CN217387742U - Photovoltaic module test fixture and system - Google Patents

Abstract

The utility model discloses a photovoltaic module test fixture and system to avoid conducting block and conducting rod contact failure's phenomenon, guarantee the normal clear of photovoltaic module volt-ampere characteristic test work. Photovoltaic module test fixture is including bearing seat, conducting block and conducting rod, and two at least conducting blocks are used for the electricity to connect anodal lead-out wire and negative pole lead-out wire respectively, and the conducting block activity sets up in bearing the seat, and the conducting block has first electrically conductive connecting portion. One end of the conductive rod is provided with a second conductive connecting part which is used for being in contact conductive fit with the first conductive connecting part. The photovoltaic module test system comprises the photovoltaic module test tool and a tester.

Description

Photovoltaic module test fixture and system

Technical Field

The utility model relates to a photovoltaic module tests technical field, especially relates to a photovoltaic module tests frock and system.

Background

The volt-ampere characteristic test is used for testing the relation between output voltage and current of the photovoltaic module under a certain illumination condition.

At present, the volt-ampere characteristic test of the photovoltaic module is in an automatic test mode, during the test, the conductive block is tightly arranged on the photovoltaic module and is electrically connected with the photovoltaic module, and the conductive rod is electrically connected with a tester. The conducting rod moves towards the direction close to the conducting block and is contacted with the conducting block to realize electric conduction.

Because the conducting block is static state for photovoltaic module, when there is certain inclination or apart from the deviation between conducting rod and the conducting block, easily cause conducting block and conducting rod contact failure, influence test work's normal clear.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a photovoltaic module test fixture and system to avoid conducting block and conducting rod contact failure's phenomenon, guarantee the normal clear of photovoltaic module volt-ampere characteristic test work.

In order to realize the above object, the first aspect, the utility model provides a photovoltaic module test fixture, photovoltaic module have anodal lead-out wire and negative pole lead-out wire. Photovoltaic module test fixture is including bearing seat, conducting block and conducting rod, and two at least conducting blocks are used for the electricity to connect anodal lead-out wire and negative pole lead-out wire respectively, and the conducting block activity sets up in bearing the seat, and the conducting block has first electrically conductive connecting portion. One end of the conductive rod is provided with a second conductive connecting part which is used for being in contact conductive fit with the first conductive connecting part.

When adopting above-mentioned technical scheme, bear the seat and be used for providing the holding power for the conducting block. The conductive block has a first conductive connection portion. One end of the conducting rod is provided with a second conducting connecting part which is in contact conducting fit with the first conducting connecting part, and when the first conducting connecting part is in contact with the second conducting connecting part, the conducting block is electrically conducted with the conducting rod. The conducting block activity sets up in bearing the weight of the seat to the position of cooperation conducting rod avoids when having certain inclination or apart from the deviation between conducting rod and conducting block, appears conducting block and conducting rod bad contact's phenomenon, in order to avoid influencing the normal clear of test work.

In a possible implementation manner, the conductive block is movably connected to the bearing seat through the elastic member, and is used for adjusting the position of the conductive block relative to the conductive rod, so that the first conductive connecting portion and the second conductive connecting portion are in contact conductive fit.

When the technical scheme is adopted, the conductive block is movably connected to the bearing seat through the elastic piece, so that the conductive block can move on the bearing seat in a reciprocating mode, a certain inclination angle of the conductive block can be realized, the conductive block is in full contact with the conductive rod by matching the position of the conductive rod, the phenomenon of poor contact between the conductive block and the conductive rod is avoided, and the normal operation of testing work is influenced.

In a possible implementation manner, the conductive block is rotatably connected to the bearing seat through the rotating shaft and used for adjusting the angle of the conductive block relative to the conductive rod, so that the first conductive connecting part and the second conductive connecting part are in contact conductive fit.

When the technical scheme is adopted, the conductive block is rotationally connected to the bearing seat through the rotating shaft, so that the conductive block can incline for a certain angle relative to the bearing seat to be matched with the position of the conductive rod, and the conductive block is fully contacted with the conductive rod.

In one possible implementation manner, the first conductive connecting portion is a groove, and the second conductive connecting portion is a protrusion in contact fit with the groove.

In one possible implementation manner, the first conductive connecting portion is a protrusion, and the second conductive connecting portion is a groove in contact fit with the protrusion.

