CN105188161A - Low-resistance-value electrical-heating coated glass and manufacturing technology thereof - Google Patents

Low-resistance-value electrical-heating coated glass and manufacturing technology thereof Download PDF

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Publication number
CN105188161A
CN105188161A CN201510486967.XA CN201510486967A CN105188161A CN 105188161 A CN105188161 A CN 105188161A CN 201510486967 A CN201510486967 A CN 201510486967A CN 105188161 A CN105188161 A CN 105188161A
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glass
micro wiring
low
micro
resistance
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王天根
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SHAOXING TRANSPARENT ARMOR MATERIAL CO Ltd
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SHAOXING TRANSPARENT ARMOR MATERIAL CO Ltd
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Abstract

In the low-resistance-value electrical-heating coated glass, a conducting film is coated on glass; two edges of the conducting film are connected with two power lines so as to form bus bars; and two groups of micro leads which are mutually disjointed are arranged between the two bus bars. A manufacturing technology of the low-resistance-value electrical-heating coated glass comprises the following steps of 1) laying the micro leads on a glass surface; 2) carrying out metal coating processing on the glass surface; 3) coating and pasting power supply bus bars on the two edges of the micro leads, alternatively connecting each micro lead according to a mode of separating one and another, the bus bars are served as the power lines and are led out from a side surface of the glass so as to connect a positive electrode and a negative electrode of a power supply; 4) measuring a total resistance, comparing with an Rn and adjusting a technological parameter. By using the low-resistance-value electrical-heating coated glass, problems of an optical distortion problem and a low electric heating power density existing in current heating wire heating glass are simultaneously solved, and the electrical-heating coated glass with a large width can be used normally under a condition of a 24V low voltage.

