Unfettered freedom—— VH "And" wireless charger evaluation

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A major problem that intelligent devices are always difficult to avoid is the endurance. As far as mobile phones are concerned, each mobile phone needs to be equipped with a charger, mainly because the interface is not uniform, especially in the era when Android and Apple were not popular a few years ago, and Nokia and counterfeit phones dominated, basically one mobile phone has one charging interface. Remember ten "Rechargeable artifact" of RMB one by one, one by one USB It's terrible to connect dozens of different lines and interfaces.

With the development of technology, the charging interface of mobile phones has begun to be unified. Basically, Android phones have been unified to micro usb Interface, and although Apple has different interfaces in different styles, it also has its own system. Even so, the charging line that binds people has always been a nightmare for the claw machine party.

When I forget to bring the charging cable and can't find someone to borrow it, I always think how wonderful it would be if all chargers were the same and could be charged as soon as the phone was put out, instead of requiring the charging cable.

two thousand and fifteen The year was a year of rapid development of smart technology products, and some high-end mobile phones represented by Samsung began to gradually add the concept of "wireless charging". No need for charging cable, just put the phone on the charging base, you can easily charge. It is greatly convenient for users to use.

However, even today, wireless charging technology still has great limitations. At present, the most perfect wireless charging technology is inductive coupling technology. It is through the coil integrated on the back of the mobile phone that the magnetic field is generated when the coil is in close contact with the charging base, and the current is transmitted through the interaction of the magnetic field. This kind of transmission has great defects. First of all, the distance must be close to realize charging; The second is the position. The position of the two coils must be accurate before charging.

At present, there are basically three wireless charging standards in the consumer field, including those of the Wireless Charging Alliance Qi 、 4AWP and PMA The latter two have merged and are ready to develop new charging standards.

The author was lucky to get a model based on Qi Standard wireless charger—— VH  And. This is a very artistic wireless charger, which is made of leather and metal, compatible with all supports Qi Standard wireless charging device. Then the author will take you to see how this wireless charger feels when used.

VH The package of the wireless charger and the wireless charger adopts a gray cardboard shell, which is flat like a notebook. The seal adopts a disposable paper tearing design, which can never be recovered after tearing. To be honest, I don't quite understand why such an environmentally friendly design is adopted, which means that the user can only throw away the packaging after opening it, and there is no way to recycle it.

There is a big cartoon on the front of the package Q Mark of six perhaps nine Or letters Q ）It's like scribbling. There should be nothing in the place covered by Lei Feng's logo. There are small letters on the side Gi , that is, "and" in Chinese. There are two larger English words in the lower right corner VH 。

On the back of the package are some specifications, for example, the input is 5V2A And the output is 5V1A , transmission distance is less than or equal to 6mm , charging efficiency is about equal to 75% , product size diameter is eleven Cm, thickness five point five Mm, line length twelve Cm, total weight is one hundred and forty Gram.

Open the package, you can see that there are two circular layouts inside. On the left side is a blue charging base, and on the right side is the charging connection line rolled up. I had to complain about the packaging of this charger again. When I got it, the internal fixed cardboard shell had been completely opened. When the packaging was opened, it was all loose and could be removed directly. Although this kind of paper design looks simple and artistic, we should work hard on the workmanship.

On the lid inside the box, there are some brief introductions of products, such as the design concept of leather and metal, and Qi Charging standards, etc.

The blue disc on the left is the charging base. The leather surface and the metal core look very textured and feel good.

On the back of the charging base, except for a ring of rubber pads, the middle part is all made of metal. It emits silver luster, with input and output voltage parameters on it. Most of the weight of the entire charger comes from this base, which is heavy and heavy.

According to the actual measurement of the author, the total weight of the entire wireless charger plus the charging coil patch is about one hundred and forty-eight point six Gram.

The right side is the connecting line, which is designed as a wide and flat noodle line. It is not easy to tie and is convenient to use. The gray design of wire material also appears to be more artistic.

