What are the safety features of Polymer Lithium-Ion Battery?
Publish Time: 2024-10-24
As a type of battery widely used in consumer electronics, electric vehicles, energy storage equipment and other fields, the safety of polymer lithium-ion batteries has always attracted much attention. Compared with traditional liquid lithium-ion batteries, Polymer Lithium-Ion Battery has many unique features in terms of safety.1. Solid or gel electrolytePolymer Lithium-Ion Battery uses solid or gel electrolyte instead of liquid electrolyte in traditional liquid lithium-ion batteries. This feature significantly reduces the risk of electrolyte leakage and reduces the possibility of electrolyte leakage when the battery is physically damaged or short-circuited internally. Solid or gel electrolyte not only improves the mechanical strength of the battery, but also reduces the safety hazards of the battery under overcharge, over-discharge or high temperature conditions.2. Higher mechanical strength and impact resistanceThe outer shell of Polymer Lithium-Ion Battery is usually packaged in aluminum-plastic film, which has higher flexibility and impact resistance than metal shell. When the battery is subjected to external impact or extrusion, the aluminum-plastic film can better buffer mechanical stress and reduce the risk of damage to the internal structure of the battery. In addition, the aluminum-plastic film packaging can also release pressure by expanding and deforming when the internal pressure of the battery increases abnormally, avoiding the risk of battery explosion.3. Built-in safety valveMany Polymer Lithium-Ion Battery designs include a built-in safety valve. When the internal pressure of the battery increases abnormally, the safety valve will automatically open to release excess pressure and prevent the battery from exploding. This mechanism is particularly important in abnormal situations such as battery overcharge, overdischarge or short circuit, and can effectively protect the safety of the battery and the user.4. Lower risk of spontaneous combustion and explosionBecause the Polymer Lithium-Ion Battery uses solid or gel electrolytes, the risk of leakage of its flammable liquid electrolyte is greatly reduced. In addition, the design of aluminum-plastic film packaging and built-in safety valves further reduces the possibility of battery spontaneous combustion and explosion. Under extreme conditions, such as high temperature, overcharge or short circuit, the Polymer Lithium-Ion Battery usually only expands or deflates, and does not explode violently like traditional liquid lithium-ion batteries.5. Higher resistance to overcharge and overdischargePolymer Lithium-Ion Battery generally has better resistance to overcharge and overdischarge. In the case of overcharge, the chemical reaction inside the battery will produce gas, causing the battery to swell. Due to the flexibility of the aluminum-plastic film packaging, the battery is able to safely release these gases without exploding. In addition, many Polymer Lithium-Ion Batteries are also equipped with protection circuits that can effectively prevent overcharge, overdischarge and short circuit.6. High temperature stabilityPolymer Lithium-Ion Battery has better stability under high temperature conditions than traditional liquid lithium-ion batteries. Solid or gel electrolytes have higher thermal stability and can remain stable at higher temperatures, reducing the risk of thermal runaway of the battery. In addition, the design of Polymer Lithium-Ion Battery usually includes a thermal management system that can effectively control the battery temperature and prevent overheating.7. Safety brought by lighter and thinner designPolymer Lithium-Ion Battery can be designed to be lighter and thinner, which not only meets the demand for lightweight design of modern electronic devices, but also improves safety to a certain extent. The thin and light design reduces the volume and weight of the battery, reducing the risk of physical damage or thermal runaway in the device. In addition, the thinner design can better disperse heat and reduce the possibility of local overheating.Polymer Lithium-Ion Battery has many significant features in terms of safety, including solid or gel electrolyte, higher mechanical strength and impact resistance, built-in safety valve, lower risk of spontaneous combustion and explosion, higher resistance to overcharge and over-discharge, high temperature stability, and lighter and thinner design. These features make Polymer Lithium-Ion Battery safer in various application scenarios and provide users with more reliable power solutions.
