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PTC (positive temperature coefficient) heating assembly and automobile defroster

A technology of heating components and heating cores, applied in ohmic resistance heating, transparent/reflective heating devices, electrical components, etc., can solve problems such as increased probability of poor contact, increased insulation resistance, increased risk of breakdown, etc., to eliminate disadvantages Influence, reduce insulation resistance, prevent performance attenuation effect

Active Publication Date: 2015-04-29
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing PTC heater has a conductive adhesive layer between the metal electrode sheet and the PTC ceramic sheet, which leads to continuous performance attenuation during use, increased insulation resistance, increased probability of poor contact, and increased risk of breakdown. The embodiment of the invention provides a PTC heating assembly and an automobile defroster

Method used

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  • PTC (positive temperature coefficient) heating assembly and automobile defroster
  • PTC (positive temperature coefficient) heating assembly and automobile defroster
  • PTC (positive temperature coefficient) heating assembly and automobile defroster

Examples

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Embodiment 1

[0038] In order to solve the problem that the existing PTC heater has a conductive adhesive layer between the metal electrode sheet 2 and the PTC ceramic sheet 1, resulting in continuous performance degradation during use, increased insulation resistance, increased probability of poor contact, and increased risk of breakdown , This example will provide a PTC heating assembly, which will be described in detail below.

[0039] Such as Figure 13 , Figure 14 As shown, the PTC heating assembly disclosed in this example includes a heating core 10, an insulating layer 9 and a metal tube 8; the insulating layer 9 wraps the heating core 10 and is inserted into the metal tube 8;

[0040] The heating core 10 includes two metal electrode sheets 2 and several PTC ceramic sheets 1 placed between the two metal electrode sheets 2;

[0041] The PTC ceramic sheet 1 includes positive and negative electrode layers and a ceramic sintered layer sandwiched between the positive and negative elect...

Embodiment 2

[0063] This example provides an automobile defroster. The automobile defroster is mainly used on the windshield of a vehicle, and is used to remove the frost by heating with hot air when frost is formed on the windshield of the automobile. It generally includes fan, heater, defrosting pipeline and other components. The general working process is that the wind blown by the fan is sent to the defrosting pipeline after passing through the heater, and then evenly blown to the inside of the windshield through the defrosting pipeline to perform panoramic defrosting. frost or defog. The main improvement of this example is: the heater in the automobile defroster adopts the PTC heating assembly provided in Example 1. Because the PTC heating assembly has been described in detail in Embodiment 1, it will not be repeated. At the same time, other components and connection relationships in the automobile defroster are well known to those skilled in the art, and will not be repeated.

[006...

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Abstract

An embodiment of the invention provides a PTC (positive temperature coefficient) heating assembly and an automobile defroster in order to solve the problems that due to the fact that a conductive glue layer is arranged between each metal electrode plate and each PTC ceramic plate of a conventional PTC heater, the performance keeps attenuating in the utilization process, and the insulation resistance, the bad contact probability and breakdown risks are increased. The PTC heating assembly comprises a heating core, an insulation layer and a metal tube, wherein the heating core penetrates through the metal tube after being wrapped with the insulation layer and comprises two metal electrode plates and a plurality of PTC ceramic plates between the two metal electrode plates; a plurality of limiting grooves are formed in each of the two metal electrode plates and correspond to the PTC ceramic plates, and the PTC ceramic plates are embedded into the limiting grooves correspondingly formed in the two metal electrode plates. The PTC heating assembly eliminates adverse effects caused by the conductive glue layers, improves the heat conduction effect, improves the insulation and voltage-resistant performance and is safer and lower in cost.

Description

technical field [0001] The invention relates to the field of heating, in particular to the field of PTC heaters. Background technique [0002] The full name of PTC in English is Positive Temperature Coefficient, and the full name of PTC in Chinese is Positive Temperature Coefficient, which is generally used to refer to semiconductor materials or components with a large positive temperature coefficient. Usually we refer to the PTC positive temperature coefficient thermistor, referred to as PTC thermistor, which has the characteristic that the resistivity increases with the increase of temperature, and is often used as a heating element or sensor, protector or temperature control switch and so on. [0003] PTC heaters are widely used in various fields that require heating. With its stable performance, rapid temperature rise, and little influence from power supply voltage fluctuations, various PTC heater products made have become the most ideal heating materials for metal resis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/32H05B3/84
Inventor 宫清林信平吴辉李晓芳任茂林王书敏吴猛祥邓天有温怀通张伟锋邱红梅
Owner BYD CO LTD
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