Preparation method of silicon-based heterojunction battery and silicon-based heterojunction battery
A heterojunction battery and silicon-based technology, which is applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problem of high cost of heterojunction batteries, and achieve the effect of low cost, fewer steps, and less equipment
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Embodiment 1
[0040] This embodiment provides a method for preparing a silicon-based heterojunction cell to replace the low-temperature silver paste printed grid lines in the conventional silicon-based heterojunction cell production process.
[0041] The preparation method of the silicon-based heterojunction battery includes the steps of forming a semiconductor layer, a conductive layer and a gate line on both sides of the silicon substrate, such as Figure 4 As shown, the specific steps of forming the gate lines are as follows:
[0042] Step S100: bonding copper wires covered with conductive glue to the surface of any one of the conductive layers.
[0043] After forming the semiconductor layer and the conductive layer of the silicon-based heterojunction cell, there are two conductive layers which are the light incident surface and the backlight surface respectively. In this step, the copper wire covered with conductive glue is bonded to the light incident surface or The backlight surface,...
Embodiment 2
[0053] This embodiment provides a method for preparing a silicon-based heterojunction cell to replace the low-temperature silver paste printed grid lines in the conventional silicon-based heterojunction cell production process.
[0054] The preparation method of the silicon-based heterojunction battery includes the steps of forming a semiconductor layer, a conductive layer and a gate line on both sides of the silicon substrate, such as Figure 5 As shown, the specific steps of forming the gate lines are as follows:
[0055]Step S100: preheating the light-incident surface of the battery sheet with the conductive layer.
[0056] In this step, to heat the battery sheet, it is necessary to ensure constant temperature and uniform heating. Therefore, in this embodiment, a heating plate with a heating table is used for heating, and a heating light source can be used to irradiate the heating plate, or an In the way of connecting the heating wire, the heating plate is first heated, an...
Embodiment 3
[0071] This embodiment provides a method for preparing a silicon-based heterojunction cell to replace the low-temperature silver paste printed grid lines in the conventional silicon-based heterojunction cell production process, such as Figure 6 As shown, the specific steps are as follows:
[0072] Step S100: preheating the backlight surface of the battery sheet with the conductive layer.
[0073] Step S200: Wetting conductive glue on the surface of the copper wire.
[0074] Step S300: bonding a plurality of copper wires soaked with conductive glue in parallel and equidistant to the backlight surface of the preheated battery sheet.
[0075] Step S400: drying the backlight surface of the battery sheet bonded with the copper wire.
[0076] Step S500: preheating the light-incident surface of the battery sheet with the conductive layer.
[0077] Step S600: bonding a plurality of copper wires impregnated with conductive glue in parallel and equally spaced on the light incident s...
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