1. Metal electric heating film for lithium batteries is the first generation of thin film heating products. It uses film forming technologies such as vapor phase growth to attach conductive metal materials to insulating materials and then coats the metal surface. layer with a layer of insulating material, tightly wrapping the metal layer inside to form a thin conductive film. Once electricity is applied, the internal resistance of the metal generates heat, forming an electrothermal effect. Commonly used metallic electric heating materials include copper and nickel. Different materials have different resistivities, operating voltages and heating powers. Different metal materials match different circuit designs to meet different user parameter requirements. The cChoice of different metal materials will also directly affect the cost of electric heating film.
2. Inorganic electric heating film for lithium batteries. Inorganic refers to inorganic conductive materials, such as graphite, SiC, SiO2, conductive ink, carbon fiber and other conductive silicates, etc. An inorganic electric heating film mixes the above-mentioned inorganic conductive substances with auxiliary materials such as flame retardants and film formers, and applies them together on the insulating substrate to form a conductive film. When a voltage is applied to both ends of the heating film, the conductive layer is actually a semiconductor layer that converts electrical energy into thermal energy.
3. The polymer electric heating film used in lithium batteries involves adding conductive particles to the materialsorganic uxes, processing them into thin film materials and then packaging them, or applying conductive materials to an insulating material base to create a polymer electric heating film used in lithium batteries. organic conductive film, then encapsulated with polymer insulating materials. The general working temperature is not as high as that of inorganic electric heating film. In the organic electric heating film category, silicone heating film, polyimide heating film and PET heating film are all widely used categories.
It should be noted that some inorganic conductive materials are fragile substances at room temperature. For example, SiO2 is the main component of glass. This type of electric heating film should be applied to a rigid substrate and used. as a plate material. The other part is flexible, like ink conductrice and carbon fiber. Inorganic materials are resistant to high temperatures, have a long service life and are easy to obtain. This is a type of heating equipment with excellent performance. However, inability to bend and difficulty in deformation are important reasons that limit the use of inorganic electric heating films. Flexible inorganic electric heating films can be used more widely.
Is it dangerous if the cell phone battery is deformed and bulging?
1. The outlook for lithium batteries is relatively good. The current market is large, the production cost is low, and the technical threshold is relatively low.
2. Piezoelectric sensors come in various product forms, and piezoelectricity is only its principle. Pressure sensors and vibration sensors are all piezoelectric. The technological thresholdThe logic of sensors is relatively high, and the production qualification requirements are very high, including high calibration certification qualifications. Most users have their own fixed brand choices and have high requirements for the continuation of the product series.
Battery swelling is a sign of disposal. It is usually caused by long-term high current discharge or using substandard chargers with voltages above the limit, causing the battery cells to become too hot. The electrolyte vaporizes and presses the outer shell. This is also related to the quality of the battery cells.
Cell phone lithium battery cells are divided into three packaging methods, namely iron shell packaging, aluminum shell packaging and packaging in aluminum blister and packaged itge made of lithium film.When the battery inflates to a certain extent, the case ruptures, releases pressure and leaks electrolyte, resulting in the battery being scrapped.
When the lithium battery encapsulated in an iron shell inflates to a certain extent, the pressure cannot be released. The pressure acts inside the battery, causing serious internal damage and. building up a large amount of pressure until the outer shell inflates. Unable to withstand it, the battery explodes and turns into a miniature grenade, at best, or the machine may be destroyed and people may be killed.
Generally, the batteries used by major brand mobile phones are encapsulated in aluminum shells, and counterfeit products are mainly equipped with iron core lithium batteries with powerful explosive abilities. If LZ usefulise imported products, dispose of the battery as soon as possible.
If your battery is bulged, you can still use it if it's not serious. However, when charging, it is recommended to remove the LZ and use a regular charger to charge. and don't put it on your cell phone. Do not use a universal charger (battery killer) to charge. If the bulge is already evident, simply throw it away and don't use it again.
Battery explosions often occur during the charging process, but it is best to be careful when using it. Always keep the back of the phone facing outward and do not turn on the phone. your chest.