With the economic development and the declining air quality, new energy vehicles have become an inevitable trend in future development. The investment of major auto companies and the guidance of national policies have made electric vehicles the darling of the market, and more and more people have begun to choose energy-saving and environmentally friendly electric vehicles as their means of transportation.
Last year, my country’s new energy vehicle sales reached 777,000, and this year’s production and sales volume is expected to exceed the million mark. Although new energy vehicles maintain a trend of rapid development, it is not far from the industrial plan issued by the state that my country will reach There is still a long way to go before the sales of new energy vehicles reach 2 million. In addition, rumors that electric vehicles are not environmentally friendly, new vehicles need to be cycled to 100% for three times, and cannot be charged in rainy days... Such rumors are also restricting the promotion and development of new energy vehicles in the market.
According to a survey conducted by an authoritative organization, 73% of people think that electric vehicles have electromagnetic radiation, and about 37% think that this kind of radiation may even affect human health. There are countless rumors about electric vehicles on the Internet. After the policies, subsidies, and infrastructure construction of new energy vehicles are continuously improved, such rumors about "electromagnetic radiation" have become potential obstacles to the promotion and growth of new energy vehicles.
I want to ask whether electric cars have radiation? The answer is: yes! In fact, electromagnetic radiation is everywhere in our lives. The earth itself is a large magnetic field. The interaction of electric and magnetic fields produces electromagnetic waves. The process of electromagnetic wave energy propagation in the air is called electromagnetic wave radiation. The human body can absorb and resolve electromagnetic radiation within a certain range, so not all electromagnetic radiation is harmful to the human body.
Let's first look at the electronic products around us as a reference for horizontal comparison of electric vehicles. According to calculations by an authoritative organization, in daily life, the electromagnetic radiation of notebook computers is about 10.69μT, the radiation of mobile phones when watching videos is 18.37μT, the CRT TV is 2μT, the LCD TV is 0μT, and the back of the hair dryer is 9.32μT. The socket of the wiring board is 2.97μT, the Siemens refrigerator is 0μT, the rice cooker is 0μT, and the microwave oven panel is 19.78μT (front radiation meter). From the test results, the measurement results of each instrument have a certain relationship with the product brand, measurement time, and location, but the value is roughly the same.
For electric vehicles, taking the common JAC iEV4 and BYD e6 models as examples, the electromagnetic radiation test results of the charging pile are: the electromagnetic radiation of the charging pile supporting the JAC iEV4 is 4.78μT when working, and the charging nozzle is charged with the car. The electromagnetic radiation of the socket is 5.52μT, which is higher than the average value in BYD e6 car, but it is also within the safe value of WHO, and it drops to 0 at 20 centimeters away.
The radiation from the car to the human body is actually during the driving process of the car most of the time. The calculation results show that the average test result of the iEV4 pure electric vehicle is 0.597μT, which is lower than the 2.95μT level of the high-power e6. However, the BYD e6 greatly exceeds the JAC iEV4 regardless of the top speed or the cruising range.
The test results also confirmed that the greater the power of electric vehicles, the greater the electromagnetic radiation. However, both the 2.95μT of BYD e6 and the 0.597μT of JAC iEV4 are much lower than the 100μT electromagnetic radiation warning standards of the International Health Organization (WHO), China and Sweden.
How big is the impact on us?For those of us who don’t understand physics, it’s actually not easy to see. Let’s look at the mobile phone radiation that everyone is exposed to in our lives: electromagnetic radiation 0.20μT when viewing WeChat, electromagnetic radiation when sending WeChat It is 0.45μT, and the electromagnetic radiation when playing video is as high as 19.00μT, which is about 6.44 times that of BYD e6 pure electric vehicles and 31.82 times that of JAC iEV4 pure electric vehicles! It can be seen that although the mobile phone is small, because it has a transmitting function, the radiation is much more powerful than that of a "big" pure electric car!
In fact, the main cause of harm to the human body is "ionizing radiation." Ionizing radiation is electromagnetic radiation with a wavelength of less than 100nm. It is a kind of radiation with short wavelength, high frequency and high energy. The human body can be killed when exposed to this kind of radiation for a few minutes. The prerequisite for generating ionizing radiation is huge energy. The energy produced by new energy vehicles is far below the standard.
In daily life, it is difficult for ordinary people to have the opportunity to be exposed to "nuclear radiation". As for "medical radiation", the operation is completed under a specific process, and the impact is not severe.
As for "radiation" such as mobile phones, microwave ovens, and hair dryers, they are not in the category of "ionizing radiation". They belong to "electromagnetic radiation" or "non-ionizing radiation", and they do little harm to the human body. According to the United Nations International Health Organization's safety standards for electromagnetic radiation and electromagnetic fields, the electric field radiation safety standard is 5000V/m, and the magnetic field radiation safety standard is 100μT. That is to say, as long as the data of ordinary household appliances is lower than 5000V/m and 100μT, their radiation values ​​are all within the safe range.
Tests show that the radiation of electric vehicles is far less than that of a laptop computer. Moreover, the issue of battery radiation has also been taken into consideration in the manufacturing process of new energy vehicles, and relevant protective measures have been taken for the battery packs of new energy vehicles. Take the Tengshi pure electric vehicle as an example. The main driver's radiation is 0.88μT, the co-driver's radiation is 0.85μT, and the rear seats are 0.47μT, 0.43μT and 0.39μT respectively from left to right. Take a comprehensive look at the electric field of each part of the car The radiation is less than 5V/m, and the magnetic field radiation is less than 1μT, which is much lower than the electromagnetic radiation of daily equipment such as mobile phones and laptop computers. Other electromagnetic radiation such as Tesla, BMW i series, Lexus CT series, etc. are also within the safe range.
Editor's comment: When the new energy vehicle policy is gradually being improved and the infrastructure construction is constantly advancing, such rumors about the "electromagnetic radiation" of electric vehicles should no longer become a stumbling block to the development of new energy vehicles!
Glass tube liquid level gauge is a direct reading liquid level measuring instrument, which is suitable for the on-site detection of liquid position in general liquid storage equipment in the process of industrial production. It has simple structure and accurate measurement. It is a traditional on-site liquid level measuring tool. Generally used for direct detection. A needle valve is installed at both ends of the liquid level gauge. When the glass tube is broken due to an accident, the needle valve will automatically close under the pressure of the container to prevent the medium in the container from flowing out.
Marine Glass Tube Level Gauge,Marine Dial Level Gauge,Magnetic Float Level Gauge,Ss Magnetic Float Liquid Level Gauge
Taizhou Jiabo Instrument Technology Co., Ltd. , https://www.taizhoujiabo.com