In one possible implementation, the opening of the groove tapers to the bottom.

When the technical scheme is adopted, the opening of the groove is gradually reduced to the bottom, and the groove is matched with the protrusion, so that the contact area of the conductive block and the conductive rod is increased, the conductive block is fully contacted with the conductive rod, and the electric conduction is realized. And, when the conducting rod moves relative to the conducting block and a certain inclination angle or distance deviation exists between the conducting rod and the conducting block, the top end of the protrusion can continue to move relative to the side wall of the groove, so that the groove smoothly receives the protrusion, the conducting block is ensured to be fully contacted with the conducting rod, and electric conduction is realized.

In addition, when the top end of the protrusion moves relatively along the side wall of the groove, it should be understood that a friction force is inevitably generated between the top end of the protrusion and the side wall of the groove, so that an oxide layer on the side wall of the groove can be eliminated, the existence of the oxide layer is prevented from increasing the resistivity, and the investment of human resources is saved.

In one possible implementation, the groove is a V-groove or a U-groove.

In a possible realization, the bottom of the groove is provided with an extension groove remote from the opening of the groove.

When adopting above-mentioned technical scheme, the extending groove that sets up is used for holding bellied top, not only can guarantee recess lateral wall and protruding lateral wall fully contact, increases the area of contact of conducting rod and conducting block, guarantees that the conducting rod is electrically conductive with the conducting block contact. And when the top end of the bulge is directly contacted with the bottom of the groove, the bulge is prevented from being damaged, and the service life of the photovoltaic module testing tool is prolonged.

In a possible realization, the orthographic projection of the extension slot opening on the largest cross section of the extension slot is located within the largest cross section.

When the technical scheme is adopted, the orthographic projection of the opening of the extension groove on the maximum section of the extension groove is positioned in the maximum section, so that the size of the opening of the extension groove is smaller than the size of the maximum section. After the photovoltaic module test fixture is used for a long time, because the groove side wall receives the raised frictional force, after the groove opening is gradually increased, the opening size of the extension groove is smaller than the maximum section size, and when the protrusion side wall is not contacted with the groove side wall, the raised top end is contacted with the bottom end of the extension groove, so that the phenomenon of poor contact between the conductive block and the conductive rod is easily caused, in addition, larger impact force is easily generated between the conductive block and the conductive rod, and the service life of the photovoltaic module test fixture is shortened.

In a second aspect, the present invention further provides a photovoltaic module testing system, which includes the photovoltaic module testing tool and the tester described in the first aspect or any possible implementation manner of the first aspect. The photovoltaic module testing tool is electrically connected with the photovoltaic module. The tester is electrically connected with the photovoltaic module testing tool and used for testing the volt-ampere characteristic of the photovoltaic module.

The beneficial effects of the photovoltaic module testing system provided by the second aspect are the same as those of the photovoltaic module testing tool described in the first aspect or any possible implementation manner of the first aspect, and are not described herein again.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic diagram of a position relationship between a conductive block and a carrier in the prior art;

fig. 2 is a schematic structural diagram of an embodiment provided by the present invention;

FIG. 3 is a schematic diagram of the connection between the conductive block and the carrying seat in FIG. 2;

FIG. 4 is a schematic diagram illustrating the position relationship between the conductive block and the conductive rod in FIG. 2;

FIG. 5 is a schematic structural diagram of the conductive block of FIG. 2;

FIG. 6 is a schematic view of the conductive rod of FIG. 2;

fig. 7 is a schematic view of a position connection relationship between a conductive block and a bearing seat according to another embodiment of the present invention;

FIG. 8 is a schematic diagram of the conductive block of FIG. 7;

fig. 9 is a schematic diagram of a conductive rod in contact conductive engagement with the conductive block of fig. 8.

Reference numerals:

1-carrier, 2-conductive block, 2' -conductive block

3-conducting rod, 4-elastic component, 5-pivot.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the prior art, the volt-ampere characteristic test of the photovoltaic module is in an automatic test mode, as shown in fig. 1, during the test, the conductive block 2' is tightly arranged on the photovoltaic module and electrically connected with the photovoltaic module, and the conductive rod is electrically connected with the tester. The conductive rod moves towards the direction close to the conductive block 2 'and contacts with the conductive block 2' to realize electric conduction.

