Why not buy a pure electric model? Endurance, retention rate is the most commonly talked about two major issues, in addition to the transformation of energy mode also let everyone have a new question - radiation, which involves health issues so that many people are prohibitive, this year we will talk about pure electric vehicle models in the end whether there is radiation? Is the radiation itself exceeding the standard, and will it affect health?
Note: Some of the data and pictures in this article are quoted from the "Summary Report on The Research and Evaluation of Chinese Automobile Consumers"
When it comes to radiation, most people think of Chernobyl and the atomic bomb, and these disasters and major events produced by the war have left a very big psychological shadow on people.
By definition, radiation refers to a part of the electromagnetic wave energy out of the field source to propagate outward, and then no longer return to the field source, any object in nature as long as -273.15 ° C or more will produce radiation, which means that all the items that we can touch in our lives will produce radiation, these items produce electromagnetic radiation, electromagnetic radiation covers all aspects of life, and its harmfulness mainly depends on the size of the energy.
And what most people are afraid of is ionizing radiation, such as nuclear explosions, nuclear leakage produced by high-energy particle streams, excessive radiation will cause a large area of skin burns, leukemia, and even cancer, our most common exposure to ionizing radiation is in the hospital X-ray, flying will also receive a part of the cosmic rays, but the dose is completely within the safe range, the impact on people is almost negligible.
Reflected on the car, the pure electric model itself will definitely become a source of radiation, but the radiation generated must be electromagnetic radiation.
The source of electromagnetic radiation for pure electric vehicle models is mainly a number of high-voltage components and wiring harnesses on the body, such as power batteries, drive motors, power converters, inverters, on-board chargers, distribution boxes, high-voltage wiring harnesses and other components, which will produce high-power, low-frequency electromagnetic interference.
As the most core power source, the transformation of output power during high and low speed conversion will affect the size of electromagnetic radiation. The main power supply line inside the body will also generate a strong magnetic field at high frequency when operating.
The effect of electromagnetic radiation on the human body includes two types of thermal effects and non-thermal effects, of which thermal effect refers to the electromagnetic field causing an increase in the temperature of body tissues, the frequency is only more than 10MHz will produce this effect, if the frequency exceeds 10GHz, this heating effect only appears as a rise in skin surface temperature.
The non-thermal effect is mainly concentrated at a frequency below 100KHz, which stimulates the nerves and muscles of the human body, and even produces a feeling of faint flickering light around the retina field of view under a strong magnetic field.
Electromagnetic radiation is related to electricity, then pure electric vehicles and hybrid models will become the focus of attention, compared to the reference is the traditional fuel vehicle, on this issue CCRT released the "China Automobile Consumer Research and Evaluation Summary Report" gave the answer, CCRT on 42 pure electric vehicles, 20 hybrid models and 38 traditional fuel vehicles tested.
Judging from the test results, the magnetic field radiation value of pure electric and hybrid models is not necessarily higher than that of traditional fuel vehicles, and the radiation value gap between different models is very large.
CCRT is based on the public reference limit in the national standard GB 8702-2014 "Electromagnetic Environment Control Limit" as the scoring standard, and the minimum margin value under driving and charging conditions is scored.
The 7 most representative models were tested and the minimum headroom of the vehicle in the state of uniform speed, acceleration and deceleration was evaluated.
Of the seven models tested, all had a rating of over 80, and 57 percent had a rating of more than 90, all performing well.
The sampling points of the 7 models tested are all footstep areas, and the test state of the vehicle with the smallest margin is relatively large in the acceleration and uniform speed states.
Through the data and the test results of professional institutions, whether it is a fuel vehicle or a pure electric model will produce a certain amount of radiation, in comparison, the radiation generated by the pure electric vehicle model and the fuel model is still very close, to the current test of the seven popular models, are in line with the current standards, people themselves will be in radiation all the time, but put aside the dose to talk about the harm is "play hooligans", so still have to believe in science.