IV probe row for Topcon battery production

Abstract

The utility model discloses an IV probe row used for Topcon battery production, comprising a glass fiber plate and a plurality of elastic probes, the glass fiber plate is provided with a plurality of probe grooves, the probe grooves are distributed at equal intervals and are parallel to each other, the elastic probes pass through the probe grooves, the two side surfaces of the glass fiber plate are provided with upper bus bars and lower bus bars, and the upper bus bars and the lower bus bars are arranged on the two side surfaces of the glass fiber plate. The upper bus bar is provided with a plurality of upper spot welding hole sites, the lower bus bar is provided with a plurality of lower spot welding hole sites, and the upper spot welding hole sites and the lower spot welding hole sites are communicated with the elastic probes at intervals and are welded together. According to the IV probe row for Topcon battery production, IV detection is carried out on silicon wafers of Topcon batteries in the production process, elastic probes in the whole row are driven by a glass fiber plate to make contact with the silicon wafers, the silicon wafers are elastically contacted and protected, solar simulation detection is carried out on the silicon wafers through IV, and the probes and a circuit collect current and voltage signals to carry out software analysis so as to test the electricity storage capacity of the silicon wafers. Grading information is transmitted to a high-speed board separator, and then classified blanking is carried out according to grading signals.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicon wafer production, especially to a kind of IV probe array for Topcon battery production. BACKGROUND

[0002] Photovoltaic solar silicon wafer (hereinafter referred to as silicon wafer) is the core part of solar power generation system, and also the highest value part in solar power generation system. The role of silicon wafer is to convert solar energy into electrical energy, and the electrical energy is stored by battery or directly loaded. Topcon is Tunnel Oxide Passivating Contacts, which is a kind of photovoltaic cell technology. In the production of its component silicon wafer, IV detection is needed. Probe and circuit collect current and voltage signals for software analysis to test its storage capacity. For this test, corresponding IV probe array is needed. UTILITY MODEL CONTENT

[0003] One purpose of the utility model is to provide a kind of IV probe array for Topcon battery production, stable performance, reasonable structure, suitable for the detection equipment of Topcon battery production.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] An IV probe array for Topcon battery production includes fiberglass plate and a plurality of elastic probes. The middle part of the fiberglass plate is provided with a plurality of probe grooves along the vertical direction. The probe grooves are distributed at equal intervals and parallel to each other. The elastic probes pass through the probe grooves. The two side surfaces of the fiberglass plate are provided with upper bus bars and lower bus bars. The upper bus bars are provided with a plurality of upper spot welding hole positions. The lower bus bars are provided with a plurality of lower spot welding hole positions. The upper spot welding hole positions and the lower spot welding hole positions are communicated with the elastic probes in an interval type and welded together.

[0006] As a preferred technical scheme, the elastic probe includes a needle sleeve and a needle head. The lower end of the needle sleeve is provided with a mounting position. The upper end of the needle head is inserted into the mounting position. The needle head is elastically reciprocating.

[0007] As a preferred technical scheme, the lower end of the needle sleeve is provided with a circular ring protrusion. The circular ring protrusion is clamped at the lower end of the fiberglass plate.

[0008] As a preferred technical scheme, the height of the welding spot in the upper spot welding hole position and the height of the welding spot in the lower spot welding hole position are both lower than the side surface of the fiberglass plate.

[0009] As a preferred technical scheme, one end of the upper bus bar on one side of the glass fiber plate is provided with a probe row black line joint, one end of the lower bus bar on the other side of the glass fiber plate is provided with a probe row red line joint, and the probe row red line joint and the probe row black line joint are respectively located at two ends of the glass fiber plate.

[0010] As a preferred technical scheme, the glass fiber plate is provided with a fitting mounting hole on two sides.

[0011] The utility model discloses a kind of IV probe rows for Topcon battery production, and the IV probe row for Topcon battery production carries out IV detection to the silicon wafer of Topcon battery in production process, and the silicon wafer is protected by the elastic contact of the elastic probe of whole row under the driving of glass fiber plate, IV probe row is converted into performance parameter as the standard of judging silicon wafer by the voltage and current detected, it is favorable to improve production quality, improve capacity. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further described in detail below according to drawing and embodiment.

[0013] Fig. 1 The whole structure schematic view of a kind of IV probe row for Topcon battery production described in embodiment;

[0014] Fig. 2 The front view of a kind of IV probe row for Topcon battery production described in embodiment;

[0015] Fig. 3 The section view of a kind of IV probe row for Topcon battery production described in embodiment

[0016] Fig. 4 The exploded view of elastic probe described in embodiment.

[0017] Figs. 1 to 4 In the middle:

[0018] 1, glass fiber plate;2, elastic probe;3, upper bus bar;4, lower bus bar;5, upper spot welding hole site;6, lower spot welding hole site;7, needle sleeve;8, needle head;9, installation site;10, probe row black line joint;11, circular ring protrusion;12, fitting mounting hole. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be further illustrated below by specific embodiment in connection with drawing.

