Electric vehicle market gradually expands
The problem of difficult charging also follows
especially peak season
"One pile is hard to find" is also common
If it is possible to realize stop-and-go charging and run-and-go charging
Isn't that wonderful?
This is the "wireless charging" I want to talk to you today
Let's see how it can be realized, and what new possibilities are there in the future?
NO.1
What is wireless charging?
Let’s talk about what is wireless charging first?
This is related to the "electromagnetic induction" we learned in our junior high school textbooks
Let a magnet or other source of magnetic field
close to a section of coil with no current
A current is induced in the coil
Generate induced electromotive force by changing magnetic flux
converted into electrical energy through other forms
When we combine the current generated by electromagnetic induction
Boot into the battery and wireless charging is complete
Applied to the automotive field
Set the primary generator coil on the parking space
And let the coil pass high-frequency alternating current to generate a magnetic field
resonant magnetic field
When the vehicle equipped with the receiving coil stops at this position
The vehicle receives energy
To achieve power transfer
NO.2
How many steps does it take to wirelessly charge an electric vehicle?
So, how does wireless charging for electric vehicles develop?
Stop and charge
If you want to say goodbye to the "pile grabbing war" and the shackles of the thread
Wireless charging must realize stop and charge
Park the car on the ground charging launch pad
Receive magnetic field energy conversion to charge the battery
At present, some car companies have tried
Let me explain to you why:
Wireless power transmission technology based on magnetic coupling resonance
Provide high-frequency alternating current to the coil through the circuit on the power supply side
The energy is injected into the power coil after passing through the compensation network
The receiving side converts electric energy to supply different loads
And can stop and charge wireless charging parking space
With driverless technology
It is simply a match made in heaven for liberating car owners
Just imagine
Combination of wireless charging + driverless
Not only liberate the hands but also reduce the "killer"
The car can be used according to the owner's car habits
Using the Internet to drive autonomously to a wireless charging station
Automatically return after fully charged
charge while running
If you don't stop at a specific parking spot
Can it be charged while driving?
This is the dynamic wireless charging technology that allows the car to charge while running
easy to understand
That is, the whole road is a wireless charging device.
Charging the car all the way
The realization principle of this dynamic wireless charging technology is
In the form of a high-frequency alternating magnetic field via a power supply rail under the ground
Transmitting electrical energy to vehicles operating within a certain range on the ground
And then supply power to the on-board energy storage device
That is, laying charging coils under the road
Let the electric car charge while driving
So, do such roads really exist?
certainly! Let's focus on Suzhou
In 2018, the world's first "three-in-one" electronic highway
Appeared in Suzhou Tongli New Energy Town
The whole road is a driverless public bus
All powered by solar energy
Two-way wireless charging
In the case of the popularization of dynamic wireless charging
Electric vehicles can be charged while driving
You can use the surplus battery power to transfer to other devices
Or as an energy storage "tool man" to transmit electricity to the grid
Imagine an electric car that could be turned into a charging station
How much convenience can it bring to life
when our whim
Come and take a walk-and-go trip
car driving on road
Drones accompany cars all the way with full charge
Completely get rid of the regrets that the great rivers and mountains cannot record
The quality of travel photos is up up
NO.3
Overcoming challenges and looking forward to the future
We all understand the technical principles of various wireless charging
but applied in real life
There are still many hurdles we have to overcome
For example, in order to realize stop and charge
Coils that generate magnetic fields and currents are adapted to various environments
Not only to transform various structural forms
But also to overcome the distance, weight and other difficulties
Another example, dynamic wireless charging technology
To overcome the longer transmission distance
Moreover, while establishing a high-frequency strong magnetic field,
Reduce the influence of electromagnetic radiation on the driver
In addition, the cost of construction requires higher "money" ability
Coupled with the influence of special weather such as high temperature, rain and snow
How to ensure the safety of wireless charging
It also requires stricter control
According to global market research firm Markets and Markets
published report
Global Electric Vehicle Wireless Charging Market Size
Compound annual growth rate will reach 46.8%
Global Electric Vehicle Wireless Charging in 2020
Market size of $16 million
Will grow to $234 million in 2027
In addition, the State Council has also planned corresponding policy support
The wireless charging market gradually enters the public's field of vision
It also further promotes the construction of urban green ecological environment