Description

Low-resistance value electric heating coating film glass and its manufacturing process
Technical field
The invention belongs to the manufacturing technology field of features glass, relate to a kind of designing and making method of low-resistance value electric heating coating film glass.
Background technology
Electrothermal plating film glass on existing market is coated with upper conductive film at glass surface, at two edges of glass, a wire is respectively set as busbar, busbar communicates with the both positive and negative polarity of external power supply, conducting film is the equal of the large resistance be connected on power supply, when applying voltage, conducting film is heating just.Electrothermal plating film glass uses usually in both cases: (1) glass width is less than 100mm, and the little then electric current of width is short by the distance of rete, and resistance is little; Can use at lower voltages; (2) glass width is greater than 100mm, and resistance is large, must use high voltage, guarantee the heating power reaching needs.Heating power=V*V/R, this computing formula shows square being directly proportional of the heating power of electrothermal plating film glass and voltage, is inversely proportional to resistance.Therefore, the higher heating effect of voltage is more obvious.
But in actual applications, the width that electric ehated glass needs is far longer than 100mm, and high-tension use can increase many technical requirements, corresponding Financial cost and supplies consumption, as the volume of transformer, weight, the electric energy loss etc. in material insulation property and transformation process.Only high voltage causes insulation property to improve, not only directly causes the direct cost of relative electronic components, but also causes the factory overhead of other parts relevant with insulation to improve to be greater than raising; Furthermore, the increment of this indirect cost is considerably beyond the increment of direct cost.Front windshield on domestic and international luxurious car uses electric-heating-wire-heating glass, and is also this without the partly cause of electrothermal plating film glass.But with the electric ehated glass of heating wire, if heating power density is too high, there will be light distortion phenomenon in use.Electrical heating power density is higher, and light distortion is more serious.Its fundamental cause is between two adjacent heating wire at a distance of 1-5mm, its Temperature Distribution is in " V " font, arbitrary neighborhood heating wire surface temperature is high, middle is low, this temperature gradient causes the index of refraction inconsistency of transparent organic material around heating wire, thus producing light distortion phenomenon, the figure seen through this glass can be felt to create distortion, also easily causes visual fatigue.
In view of this, the present inventor develops low-resistance value electric heating coating film glass, and this case produces thus.
Summary of the invention
In order to solve the light distortion problem that exists in current electric-heating-wire-heating glass use procedure and the too low problem of electrothermal plating film vitreous electricity heating power density simultaneously, we have developed low-resistance value electrothermal plating film glass, and the electric heating coating film glass of large width can normally be used under 24V low-voltage condition.
To achieve these goals, technical scheme of the present invention is as follows:
1. low-resistance value electrothermal plating film glass, glass is coated with conducting film, and is connected to two power lines in the two edges of conducting film as busbar, it is characterized in that: between two busbars, laid two groups of mutually disjoint micro wirings; Micro wiring wire diameter is less than 0.05mm, and its resistivity is less than 15 ohm/M, interval 10-300mm between micro wiring.
2. micro wiring is laid in the groove of glass surface.
3. the another kind of layout scheme of micro wiring protrudes on the glass surface.
4. the manufacturing process of above-mentioned low-resistance value electrothermal plating film glass comprises the following steps:
1) on ito glass or other metal coating glass surface, lay micro wiring, micro wiring length, between micro wiring and busbar, the technological parameter such as spacing is tried to achieve by calculating according to micro wiring technological parameter computing formula;
2). do ITO or other metal coating process at glass surface, coating film thickness, between 0.01-0.001 millimeter, ensures that light transmittance is greater than 50%;
3). in the two edges of micro wiring, power bars is sticked in plating, by one every one the mode respectively every bar micro wiring of alternate connection, busbar is drawn from glass sides as power line, connects power positive cathode;
4). measure all-in resistance, compare and R ndifference.As error is greater than 10%, adjusting process parameter, guarantees that new coated glass resistance value reduces n doubly than conventional coated glass.
The electric current of conventional electrothermal plating film glass flows to the negative pole of busbar by metal coating from the positive pole of busbar, the spacing of two busbars (is denoted as L 1) all-in resistance that directly determines this electrothermal plating film glass (is denoted as R c), after busbar adds micro wiring, electric current delivers to micro wiring by busbar, then passes through metal coating laminar flow to another micro wiring by micro wiring, then is flow to the busbar of another pole by micro wiring.Like this, the distance of electric current movement on metal-plated rete reduces greatly, thus the resistance value making the resistance value of electrothermal plating film glass drop to design (is denoted as R n), make the electrothermal plating film glass of large width also can obtain higher electrical heating power under low-voltage condition.
The length of every root micro wiring is L 3, the spacing of adjacent micro wiring is x millimeter, and micro wiring is also x millimeter with the distance of the busbar be not connected, therefore, and L 3=L 1-x.X can by following formulae discovery:
x = L 1 * 1 + 4 n - 1 2 n ... ( 1 )
In formula, n is R c/ R nratio.For example, 420mm is long, and the total resistance value of the ITO electrothermal plating film glass that 420mm is wide is 14 ohm, and under the voltage of 24V, heating power is 41W, if will reach the heating power of 400, total resistance value must from 14 (R c) be reduced to 1.4 (R n) ohm, R c/ R nratio n be 10,
Quantitative design can be done to electrothermal plating film glass according to x value, determine the process parameter value such as the length of micro wiring, spacing.
The computing formula of x value is obtained by following reasoning process:
