CN220693109U - Battery piece test board structure - Google Patents
Battery piece test board structure Download PDFInfo
- Publication number
- CN220693109U CN220693109U CN202322426408.2U CN202322426408U CN220693109U CN 220693109 U CN220693109 U CN 220693109U CN 202322426408 U CN202322426408 U CN 202322426408U CN 220693109 U CN220693109 U CN 220693109U
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- plate
- insulating substrate
- conductive plate
- conductive
- conducting plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 239000000758 substrate Substances 0.000 claims abstract description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 239000000523 sample Substances 0.000 description 12
- 238000003384 imaging method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- Secondary Cells (AREA)
Abstract
The utility model discloses a battery piece test board structure which comprises an insulating substrate, a first conductive board and a second conductive board, wherein the first conductive board and the second conductive board are arranged at intervals, the insulating substrate is arranged between the first conductive board and the second conductive board, the first conductive board, the second conductive board and the insulating substrate are pressed together, the lower end face of the first conductive board and the lower end face of the second conductive board are flush and slightly exceed the lower end face of the insulating substrate downwards to form a contact part contacted with the surface of a battery piece, the first conductive board is electrically connected with a current source to form a current test unit, and the second conductive board is electrically connected with a voltage source to form a voltage test unit. In the testing process, the current and the voltage are collected separately, so that the testing is more accurate.
Description
Technical Field
The utility model relates to the technical field of solar cell measurement, in particular to a cell test plate structure.
Background
In a photovoltaic industry battery piece IV (current voltage) testing machine and an EL (electroluminescence) testing machine, a probe row is required to be used as a testing board, in normal use, an upper probe row and a lower probe row form a pair, and then I V and EL testing is carried out on the probe rows according to the pattern placement number of the battery pieces. At present, a conventional probe row is formed by covering copper on an insulating substrate, then respectively connecting copper foils on the insulating substrate with probes for measuring multiple voltages and currents through welding, and then forming a complete probe row through welding connection of a bonding pad on a PCB and two wires. With the continuous improvement of the photovoltaic cell technology, whether main grid cells appear gradually appears in the market, and when a conventional probe row is used for testing, because gaps exist among probes, the situation that all probes can be pressed to a thin grid line cannot be guaranteed, so that the EL imaging in the testing process has the problem of alternate brightness and darkness.
In the CN 219087093U patent, the bottom of the test board is an integral body, and the collected current and voltage are not distinguished, and since the line resistance is respectively introduced into the test board during the voltage and current measurement, the FF (fill factor) is reduced by 1% during the IV test, thereby affecting the detection accuracy.
Disclosure of Invention
In view of the above, the present utility model provides a battery test board structure.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a battery piece test plate structure, includes insulating substrate, still includes first conducting plate and second conducting plate, first conducting plate and second conducting plate interval set up, insulating substrate sets up first conducting plate with between the second conducting plate, first conducting plate, second conducting plate and insulating substrate pressfitting are in the same place, the lower terminal surface of first conducting plate with the lower terminal surface of second conducting plate flushes and slightly surpasss downwards insulating substrate's lower terminal surface is in order to form the contact with battery piece surface contact, first conducting plate is connected with the electric current source electricity and is formed the electric current test unit, second conducting plate and voltage source electricity are connected and are formed the voltage test unit.
As a further scheme of the utility model: and the contact parts of the first conductive plate and the second conductive plate are plated with gold on the surfaces.
As a further scheme of the utility model: the first conductive plate and the second conductive plate are copper plates.
As a further scheme of the utility model: the first conductive plate and the second conductive plate are respectively provided with a bonding pad at a position close to any end of the insulating substrate.
As a further scheme of the utility model: the insulating substrate is glass fiber.
As a further scheme of the utility model: the thickness of the first conductive plate is greater than the thickness of the second conductive plate.
As a further scheme of the utility model: the thickness of the first conductive plate is 1.6mm-2.0mm, and the thickness of the second conductive plate is 0.8mm-1.2mm
As a further scheme of the utility model: the thickness of the insulating substrate is 3mm-2mm.
The utility model has the beneficial effects that: when the test device is used, the whole strip-shaped battery piece contact part is pressed on the battery piece without the main grid, and as the whole battery piece contact part is respectively covered by the first conductive plate and the second conductive plate without a gap problem, the first conductive plate and the second conductive plate can be pressed on each thin grid line of the battery piece without the main grid, and therefore, the EL imaging in the test process has no problem of light and shade alternation. And because there are not probes and needle sleeves, have reduced the height of the test board while testing, have reduced the shielding of the simulated sunlight, the test effect is better, the manufacturing cost is reduced by a wide margin. And in the testing process, the current and the voltage are collected separately, so that the testing is more accurate.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a structure of a battery test board according to the present utility model;
FIG. 2 is a schematic view of a battery test plate structure according to another embodiment of the present utility model;
fig. 3 is a bottom view of the structure of the battery test plate according to the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, 2 and 3, the present utility model is a battery testing board structure, which includes an insulating substrate 10, a first conductive board 20 and a second conductive board 30. The first conductive plate 20 is spaced apart from the second conductive plate 30. The insulating substrate 10 is disposed between the first conductive plate 20 and the second conductive plate 30, and the first conductive plate 20, the second conductive plate 30, and the insulating substrate 10 are pressed together.
