CN211507648U - Battery piece suitable for multi-disc is cut - Google Patents
Battery piece suitable for multi-disc is cut Download PDFInfo
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- CN211507648U CN211507648U CN201922425591.8U CN201922425591U CN211507648U CN 211507648 U CN211507648 U CN 211507648U CN 201922425591 U CN201922425591 U CN 201922425591U CN 211507648 U CN211507648 U CN 211507648U
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Abstract
The utility model discloses a battery piece suitable for multi-piece slitting, which comprises at least 2 mutually independent grid line groups, wherein a longitudinal blank area for slitting is arranged between the adjacent grid line groups; the grid line group comprises a longitudinal thin grid line, a transverse thin grid line and a test grid line, wherein a plurality of transverse thin grid lines are connected between the test grid line and the longitudinal thin grid line; the test grid line comprises an inner grid line and an outer grid line which are electrically connected with the transverse fine grid line, and a plurality of contact test points for power and EL test are connected between the inner grid line and the outer grid line. Adopt the utility model discloses, simple structure, the detection of easily circuit, and be convenient for unqualified grid line group cuts the screening.
Description
Technical Field
The utility model relates to a solar wafer technical field especially relates to a battery piece suitable for multi-disc is cut.
Background
From 2015, the photovoltaic industry entered the technology-driven era. The power of the component is improved to 10-20W each year from 5W each year before. The 400W + era was opened in 2019, and the large-size battery gradually becomes the mainstream. The evolution from traditional M2 to M4, M6 and even M12. With the gradual increase of the battery area, the packaging technology of the assembly for dividing one battery into a plurality of small batteries is more and more varied. Such as: half (all two), plate interconnection (all three), stitch welding (all three) and tile folding (all five). It is expected that M12 cells will be in year 2020 and more will subsequently occupy the market.
At present, only a part of enterprises use half-cell patterns (namely, the upper part and the lower part are separated) and the half-cell patterns are horizontal. This method is not suitable for cutting a whole battery into 3 pieces or more, and if the battery pattern does not correspond to the number of cuts, there may be a risk of edge leakage. Serious safety problems such as component failure, power station fire, etc. can be caused by serious persons.
On the other hand, because the grid line of battery piece is very tiny, takes place to open circuit easily and influences the generating efficiency, and every piece subassembly power uniformity can influence the whole output power stability of power station to the loss and the reliability reduction condition that bring appear that certain piece subassembly power is low, thereby appear the problem of vat effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a battery piece is provided, simple structure, easily the detection of circuit, and be convenient for unqualified grid line group cuts the screening.
In order to solve the technical problem, the utility model provides a battery piece, which comprises at least 2 mutually independent grid line groups, wherein a longitudinal blank area for cutting is arranged between the adjacent grid line groups;
the grid line group comprises a longitudinal thin grid line, a transverse thin grid line and a test grid line, wherein a plurality of transverse thin grid lines are connected between the test grid line and the longitudinal thin grid line;
the test grid line comprises an inner grid line and an outer grid line which are electrically connected with the transverse fine grid line, and a plurality of contact test points for power and EL test are connected between the inner grid line and the outer grid line.
As an improvement of the above scheme, the vertical blank space separates adjacent gate line groups.
As an improvement of the scheme, the longitudinal blank area is in a strip shape and is arranged in parallel with the test grid line.
As an improvement of the above scheme, the length of the contact test point is greater than the distance between adjacent transverse fine grid lines.
As an improvement of the above scheme, the length of the contact test point is 1-3 times of the distance between adjacent transverse fine grid lines.
As an improvement of the scheme, the widths of the longitudinal thin grid lines, the transverse thin grid lines, the inner grid lines and the outer grid lines are 30-40 microns.
As an improvement of the scheme, the distance between adjacent transverse fine grid lines is 1-1.5 mm.
As an improvement of the above scheme, the width of the longitudinal blank area is 2-3 times of the distance between adjacent transverse fine grid lines.
As a modification of the above scheme, at least 10 contact test points are provided.
Implement the utility model discloses, following beneficial effect has:
the utility model discloses a battery piece, including 2 at least mutually independent grid line groups, it is adjacent be equipped with the vertical blank area that is used for cutting between the grid line group, so that it is right the utility model discloses a cut and screen out bad part to improve the whole electrical property after this product equipment.
In the aspect of detection of each grid line group, each grid line group comprises a longitudinal thin grid line, a transverse thin grid line and a test grid line, and a plurality of transverse thin grid lines are connected between the test grid line and the longitudinal thin grid line; the test grid line comprises an inner grid line and an outer grid line which are electrically connected with the transverse fine grid line, and a plurality of contact test points for power and EL test are connected between the inner grid line and the outer grid line. Therefore, the arrangement of the contact test points is convenient for testing the contact detection of the press pins, and the comprehensive electrical property of the grid line group and the problem area for finding the grid line can be obtained by testing the electrical property of the area between the adjacent contact test points.
