The lithium battery swelling you mentioned is caused by overcharging during charging. The internal chemistry of the battery changes and gas is produced. Typically, soft polymer batteries “swell” when overcharged. shell batteries, they will explode. Be careful when using it. It is best not to use cheap chargers. Cheap chargers have a big impact on battery life. It is best not to use a “bulged” battery as it is dangerous and replacement is recommended. This means that this lithium battery will die. This also means that your battery or cell phone is about to “change direction”.
Why do cell phone batteries swell?
Lithium-ion batteries swell, also called swelling, because the positive chemical materials andnegatives they contain are caused by short circuits, excessive current. , and internal perforations. Various reasons such as short circuits cause sudden changes in internal chemical substances, and gases are generated inside due to high temperature. The battery is a highly sealed product. The gas generated cannot be discharged, and this is the only way to do so. this involves expanding the outer shell and deforming it, which caused even greater damage to the gas storage space. The bottom and sides of the battery are thicker and smaller than the front and back sides, so the bulge occurs on the front and back sides.
This type of bulging battery is basically unusable and the charging capacity becomes low. It may be fully charged on a business trip, but it will run out of power on a call, or it will shut down. hasAfter a short period of use, there is power again when I turn it on again.
Of course, after using the battery for a long time, usually one or two years, depending on the quality of the battery itself, it will naturally swell (this is normal), which tells you that It's time to replace the battery.
Reasons why lithium batteries swell
Question 1: Why do cell phone batteries swell from the middle after prolonged use Hello:
Lithium? batteries, use time If it is too long, the positive and negative lithium ions cannot reach the normal ratio, and the remaining parts will repel each other and cause a bulging phenomenon.
Polymer batteries will produce liquid after chemical reaction for too long, causing the battery to swell.
Question 2: Why does the cell phone battery swell? Ifyou do not understand the reason why the battery heats up and expands:
The power consumption of a mobile phone in standby is very low, which means that the equivalent load resistance of its battery is large , so the discharge current is very small, so the battery does not generate heat and the internal consumption of the battery is very low.
The power consumption of a mobile phone is very large when it is waiting for a call or playing a game, which means its battery has a low equivalent load resistance and discharges a large current during the functioning. Once the battery has discharged some of its power, the internal resistance increases. However, the current required for the operation of the mobile phone cannot be reduced. A considerable part of the energy is then consumed on the internal resistance of the battery, thus causing a loss of power. battery forheat, accelerate discharge and degrade the battery. The duration of use is quickly shortened.
The above is the reason why cell phone batteries heat up after prolonged use.
Dangers of heating the mobile phone battery:
1. Long-term heating of the mobile phone battery will cause heating of the internal parts of the mobile phone, which will cause the phone to restart or hang up during a call.
2. Long-term heating of the cell phone battery will increase the heat of the battery itself if it is sealed (NOKIA and the like are not sealed, the battery is directly installed), the battery will do this. cause the interior The air to expand violently, causing the battery to protrude, or even causing the battery to explode.
3. Prolonged heating of the mobile phone battery will speed up the aging process.damage to the mobile phone itself and will shorten its lifespan.
The above is about the damage caused to cell phones by long-term heating of cell phone batteries.
Prevention and solutions to mobile phone battery heating:
1. Prevention methods:
1. When the mobile phone is at normal room temperature , it is normal that the heat does not exceed 60°C, will not damage the battery.
2. Do not use a high current charger for too long. Charging for too long will damage the battery and generate heat.
3. It is better to use original or reputable chargers.
4. If you are not in a hurry to use it, it is recommended to charge it with a cradle charger (slow charging method) so as not to heat up the battery.
5. If you feel that the phone is a little warm when listening to MP3 or chargingz the battery, you can use *#0228# to check its temperature. If it exceeds 60℃, return to sleep mode immediately. or use another battery. If it is charging, unplug the charger immediately.
2. Solutions:
1. If the mobile phone battery is fully charged, there are also solutions. Just use your fingers to find the gap in the battery first (the back of the mobile phone battery is close to the mobile phone charging electrode and is a little soft when pressed), then pierce a small hole with a needle to let the air inside escape.
2. Buy another battery.
Question 3: Why does the cell phone battery swell when left in the phone for a long time? The battery does not swell because it stays inside for a long time? but because the battery cells are broken. Yes,There are many reasons why charging and discharging are not trivial. If you don't wait long, it's possible, no matter what. the battery cell is broken, there is no way to save the battery. You can only replace the battery. Change the battery. I recommend the Hony battery. This brand is almost the same as the original battery.
