate.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise stated, terms such as "upper" and "lower" are defined with respect to an arrangement direction of the inspection tool when actually used, and terms such as "first" and "second" are used for distinguishing different components and are not sequential or significant. Furthermore, in the following description, when referring to the drawings, the same reference numerals in different drawings denote the same or similar elements unless otherwise explained.

According to an embodiment of the disclosure, as shown in fig. 1 to 4, there is provided a photovoltaic cell string EL detection tool, including an upper press block 2 and a lower press block 1 which are detachably disposed, a welding strip 31 of a photovoltaic cell string can be clamped between the upper press block 2 and the lower press block 1 to perform power-on detection, the welding strip 31 is a plurality of pieces arranged at intervals along a first direction of a battery piece 32 and extends out of the battery piece 32 in a second direction, wherein the upper press block 2 or the lower press block 1 may have a plurality of detection portions for contacting with the welding strip 31, and projections of the plurality of detection portions in the first direction can cover the entire first direction of the corresponding press block. Here, it should be noted that, in the embodiment where the upper pressing block 2 is provided with the detecting portion, the lower pressing block 1 is a long bar, and in the embodiment where the lower pressing block 1 is provided with the detecting portion, the upper pressing block 2 is a long bar, where the long bar may be made of copper, and other conductive materials are also within the protection scope of the present disclosure. In addition, "orthographic projection of the plurality of detection parts in the first direction can cover the whole first direction of the corresponding press block" means that a gap does not exist in projection of the plurality of detection parts in the first direction, so that a welding strip extending between the upper press block and the lower press block cannot fall down.

Through above-mentioned technical scheme, can be provided with detection portion on last briquetting 2 or lower briquetting 1, a plurality of detection portions can not have the space in the projection of first direction, make stretch into the welding strip 31 that goes up briquetting 2 and lower briquetting 1 along first direction distribution can not fall to avoid the welding strip easily to fall and lead to going up the bad condition that appears black screen or head and tail piece shadow can't accurately discern between the gap, avoid the gap problem between the briquetting, effectively solve this problem from preventing slow-witted angle, guarantee the testing result that detects the frock.

As shown in fig. 1 and 2, the lower press block 1 includes a base 11 and an elongated block fixed to the base 11 and extending in a first direction, one of which is a length direction of the battery piece 32 and the other of which is a width direction of the battery piece 32, and the protruding portion of the welding strip 31 can overlap the lower press block 1. The lower pressing block 1 is a whole block without gaps, so that the welding strip 31 falls onto the whole block and can be normally detected. In the embodiment provided by the disclosure, the welding strips 31 are arranged at intervals along the length direction of the battery piece 32, the battery piece 32 is stretched out along the width direction, the battery piece 32 is placed on one side of the detection tool, the stretching part of the welding strip 31 is lapped on the lower pressing block 1, the upper pressing block 2 is lowered to be jointed with the upper pressing block 2, and the welding strip 31 is pressed between the upper pressing block and the lower pressing block to carry out power-on detection.

As shown in fig. 1, the base 11 may be provided with two elongated blocks extending in the same direction and spaced apart in the second direction. The detection tool can detect two battery strings from two directions, meanwhile, poor power-on can be avoided, and the use efficiency and the detection accuracy are improved.

In an exemplary embodiment of the present disclosure, that is, in an embodiment in which the lower press block 1 is a long bar block and the upper press block 2 is separately designed, as shown in fig. 1 and 2, the upper press block 2 may include a fixed block 21, the detecting portion may be a plurality of press pins 22 penetrating through and connected to the fixed block 21, the plurality of press pins 22 are arranged at intervals along the first direction, and the plurality of rows of press pins 22 are arranged along the second direction, two adjacent rows of press pins 22 are arranged in a staggered manner, and a projection length of the plurality of rows of press pins 22 in the first direction is equal to a length of the upper press block 2 in the first direction. In the embodiment of the staggered design of the pressing pins 22, as shown in fig. 2, the width B of each pressing pin 22 in the first direction is greater than the interval D between two pressing pins 22 in the adjacent row, so that the pressing pins 22 in the second row can fill the interval between two pressing pins 22 in the first row, the gap is not formed in the whole upper pressing block 2 in the first direction, and even if the welding strip 31 is positioned in the gap between the pressing pins 22 in the first row, the staggered arrangement of the pressing pins 22 in the second row can enable the welding strip 31 to fall between the pressing pins 22 in the second row and the lower pressing block 1, so that the condition of poor power-on of the welding strip is avoided. In the present disclosure, the number of rows of the pressing pins 22 may be designed as needed, not limited to the two rows shown in the drawings.