Drawings
Fig. 1 is a schematic structural diagram of a battery plate of the present invention;
fig. 2 is a schematic structural diagram of the gate line set of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the utility model provides a battery piece, which comprises at least 2 mutually independent grid line groups 1, wherein a longitudinal blank area 2 for slitting is arranged between the adjacent grid line groups 1;
the gate line group 1 comprises a longitudinal thin gate line 11, a transverse thin gate line 12 and a test gate line 13, wherein a plurality of transverse thin gate lines 12 are connected between the test gate line 13 and the longitudinal thin gate line 11;
the test gate line 13 includes an inner gate line 131 and an outer gate line 132 electrically connected to the transverse thin gate line 12, and a plurality of contact test points 3 for power and EL tests are connected between the inner gate line 131 and the outer gate line 132.
Specifically, the longitudinal blank area 2 separates the adjacent gate line groups 1, and the longitudinal blank area 2 is in a strip shape and is arranged in parallel with the test gate line 13. The conventional common half-sheet battery pattern is divided into an upper half and a lower half, and the dividing line and the main grid line (electrode) are vertically arranged, so that when the battery sheet is divided, the length of the main grid line is not suitable for the length limited by the detection pressing needle, and the related electrical performance cannot be tested.
On the other hand, the secondary grid line of the existing half-piece pattern is processed in a transverse penetration mode, so that the electric leakage phenomenon can occur after cutting, and the safety of the product is affected. And right the utility model discloses, because each grid line group 1 mutual independence, each horizontal thin grid line 12 is not connected each other, the phenomenon of electric leakage can not appear after the event cutting.
Because the manufacturing raw materials of the grid lines of the existing battery piece are expensive, the widths of the longitudinal thin grid lines 11, the transverse thin grid lines 12, the inner grid lines 131 and the outer grid lines 132 are 30-40 micrometers, and the distance between every two adjacent transverse thin grid lines 12 is 1-1.5 millimeters.
In order to facilitate contact with a pressing needle for testing electrical performance, the contact test points 3 are in a strip shape, the length of each contact test point 3 is greater than the distance between adjacent transverse fine grid lines 12, and the width of each contact test point 3 is not less than the distance between the inner grid line 131 and the outer grid line 132.
Meanwhile, in order to improve the test accuracy of the gate line group 1, the length of the contact test point 3 is 1-3 times of the distance between the adjacent transverse thin gate lines 12, and the width of the longitudinal blank area is 2-3 times of the distance between the adjacent transverse thin gate lines. It should be noted that the longer the contact test point 3 is, the more the transverse thin gate lines are connected to the contact test point 3, so as to affect the accuracy of the electrical performance of the area between two adjacent contact test points 3. Moreover, the contact test point 3 has a large width and a large length, which leads to a drastic increase in the amount of manufacturing raw materials consumed, thereby increasing the test cost in production.
Preferably, the widths of the longitudinal thin gate lines 11, the transverse thin gate lines 12, the inner gate lines 131 and the outer gate lines 132 are 38 micrometers, and the distance between adjacent transverse thin gate lines 12 is 1.2 millimeters.
The number of the contact test points 3 can be set according to the size of the battery piece, so that the detection accuracy of the product is ensured. Preferably, at least 10 contact test points 3 are provided.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (9)
1. A battery piece suitable for cutting a plurality of pieces is characterized by comprising at least 2 mutually independent grid line groups, wherein a longitudinal blank area for cutting is arranged between every two adjacent grid line groups;
the grid line group comprises a longitudinal thin grid line, a transverse thin grid line and a test grid line, wherein a plurality of transverse thin grid lines are connected between the test grid line and the longitudinal thin grid line;
the test grid line comprises an inner grid line and an outer grid line which are electrically connected with the transverse fine grid line, and a plurality of contact test points for power and EL test are connected between the inner grid line and the outer grid line.
2. The battery cell of claim 1, wherein the longitudinal void spaces separate adjacent groups of the grid lines.
3. The battery piece of claim 1, wherein the longitudinal blank area is in a strip shape and is arranged in parallel with the test grid line.
4. The battery piece of claim 1, wherein the length of the contact test point is greater than the spacing between adjacent transverse fine grid lines.
5. The battery piece of claim 1, wherein the length of the contact test point is 1-3 times the distance between adjacent transverse fine grid lines.
6. The battery piece of claim 1, wherein the width of the longitudinal fine grid lines, the transverse fine grid lines, the inner grid lines and the outer grid lines is 30-40 microns.
7. The battery piece of claim 1, 5 or 6, wherein the spacing between adjacent transverse fine grid lines is 1-1.5 mm.
8. The battery piece of claim 7, wherein the width of the longitudinal blank area is 2-3 times of the spacing between adjacent transverse fine grid lines.
9. The battery cell as claimed in claim 1, wherein there are at least 10 contact test points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922425591.8U CN211507648U (en) | 2019-12-30 | 2019-12-30 | Battery piece suitable for multi-disc is cut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922425591.8U CN211507648U (en) | 2019-12-30 | 2019-12-30 | Battery piece suitable for multi-disc is cut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211507648U true CN211507648U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922425591.8U Active CN211507648U (en) | 2019-12-30 | 2019-12-30 | Battery piece suitable for multi-disc is cut |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635605A (en) * | 2020-12-28 | 2021-04-09 | 常州时创能源股份有限公司 | Preparation method of M10 cell photovoltaic module |
-
2019
- 2019-12-30 CN CN201922425591.8U patent/CN211507648U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635605A (en) * | 2020-12-28 | 2021-04-09 | 常州时创能源股份有限公司 | Preparation method of M10 cell photovoltaic module |
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