Solar panels have two completely different meanings in reality: one is to collectsolar energyDevice, usually used forsatellite、spacecraftIs also used to installenvironmental protectionType A car roof;The other is forspacecraftThe device that provides power. This power is different from the traditional rocket engine, which needs to use the high-speed jet of some material to generate a reaction force to push the spacecraft.
The basic principle of solar panel in the first sense is to usesilicon(Si) and some metalsphotoelectric effect, convert solar energy into electric energy, and then store it inBatteryChina provides power for satellites, spaceships and electric vehicles.
The solar silicon chip, an important energy power component of Shenzhou VI, is all made ofWanxiang GroupSubordinateWanxiang Silicon Peak Electronics Co., LtdProvided.Shenzhou VI manned spacecraftAfter separating from the carrier rocket and entering the predetermined orbit, a pair of solar panels on the spacecraft unfolded smoothly.Solar panel has two functions of power supply and charging, which is equivalent to a small power station.Before the spacecraft enters orbit, a pair of small solar panels are folded and fixed on both sides of the orbital module, and another pair of large ones are folded and fixed on the bulkhead outside the propulsion module.In the launch phase, in order to prevent them from the effect of the head-on aerodynamic flow, the solar panels are folded and stored in the fairing until the spacecraft enters orbit.The silicon chip on the solar panel is "Wanxiang Manufacturing".
It is reported that since many test instruments and devices on the spacecraft rely on electricity as energy, whether the solar panels can be normally deployed is a key action in the flight of the spacecraft.Although a large number of advanced technologies have been adopted for the solar panels of the spacecraft, due to the large area and relatively complex structure, certain risks will still be faced when the spacecraft is deployed in space.The two pairs of solar panels on the spacecraft were successfully launched, providing sufficient power for the Shenzhou VI manned spacecraft's multi day space trip.
The relevant person in charge of Wanxiang Group told reporters that Wanxiang Silicon Peak Electronics Co., Ltd. is a national priorityHigh tech enterprisesThe silicon single crystal and silicon wafer produced by the company are of reliable quality, stable performancePhotoelectric conversion efficiencyGao, several satellites launched by China and Shenzhou I, II, III and IV spacecraft,Shenzhou V manned spacecraftuse.Launched in September 2008Shenzhou VII manned spacecraftSolar panels are also used.
Solar cells are made by photoelectric effect orPhotochemical effectA device that directly converts light energy into electricity is similar to a solar panel.Solar panel and solar sail are not the same thing. Solar panel is a device to collect solar energy, and solar sail is a spacecraft that uses the light pressure of sunlight to navigate the universe.
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Relying on decades of technology accumulation in China's semiconductor equipment industry, through in-depth cooperation with photovoltaic cell enterprises, and through continuous years of unremitting efforts, ChinaPhotovoltaic equipmentThe enterprise has basically possessed the whole line equipment capability of solar cell manufacturing equipment.In the current mainstream construction scheme of mixing domestic equipment and imported equipment, the number of domestic equipment has accounted for the majority.
At present, China's photovoltaic equipment enterprises have initially been able to supply complete sets of products from silicon material production, silicon wafer processing to the production of solar cell chips, as well as the construction of corresponding pure water preparation, environmental treatment and purification projects. Some products such asDiffusion furnace、Plasma etcher, single crystal furnace, polycrystalline ingot casting furnace, etc. began to export in a small amount, and 8 of the 10 kinds of solar cell production line equipment can be provided, of which 6 kinds (diffusion furnace, plasma etcher, cleaning/flocking machine, quartz tube cleaner, low-temperature drying furnace) have occupied the leading position in domestic production lines, and 2 kinds (tubular PECVD, rapid sintering furnace)It coexists with imported equipment, but its share is gradually increasing.In addition,Full automatic screen printing machine、Automatic sorterFlat PECVD is completely dependent on imports.Laminators and solar energy simulators for module production are widely used in the industry.Among the silicon material processing equipment, the single crystal furnace occupies the absolute dominant position in the domestic market with excellent cost performance ratio and is exported to Asia in batches,Multi wire cutting machineA breakthrough has been made in polysiliconIngot casting furnaceIt has been widely used in domestic enterprises.
In 2008, as a batch of new domestic photovoltaic equipment entered the market in batches and the cost performance ratio of domestic equipment continued to improve, photovoltaic enterprises became more and more aware of domestic equipment.In the first half of 2008, the sales revenue of China's solar photovoltaic equipment reached 769 million yuan, an increase of 80% over the same period of 2007, accounting for 58.6% of the sales revenue of all semiconductor equipment.
