CN214174573U - Battery piece electrical property method test platform that draws wire - Google Patents
Battery piece electrical property method test platform that draws wire Download PDFInfo
- Publication number
- CN214174573U CN214174573U CN202023115078.8U CN202023115078U CN214174573U CN 214174573 U CN214174573 U CN 214174573U CN 202023115078 U CN202023115078 U CN 202023115078U CN 214174573 U CN214174573 U CN 214174573U
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- Prior art keywords
- test
- wire
- metal wire
- battery piece
- platform
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- Expired - Fee Related
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- 238000012360 testing method Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 88
- 229910052751 metal Inorganic materials 0.000 claims abstract description 88
- 239000000523 sample Substances 0.000 claims abstract description 13
- 238000005491 wire drawing Methods 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 239000011241 protective layer Substances 0.000 claims description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims 2
- 239000010949 copper Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 5
- 238000007747 plating Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Abstract
The utility model belongs to solar cell electrical property test field, concretely relates to battery piece electrical property method test platform that draws wire, including the testboard, remove frame and test circuit. The test board is provided with a probe row which is used for abutting against one surface of a battery piece to be tested; the movable frame is movably connected with the test board and comprises a frame and a plurality of metal wires; the two ends of the metal wire are connected to the frame, the metal wires are arranged in parallel and evenly at intervals, and the distance between the middle part of the metal wire and the test board is smaller than the distance between the two ends of the metal wire and the test board; and the test circuit is electrically connected with the probe row and the metal wire. The utility model discloses a battery piece electrical property stay wire method test platform, the area of contact through the metal wire increase that the diameter changes and surveyed the battery piece, the contact effect is good, can collect electric current, the voltage signal of vice bars in the battery piece, and test repeatability is good, and testing error is little.
Description
Technical Field
The utility model relates to a solar cell electrical property test technical field especially relates to a battery piece electrical property method test platform that draws wire.
Background
In addition to conventional front-side main grid-equipped cells, many novel main grid-free crystalline silicon cells are also available in the market, and the cells are in ohmic contact with the cells through fine grid lines arranged in a lattice manner. The crystalline silicon battery pieces reduce the light absorption loss of the battery pieces caused by the fact that the main grids cover the light source, reduce the series resistance loss and reduce the dark saturation current and open-circuit voltage loss of the battery pieces through the design without the main grids, thereby improving the efficiency of the battery pieces. When the existing crystal silicon solar cell without the main grid is tested for IV (electrical performance), a wire drawing method can be adopted for testing, and each auxiliary grid line of the tested cell is contacted with a plurality of metal wires; however, because the length and the diameter of the test metal wire are long, the whole metal wire is stressed unevenly when the movable frame is pressed down, the metal wire is easy to bend, the middle area of the metal wire protrudes upwards and is far away from the battery piece to be tested, so that the contact area between the metal wire and the battery piece to be tested is small, the contact effect is poor, and the metal wire is difficult to collect current and voltage signals in the middle area of the battery piece to be tested; when the same metal wire is contacted with a plurality of auxiliary grids, the contact at each position on the metal wire is different, so that the test repeatability is poor, and the test error is large.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery piece electrical property method test platform that draws wire, the area of contact of metal wire and battery piece is big, and the contact is effectual, can collect electric current, the voltage signal of battery piece middle zone, and test repeatability is good, and testing error is little.
To achieve the purpose, the utility model adopts the following technical proposal:
a test platform for electrical performance of a battery piece by a wire drawing method comprises:
the test bed is provided with a probe row which is used for abutting against one surface of a battery piece to be tested;
the movable frame is movably connected with the test board and comprises a frame and a plurality of metal wires; the two ends of the metal wire are connected to the frame, the metal wires are arranged in parallel and evenly at intervals, and the distance between the middle of the metal wire and the test bench is smaller than the distance between the two ends of the metal wire and the test bench; and
and the probe row and the metal wire are electrically connected with the test circuit.