In this embodiment, the insulating substrate 10 is a glass fiber insulating substrate, and of course, other insulating plates may be used. The thickness of the insulating substrate 10 is 3mm-2mm.
Wherein the lower end surface of the first conductive plate 20 and the lower end surface of the second conductive plate 30 are flush and slightly protrude downward beyond the lower end surface of the insulating base 10 to form the contact portion 11 contacting the surface of the battery cell.
The first conductive plate 20 is electrically connected with a current source to form a current test unit. In this embodiment, a pad 12 is provided on the first conductive plate 20 at a position near the end of either end of the insulating substrate 10, the pad 12 being used for connecting a current test wire.
The second conductive plate 30 is electrically connected with a voltage source to form a voltage test unit. In the present embodiment, a pad 12 is provided on the second conductive plate 30 at a position near the end of either end of the insulating substrate 10, the pad 12 being used for connecting a voltage test wire.
In this embodiment, the first conductive plate 20 and the second conductive plate 30 are copper plates. The thickness of the first conductive plate 20 is greater than the thickness of the second conductive plate 30. Wherein the thickness of the first conductive plate 20 is 1.6mm-2.0mm. The thickness of the second conductive plate 30 is 0.8mm-1.2mm. This is because the current measurement is more sensitive to resistance and requires as little resistance as possible. Meanwhile, in order to have more excellent electrical contact performance and oxidation resistance, the contact portions 11 of the first and second conductive plates 20 and 30 are both surface-plated with gold. Since the first conductive plate 20 is not communicated with the second conductive plate 30, current and voltage signals are transmitted through different lines respectively, so that mutual interference is avoided. By adopting the structure, the test board in the embodiment is pressed on the battery piece without the main grid by using the whole strip-shaped battery piece contact part during test, and the first conductive plate and the second conductive plate can be pressed on each thin grid line of the battery piece without the main grid due to the fact that the whole battery piece contact part is respectively covered by the first conductive plate and the second conductive plate without a gap problem, so that the EL imaging in the test process has no problem of light and shade alternation. And because there are not probes and needle sleeves, have reduced the height of the test board while testing, have reduced the shielding of the simulated sunlight, the test effect is better, the manufacturing cost is reduced by a wide margin. And in the testing process, the current and the voltage are collected separately, so that the testing is more accurate.
The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (8)
1. The utility model provides a battery piece test plate structure, includes insulating substrate, its characterized in that: still include first conducting plate and second conducting plate, first conducting plate and second conducting plate interval set up, insulating substrate sets up first conducting plate with between the second conducting plate, first conducting plate, second conducting plate and insulating substrate pressfitting are in the same place, the lower terminal surface of first conducting plate with the lower terminal surface of second conducting plate flushes and slightly surpasss downwards insulating substrate's lower terminal surface is in order to form the contact portion with battery piece surface contact, first conducting plate is connected with the electric current source electricity and is formed the electric current test unit, second conducting plate and voltage source electricity are connected and are formed the voltage test unit.
2. The battery cell testing plate structure of claim 1, wherein: and the contact parts of the first conductive plate and the second conductive plate are plated with gold on the surfaces.
3. The battery cell testing plate structure of claim 1, wherein: the first conductive plate and the second conductive plate are copper plates.
4. The battery cell testing plate structure of claim 1, wherein: the first conductive plate and the second conductive plate are respectively provided with a bonding pad at a position close to any end of the insulating substrate.
5. The battery cell testing plate structure of claim 1, wherein: the insulating substrate is glass fiber.
6. A battery test plate structure according to claim 3, wherein: the thickness of the first conductive plate is greater than the thickness of the second conductive plate.
7. The battery cell testing plate structure of claim 6, wherein: the thickness of the first conductive plate is 1.6mm-2.0mm, and the thickness of the second conductive plate is 0.8mm-1.2mm.
8. The battery cell testing plate structure of claim 1, wherein: the thickness of the insulating substrate is 3mm-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322426408.2U CN220693109U (en) | 2023-09-07 | 2023-09-07 | Battery piece test board structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322426408.2U CN220693109U (en) | 2023-09-07 | 2023-09-07 | Battery piece test board structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220693109U true CN220693109U (en) | 2024-03-29 |
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ID=90371261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322426408.2U Active CN220693109U (en) | 2023-09-07 | 2023-09-07 | Battery piece test board structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220693109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118039521A (en) * | 2024-04-11 | 2024-05-14 | 滁州捷泰新能源科技有限公司 | A battery cell fine grid insulation test device and method and a back contact assembly preparation method |
-
2023
- 2023-09-07 CN CN202322426408.2U patent/CN220693109U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118039521A (en) * | 2024-04-11 | 2024-05-14 | 滁州捷泰新能源科技有限公司 | A battery cell fine grid insulation test device and method and a back contact assembly preparation method |
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