Method and device for testing energy consumption saving amount of air conditioner at low temperature applied to pure electric passenger car

The invention provides a method and device for testing the energy consumption saving amount of an air conditioner applied to a pure electric passenger car at a low temperature, and relates to the technical field of air conditioner energy consumption testing. Testing the whole vehicle electric energy consumption and the driving range of the vehicle under the conditions of turning on the air conditioner and turning off the air conditioner respectively so as to obtain first electric energy consumption and low-temperature driving range when the air conditioner is turned on and second electric energy consumption when the air conditioner is turned off; and according to the difference value of the first electric energy consumption and the second electric energy consumption and the influence factor, the saving amount of the air conditioner energy consumption at the low temperature compared with the industry average level is obtained. The invention provides a set of standardized device and method for testing the energ