As a preferred structure of the utility model, the metal wire is in the projected width equals along length direction on the testboard.
As a preferred structure of the utility model, the metal wire with distance between the testboard is followed the length direction of metal wire is crescent to both ends by the centre.
As an optimized structure of the utility model, the metal wire includes a plurality of line segments, every the line segment with distance between the testboard equals, the metal wire with distance between the testboard is followed the length direction of metal wire is increased to both ends section by the centre.
As an optimal structure of the present invention, the metal wire includes a copper wire and a covering layer for covering the copper wire.
As an optimized structure of the utility model, the copper wire has set gradually at least two-layer protective layer, two-layer the protective layer is made by nickel or gold.
As an optimal structure of the utility model, the metal wire adopts drawing process forming.
As a preferred structure of the utility model, still include the direction subassembly, the direction subassembly is configured to the guide remove the frame and remove along being close to the direction of testboard.
As a preferred structure of the utility model, the direction subassembly includes:
the guide seat is arranged on the test board; and
and the sliding column is arranged on the movable frame and is connected with the guide seat in a sliding manner.
As the utility model discloses a preferred structure, a serial communication port, its characterized in that still includes the test light source, the test light source set up in remove deviating from of frame one side of being surveyed the battery piece.
The utility model has the advantages that: the utility model provides a battery piece electrical property stay wire method test platform, remove the metal wire that sets up on the frame, distance between its middle part and the testboard is less than the both ends of metal wire and the distance between the testboard, when removing the frame and drive the metal wire and be close to and the butt is surveyed the metal sheet, the middle zone arch that makes progress appears in the metal wire bending, the metal wire can increase the area of contact with being surveyed the battery piece apart from the little interlude of workstation distance, more vice bars on the contact is surveyed the battery piece, the contact is effectual, can collect the regional electric current in the middle of the battery piece, voltage signal, the test repeatability is good, the test error is little.
Drawings
Fig. 1 is a schematic structural diagram of a platform for testing electrical properties of a battery plate according to a pull-wire method provided by an embodiment of the present invention;
fig. 2 is a front view of a metal wire according to a first embodiment of the present invention;
fig. 3 is a top view of a metal wire according to an embodiment of the present invention;
fig. 4 is a front view of a metal wire according to a second embodiment of the present invention.
In the figure:
1. a test bench;
2. a movable frame; 21. a frame; 22. a metal wire; 221. a variable diameter cambered surface; 222. a step arc surface;
3. a guide assembly; 31. a guide seat;
100. and (5) testing the battery piece.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; 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 in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and 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. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
As shown in fig. 1-3, the embodiment of the utility model provides a battery piece electrical property test platform by wire drawing method, including testboard 1, removal frame 2 and test circuit. The test table 1 is provided with a probe bank, the battery sheet 100 to be tested is placed on the test table 1, and the probe bank (not shown) is used for abutting against one surface of the battery sheet 100 to be tested. The movable frame 2 is movably connected with the test board 1, and the movable frame 2 comprises a frame 21 and a plurality of metal wires 22; two ends of the metal wire 22 are detachably connected to the frame 21, and the plurality of metal wires 22 are arranged in parallel and at uniform intervals; the distance between the middle of the wire 22 and the test stand 1 is smaller than the distance between the two ends of the wire 22 and the test stand 1. In the present embodiment, the distance between the metal wire 22 and the test stand 1 gradually increases from the middle to both ends along the length direction of the metal wire 22; the wires 22 are adapted to abut the other side of the battery sheet 100 being tested that is remote from the row of probes. As shown in fig. 2, the diameter of the metal wire 22 changes gradually, i.e. has a variable arc surface 221, and the variable arc surface 221 abuts against the battery piece 100 to be tested. The probe row and the metal wire 22 are both electrically connected with the test circuit, and the probe row and the metal wire 22 are respectively connected with the anode and the cathode of the battery piece 100 to be tested. During testing, the metal wire 22 abuts against the plurality of auxiliary grids of the tested battery piece 100, a testing loop is formed among the probe row, the metal wire 22 and the tested battery piece 100, and voltage and current measurement of the tested battery piece 100 is completed. When moving frame 2 and pushing down, metal wire 22 is crooked, and the middle zone is protruding appears, and the middle section that metal wire 22 and testboard 1 distance are little can compensate bellied region, increase with the area of contact of being surveyed battery piece 100, and contact effect is good, can collect battery piece middle zone's electric current, voltage signal, contacts more vice bars on being surveyed battery piece 100 for test repeatability is good, and testing error is little. The plurality of wires 22 is parallel to the test bench 1. Preferably, the middle axis of the wire 22 is parallel to the test stand 1, and can better abut against the battery piece 100 to be tested.
