preface

“… …

Embrace friendship and dreams
Follow the agreement and ride the wind and waves
Start on time hand in hand
On the road of adventure
Energy Sun Energy Moon
There is eternal light with you in the world

You radiate charming light,
You contribute endless energy
Grass under your care
Grow healthily
The clouds are raised by you
Flutter happily
You start my heart
Give me ideas
Let me in your sunshine
Grow up happily
I breathe freely
Absorbing your energy
Enjoy
The light you gave
Breeze, river, grass, cattle and sheep,
Everything tells of your kindness!

… …”

Solar energy is inexhaustible. It is a great gift from the sun to life on the earth. When human beings first lit a bonfire, they began to use solar energy consciously. When science and technology developed to this day, human beings invented solar panels and applied solar energy more directly and efficiently.

This solar mobile power supply, which is being used on the machine trial platform, has a very high-end and atmospheric name "China Aerospace Solar Mobile Power Supply 'Solar Magic Cube'", which is designed and manufactured by Beijing Shidai Minxin Technology Co., Ltd. It is reported that Beijing Shidai Minxin Technology Co., Ltd. is a wholly-owned subsidiary of Aerospace Electronics Technology Co., Ltd. Its products cover the design and manufacturing of chips and modules. This "sun cube", which is produced for safe charging, is one of the good products that I admire.

Appearance show - magic of Blackgold technology

The packaging box of the "Sun Cube" is designed intuitively and concisely, 230 mm long, 150 mm wide, and 30 mm thick. It looks like the size of a book. The main color is white background. Solar Cube means the network term "solar cube". The blue Chinese aerospace logo and the four gilded words "Honorary Product" shine in the light.

The front side lists several features of this sun cube. According to the sample, there are two colors available, one is silver white, and the other is golden yellow.

There is also a logo in the middle of the machine trial. It has white words on a green background and sun lace. If you don't look carefully, it matches the whole box perfectly, just like the original design.

The reverse side is the manufacturer information and product parameter information. The large white space above is more clean and symmetrical.

Just imagine, if the opening and closing mode of the packaging box is designed to turn the pages, it will be more interesting!

The packing box is made of hard material with a thickness of 2mm, which makes the corners of the box very firm. The interior is lined with sponge, which can well cushion the collision of products during transportation.

The box is also very simple, with a product manual and a sun cube embedded in a sponge.

The product manual has been made into a classic book style. After carefully reading it, it is easy to understand the use of the sun cube.

The sun cube I tried is a golden yellow alloy frame with frosted technology. It is full of metal texture, but it is not heavy. On the contrary, it feels light. The dark Kevlar backplane and KEVLAR fiber material are characterized by low density, high strength, good toughness and high temperature resistance, and can be called "armored guards" in military.

The overall design looks like a book, but the opening and closing methods are different. The book is opened and closed by turning pages, while the upper and lower solar panels of the Sun Cube are opened and closed by pulling up and down, with magnetic interface. The series parallel connection of the sun cube becomes very convenient and interesting.

A single line LCD screen is embedded in the middle of the cover spine of Sun Cube, and the logo of China Aerospace on the front Kevlar backplane is very eye-catching. Each of the four corners has a rope hole. When you go out, you can use the rope hole to hang the sun cube beside you, so as to achieve the effect of charging while walking.

The bottom Kevlar backplane indicates that the model of this solar mobile power supply is M5100, manufacturer and output parameters.

The whole panel is 190 mm long, 107 mm wide, only 8 mm thick, and the spine of the book is 20 mm wide. It should be because there is a power conversion control circuit inside. The effective utilization area of Kevlar backplane reaches 185mm × 80mm. On the front, 12 × 2 solar modules are distributed according to the determinant. A solar cube has two panels, which together form 48 solar modules.

Experience show – the stronger the sun, the more energy

Through the appearance, we found that there are two magnetic contacts on the side of the ridge of the Sun Cube, eight magnetic contacts on each of the two solar panels, two on each edge, and the spacing is equal. The spacing between the magnetic contacts on the right side is 99mm, the spacing between the magnetic contacts on the side of the ridge and the magnetic contacts on the left side is 70mm, and the spacing between the magnetic contacts on the upper and lower edges is 42mm.

Through the measurement and comparison of the multimeter, it is found that the alloy material of the Sun Cube is not conductive, and a pair of concave and convex points on the butt surface of the ridge have no electrical level, which only serves as a connection. There is a level difference between two pairs of magnetic contacts on the left and right edges, one is positive and the other is negative.

Multiple sets of solar cells are spliced left and right to achieve the effect of parallel expansion of output current. Multiple sets of solar cells are spliced up and down to achieve the effect of increasing output voltage in series.

It can be seen that the following aspects should be paid attention to when using this set of solar mobile power supply:

1. Be careful not to place the solar mobile power supply on the conductive metal plate to prevent damage to the solar mobile power supply due to the short circuit of a pair of magnetic contacts on the left and right edges.

2. When multiple sets of solar mobile power supply are connected in series or parallel, it is better to carry out the whole set.

3. During the use of the solar mobile power supply, ensure that the solar panel is not bent, and the magnetic contacts are not stained and rusted to ensure that the magnetic contacts are in close contact.

Take a walk outdoors on a sunny autumn day. Take the sun cube to feel the energy of the sun.

After installing the sun cube, the sun shines, and the LCD display on the back shows 0.00A. Plug in my torch as a USB power monitor, and it shows that the voltage output of the Sun Cube is 5.31V.

The voltage increases or decreases with the intensity of the light. When the light is insufficient, the USB port does not output. This is the automatic reset technology.

With the accumulation of time, the record shows the charging voltage, current, quantity of electricity and charging time.

The rope can be hung on the side of the body to realize charging while walking. Because it is vertical, the charging current is not as large as when the front side faces the sun.

In the sunny noon, when charging 50% of the 10000mAH power bank, the voltage is pulled down to 4.82V, and the charging current is about 0.44A. It is difficult to reach a full load of 0.9A, perhaps the angle facing the sun is wrong. However, as an emergency in the field, it is enough.

In a word, the biggest advantage of this sun cube is that it can be used as an emergency charging function in the field, which can realize the pleasure of charging while walking. The disadvantage is that it cannot be used when the sun is not enough. Compared with the normal use of the solar calculator in the daytime, it lacks a large space to be improved. What do you think!

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