Solar test fixture

Abstract

The utility model relates to the field of solar cell testing, in particular to a solar test fixture. Comprising an upper clamp and a lower clamp, the upper clamp comprises a light-transmitting supporting layer, a light-transmitting buffer layer and a test wire which are sequentially arranged from top to bottom, the lower clamp comprises at least one test piece, a support and a base which are sequentially arranged from top to bottom, the test piece is installed on the support, and the support is movably connected with the base. According to the structure, when flexible detection is carried out on different grid line solar cells, the influence that subsequent cells cannot be tested due to cell fragments of the lower clamp is avoided, and the cell fragments can fall into the accommodating space; secondly, various current and voltage output circuit designs can be completed through different arrangement designs of the test wires and the conductive metal strips, and Isc, Voc and FF can be more accurately tested through the various circuit designs.

Description

Technical Field

[0001] The utility model relates to the field of solar cell testing, in particular to a solar energy testing fixture. Background Art

[0002] Before solar cells are used to make components, their conversion efficiency and power generation must be tested and sorted. Only by concentrating as many identical cells as possible in the same component can the manufactured component have the best performance, minimize internal heat generation and minimize power during operation. Therefore, it is a key step to accurately test the electrical performance of solar cells after they are manufactured and complete the sorting. Patent No. CN115629224A, Patent Name A Solar Cell Test Fixture discloses a fixture structure for testing solar cells. Since the test wires are attached to the upper and lower test fixtures, but since the surface of the lower fixture is a flexible material, once fragments occur, the battery fragments can easily penetrate into the flexible material of the lower fixture, and the fragments cannot be cleaned, and the fixture will be in an unusable state. Utility Model Content

[0003] In view of the problems mentioned in the prior art, the utility model proposes a solar energy testing fixture to solve the problems in the background technology.

[0004] The utility model discloses a solar energy test fixture, comprising an upper fixture and a lower fixture, wherein the upper fixture comprises a light-transmitting support layer, a light-transmitting buffer layer and a test wire which are sequentially arranged from top to bottom, and the lower fixture comprises at least one test piece, a bracket and a base which are sequentially arranged from top to bottom, wherein the test piece is mounted on the bracket, and the bracket is movably connected to the base.

[0005] Preferably, a receiving space is provided in the middle of the base, and sliding grooves are symmetrically provided at both ends of the receiving space.

[0006] Preferably, the test piece is covered in the accommodating space.

[0007] Preferably, the bracket is installed in the slide slot, wherein the bracket is movable in the slide slot.

[0008] Preferably, the device further comprises a locking member disposed on the bracket, wherein the locking member is used to fix the bracket.

[0009] Preferably, the test pieces include a plurality of test pieces, and the plurality of test pieces are arranged parallel to each other.

[0010] Preferably, the test piece may be a conductive metal strip or a probe row.

[0011] Compared with the prior art, the utility model has achieved the following technical effects:

[0012] This structure can flexibly detect solar cells with different grid lines while avoiding the impact of subsequent battery testing caused by battery fragments in the lower fixture. The battery fragments can fall into the set accommodation space; secondly, through different arrangement designs of test wires and conductive metal strips, circuit designs for multiple current and voltage outputs can be completed. Multiple circuit designs can more accurately test Isc, Voc and FF. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the lower clamp structure of the utility model;

[0015] Figure 3 This is a top view of the lower clamp structure of the utility model;

[0016] Figure 4 It is the left view of the lower clamp structure of the utility model.

[0017] Reference numerals: 1. light-transmitting support layer; 2. light-transmitting buffer layer; 3. test lead; 4. solar cell to be tested; 5. test piece; 6. bracket; 7. base. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Example

[0019] The utility model discloses a solar energy test fixture, such as Figure 1 As shown, it includes an upper clamp and a lower clamp, the upper clamp includes a light-transmitting support layer, a light-transmitting buffer layer and a test wire arranged in sequence from top to bottom, the lower clamp includes at least one test piece, a bracket and a base arranged in sequence from top to bottom, the test piece is installed on the bracket, and the bracket is movably connected to the base. A accommodating space is provided in the middle of the base, and slide grooves are symmetrically provided at both ends of the accommodating space. The test piece is covered in the accommodating space. The bracket is installed in the slide groove, wherein the bracket can move in the slide groove. It also includes a locking piece arranged on the bracket, and the locking piece is used to fix the bracket. The test piece includes a plurality of test pieces, and the plurality of test pieces are arranged parallel to each other. The test piece can be a conductive metal strip or a probe row.