Add coated glass all-in resistance (R before micro wiring c) computing formula is:
R c = ρ d L 1 L 2
Add coated glass all-in resistance (R after micro wiring n) computing formula is:
R n = ρ d x 2 L 2 ( L 1 - x ) = ρ d L 1 L 2 * x 2 L 1 ( L 1 - x ) , Or
R n = x 2 R c L 1 2 - L 1 x ... ( 2 )
Wherein: L 1for the distance (glass width) that electric current flows between busbar, L 2for bus bar length (glass length), (L 1-x) be micro wiring length, ρ is resistivity, and d is thickness of coating, R cfor the resistance of conventional ITO electrothermal plating film glass before micro wiring distribution, the resistance R of the ITO electrothermal plating film glass distributing later with micro wiring npass be: R c=nR n,
Above-mentioned relation formula (2) can be organized into the quadratic equation with one unknown of x:
x 2 R c + L 1 x - R n L 1 2 = 0 ... ( 3 )
Above-mentioned quadratic equation with one unknown is solved, and gets on the occasion of obtaining
x = L 1 * R n 2 + 4 R c * R n - R n 2 R c ... ( 4 )
According to R c=nR nrelation, to relational expression (4) abbreviation, just can obtain formula (1)
6. set up recessed micro wiring with engraving method; Micro wiring length, between micro wiring and busbar, the technological parameter such as spacing calculates according to formula (1) and determines.At ito glass or other metal coating glass surface engraving stria, groove width and groove depth are all less than 0.05mm, are embedded in silver or other electric conducting material at groove, make micro wiring thus, micro wiring wire diameter is less than 0.05mm, and its resistivity is less than 15 ohm/M, interval 10-300mm between micro wiring;
7. add the micro wiring of protrusion by printed circuit method, comprise following processing step:
1) silk-screen template is made; Ito glass or other metal coating glass print micro wiring circuit diagram, makes micro wiring with silver slurry or the better material of conductivity.
Low-resistance electric hot dip film glass made by said method, solve light distortion problem that current electric-heating-wire-heating glass in use exists and the too low problem of electrothermal plating film vitreous electricity heating power density simultaneously, the electric heating coating film glass of large width can normally be used under 24V low-voltage condition.Can be used in many engineering designs, as aircraft, the power supply of the ITO electrically heated glass on boats and ships can change low-tension supply into.Use low-tension supply to reduction device fabrication cost, reduce apparatus insulated requirement, alleviate the many advantages such as weight of equipment, volume and be difficult to describe one by one.
Accompanying drawing explanation
Fig. 1 is electrothermal plating film glass arrangement of conductors schematic diagram;
Fig. 2 is the A-A line cutaway view along Fig. 1;
Fig. 3 is B place enlarged drawing in Fig. 2;
Fig. 4 is the stereogram of new electrothermal plating film glass.
Reference numeral:
1. micro wiring (with engraving method make, in recessed; With stencil making is epirelief); 2. busbar; 3 metal coatings; 4 glass.
Embodiment
Below by drawings and Examples, the present invention is further elaborated.
Embodiment 1:
The conventional ITO electrothermal plating film glass of 160*570 millimeter, light transmittance 78%, busbar spacing 155mm, resistance is 5.6 ohm.After designing and calculating, press the vertical line engraving of accompanying drawing 1 at glass surface laser, groove width 0.02mm, groove depth 0.02mm, make the micro wiring resistance value after being full of proof gold in every bar groove be 9 ohm/M; Interval 25mm between flute length 130mm, groove, after micro wiring has distributed, its new resistance value is 0.26 ohm, is 1/22nd of former resistance.
Novel electric heating coated glass in the present embodiment, after above-mentioned process, after inputting 24 volts of power supplys, after ten minutes, glass surface temperature more than 40 DEG C, and by thermostat, maintains 40 DEG C, through the unglazed distortion phenomenon of sight glass.
Embodiment 2:
The conventional electrothermal plating film glass of 160*570 millimeter, light transmittance 78%, busbar spacing 155mm, resistance is 5.6 ohm.By exposure method, accompanying drawing 1 is made silk-screen template, live width 0.02mm, line length 130mm, interval 25mm between line.It is 11 ohm/M that screen printer starches the micro wiring resistivity of printing with silver; After micro wiring is completed for printing, its new resistance value is 0.29 ohm, is 1/19th of former resistance.
Novel electric heating coated glass in the present embodiment, input 24 volts of power supplys after above-mentioned process after, after 13 minutes, glass surface temperature more than 40 DEG C, and by thermostat, maintains 40 DEG C, through observing unglazed distortion phenomenon.
Embodiment 3:
The long 420mm of ITO electrothermal plating film glass, wide 420mm, resistance value is 14 ohm, and under the voltage of 24V, power is 41W, cannot realize the effect removing glass surface frost under-43 DEG C of environment.If reach this effect, heating power must mention 400W, and resistance value must be reduced to 1.4 (Rn) ohm from 14 (Rc), and the ratio n of Rc/Rn is 10.X value is calculated for 113mm according to above-mentioned condition formula (1).Consider the uniformity that micro wiring distributes, x value is adjusted to 104mm, prepares silk-screen template thus, and after silver slurry printing micro wiring, its new resistance value is 1.25 ohm, is 1/11st of former resistance.
Novel electric heating coated glass in the present embodiment, after inputting 24 volts of power supplys, after 11 minutes, successfully removes glass surface frost after above-mentioned process under-43 DEG C of environment, then glass surface temperature and then more than 20 DEG C, and by thermostat, maintains 20 DEG C.Unglazed distortion phenomenon during through observing at electrified regulation.
In above-mentioned case study on implementation, the micro wiring distribution mode that the electrothermal plating film glass arrangement of conductors schematic diagram of 1 is made with reference to the accompanying drawings can reduce the total resistance value of electrothermal plating film glass effectively, and the electrothermal plating film glass of large width can be made to be applied under low-voltage condition.But the resistance of actual measurement reduces multiple and theory calculate has certain difference, because do not consider the resistance of micro wiring when theory calculate, and the resistance of micro wiring and ITO contact interface.But this small difference does not affect the application of this technology.In addition, can be appropriately adjusted (as shown in case 3) by the micro wiring spacing calculated, micro wiring is evenly distributed, and then heating power is evenly distributed.