Further, as shown in fig. 1, the pressing pin 22 is movably disposed on the fixed block 21, the upper pressing block 2 may further include a first buffer member 23 sleeved on the pressing pin 22, one end of the pressing pin 22 is provided with a stop portion 221, one end of the first buffer member 23 is fixed and abuts against the fixed block 21, and the other end is used for abutting against the stop portion 221. The first buffer piece 23 compresses stored energy, slows down the rigid collision between the upper pressing block 2 and the lower pressing block 1, prevents the lower pressing block 1 from cracking, and influences detection. Through the buffer piece effect, can slow down the rigidity collision intensity of last briquetting 2 and briquetting 1 down, reduce the possibility of briquetting 1 fracture down, avoid going up the electric bad, prolong the life of last briquetting 2 simultaneously.

In another exemplary embodiment of the present disclosure, that is, in an embodiment in which the upper press block 2 is a long bar block and the lower press block 1 is separately designed, as shown in fig. 3 and 4, the lower press block 1 includes a base 11, the detecting part may be a plurality of press block units 12 disposed above the base 11 and spliced along a first direction, a protrusion 121 is formed on one of the adjacent two press block units 12, a recess 122 accommodating the protrusion 121 is formed on the other, and a projection of the plurality of press block units 12 in the first direction is equal to a length of the base 11 in the first direction. The protruding ends of the welding strips 31 can overlap the body portion of the press block units 12 or pass through gaps between two adjacent press block units 12 to overlap the protruding portions 121. The effort of briquetting 2 on can be with the effort dispersion of last briquetting 1 piecemeal to the design on a plurality of briquetting monomer 12, avoids stress concentration, effectively avoids lower briquetting 1 to appear the fracture, simultaneously, the existence of whole along the second direction extension gap can be avoided to the design of bulge 121 and concave part 122, makes the gap route become the route of buckling, like this, even weld on area 31 falls into the gap of adjacent briquetting monomer 12, its tip also can overlap joint on bulge 121, avoids the bad phenomenon of frock power on to produce. It should be noted that the number of the press block units 12 may be the number of the welding strips 31 of the battery string to be tested, which is not limited in the present disclosure.

Further, as shown in fig. 3 and 4, the plurality of briquette units 12 may be of the same structure, and the plurality of briquette units 12 are located in the same height direction when the lower briquette 1 is separated from the upper briquette 2. The briquetting monomer 12 is the same structure can make things convenient for the volume production, also makes things convenient for the concatenation of protruding portion 121 and concave portion 122 simultaneously, can not produce because the size shape is not to the condition that leads to unable concatenation gap to increase.

According to one embodiment of the present disclosure, as shown in fig. 3 and 4, each of the briquette units 12 may include a main body portion, and a support column 13 vertically connected to the main body portion, one side of the support column 13 on the main body portion being provided with an opening to form a concave portion 122, and the other side of the support column 13 being protruded to form a convex portion 121. The support column 13 is disposed on the main body of the press block unit 12, so as to conveniently maintain the balance of the press block unit 12, and the support column 13 can also simultaneously carry a buffer member to be described below, and play a role in buffering and supporting. The height of the support column 13 may be designed as needed so that the plurality of press block units 12 are located at the same height.

According to one embodiment of the present disclosure, as shown in fig. 3 and 4, the upper press block 2 may be a long bar extending in the first direction. The upper pressing block 2 has no gap, and is matched with the pressing block single body 12 with the convex part 121 and the concave part 122, so that the phenomenon of poor electrification of the battery string can be effectively avoided.