Further, the width of the metal wire 22 projected on the test table 1 is equal along the length direction, that is, the metal wire 22 is a straight line with equal width, and the width of the metal wire 22 is equal to the diameter of the end face. As shown in fig. 3, which is a top view of the metal wire 22, the metal wire 22 has the same width in the length direction, and the width is equal to the end surface diameter of the metal wire 22. When testing, the metal wires 22 with the same width can reduce the coverage area of the main grid or the auxiliary grid, reduce the blockage of the metal wires 22 to a testing light source, reduce testing errors and improve testing precision.
Further, the metal wire 22 includes a copper wire and a protective layer covering the copper wire, the copper wire is sequentially provided with at least two protective layers, and the two protective layers are made of nickel or gold. The copper wire can be processed by adopting a drawing method and is matched with a die for processing. The drawing processing technology and the equipment thereof are the prior art and are not described in detail herein. The copper wire has good conductivity, high strength and good fatigue resistance; by performing the nickel plating or gold plating process on the outer layer of the copper wire, the nickel plating and gold plating process can be performed from the inner layer in sequence, so that the metal wire 22 has strong corrosion resistance, and is prevented from rusting and affecting the test precision.
Further, the electric performance wire-drawing method test platform for the battery piece further comprises a guide assembly 3, wherein the guide assembly 3 is arranged on the test bench 1, and the guide assembly 3 is configured to guide the movement of the moving frame 2. The guide assembly 3 includes a guide seat 31, a strut, and a stopper (not shown). The guide seat 31 is arranged on the test board 1, the sliding column is arranged on the movable frame 2, and the sliding column is connected with the guide seat 31 in a sliding manner; the sliding of the sliding column can drive the movable frame 2 to move up and down. Preferably, the movement of the sliding column is driven by a drive. The driving member may be a motor, a cylinder, or other driving means, and is a common driving device in the field, and will not be described herein. The limiting block is arranged in the guide seat 31, and the sliding column can abut against the limiting block; when the sliding column is abutted to the limiting block, the moving frame 2 stops moving, and the phenomenon that the metal wire 22 is pressed and bent too much due to too much downward sliding of the moving frame 2 is avoided.
Further, the test platform for the electrical performance of the battery piece by the wire drawing method further comprises a test light source (not shown in the figure), and the test light source is arranged on the upper side of the movable frame 2, which is away from the battery piece 100 to be tested. During testing, the test light source is used for providing illumination for the tested battery piece 100, and the test light source is arranged on the upper side of the movable frame 2, so that light absorption of the tested battery piece 100 is facilitated.