Because the conducting block 2 ' is static state for photovoltaic module, when there is certain inclination or apart from the deviation between conducting rod and conducting block 2 ', easily cause conducting block 2 ' and conducting rod contact failure, influence the normal clear of test work.

Moreover, the conducting rod and the conducting block 2' are made of copper materials, and the surface of the conducting rod and the conducting block is easy to generate oxidation reaction with air during daily use to generate an oxidation layer, so that the resistivity of the photovoltaic module testing tool is increased, and the testing result of the photovoltaic module is influenced. Therefore, the conductive rod and the conductive block 2' need to be polished to remove the oxide layer and calibrate the resistivity of the testing tool. Human resources are wasted, and meanwhile, the test effect and the test progress are influenced.

In view of this, in order to solve the problem that exists among the above-mentioned prior art, the first aspect, as shown in fig. 2, the utility model provides a photovoltaic module test fixture, photovoltaic module have anodal lead-out wire and negative pole lead-out wire. Photovoltaic module test fixture is including bearing seat 1, conducting block 2 and conducting rod 3, and two at least conducting blocks 2 are used for the anodal lead-out wire and the negative pole lead-out wire of electricity connection photovoltaic module respectively, and the activity of conducting block 2 sets up in bearing seat 1, and conducting block 2 has first electrically conductive connecting portion. One end of the conducting rod 3 is provided with a second conducting connecting part which is used for being in contact conducting fit with the first conducting connecting part, and the conducting rod 3 is used for being electrically connected with the tester.

During specific implementation, the bearing seat 1 can be arranged on the photovoltaic module and also can be arranged outside the photovoltaic module and used for providing supporting force for the conductive block 2. Specifically, when the carrier 1 is disposed on the photovoltaic module, the carrier 1 can be tightly disposed on a frame of the photovoltaic module. The conductive block 2 is provided with a first conductive connecting part, one end of the conductive rod 3 is provided with a second conductive connecting part which is in contact conductive fit with the first conductive connecting part, and when the first conductive connecting part is in contact with the second conductive connecting part, the conductive block 2 and the conductive rod 3 are electrically conducted. The conducting block 2 is movably arranged on the bearing seat 1 to match with the position of the conducting rod 3, so that the phenomenon that the conducting block 2 and the conducting rod 3 are in poor contact when a certain inclination angle or distance deviation exists between the conducting rod 3 and the conducting block 2 is avoided, and the normal operation of testing work is not influenced. And one end of the conducting rod 3, which is far away from the second conducting connecting part, is electrically connected with the tester. The number of the conductive blocks 2 is at least two, the number of the corresponding conductive rods 3 is at least two, and the conductive rods 3 correspond to the conductive blocks 2 one to one. The two conductive blocks 2 are respectively and electrically connected with a positive electrode outgoing line and a negative electrode outgoing line of the photovoltaic module. Of course, the number of the conductive blocks 2 is set according to the actual situation, and is not particularly limited herein. In the embodiment provided by the present invention, the number of the conductive blocks 2 is four, and the number of the corresponding conductive rods 3 is four. Two of the conductive blocks 2 are electrically connected with a positive electrode outgoing line of the photovoltaic module, and the other two conductive blocks 2 are electrically connected with a negative electrode outgoing line of the photovoltaic module.

In one example, as shown in fig. 3, the conductive block 2 is movably connected to the carrier 1 through an elastic member 4, and is used for adjusting the position of the conductive block 2 relative to the conductive rod 3, so that the first conductive connecting portion and the second conductive connecting portion are in contact conductive fit. Conducting block 2 passes through 4 swing joint of elastic component in bearing seat 1, not only makes conducting block 2 can be at bearing seat 1 last reciprocating motion, can realize conducting block 2 certain angle of slope moreover to the position of cooperation conducting rod 3 makes conducting block 2 and conducting rod 3 fully contact, avoids appearing conducting block 2 and the phenomenon of conducting rod 3 contact failure, shadow test work normally goes on.

