Polymer battery and some 18650 battery which is more safe?

Source: 2020 - 04 - 19 at hits: polymer battery and 18650 battery which security? Polymer battery or 18650 batteries is a safe one. Security analysis is explosion-proof aluminum foil 18650 battery, fuse insurance, insurance, pressure power battery negative explosion-proof particles. When pressure: explosion-proof aluminum foil projection, to the top of the fuse. When a lot of pressure: explosion-proof aluminum foil fracture, pressure release, explosion-proof much thinner thickness of aluminum foil aluminum foil packaging than the polymer, the fracture pressure is smaller than polymer aluminum foil packing. Short circuit flow: circuit breaker insurance. Overheating: when the circuit breaker. Discharge: explosion-proof aluminum foil projection, to the top of the fuse, 0 v battery can't charge. 2. Polymer battery safety analysis of whole aluminum-plastic packaging, very few double metal or PTC insurance. When the pressure is bigger, bulging belly, but still can continue to use. When the pressure is high: packaging rupture and release of gas ( Because it is round and full) 。 Short circuit flow, have the insurance form with insurance, no insurance may cause a fire. Overheating: have insurance but no insurance may cause fire. Charging excessive discharge: abdominal distension, easy to cause of packing and explosions. 3. Polymer cells and the safety analysis of 18650 reviews seem almost is just as safe as polymer lithium-ion battery pack, 18650 and 18650 than the polymer is better. 18650, on the other hand, the principle of the frequent explosion is the buttons cover to cover the pressure reducing valve, rust or dirt stuck, unable to release the pressure. The old 18650 unsafe jump after 0 v, can use pin reset the pressure reducing valve, restore output. I remove the new 18650 is made of aluminum foil or similar diaphragm, it is easy to be broken needle, could not be repaired by previous methods. Insurance is a one-off, high-voltage breakdown or over current burns can't recover. Through analyzing the security of the polymer battery and battery 18650, found that explosion is not equal to burn. 18650 and polymer pressure reducer is highly flammable, rotten apples taste with the electrolyte. The owner tested them almost as flammable and alcohol, in addition to the electrolyte has a black smoke. Many of the 18650 explosion is actually burning. 18650 the burning accident probability and polymer basic same, through good protection circuit can effectively avoid the charging circuit.