What is wireless Charge Qi which we can charge just to put?
When we charge smartphone, structure connecting interconnection cable to some kind of power supply apparatuses including AC adapter and portable power charger is common. As well as this method, there is standard called "Qi" (tea) which can be charged from wireless even if we do not connect cable to the body.
Here, let's introduce type of structure of Qi and real battery charger, method of Charge.
About structure and standard of wireless Charge Qi
Qi (tea) is standard that can charge smartphone without connecting cable which is also called wireless Charge and Wireless feeding, non-contact feeding. It was standard that came up for several years, but was not so common because there was little Supported devices.
However, as iPhone 8 and iPhone X supported Qi, have begun to spread at a stretch. Here, let's introduce Qi from various points of view including structure and standard.
Structure of Qi
We think whether people imaging like structure that electricity flies in the air and charges are when we hear with wireless Charge and Wireless feeding. But electricity does not actually fly in the air. Then how can you send electricity?
Qi produces electricity using "Faraday's law of induction". Specifically, coil for receiving is incorporated in coil for the transmission, terminal of side to charge including smartphone in the body of side to send electricity to. When magnetic field (magnetic flux) occurs when we wash down electricity to coil for this transmission, and coil for receiving approaches the magnetic field, induced electromotive force to deny the magnetic field occurs. Qi charges terminal using this induced electromotive force.
As for the fault of this mechanism, position of coil for the transmission and coil for receiving must be near to some extent. Product with much number of coils appears to make up for the fault. But it is necessary to choose product according to budget as many coils are reflected to price.
Standard of Qi
In standard of Qi, "electromagnetic induction method" of "non-emission type" which can feed at near distance is adopted. If it is Charge pad corresponding to Qi standard, we can charge apparatuses such as smartphone corresponding to Qi plan in the same way.
In addition, standard that can feed far has "laser method" of "emission type" "microwave method" "ultrasonic system". It seems to be studied in the future, "we charge while running electric car".
Standard of this Qi becomes International Standard that group devised of wireless Charge called "WPC" (Wireless Power Consortium). We do not read in "cue eye" and the alphabet and pronounce Qi "tea". This tea is how to read Chinese of "mind", and meaning points to "invisible power". In other words, it will be image "pouring power into terminals such as smartphone by invisible power".
There are AirFuel Inductive (old PMA) standard and AirFuel Resonant (old Rezence) standard that group of wireless Charge called "AirFuel Alliance" promotes other than Qi standard.
Type of Qi product
Product of Qi has the same standard, but is divided into some types how you put terminal. Here, we will see how to use Qi product according to type and each Features.
It is pad type that wireless Charge is possible by putting terminals such as smartphone on pad of Dimensions such as coaster. As we can charge just to put on the pad, it is very easy and is type that risk, "position of coil is not correct" is easy to evade. In addition, models who can charge terminal at the same time have of two, and it may be said that it is superior type in versatility and application characteristics.
But the use area of the desk is large as it is type to put on plane. It releases "MP-WQ01BK" which matched mouse pad with Qi battery charger of pad type in ELECOM. When the area of the desk is limited, it will be good to save space using such a product.
The stands type
It leans smartphone, and it is the stands type that charges wireless. The stands type is usable for sense same as the stands which we used when we charge cordless handset of landline. As it is not necessary to be connected, flexibility of design is high and it is easy to see screen of smartphone in Charge and devises, and there is product which did so that there is not sense of incongruity as interior.
The use area is slightly smaller than pad type.
"It puts" terminal, and it is mount type that fixes to stand solidly not one. Procedure to fix terminal to stand is necessary for this type, but is function that rather is necessary with it is the expected scene that shakes while we move car. It is semiautomatic, and there is fixed product if we push terminal.
It may be said that it is main type that charges movement of car in shaking environment basically.
Portable power charger type
There is Qi version of portable power charger to be able to carry outside. As well as normal portable power charger, it will be big merit that wireless Charge is made at place without power supply. Of course it is not necessary to carry cable.
In addition, there is not only Qi but also product to be able to add USB cable. When we may charge terminal which does not support Qi, it is more convenient if we choose type corresponding to both wireless and cable.
The use scene of Qi
Then, according to the use scenes of Qi product, we introduce what kind of how to use there is. In addition, let's explain which type of product it recommends with on this occasion to charge wireless.
Under work such as desks of home and the workplace
When we charge smartphone, most scenes will be desks of home and the workplace. We can cope immediately if put in desk when telephone came and are convenient as we are seen immediately when notice came what kind of contents it is.
For type of product, pad type or the stands type is recommended.
We are going out in business and private
Even if even business is private, there will be case which Charge is necessary for during going out. Of course we do not have any problem if we can charge before going out properly, but may use battery during going out unexpectedly.
In this way, we are reliable if we are more likely to do wireless Charge in whereabouts if we classify portable power charger type into bag.
We are moving by cars
When we move by cars, there will be case which wants to do wireless Charge. For example, there is person substituting Google map for car navigation system recently. In this case it should be movement of short distance, but will continue consuming battery if it is long distance. When it looks like it, if there are any products of mount type, we can prevent situation, "battery is out of in the middle of navigator" as there is wireless Charge while fixing smartphone.
Let's utilize wireless Charge Qi which we can charge without cable
Qi is convenient standard that wireless can charge smartphone just to put. When it is connected in Wired, purpose itself "that it charges" does not change, but it is more comfortable than expected that we forget cable and are snapped, and risk that connector is broken by exclusion and adding of cable disappears. In addition, we can charge without interconnection cable if smartphone of friend and acquaintance is model corresponding to the same Qi standard.
In this way, versatility is high, and please try convenient wireless Charge.