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Electric automobile PTC (Positive Temperature Coefficient) electric heater

A technology for electric heaters and electric vehicles, applied in the direction of ohmic resistance heating parts, heating elements, etc., to achieve the effect of improving operational reliability and overall strength

Inactive Publication Date: 2010-12-01
ZHENJIANG DONGFANG ELECTRIC HEATING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heating system for heating in electric vehicles is also a subject of general concern and research by automobile manufacturers. It is difficult for existing ordinary electric heaters to be directly applied to the air conditioning system of electric vehicles.

Method used

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  • Electric automobile PTC (Positive Temperature Coefficient) electric heater
  • Electric automobile PTC (Positive Temperature Coefficient) electric heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] As shown in the figure, the electric vehicle PTC electric heater includes a square-shaped frame 1 adapted to the air outlet of the automobile air-conditioning system, a plurality of aluminum cooling strips 2 are arranged side by side in the frame, and a plurality of PTCs with flat shells The electric heating tube 3 is clamped between each aluminum cooling strip 2 . The aluminum cooling strip 2 is made of corrugated heat sinks, and the corrugated heat sinks are connected and fixed with the shell of the PTC electric heating tube 3 by brazing. The frame 1 is provided with an automatically recoverable 85°C thermal protector 4 and a 139°C fuse 5 that can be blown over temperature and connected to the power supply circuit of the electric heater. The frame is also provided with a temperature sensor 6 connected to the automobile air-conditioning control system.

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Abstract

The invention relates to an electric automobile PTC (Positive Temperature Coefficient) electric heater for an automobile air conditioner system, comprising a square-shaped frame, a plurality of aluminum heat radiating strips and a plurality of PTC electric heating pipes, wherein the square-shaped frame is adapted to an air outlet of the automobile air conditioner system; the aluminum heat radiating strips are parallelly arrayed in the square-shaped frame; and the PTC electric heating pipes are provided with flat shells and clamped among the aluminum heat radiating strips. The invention has the advantages that the densely-arranged aluminum heat radiating strips and the PTC electric heating pipes can obtain higher heating power in the narrow and small space of an automobile, the aluminum heat radiating strips and the PTC electric heating pipes are closely fixedly connected through soldering so as to be enhanced in the integral strength and be adapted to the bumping and shaking running environment of the automobile, and running temperature can be monitored at real time on the basis of overheat self-protection, therefore the running reliability of electrical heater can be further enhanced by utilizing an automobile running computer system.

Description

technical field [0001] The invention relates to an electric vehicle PTC electric heater used in the vehicle air-conditioning system. Background technique [0002] In fuel vehicles, the heating in the car in winter adopts an independent heat source (fuel oil) heating system or a waste heat type (using engine cooling water or exhaust gas waste heat) heating system. These two kinds of automobile heating and heating systems all need to rely on the engine of the automobile, that is to say, the heating in the automobile can only be implemented when the engine is working, and once the engine stops working, the heating cannot be realized. In addition, the heating efficiency of this heating system is very low, and its structure is relatively complicated, and it takes 6-10 minutes to supply heat after starting the engine in winter. In recent years, due to the requirements of energy saving and emission reduction, electric vehicles have become the development direction of automobile te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/06
Inventor 李文良郑进军
Owner ZHENJIANG DONGFANG ELECTRIC HEATING TECH
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