CN213184236U

CN213184236U - Novel semi-finished product battery piece carrier with hollow-out blocking rod structure

Info

Publication number: CN213184236U
Application number: CN202021912880.7U
Authority: CN
Inventors: 张望望; 郭强; 张青
Original assignee: Shanxi Lusunshine Volt Technology Co ltd
Current assignee: Shanxi Lusunshine Volt Technology Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-05-11
Anticipated expiration: 2030-09-04

Abstract

The utility model relates to a solar cell production field, in particular to battery piece carrier. A semi-finished battery piece carrier with a novel hollow-out blocking rod structure comprises a left side plate, a right side plate, a front bottom rod, a rear bottom rod, a first front latch blocking rod, a second front latch blocking rod, a first rear latch blocking rod and a second rear latch blocking rod, wherein the front bottom rod and the rear bottom rod are hollow column tubes, a plurality of small holes with the aperture of 1-3mm are formed in the tube walls, and the first front latch blocking rod, the second front latch blocking rod, the first rear latch blocking rod and the second rear latch blocking rod are respectively provided with a hollow column tube with a plurality of small holes with the aperture of 1-3mm and hollow latches. The utility model has the advantages that: the fluidity of liquid at the edges of the carrier and the silicon wafer is increased, the drying effect of the surfaces of the silicon wafer and the carrier in the drying stage is improved, and the residual chemicals and water after the silicon wafer and the carrier are subjected to chemical reaction and water washing are reduced.

Description

Novel semi-finished product battery piece carrier with hollow-out blocking rod structure

Technical Field

The utility model relates to a solar cell production field, in particular to battery piece carrier.

Background

Energy is the most fundamental driving force for development and economic growth throughout the world, and human beings rely on the basis of survival, and since the industrial revolution, energy safety problems have begun to appear. However, fossil fuel reserves on earth are limited. Solar energy is inexhaustible energy, and if electric power is obtained from the solar energy, the solar energy can benefit mankind. The photovoltaic effect is used for manufacturing solar cells to perform photoelectric conversion. It has the following characteristics: no exhaustion risk; absolutely clean; the method is not limited by the region of resource distribution; the energy quality is high; can generate electricity nearby at the power utilization place, and the like. However, in order to achieve a practical level of solar power generation, it is necessary to improve the photoelectric conversion efficiency of solar energy and reduce the cost. The most important thing for improving the conversion efficiency is to improve the conversion efficiency and yield of the photovoltaic cell.

The solar cell is mainly divided into three types, namely polycrystalline silicon, monocrystalline silicon and amorphous silicon. The invention mainly relates to a production process of a monocrystalline silicon SE-PERC battery, which comprises the following process preparation flows: texturing, diffusion, front laser, ozonization, PSG removal, alkali polishing, annealing, back deposition of a passivation film, deposition of an antireflection film, back laser hole opening, back electrode, back electric field and positive electrode printing and high-temperature sintering. In the batch production of each working section, various types of carriers are required to be used for bearing the monocrystalline silicon wafers to carry out physical and chemical reactions, and particularly in the texturing and alkali polishing process sections of the monocrystalline cells, the carriers are required to bear a whole hundred monocrystalline silicon wafers to enter a chemical tank to carry out chemical reactions, so that the standard requirements of semi-finished products of the process are met.

The main steps of the texturing process are as follows: feeding, primary throwing, pre-cleaning, washing, wool making, washing, alkali washing, acid washing, slow lifting, high-temperature drying and discharging;

the alkali polishing process mainly comprises the following steps: feeding, pre-cleaning, washing, alkali polishing, washing, alkali washing, acid washing, slow lifting, high-temperature drying and discharging;

in view of the above, in the texturing and alkaline polishing processes, the carrier needs to carry the silicon wafer to perform multiple chemical reactions and water washing in chemicals and pure water, but the parts of the lever structure and the latch structure of the carrier used at present, which are in contact with and attached to the silicon wafer, cause a large amount of chemical liquid to remain on the silicon wafer and the carrier, so that the final drying effect is affected, the appearance of the silicon wafer is poor, and the efficiency and yield of finished battery pieces are affected. Therefore, improvement is required for this situation.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: how to reduce or avoid the residual chemical liquid at the contact part of the baffle rod structure and the latch structure and the silicon wafer.

