Wireless charging in electric vehicles
How can wireless charging be applied to electric vehicles? In the following, we will analyze the charging location, charging method and charging battery, and finally propose the specific application method of wireless charging in electric vehicles.
First, the choice of charging location. Wireless charging technology is related to the distance and state of the charger and the charged device, that is to say, the distance between the two cannot be too large and there is no relative movement between them, otherwise it cannot transmit power stably and effectively. Therefore, the charging location can only be the place where the car stays, i.e. garage, parking lot, intersection, etc. The charging device for bus can also be set up at the bus site. Of course, charging stations can be set up in places where conditions allow or beside highways to facilitate the charging of vehicles.
Second, the choice of charging method. From the three charging methods, we can see that the distance required for electromagnetic induction charging is too small, the efficiency of radio wave charging is too low, while the distance and efficiency of electromagnetic resonance charging can meet the needs of battery cars.
Finally, the choice of charging battery. Electric vehicles will be charged at any time in the city, so it is necessary to choose a non-polluting battery with no memory effect for charging.
On the one hand, in the construction of roads and buildings, the electric power supply unit will pre-bury the wireless charging charger under the intersection, the parking space of public parking lot, the parking space of unit or community and the garage according to the planning plan, and connect the charger with the power grid or solar panel; on the other hand, the car manufacturer On the other hand, the car manufacturer should install the wireless charging receiving device at the bottom of the car, and connect with the battery and other equipment; In addition, the relevant departments of the country should unify the frequency of transmitting and receiving signal, so that it can be common.
Wireless charging technology in the application of development should pay attention to the problem
1. The country should come out with corresponding policies to encourage, support and regulate the development of wireless charging vehicles and the construction of charging facilities. An industry or enterprise, especially the development of the industry or enterprise that benefits the country and the people, cannot be separated from the support of the state. Wireless charging is a fledgling field, and its effective development can largely solve a bottleneck in the development of electric vehicles, but because of the huge investment in its research and development, it is all the more necessary for the state to encourage and support it, in order to speed up its research and development process, so that it can be applied as early as possible.
2. Regardless of the final charging method, what kind of battery is used, the state and the local authorities should study the frequency, safety, environmental protection, energy saving, etc., to avoid waste, to avoid adverse effects on human health, to avoid new pollution of the environment, and at the same time, to promote in place, to avoid people's fear of electromagnetic psychology.
3. In practice, as the transmitter is placed underground, attention should be paid to the protection of it.
4. In areas with more rain, in addition to the waterproofing of underground facilities, the waterproofing of the receiving end of the vehicle is also a problem that needs to be considered.