After all, there are not many devices that support wireless charging at present. What if mobile phones that do not support wireless charging want to use this wireless charger? VH They gave a wireless charging coil as a gift. Generally speaking, the wireless charging coil has two interfaces, corresponding to IOS And Android interfaces. What I got this time is Android micro usb Unlimited charging coil of the connector. The coil patch adopts the same gray color design, which is also made of leather. The double layer leather hides the coil in the middle, which is very thin. It can be installed inside the phone case or directly pasted on the back of the phone.

The Android interface on the coil is very small, and the occupied space is almost invisible when connected to the mobile phone. However, because it is too small and thin, it is always easy to break, but it is still very solid when used.

After all, sometimes you still want to use this interface for wired charging, and this patch is also very simple to remove, as long as you gently clasp the edges of both sides with your nails.

However, the design of this patch is centered, so if the charging interface is designed on the side of the mobile phone like the author's, it will be awkward to use. However, because the flat cable is very thin, a slight twist will not affect it, and it can be used reluctantly.

After installing the patch of the wireless charging coil, the mobile phone will have the wireless charging function. Just put the mobile phone on the charging base, and you can directly charge it.

There is a small led Indicator light: when the chassis is connected to the power supply, the indicator light will be constantly on. When the wireless charging device is placed to start charging, the indicator light will start flashing, indicating that charging is in progress.

Since it is a charging device, users must pay more attention to the charging speed of this wireless charger in addition to whether it looks good and is easy to use. You can guess that the charging speed of the wireless charging device is certainly not as fast as that of the direct plug-in charging, so now you need to know how much slower the wireless charger will be compared with the direct cable charging.

The author uses the same mobile phone for charging test, and the mobile phone is the most popular one recently launched 3D Functional PPTV king7s Mobile phone, battery capacity three thousand six hundred and ten Milliampere. Theoretically, this VH And the output voltage of the wireless charger is 1A , you should be able to rush in every hour one thousand MA, three thousand six hundred and ten Milliampere needs nearly four It takes hours to fill. However, the efficiency of this charger is about 75% , that is to say, it can rush in about every hour seven hundred and fifty Milliampere, that three thousand six hundred and ten To fill milliamperes, it needs nearly five Hours.

When the author uses the mobile phone for charging, the remaining power is 66% , mobile phone prompts and one hour forty-three It's full in minutes. In fact, it has been full for about two It took a little more than an hour to complete the charging.

The author uses 2A The output charging cable directly charges the mobile phone, then three It will be full in an hour. It can be seen that the bottleneck of wireless charger is not only the distance limitation, but also the charging efficiency limitation.

However, wireless chargers are better than wireless chargers. They are more free and unrestrained without the restriction of wire materials. They can be charged as soon as they are put on the base, and can be used as soon as they are picked up. And as long as it's support Qi Standard wireless charging devices can be placed on the base for charging ticwatch The watch can be directly put on and charged, which is very convenient.

The current conversion between the electromagnetic coils will inevitably generate heat, but fortunately, after the author's actual test, the charging is about one When I was young, the heat on the charging base did not exceed forty It is safe.

After the author's experience, this VH The wireless charger is excellent both in appearance design and in use experience. Although the charging speed is slower than that of traditional wire charging, it is really convenient to charge as soon as you put it down and use it as soon as you pick it up. Moreover, it has good compatibility. The wireless charging device in your hand can use this charging base. It is also beautiful to stand alone when not charging, Even as a coaster is a good choice.

Wireless charging technology must be an essential design for future charging equipment. After all, it is just starting, and the cost is not high, and the technology content is not high. It is easy to popularize as a consumer level use. It can be predicted that in the near future, perhaps next year or two, wireless charging technology will be popularized to all rechargeable devices. If one day, wireless charging devices can improve the distance and achieve similar wifi As with the network, charging with signals is really the gospel of technology products. Users will no longer worry about the power loss of their devices and enjoy freedom at any time and anywhere.