Why can laptop battery explode
Our clients often receive such advice: Your battery will not explode ? Batteries, as the core of notebook accessories, closely linked with notebook mobility and standby time. Laptop battery explosions occur frequently, the airlines since the early 2008, a total ban on the transport laptop battery, notebook batteries are Scared of getting everyone right. Laptop battery really is a time bomb around it? Let’s analyze the battery cause of the explosion, everyone will be a similar explosion on a relatively objective met.
Notebook computer batteries from the shell, interface,dell Inspiron 1720 batteries and control circuit. From the interface to enter, we first see an important component - batteries. It is responsible for the provision and reserve power required for notebook computers. Came to batteries and notebook computers between the motherboard, which is the most crucial part - control circuit. Its working principle and design are very complex, responsible for controlling the battery at an appropriate time to start and stop charging, control and reasonable charge and discharge current, but also bear the battery capacity display and record the number of charging and discharging responsibilities. Current of the battery temperature is too high or too large, cut off the circuit exceptional circumstances, will provide protection. The quality of the battery basically decided by the control circuit. The following is the battery exploded a few reasons:
1. Batteries internal short-circuit
Batteries itself is not too large currents of protection, if a single or multiple batteries, an internal short circuit in order to make batteries large current discharge. These currents will generate considerable heat, so the dell Inspiron 1721 battery produces heat, and then spread to other body parts. If the body is a plastic material, will be the case in high-temperature deformation and even burning, danger! Qualified in the factory when the batteries are rigorously tested. Battery shell commonly used flame-retardant material, is not easy to directly open flame. Where suspects are generally related to poor quality material.
2. Electric core cable short-circuit
Battery internal structure compact, created an opportunity to Inspiron 2600 battery. Between the batteries used in series and parallel circuits are very dense, and close to the batteries, batteries and a damaged skin lines, or cable off, they begin to “conspiracy” regarding the short-circuit, several batteries, together with a high The current discharge, caused by high heat causing the problems.
3. Control circuit failure
Quietly planning a control circuit, so that the protection of some of their own failure, usually performed using all the normal fullness, charging, the Inspiron 2650 battery abnormalities, high-current discharge cases, deliberately cut off the circuit, the temperature rise fires. Abnormal high current from the host part of the fault, leading to discharge the entire battery pack overheating and fire.
4. Heat and unexpected events
Notebook overheating, fluid erosion caused by external short circuit, was struck by lightning, or abnormal voltage, etc., may suddenly exploded.
Lithium-ion laptop batteries are generally battery life is 300-500 times charge-discharge cycles, the replacement battery how to choose? Battery manufacturers first wife, said: “I am!” Price generally at 800-2000 yuan; neutral batteries raised their hands high: “I am cheap!” Note that the original battery is very expensive, your pricing strategy at the global, neutral Battery cheap, cheap in low-quality materials, such as renovation of shell, used split mechanical and electrical core. Brand of non-original batteries do? Reasonable price, because there’s a global pricing strategy, but definitely cheaper than the neutral because the materials used and the same original genuine battery. Even if the above three kinds of batteries are not going to choose, but also strongly recommends against privately to a non-manufacturer specific repair shop to replace batteries. Fatal! Because laptop batteries using a liquid lithium-ion batteries, because the steel casing used to seal the hard way, the internal pressure of a huge, if the explosion can imagine how destructive.