Intelligent electric-heating element with PTC (Positive Temperature Coefficient) rare-earth thick film circuit and preparation method thereof

A rare earth thick film, intelligent electric heating technology, applied in electrical components, heating element materials, electric heating devices, etc., can solve the problems of difficult electric heating field promotion, low component sensitivity, poor manufacturing process, etc., to achieve uniform heating temperature field and graded automatic control , Fast thermal response, compact structure

Active Publication Date: 2014-05-07
GUANGDONGSHENG YUCHEN ELECTRONICS & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, most of the thermistors with (PTC) effect at home and abroad are still prepared by doping BaTiO3 ceramics. Due to its high room temperature resistivity, its application under high current capacity is limited, and its material Its own and process defects lead to congenital problems such as power failure, and the current application range is limited
Positive temperature coefficient PTC thermistor elements are mostly used in the field of microelectronics due to their poor manufacturing process and low sensitivity

Method used

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  • Intelligent electric-heating element with PTC (Positive Temperature Coefficient) rare-earth thick film circuit and preparation method thereof
  • Intelligent electric-heating element with PTC (Positive Temperature Coefficient) rare-earth thick film circuit and preparation method thereof

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preparation example Construction

[0035] 1. Preparation method of a series of rare earth electronic pastes

[0036] 1. Preparation of rare earth medium slurry

[0037] The rare earth medium slurry is composed of solid phase components and organic solvent carriers, and its weight ratio is: 65: 35 ~ 85: 15; solid phase components are: Si0 2 ~Al 2 0 3 ~CaO~B 2 o 3 ~La 2 o 3 Rare earth oxide-based glass-ceramics, the weight ratio is: Si0 2 30 ~ 65%, Al 2 0 3 5~26%, CaO 15~38%, B 2 o 3 2 ~16%, La 2 o 3 0.3~15%. co 2 o 3 0.05~6%. The nucleating agent is TiO 2 1 ~ 10%, ZrO: 1 ~ 10%. The solvent carrier ratio is: butyl carbitol 66-89%, tributyl citrate 5-15%, ethyl cellulose 0.5-10%, hydrogenated castor oil 0.1-5%, lecithin 0.1-5%. Rare earth oxides are; lanthanum, cerium, neodymium, promethium, gadolinium, erbium, scandium, yttrium and terbium oxide. Rare earth oxides can be added with different types and different proportions of rare earth oxides according to the experimental mat...

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Abstract

A PTC rare-earth thick film circuit intelligent electrical heating element and a preparation method. It is characterized in that the intelligent electrical heating element comprises a metal substrate, and a PTC thick film circuit thermistor and a rare-earth thick film resistance circuit which are arranged thereon. The PTC thick film circuit thermistor is superposed on the rare-earth thick film resistance circuit in the form of a thick film circuit or located in the same plane as that of the rare-earth thick film resistance circuit to control the temperature of the thick film circuit electrical heating element to enable the control accuracy and sensitivity to be substantially increased; and can be individually made into a controllable electrical heating element in the form of a thick film circuit. The requirements of startup with both an alternating current and a direct current, uniform gradable self-control of a temperature field, good heat-conducting performance, strong thermal-shock resistance, having a far infrared function, being easy to process, and being capable of wide adaptation to new energies such as solar energy, wind energy, lithium ion battery, etc. can be achieved.

Description

technical field [0001] The invention relates to the technical field of thick-film circuit electric heating elements, and more specifically relates to the field of an intelligent thick-film circuit electric heating element automatically controlled by a PTC thick-film circuit thermistor. Background technique [0002] With the rapid development of electronic technology, the application fields of thermistor are increasing day by day. PTC thick film circuit thermistor is a thick film circuit intelligent electric heating element made of thick film circuit manufacturing technology combined with the unique control properties of thermistor combined with thick film resistance circuit. This theoretical concept "PTC Thick Film Circuit Controllable Heating Element" has obtained a national patent, was proposed as early as 2004, and has been popularized and applied. PTC thermistor thick film circuit not only has the general characteristics of thermistor, but also has unique and excellent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B3/10H05B3/12H01C7/02
CPCH05B3/262H05B2203/003H05B2203/013H05B2203/02H05B3/14
Inventor 王克政
Owner GUANGDONGSHENG YUCHEN ELECTRONICS & TECH CO LTD
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