Example two
In this embodiment, the battery piece electrical performance pull wire method test platform has the same test bench 1, the movable frame 2, the test circuit and the test light source as the first embodiment, two ends of the metal wire 22 are detachably connected to the frame 21, and the plurality of metal wires 22 are parallel and uniformly arranged at intervals. The difference between the present embodiment and the first embodiment is that the metal wire 22 includes a plurality of line segments, each line segment has the same distance to the testing platform 1, and the distance between the metal wire 22 and the testing platform 1 decreases from the middle to the two ends along the length direction of the metal wire 22. As shown in fig. 4, the metal line 22 has a step arc 222, that is, the metal line 22 has a step line segment. Preferably, the height of the step is gradually decreased from the middle of the metal line 22 toward both ends in the length direction. When moving frame 2 and pushing down, the middle zone arch appears in the metal wire 22 bending, and the ladder cambered surface 222 in the middle of the metal wire 22 can increase with the area of contact of being surveyed battery piece 100, contacts more vice bars on being surveyed battery piece 100, and the contact is effectual, can collect electric current, the voltage signal of battery piece middle zone for test repeatability is good, and the test error is little. The wire 22 may be machined by cutting.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A test platform for electrical performance of a battery piece by a wire drawing method is characterized by comprising:
the test bed (1), the test bed (1) is provided with a probe row, and the probe row is used for abutting against one surface of a battery piece to be tested (100);
the movable rack (2) is movably connected with the test bench (1), and the movable rack (2) comprises a frame (21) and a plurality of metal wires (22); the two ends of the metal wire (22) are connected to the frame (21), the metal wires (22) are arranged in parallel and evenly at intervals, and the distance between the middle part of the metal wire (22) and the test bench (1) is smaller than the distance between the two ends of the metal wire (22) and the test bench (1); and
a test circuit, the probe bank and the metal lines (22) being electrically connected to the test circuit.
2. The platform for testing the electrical performance of the battery plate by the wire drawing method according to claim 1, wherein the width of the projection of the metal wire (22) on the test platform (1) is equal along the length direction.
3. The platform for testing the electrical performance of the battery piece by the wire drawing method according to claim 1, wherein the distance between the metal wire (22) and the test bench (1) is gradually increased from the middle to two ends along the length direction of the metal wire (22).
4. The platform for testing the electrical performance of the battery piece by the wire drawing method according to claim 1, wherein the metal wire (22) comprises a plurality of wire segments, the distance between each wire segment and the test bench (1) is equal, and the distance between the metal wire (22) and the test bench (1) increases from middle to two ends along the length direction of the metal wire (22) in a section-by-section mode.
5. The battery piece electrical performance wire drawing test platform of claim 1, wherein the metal wires (22) comprise copper wires and a protective layer covering the copper wires.
6. The platform for testing the electrical performance of the battery piece according to claim 5, wherein the copper wire is sequentially provided with at least two protective layers, and the two protective layers are made of nickel or gold.
7. The electrical performance wire drawing test platform of the battery piece according to claim 1, wherein the metal wires (22) are formed by a drawing process.
8. The platform for testing the electrical performance of the battery plate by the wire drawing method according to claim 1, further comprising a guide assembly (3), wherein the guide assembly (3) is configured to guide the moving frame (2) to move in a direction close to the test platform (1).
9. The electrical performance wire drawing test platform of the battery plate as claimed in claim 8, wherein the guide assembly (3) comprises:
the guide seat (31), the said guide seat (31) is set up on the said test bed (1); and
the sliding column is arranged on the moving frame (2) and is connected with the guide seat (31) in a sliding mode.
10. The platform for testing the electrical performance of the battery plate according to any one of claims 1 to 9, further comprising a test light source, wherein the test light source is arranged on one side of the movable frame (2) which faces away from the battery plate (100) to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023115078.8U CN214174573U (en) | 2020-12-22 | 2020-12-22 | Battery piece electrical property method test platform that draws wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023115078.8U CN214174573U (en) | 2020-12-22 | 2020-12-22 | Battery piece electrical property method test platform that draws wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214174573U true CN214174573U (en) | 2021-09-10 |
Family
ID=77608132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023115078.8U Expired - Fee Related CN214174573U (en) | 2020-12-22 | 2020-12-22 | Battery piece electrical property method test platform that draws wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214174573U (en) |
-
2020
- 2020-12-22 CN CN202023115078.8U patent/CN214174573U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210910 |