Pre-heating device before amorphous silicon membrane is battery laminated
Technical field
The utility model relates to the preparatory technology equipment that the amorphous silicon film solar battery component lamination is crossed the Cheng Qian, is the battery laminated preceding pre-heating device of a kind of amorphous silicon membrane specifically, is applicable to the battery laminated technology of amorphous silicon membrane.
Background technology
Solar energy power generating is that the characteristics of cleaning, regenerative resource are accepted by people, will occupy an important position in the economic development in future, has the vast market share.It is crystalline silicon material that current photovoltaic generation uses maximum, (cuts into the loss, the easy fragmentation of silicon chip of silicon chip etc. as silicon ingot) because that the silicon raw material waste in manufacture process is big, causes the crystalline silicon cost to remain high, and silicon materials are in short supply.The temporary transient shortage of silicon is extended volume growth for the amorphous silicon membrane battery technology and has been brought chance.Amorphous silicon solar cell is compared very big advantage with crystalline silicon: have wide range of applications, can generate electricity under low light level situation, material abundance, cheap for manufacturing cost, these advantages are convenient to popularizing of amorphous solar cell.
The amorphous silicon battery assembly is normally made by plating silicon, NI-G (or other element is in modes such as depositions) technology, is made up of main film body battery, EVA glue, back-panel glass (or other material).Thereby in existing technology packaging technology, coated glass, back-panel glass layer glass directly enter the temperature (about 120-150 ℃) that laminating apparatus is set by room temperature, like this, will make assembly temperature raise, form the big temperature difference suddenly, glass easily produces distortion, and, because of layer glass is subjected to the influence distortion of the temperature difference different, causes and vacuumize weak effect, easily make assembly produce bubble, directly have influence on product quality.
Summary of the invention
In view of existing technology status, the purpose of this utility model is to provide pre-heating device before a kind of amorphous silicon membrane lamination, and it has by the assembly to be pressed that enters before the lamination chamber is carried out preheating, with the temperature difference after reducing it and entering the lamination chamber, reduce distortion, finished the utility model on this basis.
For achieving the above object, pre-heating device before the amorphous silicon membrane lamination that the utility model provides, comprise conveyer belt top and be positioned at the conveyer belt bottom heating plate and following to hot plate is installed, cover heating plate and with distributing on the hot plate temperature sensor and heater are set down; Wherein be distributed with temperature sensor on heating plate and the following heating plate on described and be connected with temperature controller, this temperature controller is connected to the PLC controller.Make the temperature of heating plate and play heating plate on it realize regulating by temperature control system and set, control, temperature controlling range is controlled in the temperature range of EVA material, avoids EVA to melt, and can not influence product quality, reaches pre-heat effect.
According to above-mentioned application characteristic, the described temperature controlling range that goes up heating plate and following heating plate is 40-80 ℃.Like this, the EVA material is melted, can guarantee the quality of product again.
Last heating plate and following heating plate related in above-mentioned are to adopt oily heating, electrical heating, oily electric Hybrid Heating or adopt the hot blast mode of heating.The selection of several modes will be selected for use according to the working site condition.
But employed temperature controller adopts fixedly temperature controller or temperature controller in above-mentioned.
Temperature controller is selected Omron E5 series for use; The KT of Panasonic series; Shanghai TTM series.
In a word, pre-heating device before the amorphous silicon membrane lamination that the utility model provides, by utilizing the temperature controller control temperature setting of heating plate up and down, realization is heated in advance to the assembly to be pressed that enters before the lamination chamber, in order to the temperature difference after reducing it and entering the lamination chamber, reduce the distortion of layer glass, this is to implement key of the present utility model.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is another embodiment of Fig. 1;
Fig. 3 is the combination embodiment of Fig. 1 and Fig. 2.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment 1
By pre-heating device before the amorphous silicon membrane lamination shown in Figure 1, comprise that power transmission shaft 4 and power transmission shaft 5 are installed in the two ends on the frame, endless conveyor 3 is installed on it.Wherein a power transmission shaft 5 is connected with drive unit 9, drives conveyer belt 3 cycle rotations and is used for carrying assembly to be pressed.Describedly go up the top that heating plate 1 is positioned at conveyer belt 3, and the preheating chamber 6 between conveyer belt 3, formed of following heating plate 2.Heating plate 1 and following heating plate 2 are to adopt electric heater 10 on present embodiment, and promptly the electric heater 10 on last heating plate 1 and following heating plate 2 is the electric heating tubes of evenly arranging.When waiting to press assembly to enter preheating chamber 6,, the heat that last heating plate 1 and following heating plate 2 produce waits to press the assembly heating because making by conveyer belt 3.For entering preheating chamber 6, satisfied assembly to be pressed is controlled in the certain temperature range, and a plurality of temperature sensors 7 of installation on heating plate 1 and the play heating plate 2 on set, be used to detect heating plate 1 and following heating plate 2 temperature, press PLC controller 11 set temperature value, the temperature signal that feeds back to according to temperature sensor 7, and come control heater 10 whether to open temperature control by temperature controller 8, adjust the temperature of preheating chamber 6.Temperature-control range can reach ± and 3 ℃, reach the purpose that control waits to press preheating heating before the component lamination.
In the present embodiment, according to above-mentioned characteristics, the described temperature controlling range that goes up heating plate 1 and following heating plate 2 is 40-80 ℃.
Employed in the present embodiment temperature controller 8 is the adjustable temperature controllers that adopt.Can select the fixed temperature controller according to actual conditions.
The temperature controller 8 of indication is to select for use PLC controller 11 to control variations in temperature in above-mentioned.
This equipment can be controlled the speed of service, preheating time, preheat temperature, pre-warmware location etc. with the laminating machine central control system unification at scene, realizes and laminating machine synchronous operation, to satisfy the condition that automatic production line links.
In the utility model, preheating chamber 6 areas are to decide according to the area of follow-up supporting laminating machine laminating chamber, to satisfy the needs of the disposable interlock of laminating machine.
Embodiment 2
See Fig. 2, it is different with Fig. 1 be on described in heating plate 1 and the play heating plate 2 the mechanical add mode of employing be processed into the cavity pipeline of snakelike distribution.This cavity pipeline feeds deep fat dielectric heater 20 with circulation.By showing the temperature of required heating, set temperature value is passed to the temperature value that PLC controller 11 is gathered on the temperature sensor of going up on heating plate 1 and the following heating plate 27, judge whether to reach setting value, whether control oily dielectric heater 20 opens, adopt the mode of Power Regulation or end merit heating to come heat medium, accuracy of temperature control ± 1 ℃, the medium of heating in last heating plate 1 and following heating plate 2 cocycles, makes its heat even by pipeline.After reaching setting value, PLC controller 11 adopts the mode of PULSE HEATING to control hot plate temperature.The temperature-control range of hot plate can be reached ± 3 ℃.
In the present embodiment, except that selecting oily heat medium for use, can select for use water or air or hot blast all can as heat medium.
Embodiment 3
See shown in Figure 3, it is to have carried out corresponding combination on the basis of Fig. 1 and Fig. 2, promptly be that combination has been installed electric heater 10 and oily dielectric heater 20 has constituted dual compound heating system on last heating plate 1 and play heating plate 2, be used to improve the temperature control precision of going up heating plate 1 and following heating plate 2.
Its control mode all is by heat medium in PLC controller 11 and the temperature controller 8 difference control heaters and the electric heating tube on the hot plate.According to gathering the temperature sensor of going up on heating plate 1 and the following heating plate 27, regulate heating accuracy.Finally reach the uniformity of heating plate 1 and following heating plate 2 temperature.