Claims (7)

1. low-resistance value electrothermal plating film glass, glass is coated with conducting film, and is connected to two power lines in the two edges of conducting film as busbar, it is characterized in that: between two busbars, laid two groups of mutually disjoint micro wirings; Micro wiring wire diameter is less than 0.05mm, and its resistivity is less than 15 ohm/M, interval 10 ~ 300mm between micro wiring.
2. low-resistance value electrothermal plating film glass as claimed in claim 1, is characterized in that: micro wiring is laid in the groove of glass surface.
3. low-resistance value electrothermal plating film glass as claimed in claim 1, is characterized in that: the another kind of layout scheme of micro wiring protrudes on the glass surface.
4. its manufacturing process of low-resistance value electrothermal plating film glass as claimed in claim 1 comprises the following steps:
1) on ito glass or other metal coating glass surface, lay micro wiring, micro wiring length, between micro wiring and busbar, the technological parameter such as spacing is tried to achieve by calculating according to micro wiring technological parameter computing formula;
2). do ITO or other metal coating process at glass surface, coating film thickness, between 0.01-0.001 millimeter, ensures that light transmittance is greater than 50%;
3). in the two edges of micro wiring, power bars is sticked in plating, by one every one the mode respectively every bar micro wiring of alternate connection, busbar is drawn from glass sides as power line, connects power positive cathode;
4). measure all-in resistance, compare the difference with Rn.As error is greater than 10%, adjusting process parameter, guarantees that new coated glass resistance value reduces n doubly than conventional coated glass.
5. low-resistance value electrothermal plating film technology for making glass as claimed in claim 4, is characterized in that: micro wiring technological parameter computing formula is:
Micro wiring spacing x computing formula:
Micro wiring length computation formula: L 3=L 1-x
Wherein, the length of every root micro wiring is L 3, the spacing of adjacent micro wiring is x millimeter, and the distance of micro wiring and disjoint busbar is also x millimeter, L 1it is the spacing of two busbars.
6. low-resistance value electrothermal plating film technology for making glass as claimed in claim 4, is characterized in that: described micro wiring engraving method is set up; Micro wiring length, between micro wiring and busbar, the technological parameter such as spacing calculates according to formula (1) and determines.At ito glass or other metal coating glass surface engraving stria, groove width and groove depth are all less than 0.05mm, are embedded in silver or other electric conducting material at groove, make micro wiring thus, micro wiring wire diameter is less than 0.05mm, and its resistivity is less than 15 ohm/M, interval 10-300mm between micro wiring.
7. low-resistance value electrothermal plating film technology for making glass as claimed in claim 4, is characterized in that: the described micro wiring adding protrusion by printed circuit method, comprises following processing step: make silk-screen template; Ito glass or other metal coating glass print micro wiring circuit diagram, makes micro wiring with silver slurry or the better material of conductivity.
CN201510486967.XA 2015-08-11 2015-08-11 Low-resistance-value electrical-heating coated glass and manufacturing technology thereof Pending CN105188161A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110091832A (en) * 2019-03-20 2019-08-06 广东工业大学 A kind of antifog glass and its manufacturing method
CN111356253A (en) * 2018-12-21 2020-06-30 绍兴明透装甲材料有限责任公司 Electric heating glass with different complementary heating systems

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2768365Y (en) * 2005-01-13 2006-03-29 林正平 Electric heating diaphragm with electric distribution structure
EP2618632A2 (en) * 2010-09-14 2013-07-24 LG Chem, Ltd. Heating element and manufacturing method thereof
CN203193915U (en) * 2013-02-20 2013-09-11 廊坊市金色时光科技发展有限公司 Automobile seat and foil-type conductive heating membrane thereof
CN103415092A (en) * 2013-07-11 2013-11-27 九阳股份有限公司 Processing method of thick film heating device, thick film heating container and equipment
CN103477706A (en) * 2011-04-12 2013-12-25 法国圣戈班玻璃厂 Electrically heatable carrier and panel radiator, and method for the production thereof
CN103974471A (en) * 2013-02-01 2014-08-06 Kmt纳米科技（香港）有限公司 Nano-composite current-conducting electric heating film and production method thereof
CN204993897U (en) * 2015-08-11 2016-01-20 绍兴明透装甲材料有限责任公司 Low-resistance electric heating coated glass

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2768365Y (en) * 2005-01-13 2006-03-29 林正平 Electric heating diaphragm with electric distribution structure
EP2618632A2 (en) * 2010-09-14 2013-07-24 LG Chem, Ltd. Heating element and manufacturing method thereof
CN103477706A (en) * 2011-04-12 2013-12-25 法国圣戈班玻璃厂 Electrically heatable carrier and panel radiator, and method for the production thereof
CN103974471A (en) * 2013-02-01 2014-08-06 Kmt纳米科技（香港）有限公司 Nano-composite current-conducting electric heating film and production method thereof
CN203193915U (en) * 2013-02-20 2013-09-11 廊坊市金色时光科技发展有限公司 Automobile seat and foil-type conductive heating membrane thereof
CN103415092A (en) * 2013-07-11 2013-11-27 九阳股份有限公司 Processing method of thick film heating device, thick film heating container and equipment
CN204993897U (en) * 2015-08-11 2016-01-20 绍兴明透装甲材料有限责任公司 Low-resistance electric heating coated glass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111356253A (en) * 2018-12-21 2020-06-30 绍兴明透装甲材料有限责任公司 Electric heating glass with different complementary heating systems
CN110091832A (en) * 2019-03-20 2019-08-06 广东工业大学 A kind of antifog glass and its manufacturing method

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