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Positive temperature coefficient thermistor for car heater and manufacturing method thereof

A technology of positive temperature coefficient and thermistor, applied in the direction of resistors with positive temperature coefficient, etc., can solve the problems of immature high reliability technology and achieve the effect of high life and stable characteristics

Active Publication Date: 2014-06-04
XIAOGAN HUAGONG GAOLI ELECTRONICS
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Problems solved by technology

However, since the PTC heating chip, the core element of the heater, needs low resistance and high reliability, domestic heater manufacturers have not formally contacted or entered the field of automotive air-conditioning heating due to the immature high reliability technology of low-resistance PTC; The main manufacturer of PTC heating devices is catem in Germany. It is an urgent task for the current domestic auto oil hybrid vehicle and pure electric vehicle projects to develop high-performance domestic automotive air-conditioning heaters to replace imported ones.

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  • Positive temperature coefficient thermistor for car heater and manufacturing method thereof

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with specific examples, so that those skilled in the art can better understand the present invention and implement it, but the given examples are not intended to limit the present invention.

[0012] The invention provides a positive temperature coefficient thermistor method for an automobile heater, wherein each component and its mole percentage content are respectively: BaTiO 3 : 64%~84%, PbTiO 3 : 6%~18%, CaTiO 3 : 8%~18%, Y 2 o 3 : 0.15%~0.3%, SiO 2 : 1%~2%, CaF 2 : 0.01%~0.03%, TiO 2 : 1% and MnO 2 : 0.03%. The additive CaF 2 By replacing the O element with F, the diversity of semiconducting substitution positions is increased, thereby improving the stability of the product.

[0013] The invention provides a method for manufacturing a positive temperature coefficient thermistor for an automobile heater, comprising the following steps:

[0014] Step 1: BaTiO with a molar percentage of 64%...

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Abstract

The invention discloses a positive temperature coefficient thermistor for a car heater and a manufacturing method thereof. The positive temperature coefficient thermistor for the car heater comprises following components in percentage by mol: 64%-84% of BaTiO3, 6%-18% of PbTiO3, 8%-18% of CaTiO3, 0.15%-0.3% of Y2O3, 1%-2% of SiO2, 0.01%-0.03% of CaF2, 1% of TiO2 and 0.03% of MnO2. The positive temperature coefficient thermistor is obtained by milling and granulating raw materials, carrying out surface printing and carrying outer silver electrode sintering treatment. The positive temperature coefficient thermistor has the resistance lower than 2-3 ohms and the high stable service life property, for example, 12VDC can reach 1000 hours.

Description

technical field [0001] The invention relates to a positive temperature coefficient thermistor for an automobile heater and a manufacturing method thereof. Background technique [0002] With the gradual improvement of awareness of energy conservation and emission reduction around the world, new energy electric vehicles have become one of the main directions of future automobile development. With the promulgation of relevant national policies on new energy electric vehicles, new energy electric vehicles will be one of the main directions of future automobile development, and PTC heaters use the method of plugging in and generating heat. The best choice for electric vehicle interior heating, and also the necessary equipment for electric vehicle defrosting. However, since the PTC heating chip, the core element of the heater, needs low resistance and high reliability, domestic heater manufacturers have not formally contacted or entered the field of automotive air-conditioning he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/02
Inventor 余勤民邹勇陈剑斌万伟伟孙雨
Owner XIAOGAN HUAGONG GAOLI ELECTRONICS
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