[0020] As Figs. 1 to 4As shown, in the embodiment, an IV probe array for Topcon battery production includes a fiberglass plate 1 and a plurality of elastic probes 2. The middle part of the fiberglass plate 1 is provided with a plurality of probe slots along the vertical direction. The probe slots are equidistantly distributed and parallel to each other. The elastic probes 2 pass through the probe slots. The two side surfaces of the fiberglass plate 1 are provided with an upper bus bar 3 and a lower bus bar 4. The upper bus bar 3 is provided with a plurality of upper spot welding hole positions 5. The lower bus bar 4 is provided with a plurality of lower spot welding hole positions 6. The upper spot welding hole positions 5 and the lower spot welding hole positions 6 are in communication with the elastic probes 2 in an interval mode and are welded together.

[0021] The probe slots are formed on the fiberglass plate 1. The upper bus bar 3 with the upper spot welding hole positions 5 and the lower bus bar 4 with the lower spot welding hole positions 6 are installed. The elastic probes 2 pass through the probe slots. Spot tin is performed on the upper spot welding hole positions 5 and the lower spot welding hole positions 6. The elastic probes 2 are fixed on the fiberglass plate 1. The elastic probes 2 welded together by the upper bus bar 3 and the elastic probes 2 welded together by the lower bus bar 4 are separated in an interval mode.

[0022] Specifically, the elastic probe 2 includes a needle sleeve 7 and a needle head 8. The lower end of the needle sleeve 7 is provided with a mounting position 9. The upper end of the needle head 8 is inserted into the mounting position 9. The needle head 8 is elastically reciprocated. The needle head 8 is inserted into the lower end of the needle sleeve 7 to form an elastic structure.

[0023] The lower end of the needle sleeve 7 is provided with a circular ring protrusion 11. The circular ring protrusion 11 is clamped at the lower end of the fiberglass plate 1. The elastic probe 2 is effectively prevented from being excessively shrunk upward. The position is limited.

[0024] The height of the welding points in the upper spot welding hole positions 5 and the height of the welding points in the lower spot welding hole positions 6 are lower than the side surface of the fiberglass plate 1. After spot welding, the position of the spot welding cannot protrude from the plane of the fiberglass plate 1.

[0025] One end of the upper bus bar 3 on one side of the fiberglass plate 1 is provided with a probe array black line connector 10. One end of the lower bus bar 4 on the other side of the fiberglass plate 1 is provided with a probe array red line connector. The probe array red line connector and the probe array black line connector 10 are respectively located at the two ends of the fiberglass plate 1. The signal forms a loop output through the butt joint of the probe array red line connector and the probe array black line connector 10. The IV test is facilitated.

[0026] The two sides of the fiberglass plate 1 are provided with accessory mounting holes 12. The entire IV probe array is installed in a mounting frame according to the accessory mounting holes 12. The mounting frame is assembled to a detection mechanism.

[0027] It should be noted that the above specific embodiments only serve as the preferred embodiments of the present application and the applied technical principles. Any changes or replacements easily thought by those skilled in the art within the technical range disclosed by the present application should be covered in the protection range of the present application.

Claims

1. An IV probe array for Topcon cell production, characterized by, The device comprises a glass fiber plate and a plurality of elastic probes, the middle part of the glass fiber plate is provided with a plurality of probe grooves along the vertical direction, the probe grooves are distributed at equal intervals and are parallel to each other, the elastic probes pass through the probe grooves, the upper and lower bus bars are arranged on the two side surfaces of the glass fiber plate, a plurality of upper spot welding hole positions are arranged on the upper bus bar, a plurality of lower spot welding hole positions are arranged on the lower bus bar, the upper spot welding hole positions and the lower spot welding hole positions are communicated with the elastic probes in an interval mode and are welded together.

2. An IV probe bank for Topcon cell production as claimed in claim 1, wherein, The elastic probe comprises a needle sleeve and a needle head, the lower end of the needle sleeve is provided with a mounting position, the upper end of the needle head is inserted into the mounting position, and the needle head elastically reciprocates.

3. An IV probe bank for Topcon cell production as claimed in claim 2, wherein, The lower end of the needle sleeve is provided with a circular ring protrusion, and the circular ring protrusion is clamped at the lower end of the glass fiber plate.

4. An IV probe bank for Topcon cell production as defined in claim 1, characterized in that, The height of the welding spot in the upper spot welding hole position and the height of the welding spot in the lower spot welding hole position are both lower than the side surface of the glass fiber plate.

5. An IV probe bank for Topcon cell production as defined in claim 1, characterized in that, One end of the upper bus bar on one side of the glass fiber plate is provided with a probe black line discharging joint, one end of the lower bus bar on the other side of the glass fiber plate is provided with a probe red line discharging joint, and the probe red line discharging joint and the probe black line discharging joint are respectively located at the two ends of the glass fiber plate.

6. An IV probe bank for Topcon cell production as defined in claim 1, characterized in that, The two sides of the glass fiber plate are provided with accessory mounting holes.

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