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
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[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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