The utility model adopts the technical proposal that: a semi-finished product battery piece carrier with a novel hollow-out blocking rod structure comprises a left side plate (1), a right side plate (6), a front bottom rod (4), a rear bottom rod (3), a first front latch blocking rod (5), a second front latch blocking rod (7), a first rear latch blocking rod (2) and a second rear latch blocking rod, wherein the front bottom rod (4) and the rear bottom rod (3) are hollow column tubes, a plurality of small holes with the apertures of 1-3mm are formed in the tube walls of the hollow column tubes, and the first front latch blocking rod (5), the second front latch blocking rod (7), the first rear latch blocking rod (2) and the second rear latch blocking rod are respectively provided with hollow column tubes with a plurality of small holes with the apertures of 1-3mm and hollow latches (8).

The outer wall of each hollow latch (8) is provided with a plurality of small holes with the aperture of 1-3 mm.

The utility model has the advantages that: the fluidity of liquid at the edges of the carrier and the silicon wafer is increased, the drying effect of the surfaces of the silicon wafer and the carrier in the drying stage is improved, and the residual chemicals and water after the silicon wafer and the carrier are subjected to chemical reaction and water washing are reduced.

Drawings

FIG. 1 is a first front latch stop lever formed by a hollow cylindrical tube and a hollow latch;

FIG. 2 is a front bottom bar with a plurality of apertures in the wall of the tube;

FIG. 3 is a top view of a prior art carrier;

FIG. 4 is a front view of a prior art carrier;

the left side plate, the first rear latch stop lever, the rear bottom lever, the front bottom lever, the first front latch stop lever, the right side plate, the second front latch stop lever, and the hollow latch are arranged at 1, 2, 3, 4, 7, 8.

Detailed Description

At present, the carrier used in the wool making and alkali polishing sections of the battery preparation process has a basic structure comprising six independently supported stop rods and two flat plates with holes as support surfaces at two ends respectively. And a plurality of latches are densely distributed on the four blocking rods (a first front latch blocking rod, a second front latch blocking rod, a first rear latch blocking rod and a second rear latch blocking rod) according to uniform intervals respectively and are used for fixing the positions of the silicon wafers in the carriers to prevent the silicon wafers from being mutually attached, each carrier can bear 100 silicon wafers, and the front bottom rod and the rear bottom rod are used for supporting the silicon wafers.

The utility model discloses improve in prior art, just love that all shelves poles and low pole become hollow out construction by solid construction improvement to the surface evenly gathers numerous aperture of 1-3mm, but liquid free flow.

The latch for contacting and jointing the carrier and the silicon wafer is also improved from an original solid structure to a hollow structure, the central part of the latch is changed into a hollow structure, the basic appearance of the latch is kept unchanged, the latch is still uniformly and densely distributed on the stop lever, and meanwhile, the normal fixing function of the latch is ensured. And a plurality of small holes with the diameter of 1-3mm are uniformly and densely distributed on the surfaces of the clamping teeth, so that liquid can freely flow.

The embodiment effectively provides the carrier capable of increasing the liquidity of the liquid on the carrier and the edge of the silicon wafer, reduces the residual chemicals and pure water, and does not influence the normal bearing function of the carrier. Meanwhile, the high-temperature drying effect is effectively improved, the drying time is reduced, the yield of semi-finished battery pieces is improved, and the productivity and the utilization rate of the machine are improved.

Claims

1. The utility model provides a novel semi-manufactured goods battery piece carrier of fretwork shelves pole structure, includes left side board (1), right side board (6), preceding sill bar (4), back sill bar (3), first preceding latch shelves pole (5), latch shelves pole (7) before the second, first back latch shelves pole (2), latch shelves pole behind the second, its characterized in that: the front bottom rod (4) and the rear bottom rod (3) are hollow column tubes, a plurality of small holes with the aperture of 1-3mm are formed in the tube wall, and the first front latch gear lever (5), the second front latch gear lever (7), the first rear latch gear lever (2) and the second rear latch gear lever are respectively formed by hollow column tubes with a plurality of small holes with the aperture of 1-3mm and hollow latches (8).

2. The semi-finished battery piece carrier with the novel hollow-out blocking rod structure as claimed in claim 1, wherein: the outer wall of each hollow latch (8) is provided with a plurality of small holes with the aperture of 1-3 mm.