In the high-speed information era, high-tech electronic products such as mobile phones and watches have penetrated into every aspect of people's daily life. Little by little, electronic products have built a bridge between people and between people, people and society, providing great convenience for information dissemination, whether it is home office, long-distance travel or outdoor activities. However, due to the influence of objective constraints and subjective negligence, the phenomenon of power shortage and shutdown caused by insufficient power sometimes puts people in an awkward position. As an emergency need, mobile power supply has solved the power consumption problem well, especially solar mobile power supply. As long as there is sunshine, it can provide reliable power, which is safe, environmentally friendly, economical and simple.

Brand Profile:

Beijing Shidai Minxin Technology Co., Ltd. is a large-scale backbone engineering research and development unit for large-scale and ultra large-scale integrated circuit design, packaging, testing, screening, reliability assessment and failure analysis, specializing in integrated circuit design, development, production and service. Over the years, the company has adhered to the business philosophy of "creating with cores and providing precise core services", focusing on medium and high-end integrated circuit products, relying on abundant aerospace resources and technical advantages to carry out the research and development of digital circuits, analog circuits and mixed signal circuits. Its products have covered such fields as satellite navigation, communications, computers, automotive electronics, consumer electronics, etc. The Solar Cube evaluated this time is a solar portable mobile charging product, which integrates the core power management technology of China Aerospace, and greatly improves the conversion rate of solar energy per unit area.

Details and function display:

Waiting will always bring unexpected surprises. The delayed Sun Cube is packed very carefully and delicately. The inside is padded with soft materials to prevent bumps during carrying and transportation. The environment-friendly paper packaging box is printed beautifully, and the main features and functions of the product are introduced in detail. With the instructions, you can have a general understanding of the product before use.

The solar mobile power supply adopts imported Kevlar backplane, which has high strength, good toughness, high temperature resistance, chemical corrosion resistance and good insulation performance, and can effectively prevent the key and other metal scratches. With 3mm alloy frame and frosting process, it is fashionable, beautiful and comfortable. Champagne gold is high-end and grand, and the logo of "CASC" China Aerospace highlights the brand charm.

The appearance size of 192 × 107 × 9mm is only 210g, small, light and thin, which is only a little larger than the iPhone 7 Plus. The size after double folding and splicing is only 192 × 195mm, which is convenient to carry.

The refined integrated circuit is equipped with independent MPPT power management chip, which strengthens the power tracking technology, reduces the power loss in the circuit, and can effectively improve the solar energy conversion rate per unit area. The unique LCD display can display the current charging state, monitor the charging current output in real time, and help you find and adjust the optimal charging position and direction, so that the charging efficiency can be greatly improved.

There is a USB charging interface on the top of the battery panel, which has three-point high power output and automatic reset functions. During use, it is not affected by the changes of air pressure, light wave and instantaneous occlusion, and avoids repeated plugging and unplugging caused by the temporary occlusion of solar energy or the interruption of charging due to the changes of light, so as to ensure continuous, efficient and stable power supply.

The power of the battery panel is 5.1W, the standard output voltage is 5.2V, and the maximum output current is 0.9A. There are two magic magnetic blocks on the four sides of the panel, and there is an original magnetic splicing socket at the connection. Through the magic magnetic suction technology, multiple solar panels can be connected in parallel and in series to achieve a maximum of 20V in series, 10W in parallel, and 1.8A in current, so as to meet the use requirements of more different equipment.

When the solar cell works, its temperature will be higher than the ambient temperature. The common solar panel works in a step-down mode, and the output power is greatly affected by the temperature change. The solar cube works in a step-up mode, with the maximum operating temperature of 70 ℃ and 80 ℃ in a short time. The output power does not change much with the temperature.

There are four φ 3mm universal hanging holes at the four corners of the veneer, which is convenient for hanging and fixing when traveling.

Charging experience and feeling:

Before use, reset the device first, open the folded battery panel vertically and splice it horizontally, then face the solar panel to the sun, see the LCD display "0.00A", and then complete the reset, and then connect the charging device.

Insert the charging line of the device that needs to be charged, such as the mobile phone or iPad, into the USB interface of the solar mobile power supply. At this time, the LCD screen will display a real-time charging current at the current position. Adjust the orientation and placement position of the battery panel appropriately, and observe the change of the LCD current value. The position when the current display value reaches the maximum is the most appropriate, and the charging effect is the best.

