Does electric car have electromagnetic radiation? Riding electric car can cause hair loss and cancer. It's terrible! 'I once met a pregnant woman who took a taxi. As soon as she saw that I was driving an electric car, she did not dare to get on. She was afraid that the car had electromagnetic radiation, which was bad for the baby in her stomach. "Master Hu of Beijing fang'an Xinyue new energy Taxi Co., Ltd. told reporters.
Recently, when visiting the market, the reporter of NBD automobile (micro signal: nbd-auto) found that there are not a few people who think that pure electric vehicles have electromagnetic radiation, and some people think that long-term driving and riding pure electric vehicles will lead to hair loss and even cancer.
So, does the pure electric vehicle that the country vigorously promotes have electromagnetic radiation? Will its radiation affect human health? Does China have corresponding standards in electric vehicle electromagnetic radiation? In order to solve these problems, a few days ago, the reporter randomly conducted a simple electromagnetic radiation test on four new energy vehicles and one traditional fuel vehicle of four brands on the market, and the test result is satisfactory If you are happy, you will be worried.
The electromagnetic radiation of electric vehicles varies
The four pure electric vehicles participating in the test are Chery Ruihu 3xE, BAIC new energy Ex5, Tesla Model 3 (4WD high-power version) and Xiaopeng G3; the traditional fuel vehicle tested is the 2018 Volvo XC60.
Through the video, we can see that when the electromagnetic tester is close to the instrument panel of Chery Ruihu 3xE, the electromagnetic radiation value of the vehicle increases with the increase of vehicle speed from static to linear acceleration, and the maximum electromagnetic radiation value measured during the whole acceleration process is 1.10 & mu; T. When the reporter's right foot leaves the accelerator, stops accelerating, and the vehicle is in the taxiing state, its electromagnetic radiation value decreases with the speed slowing down.
At the same time, in the process of vehicle acceleration, the maximum electromagnetic radiation value of the co driver's leg area is 0.95 & mu; t, and the maximum electromagnetic radiation value of the whole vehicle appears in the convex position of the rear floor, which is 2.39 & mu; t.
It is worth mentioning that when the vehicle is running normally, the electromagnetic radiation value has become extremely low near the driver's position, and the highest value is only 0.08 & mu; t.
It is not difficult to see that there is electromagnetic radiation in pure electric vehicles, and the value of electromagnetic radiation is directly proportional to the vehicle speed.
For example, for the G3 model of Xiaopeng automobile, under the condition of uniform acceleration, when the electromagnetic radiation tester is close to the center control screen of Xiaopeng G3, the maximum measured electromagnetic radiation value is 1.06 & mu; t, and the electromagnetic radiation value decreases after the vehicle decelerates; while when the vehicle is started and at rest, the electromagnetic radiation value of the co driver's leg area is between 0.92 & mu; t-1.54 & mu; t.
Electric vehicles do have electromagnetic radiation, but this level of electrical radiation is not harmful to human health and can be ignored. Xiaopeng automobile sales staff told reporters: 'before our products are put on the market, we also need to carry out relevant tests. The motor carried by Xiaopeng G3 is IP55, so its safety is absolutely guaranteed. '
In fact, the electromagnetic radiation values of different brands of electric vehicles are not the same. In the test, the reporter found that the electromagnetic radiation level of Tesla Model 3 is better than other tested models.
Under the normal acceleration condition of Tesla Model 3, the electromagnetic radiation of the central control area is basically maintained at 0.06 & mu; t, and the electromagnetic radiation of the rear floor is mostly stable at 0.06 & mu; t; while when the vehicle accelerates rapidly, the measured electromagnetic radiation is 0.6 & mu; t; in the static state after the vehicle starts, the electromagnetic radiation inside the vehicle is basically negligible, and the electromagnetic radiation of the central control panel is 0.35 & mu; t; T. The highest value of the co pilot's leg area is 0.11 & mu; t.
The electromagnetic radiation performance of Tesla Model 3 is very similar to that of Volvo XC60. During the test, the reporter found that when the tester is placed near the Volvo XC60, the maximum electromagnetic radiation value in the car is only 0.07 & mu; t under normal acceleration, which is equivalent to Tesla Model 3.
'before that, some consumers and automotive media had tested Tesla products, and there was no alarm of electrical radiation tester. 'a Tesla salesman told reporters.
Tesla is not the only one whose electromagnetic radiation value is equivalent to that of fuel vehicles. During the test, the reporter found that the new model Ex5 launched by BAIC new energy in January this year, under normal driving condition, the electromagnetic radiation value measured at the position of the instrument panel is only 0.08 & mu; t; under the condition of rapid acceleration, the extreme electromagnetic radiation value measured at the leg area of the co driver is 0.36 & mu; t.
Worry about electromagnetic radiation
"When the electric vehicle accelerates, the magnetic field induction will become stronger when the current is high, and the number on the electromagnetic radiation tester will naturally become larger. There is no radiation in the power battery of electric vehicle. The electromagnetic radiation comes from the current. The current changes the magnetic field through the coil, and the battery will produce magnetic field in the process of charging and discharging, so there will be electromagnetic radiation. Wang Binggang, head of the national new energy vehicle innovation project expert group, said in an interview with NBD automobile (micro signal: nbd-auto).
It is understood that electromagnetic radiation belongs to non ionizing radiation, which is composed of electric energy and magnetic energy transferred by space, and its energy is generated by charge movement.
In daily life, in addition to electric vehicles, computers, TVs, mobile phones, microwave ovens, elevators, security doors and so on will produce electromagnetic radiation.
At present, there is no special electromagnetic radiation standard for pure electric vehicles, but the standard of electromagnetic environment control limit (gb8702-2014) is applied. The calculation of the standard is complex, and it needs to be calculated according to the frequency parameters of the motor itself, which is difficult for non professionals to understand.
At present, the World Health Organization (who) safety standard for magnetic field radiation is 100 & mu; t, so it can be judged that the electromagnetic radiation value of the above electric vehicles is quite a long way from the 'red line'.
"The electromagnetic radiation of pure electric vehicles is very small, and there is basically no problem of excessive radiation. Many experiments have been done. "Wang Binggang told reporters.
However, in a paper entitled "study on the impact of power frequency electromagnetic radiation on primary school students' health indicators" published by Wuhan University of science and technology, the reporter found that: "at present, the electromagnetic field guidelines formulated by the International Committee on non ionizing radiation protection (ICNIRP) are based on acute health effects, not cancer or other health effects. The recommended exposure limits of 50 Hz power frequency electromagnetic field are electric field intensity 4KV / M and magnetic field intensity 100 & mu; t. '
The paper points out that the existing epidemiological studies show that if children are exposed to power frequency magnetic fields with intensity higher than 0.3-0.4 & mu; t for a long time, the risk of leukemia increases by two times. Therefore, some scholars believe that the current electromagnetic field exposure limit is too high and should be revised to reduce the possible health risks. It can be seen that consumers' concerns about electromagnetic radiation from electric vehicles are not groundless.
However, the above criteria of epidemiological studies are 250 times different from those of the World Health Organization (who).
In fact, as early as 2013, Japan's Yomiuri Shimbun reported that the electromagnetic wave from the charger of an electric car may interfere with the pacemaker.
Therefore, it is urgent and meaningful to strictly control the electromagnetic radiation level of electric vehicles.