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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, high room temperature resistivity, limited application range, etc., and achieve uniform heating temperature field. Grading automatic control, fast thermal response, obvious effect

Active Publication Date: 2012-09-19
GUANGDONGSHENG YUCHEN ELECTRONICS & TECH CO LTD
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  • Summary
  • 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
  • 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

The invention discloses a PTC (Positive Temperature Coefficient) rare-earth thick-film-circuit intelligent electric-heating element and a preparation method thereof. The intelligent electric-heating element is characterized by comprising a metal substrate as well as a PTC thick film circuit thermistor and a rare-earth thick film resistance circuit which are arranged on the metal substrate, wherein the PTC thick film circuit thermistor is arranged in a thick film circuit way to be overlapped or positioned in a same plane with the rare-earth thick film resistance circuit to control the temperature of the thick-film-circuit electric-heating element, so that the control precision and sensitivity are improved substantially; or the PTC thick film circuit thermistor can be independently made into the controllable electric-heating element in the form of a thick film circuit. The intelligent electric-heating element disclosed by the invention can be started by low and high voltages as well as alternating and direct currents at present, is small in size, large in surface thermal load, high in thermal efficiency, quick in warm start, excellent in heat-conducting property, strong in thermal shock capacity and easy to process, green, low-carbon and environment-friendly as well as safe and reliable, has a far infrared function; moreover, the temperature fields are uniform and self-controlled level by level; therefore the intelligent electric-heating element is widely applied to series products of novel intelligent electric-heating elements, such as solar cells, wind power cells, lithium ion cells and the like, with new energy requirements.

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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IPC IPC(8): H05B3/10H05B3/12H01C7/02
CPCH05B3/10H05B3/20H05B3/14H05B3/262H05B2203/003H05B2203/013H05B2203/02
Inventor 王克政
Owner GUANGDONGSHENG YUCHEN ELECTRONICS & TECH CO LTD
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