In specific implementation, as shown in fig. 3, the elastic member 4 may be a spring, one end of the spring is fastened to the conductive block 2, and the other end of the spring is fastened to the carrier 1, so that the conductive block 2 reciprocates along the width direction of the conductive block 2. In order to make the conductive block 2 under the drive of the elastic part 4, better realize reciprocating motion, it has the holding tank to open on bearing 1 upper portion of seat, and elastic part 4, conductive block 2 all hold in the holding tank, and the one end setting of elastic part 4 is on the lateral wall of holding tank. In addition, in order to prevent the conductive block 2 from being displaced during the movement, the number of the elastic members 4 may be set to at least two.

In another example, as shown in fig. 7, the conductive block 2 is rotatably connected to the carrier 1 through a rotating shaft 5, and is configured to adjust an angle of the conductive block 2 relative to the conductive rod 3, so that the conductive block 2 can be inclined by a certain angle relative to the carrier 1 to match a position of the conductive rod 3, so that the first conductive connecting portion is in full contact with the second conductive connecting portion, and the first conductive connecting portion is ensured to be in contact with the second conductive connecting portion for conduction. During specific implementation, the rotating shaft 5 penetrates through the conductive block 2 along the length direction of the conductive block 2, and two ends of the rotating shaft 5 are connected with the bearing seat 1. The rotating shaft 5 and the bearing seat 1 may be fixedly connected or rotatably connected, and is not limited in this respect. When the rotating shaft 5 is fixedly connected with the bearing seat 1, the conductive block 2 is rotatably connected with the rotating shaft 5, and when the rotating shaft 5 is rotatably connected with the bearing seat 1, the conductive block 2 and the rotating shaft 5 can be fixedly connected or can be rotatably connected, which is not specifically limited herein and is set according to the actual situation.

In some examples, referring to fig. 3, 4, 5, and 6, the first conductive connection is a groove, and an opening of the groove is tapered to a bottom. The second conductive connecting part is a protrusion in contact fit with the groove.

In other examples, referring to fig. 7, 8 and 9, the first conductive connection part is a protrusion, the second conductive connection part is a groove in contact fit with the protrusion, and an opening of the groove is gradually reduced to a bottom.

The opening of the groove is gradually reduced to the bottom, and as a possible implementation mode, the groove is a V-shaped groove or a U-shaped groove. The groove is matched with the protrusion, so that the contact area of the conductive block 2 and the conductive rod 3 is increased, the first conductive connecting part is fully contacted with the second conductive connecting part, and the conductive block 2 and the conductive rod 3 are electrically conducted. Moreover, when the conducting rod 3 moves relative to the conducting block 2 and a certain inclination angle or distance deviation exists between the conducting rod 3 and the conducting block 2, the top end of the protrusion can continue to move relative to the side wall of the groove, so that the groove smoothly receives the protrusion, the conducting block 2 is ensured to be fully contacted with the conducting rod 3, and electric conduction is realized.

In addition, when the top of the protrusion moves relatively along the sidewall of the groove, it should be understood that a friction force is inevitably generated between the top of the protrusion and the sidewall of the groove, so that the oxide layer on the sidewall of the groove can be eliminated, and the existence of the oxide layer can prevent the resistivity from being increased. The times of removing the oxide layer by manpower are reduced, and the manpower resource investment is saved.

The utility model provides an in the embodiment, the preferred V type recess of recess, and the contained angle scope between the both sides wall of V type recess is 30 ~ 60, and corresponding arch sets up to the same structure size with V type recess to make first electrically conductive connecting portion and the electrically conductive cooperation of second electrically conductive connecting portion contact, guarantee conducting block 2 and the stability of conducting rod 3 circular telegram.

It should be noted that, because the number of the conductive blocks 2 is at least two, and the conductive rods 3 are the same as and correspond to the conductive blocks 2 one to one, in specific application, the first connecting portions of the conductive blocks 2 may have the same structure or different structures. Similarly, the connection mode of the conductive block 2 and the bearing seat 1 may be the same or different. For example, when the number of the conductive blocks 2 is four, the first connecting portions of the four conductive blocks 2 may be grooves or protrusions, or the first connecting portions of one, two, or three conductive blocks 2 may be grooves, and the first connecting portions of the other conductive blocks 2 may be protrusions, and of course, the second conductive connecting portions of the conductive rod 3 are correspondingly disposed. In a similar way, the four conductive blocks 2 and the bearing seat 1 can be connected by the elastic members 4, or by the rotating shaft 5, or by one, two or three of them by the elastic members 4, and the other conductive blocks 2 are rotatably connected by the rotating shaft 5 and the bearing seat 1. The specific setting is set according to the actual situation, and is not particularly limited here.

