Lithium battery principle, common bad items and reasons

From the perspective of the cooperation between lithium batteries and mobile phones, they are generally divided into external batteries and built-in batteries. This name is easy to understand. The external batteries are installed straight on the back of the hand, such as: MOTOROLA191, SAMSUNG series, etc.; and the built-in battery Just after it is installed in the mobile phone, there is another shell to buckle it into the mobile phone battery, such as: MOTOROLA998, 8088, most of NOKIA models 1. External battery The packaging form of the external battery has two types: ultrasonic welding and buckle : 1.1 Ultrasonic welding shell. The battery shell of this type of package has a bottom shell. The material is generally ABS+PC. The surface shell is generally sprayed. Representative models are: MOTOROLA191, SAMSUNG series. The shell of the original battery is sprayed. After the solution is solved, the long-term use will generally not fray, and some brand batteries or parallel batteries will start to fall off after a few days of spraying the casing. The reason is: the casing of the mobile phone battery is cheaper, and the cost of the spray solution is generally the casing. Several times (better), this solution generally has three processes: spray varnish (priming), spray (form color), and spray varnish (the order should be this, if I remember correctly), and In order to reduce costs, some manufacturers have omitted the first and third processes, so the cost is very low. Ultrasonic welding machine welding is not enough with a good ultrasonic welding machine. Is it possible to weld OK? The material has a lot to do with the parameter setting of the welding machine. The shell is closely related to the doping of the nozzle material of the processing manufacturer, and the parameter setting needs to be explored by yourself. Since it involves some technical data of the company, it is inconvenient to talk about it here. 1.2 Card The principle of the button type button battery is that the bottom shell is designed to form a button type, which is generally one-time. If the user forcibly folds the card after the card is completed, it cannot be restored, but this is not very difficult for the manufacturer. (The card is folded and then opened), its representative models are: Ericsson 788, MOTOROLA V66.2. Built-in battery There are also two types of sealing methods for the built-in battery, ultrasonic welding and packaging label (using the trademark to wrap all the batteries) ultrasonic welding battery The important ones are: NOKIA8210, 8250, 8310, 7210, etc. There are a lot of labeled batteries, such as MOTO998 and 8088, which were very popular in the past two years. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please Contact Delete Previous post: What are the characteristics and advantages of lithium batteries and fuel power batteries?