[0020] In this embodiment, the light-transmitting support layer of the upper fixture structure is preferably made of quartz glass, and the thickness is preferably 15mm. Within this thickness range, it can provide a stable support layer for the test wire, and at the same time, it does not affect the test light source emitted by the solar simulator located on the upper part of the transparent support layer. The light-transmitting buffer layer is preferably made of liquid silicone material, and according to the actual situation, it includes but is not limited to PVC, PC, PET and other highly light-transmitting flexible materials in specific use. The thickness is preferably 2-10mm, and the elastic deformation produced by it provides a certain buffering effect when testing solar cells, and at the same time, the test wire and the test device of the lower fixture can be effectively contacted; the test wire is preferably made of copper wire, and using copper wire as the material of the test wire of this device can effectively reduce the production cost; at the same time, according to the actual situation, silver-plated copper wire, gold-plated copper wire, tin-plated copper wire or nickel-plated copper wire can be selected in specific use.

[0021] In this embodiment, the test piece in the lower fixture is preferably a conductive metal strip, or a probe row structure, and the conductive metal strip can be a copper strip, or a silver-plated copper strip, or a silver-plated copper strip; Figure 2 As shown, in this structure, a storage space is provided in the middle of the base, and the storage space can ensure that solar cell fragments fall into the storage space, thereby not affecting subsequent battery testing. The test piece is fixed to the bracket by screws, and is slidably installed on the slide groove of the base through the bracket. The provided locking piece includes bolts and nuts, and the bracket can be moved by adjusting the bolts and nuts to adjust the position. When locking, the bolt is rotated so that the inner end of the bolt conflicts with the bottom of the slide groove to lock it.

[0022] When conducting a solar cell test, the solar cell test fixture of the present invention is installed on an existing solar cell test device, the upper fixture and the lower fixture are respectively connected to the solar cell test device, and the test wire and the test piece are connected to the parameter acquisition device or module of the solar cell test device.

[0023] When the test starts, the solar cell to be tested is clamped by the upper clamp and the lower clamp, so that the test wire is in full contact with the upper surface of the solar cell to be tested, and the test piece is in full contact with the lower surface of the solar cell to be tested; the light emitted by the solar simulator is successively irradiated onto the solar cell to be tested after the upper clamp, so that the solar cell to be tested generates current, and the test piece is used to contact the solar cell to be tested to collect current and voltage signals, thereby realizing the test of the solar cell to be tested. During the test, once the solar cell to be tested is broken, the generated fragments of the test piece can fall into the accommodating space, thereby realizing the centralized collection of the fragments, facilitating the subsequent removal of the fragments and cleaning, thereby not affecting subsequent tests.

Claims

1. A solar test fixture, comprising an upper fixture and a lower fixture, wherein the upper fixture comprises a light-transmitting support layer, a light-transmitting buffer layer and a test wire arranged in sequence from top to bottom, characterized in that: The lower fixture comprises at least one test piece, a bracket and a base which are arranged in sequence from top to bottom. The test piece is mounted on the bracket, and the bracket is movably connected to the base.

2. A solar test fixture according to claim 1, characterized in that: A receiving space is provided in the middle of the base, and sliding grooves are symmetrically provided at both ends of the receiving space.

3. A solar energy test fixture according to claim 2, characterized in that: The test piece is covered in the accommodating space.

4. A solar test fixture according to claim 3, characterized in that: The bracket is installed in the slide slot, wherein the bracket can move in the slide slot.

5. A solar energy test fixture according to claim 4, characterized in that: It also includes a locking piece arranged on the bracket, and the locking piece is used to fix the bracket.

6. A solar energy test fixture according to claim 5, characterized in that: The test pieces include a plurality of test pieces, and the plurality of test pieces are arranged parallel to each other.

7. A solar energy test fixture according to claim 6, characterized in that: The test piece is a conductive metal strip or a probe row.

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