For Apple Powder, the iPhone 3GS released in 2009 is a very classic model. At that time, it had extremely powerful hardware specifications. So far, many users are still using this phone. On March 10th, a netizen posted that an iPhone 3GS mobile phone had not been used for a long time, but the battery inside the mobile phone began to expand, and finally broke the mobile phone panel, screen and motherboard. (The following figure)
It is obvious in the figure that the battery has expanded.
Expanded battery
According to netizens, this is due to lithium ion polymer batteries, overcharging (greater than 4.2V) or over-discharge (less than 3.0V), short circuit can cause this phenomenon (commonly known as 'swelling belly'). The mobile phone circuit has a charge and discharge protection board, but the protection board is not a panacea. After the belly is swollen, the lithium battery should be wrapped in a fireproof bag and delivered to a special lithium battery recycling point. It is not possible to puncture a sharp object, and the result of the puncture is that it immediately burns and emits a lot of bad smoke. This battery will not explode.
Mobile Asphalt Mixing Plant is a convenient, efficient and mobile asphalt mixture production equipment, which is suitable for all kinds of road construction and maintenance projects. It has the characteristics of strong mobility, quick installation and easy operation, and can provide high quality asphalt mixture for the project and improve the construction efficiency.
Mobile Asphalt Mixing Plant is mainly composed of mixing host, dosing system, fuel system, support device and dust removal system. Among them, the mixing machine is the core part, which is responsible for mixing various raw materials evenly to produce high-quality asphalt mixture. The dosing system is responsible for adding various raw materials to the mixing machine in a certain proportion. The fuel system powers the entire device, usually using diesel or gasoline. The support unit includes four wheels and a suspension system that allows the device to travel and operate in a variety of terrain conditions. The dust removal system is responsible for collecting dust and exhaust gas generated during the production process to ensure a clean working environment and air quality.
The working process of the mobile asphalt mixing station mainly includes the following steps: First, the various raw materials are prepared and added to the mixing machine through the dosing system. Next, the mixer machine starts to work, mixing the raw materials evenly to produce the asphalt mixture. The asphalt mixture is then transported to the construction site for road paving or maintenance. In the whole process, the operation of the mobile asphalt mixing plant is simple and convenient, and it can be quickly deployed and moved, which greatly improves the construction efficiency.
Compared with the traditional fixed asphalt mixing plant, the mobile asphalt mixing plant has the following advantages: First, it has the characteristics of strong mobility and rapid deployment, and can adapt to a variety of complex terrain and construction environment. Secondly, the installation and disassembly of the mobile asphalt mixing plant is very convenient, and the transfer and installation of the equipment can be quickly completed, reducing the construction time. In addition, the operation of the mobile asphalt mixing plant is simple and easy to maintain, reducing the skill requirements of the operator and maintenance costs.
In short, the mobile asphalt mixing plant is an efficient, convenient and mobile asphalt mixture production equipment, which is suitable for all kinds of road construction and maintenance projects. It has many advantages, can provide high quality asphalt mixture for engineering, improve construction efficiency, and has a wide range of application prospects.
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