Question 4: Why do cell phone batteries expand after prolonged use? This is because the battery cells are not good. This does not mean that all batteries will expand. after being used for a long time. All right. The battery will not swell until it reaches the end of its life. If there is a battery phenomenon, one means the battery is defective, and the other means the battery can no longer be used.
Question 5:What is the reason for swollen battery in Apple mobile phone?
Question 6: Why is the cell phone battery swollen, what reason? Can it still be used? Try not to use it
The theory is a bulgeThe battery may explode
And even if it does not explode, on the one hand the standby time will be shortened and on the other hand it will easily deform the rear shell. Nowadays, batteries in the market are not very expensive.
The battery life of a mobile phone is about 500 times that of charging and discharging.
Excessive charge and discharge times, or excessive charge and discharge current will cause bloating. At this point, the internal structure of the battery has been damaged and the standby time is significantly reduced.
Bloating is a good sign. Some batteries simply cannot inflate and exploder.
It is recommended to replace the battery with a new one
The mobile phone repair guide team is at your service
Question 7: Why does cell phone battery expand and explode? . Causes of Cell Phone Battery Explosions:
Some lithium-ion cell phone batteries use liquid electrolytes. The chemical properties of lithium are very active and easy to use. Burn when the battery is charged and discharged, the inside of the battery continues to heat up and the heat generated during the activation process expands and the internal pressure of the battery increases when the pressure reaches a certain level and the outside. the shell is damaged, it will rupture, causing expansion, leakage, fire or even explosion. 2. Classification of mobile phone batteries:
1. According to the different electrolytes used in the blithium-ion batteries, they are divided into liquid lithium-ion batteries (liquefied lithium-ion battery, called LIB) and polymer lithium-ion batteries (polymer lithium-ion battery (PLB for short) or plastic lithium-ion batteries (PLB for short).
2. The positive and negative electrode materials used in polymer lithium ion batteries are the same as liquid lithium ions. The positive electrode materials are divided into lithium oxide. -cobalt, lithium manganate, ternary materials and lithium iron phosphate Materials The negative electrode is made of graphite and the working principle of the battery is basically the same. is the electrolyte. Liquid lithium-ion batteries use liquid electrolytes, while polymer lithium-ion batteries use solid polymer electrolytes instead. This polymer can be in a "dry" state. Ac”.Currently, most of them use polymer gel electrolytes, so most cell phones are safe.
Question 8: The cell phone battery is swollen. This is why the battery ages.
< p> Question 9: The cell phone battery is swollen. What causes batteries to swell? The reason for the bulge: A small amount of gas will be produced inside the battery during the charging process, which is usually absorbed during discharging. Too large charging current and frequent overcharging will aggravate gas production and increase the internal pressure of the battery, resulting in swelling. Slight swelling of the battery is allowed. Avoiding overload is key to reducing swelling. Of course, the quality of cell phone batteries is also very important. Many batteries on the market are now of inferior quality, cThis is why bulges are now appearing. Not surprising either. However, Punofi cell phone security battery is still good in this regard.
Hope this helps!
Question 10: Why do cell phone batteries expand from the middle after prolonged use Hello:
Lithium batteries, yes they are used for a long time? For a long time, there will be positive and negative lithium ions. If the normal ratio cannot be achieved, the remaining parts will push against each other and cause a bulge.
Polymer batteries will produce liquid after chemical reaction for too long, causing the battery to swell.
The reaction that occurs on the positive electrode is LiCoO2=charge=Li1-xCoO2+Xli++Xe (electrons). The reaction that occurs on the negative electrode is 6C+XLi++Xe===. ==LixC6. The total reaction of the battery: LiCoO2+6C=Li1-xCoO2+LixC6 Many materials contained in lithium batteries can undergo violent chemical reactions and release a large amount of thermal energy after contact with water, causing heating and burning. The manganese dioxide contained in the positive electrode of lithium batteries can generate heat when exposed to a small drop of water. When the sulfur chloride in lithium batteries comes into contact with water, it generates hydrochloric acid and sulfur dioxide and releases thermal energy. Several factors make lithium batteries a “fire” in life. For lithium-ion batteries such as mobile phone batteries, due to cyclic charging and discharging, the possibility of micro-short circuits inside the battery increases. Improper use causes high temperature and pressure, causing the element to decompose.trolyte and the diaphragm. break and swell