As a possible realization, see fig. 3, 4 and 9, the bottom of the groove is provided with an extension groove away from the opening of the groove. The extending groove that sets up is used for holding bellied top, not only can guarantee recess lateral wall and protruding lateral wall fully contact, increases conducting rod 3 and conducting block 2's area of contact, guarantees that conducting rod 3 and conducting block 2 contact are electrically conductive. And when the top end of the bulge is directly contacted with the bottom of the groove, the bulge is prevented from being damaged, and the service life of the photovoltaic module testing tool is prolonged.

In a possible realization, the orthographic projection of the extension slot opening on the largest cross section of the extension slot is located within the largest cross section. It is thus shown that the extension slot opening dimension is smaller than the maximum cross-sectional dimension. After the photovoltaic module test fixture is used for a long time, because the groove side wall receives the raised frictional force, after the groove opening is gradually increased, the opening size of the extension groove is smaller than the maximum section size, when the protrusion side wall is prevented from being not contacted with the groove side wall, the raised top end is contacted with the bottom end of the extension groove, the phenomenon of poor contact between the conductive block 2 and the conductive rod 3 is easily caused, in addition, a larger impact force is easily generated between the conductive block 2 and the conductive rod 3, and the service life of the photovoltaic module test fixture is shortened.

In a second aspect, the present invention further provides a photovoltaic module testing system, which includes the photovoltaic module testing tool and the tester described in the first aspect or any possible implementation manner of the first aspect. The conductive block 2 of the photovoltaic module test tool is electrically connected with the photovoltaic module. The tester is connected with the conducting rod 3 electricity that photovoltaic module test fixture has to realize tester and photovoltaic module's electric conduction, so that tester test photovoltaic module's volt-ampere characteristic.

The beneficial effects of the photovoltaic module testing system provided by the second aspect are the same as those of the photovoltaic module testing tool described in the first aspect or any possible implementation manner of the first aspect, and are not described herein again.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The photovoltaic module test tool is characterized in that the photovoltaic module is provided with a positive electrode outgoing line and a negative electrode outgoing line; photovoltaic module test fixture includes:

a bearing seat;

the conductive blocks are respectively used for electrically connecting the anode leading-out wire and the cathode leading-out wire, are movably arranged on the bearing seat and are provided with first conductive connecting parts;

and one end of the conductive rod is provided with a second conductive connecting part which is in contact conductive fit with the first conductive connecting part.

2. The photovoltaic module testing tool according to claim 1, wherein the conductive block is movably connected to the carrying seat through an elastic member and used for adjusting the position of the conductive block relative to the conductive rod, so that the first conductive connecting portion is in contact conductive fit with the second conductive connecting portion.

3. The photovoltaic module testing tool according to claim 1, wherein the conductive block is rotatably connected to the carrying seat through a rotating shaft and used for adjusting an angle of the conductive block relative to the conductive rod, so that the first conductive connecting portion is in contact conductive fit with the second conductive connecting portion.

4. The photovoltaic module test tool according to claim 1, wherein the first conductive connecting portion is a groove, and the second conductive connecting portion is a protrusion in contact fit with the groove.

5. The photovoltaic module test tool according to claim 1, wherein the first conductive connecting portion is a protrusion, and the second conductive connecting portion is a groove in contact fit with the protrusion.

6. The photovoltaic module testing tool according to claim 4 or 5, wherein the opening of the groove is gradually reduced from the bottom to the opening of the groove.

7. The photovoltaic module test tool of claim 6, wherein the groove is a V-shaped groove or a U-shaped groove.

8. The photovoltaic module testing tool according to claim 6, wherein the bottom of the groove is provided with an extension groove far away from the opening of the groove.

9. The photovoltaic module test tool of claim 8, wherein an orthographic projection of the opening of the extension groove on a maximum cross section of the extension groove is located within the maximum cross section.

10. A photovoltaic module testing system, comprising:

the photovoltaic module testing tool according to any one of claims 1 to 9, electrically connected with the photovoltaic module;

and the tester is electrically connected with the photovoltaic module testing tool and used for testing the volt-ampere characteristic of the photovoltaic module.

Images