Protection device, air conditioning system and protection method thereof

Abstract

The invention discloses a protection device, an air conditioning system and a protection method thereof. The device includes two or more of a reverse connection prevention unit, a voltage detection unit, a current detection unit, a short-circuit protection unit and a vibration detection unit; the reverse connection prevention unit is used for realizing reverse connection protection of an input power supply; the voltage detection unit is used for realizing under-voltage or over-voltage protection of the input voltage of the input power supply; the current detection unit is used for realizing active short-circuit protection of the input current of the input power supply; the short-circuit protection unit is used for realizing passive short-circuit protection of the input current of the inputpower supply; and the vibration detection unit is used for realizing automatic power-off protection of a vehicle which the air conditioning system to be protected belongs to. By means of the scheme,the problem that safety accidents are prone to being caused due to the fact that an electric-driven air conditioner is lack of protection measures can be solved, and the effect of improving the usingsafety of the electric-driven air conditioner is achieved.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning, and in particular relates to a protection device, an air-conditioning system and a protection method thereof, in particular to a multi-purpose protection device, an air-conditioning system and a protection method thereof for a vehicle DC-driven air conditioner. Background technique [0002] The working principle of the traditional fuel vehicle air conditioner is the mechanical transmission type. When the engine is running, the mechanical transmission drives the compressor to run synchronously, so that the refrigerant flows in the internal and external heat exchangers of the vehicle, thereby realizing the temperature control of the cab. However, when the vehicle stops, the engine must run at idle speed to drive the compressor. At this time, the engine operation efficiency is low, energy consumption is high, and the cost is high, and long-term idle speed has an impact on the life of the eng...

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Problems solved by technology

[0005] The object of the present invention is to provide a protection device, an air-conditioning system and a protection method thereof in view of the above-mentioned defects, so as to solve the problem that electric-driven air-conditioners are prone to safety accidents due to the lack of protection measures, and to improve the use safety of electric-driven air-conditioners Effect

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