According to one embodiment of the present disclosure, as shown in fig. 3 and 4, the base 11 is formed with a receiving hole, and the buffer member may be a second buffer member 14 sleeved on the support column 13, where the support column 13 is partially embedded in the receiving hole, and where the partial embedding means that only a part of the body of the support column 13 is embedded in the receiving hole, and the single support column 13 is not fully embedded in the corresponding receiving hole. One end of the second buffer member 14 abuts against the briquette unit 12, and the other end abuts against the base 11. When the upper pressing block 2 presses the lower pressing block 1, the supporting columns 13 are pressed into the accommodating holes, meanwhile, the second buffer piece 14 is compressed to store energy, rigid collision between the upper pressing block 2 and the lower pressing block 1 is reduced, meanwhile, poor power-on can be avoided, and the service life and the detection accuracy of the tool are improved. Compared with the embodiment with only the buffer member, the embodiment can ensure the stability of the lower pressing block 1 while reducing the rigid collision between the upper pressing block 2 and the lower pressing block 1.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. The utility model provides a photovoltaic cell cluster EL detects frock, its characterized in that, including separable setting up briquetting and lower briquetting, the welding strip of photovoltaic cell cluster can press from both sides go up the briquetting with go up between the briquetting down, the welding strip is along the first direction interval arrangement of battery piece many and stretch out in the second direction the battery piece, wherein, go up the briquetting or lower briquetting have a plurality of be used for with welding strip contact detection portion, a plurality of the orthographic projection of detection portion in the first direction can cover the whole first direction of corresponding briquetting.

2. The photovoltaic cell string EL detection tool according to claim 1, wherein the upper press block comprises a fixed block, the detection part is a press needle penetrating through and connected to the fixed block, wherein a plurality of press needles are arranged at intervals along a first direction and are arranged in a plurality of rows along a second direction, two adjacent rows of press needles are arranged in a staggered manner, and the projection length of the plurality of rows of press needles in the first direction is equal to the length of the upper press block in the first direction.

3. The photovoltaic cell string EL detection tool of claim 2, wherein in the first direction, the width B of each of the press pins is greater than the spacing D between two of the press pins in an adjacent row.

4. The photovoltaic cell string EL detection tool according to claim 2, wherein the pressing pin is movably arranged on the fixed block, the upper pressing block further comprises a first buffer member sleeved on the pressing pin, one end of the pressing pin is provided with a stop part, one end of the first buffer member is fixed and abuts against the fixed block, and the other end of the first buffer member abuts against the stop part.

5. The photovoltaic cell string EL detection tool of any one of claims 2 to 4, wherein the lower press block includes a base and an elongated block fixed to the base and extending in a first direction, the protruding portion of the solder strip being capable of overlapping the lower press block;

two long strip blocks are arranged on the base, extend in the same direction and are arranged at intervals in the second direction.

6. The photovoltaic cell string EL detection tool according to claim 1, wherein the lower press block comprises a base, the detection part is a plurality of press block monomers which are arranged above the base and spliced along a first direction, a convex part is formed between two adjacent press block monomers, a concave part for accommodating the convex part is formed on the other press block monomer, the protruding part of the welding strip can be lapped on the press block monomers, and the projection of the plurality of press block monomers along the first direction is equal to the length of the base along the first direction.

7. The photovoltaic cell string EL detection tool according to claim 6, wherein a plurality of the press block monomers are of the same structure, and when the lower press block is separated from the upper press block, the plurality of press block monomers are located in the same height direction.

8. The photovoltaic cell string EL detection tool according to claim 6, wherein each of the press block units comprises a main body portion, and a support column vertically connected to the main body portion, wherein one side of the support column on the main body portion is provided with an opening to form the concave portion, and the other side of the support column protrudes to form the protruding portion.

9. The photovoltaic cell string EL detection tool according to claim 8, wherein the base is provided with a containing hole, the lower pressing block further comprises a second buffer member sleeved on the supporting column, the supporting column is partially embedded into the containing hole, one end of the second buffer member is propped against the pressing block monomer, and the other end of the second buffer member is propped against the base.

10. The photovoltaic cell string EL detection tool of any one of claims 6 to 9, wherein the upper press block is a long bar extending in a first direction.

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