On September 10, we went through the Xiangquan Reservoir in Linluo Mountain of South Taihang on foot. The temperature was about 25 ℃. It was a relatively leisurely route, which was very suitable for solar mobile power experience. Linluo Mountain is not high above sea level, belonging to the extension of Taihang Mountain. It is named after the frequent spring water. There are no tall trees on the mountain, and the sunshine is sufficient all the year round. Especially in the late autumn and winter, the thorns and shrubs growing in the mountain cracks become golden yellow after drying up, and the mountains and fields are like a golden grassland. There are Xiangquan Temple, Liudu Temple, Yuquan Temple, Zhongru Cave and other places of interest on Linluo Mountain. In 1967, Xiangquan Reservoir was built to intercept Xiangquan River.

For the convenience of charging during hiking, the solar mobile power supply is suspended behind the backpack, which can be charged while walking, without delaying the journey, affecting the use of the mobile phone, or worrying about the constraints of power shortage. It is simple and convenient.

But the weather is not perfect. It's cloudy for several days in a row. I thought it would be better today, but the sun showed its head from time to time and hid immediately. The mobile power supply could not get the best light whether it was carried behind the backpack or sat down to find the best position. The charging current was only 0.06-0.09A, almost unable to charge, This shows that the charging effect of solar energy will be limited in rainy days.

The two folded battery panels are spliced through the magic magnetic attraction technology, which is relatively firm in static state, but when hiking outdoors, they want to be charged during the journey. They are suspended at the back of the backpack. Affected by gravity and shaking factors, it is easy to cause the two folded battery panels to crack, which indicates that the magnetic attraction is not strong. Fortunately, I used a thin plastic rope to thread the two folded panels together in advance, It didn't cause the consequences of falling to the ground.

The hole diameter of the hanging hole is only φ 3mm, which is too small. The outdoor elastic hanging ring used at ordinary times cannot be directly hung. Instead, the key ring is used to put it in, and then the hanging ring is used to hang it on the strap of the backpack. To be safe, part of the battery board is inserted into the elastic mesh bag outside the backpack, so that it will not crack or fall again whether walking or running, But the charging effect will certainly be affected.

It finally cleared up on the 12th, the temperature was about 28 ℃. I tried to charge my mobile phone at the riverside outside the unit during the noon break. The charging current was stable at 0.44A, and reached 0.6A instantly, but it could not be stable. The effect was much stronger than that on Sunday, but the sun was not strong enough after rain.

The sunshine in autumn is mild, without the feeling of burning and tingling. It shines through the window, and the sunbathers are lazy and comfortable. I put the mobile power on the windowsill of the office to charge my mobile phone. The charging current is 0.43A, which is not high. Two hours later, the battery of the mobile phone was charged from 13% to 44%. Although the mobile phone was not fully charged, it still gave a satisfactory feeling. After all, the charging current did not reach the maximum.

The solar mobile power supply is not only convenient for outdoor travel, but also can be used on the dashboard of the car as long as there is sunshine in the process of self driving. The charging current has little change with that outside the car, slightly lower, but it can save time and is economical and convenient.

Summary of evaluation:

The solar cube of China Aerospace Solar Mobile Power Supply is made of alloy frame and Kevlar back plate, featuring high strength, wear resistance, fashion and beauty; With unique power management chip, it can effectively reduce power conversion loss, small size, high efficiency, thin and portable; Equipped with USB charging interface and automatic reset technology for charging interruption, it ensures that intermittent charging is stable and reliable without plugging; The magnetic suction interface is simple to splice, can be combined in series and parallel at will, and can output different current and voltage, which can meet the reliable power supply of various equipment. The fashionable appearance, efficient performance, stable technology and convenient control are very suitable for home life and outdoor travel.

Disadvantages and suggestions: 1. There is no portable jacket, which is easy to scratch and is not conducive to outdoor carrying; 2. The attraction of magic magnetic block is too small, which is easy to be disengaged in the dynamic state. Preventive and reinforcement measures should be taken in advance; 3. The hole diameter of the universal hanging hole is too small to use the quick elastic hanging ring when it needs to be hung on the outside of the backpack.

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