Will the mobile power supply really explode if it is squeezed and collides?

Introduction Will the mobile power supply really explode when compressed and collide? Theoretically it is possible, but the probability is usually not high. The collision causes vibrations or the hull breaks. Vibration causes the pole pieces to dislocate, causing the

Will the mobile power supply really explode if it is squeezed and collides?

In theory yes, but generally the probability is not high.

The collision causes vibrations or the hull is broken.

Vibration causes the pole pieces to dislocate, causing a short circuit through the housing or connecting piece as the electrode expands.

When a lithium battery is pierced by shell fragments, the lithium ions inside will directly react chemically with oxygen in the air and also burn violently.

Why is my Apple battery health deteriorating so quickly?

Since the cell phone battery is a sealed vacuum, if any air leaks escapes, it will naturally explode, or it will explode. I tested it and found that there was something unknown in the battery. The gas will behave like this when it comes into contact with air. Today's cell phone batteries are all lithium batteries. Lithiumis the smallest and most active metal on the chemical periodic table. It is small in size and has high capacity density. The chemical properties of lithium are too reactive. When lithium metal is exposed to air, it will undergo a violent oxidation reaction with oxygen and explode. To improve safety and voltage, scientists invented materials such as graphite and lithium cobalt oxide (as well as lithium iron phosphate, lithium manganate, and ternary materials) to store lithium.

1. Why cell phone batteries have problems

The molecular structures of these materials form tiny storage grids at the nanolevel, which can be used to store lithium atoms. This way, even if the battery shell breaks and oxygen enters, the oxygen molecules will be too large to enter it.he small storage compartments, so the lithium atoms will not come into contact with oxygen to avoid an explosion.

When a lithium-ion battery is charged, the lithium atoms in the positive electrode lose electrons and become lithium ions. Lithium ions swim to the negative electrode through the electrolyte (or polymer), enter the negative electrode's storage compartment, obtain an electron, and are reduced to lithium atoms. When discharging, the whole process is reversed. A separator paper with many pores will be added to the battery to prevent short circuits. A good separator paper can also automatically close the pores when the battery temperature is too high, preventing the passage of lithium ions and avoiding danger.

However, in actual use, when an external short circuit occurs, the battery temperature will increase forment, causing the electrolyte to vaporize, bursting the battery shell, and the lithium catches fire and burns when it encounters oxygen. in the air. If there is no external short circuit, but the battery is not thin enough during manufacturing, small impurities will enter the separator paper, causing an internal short circuit. When the problem is severe, fire and explosion may occur.

Another situation is overload. When overcharged, the negative electrode will produce many needle-shaped metallic lithium crystals. These crystals will also pierce the separator paper, causing an internal short circuit, which could result in a fire and explosion.

In addition, high temperatures, impacts and punctures can damage the diaphragm and even cause lithium to ignite and explode upon direct contact with oxygen in the air.

It should be emphasizedNote that in the event of an internal short circuit, problems often arise suddenly. You accidentally overcharged it last night and an internal short occurred, but the battery heat is slowly building up.

When you put your phone in your pocket at noon the next day, the heat will accumulate to a certain extent and the short circuit will become more serious, causing the phone to catch fire or explode without any warning.

2. How to avoid problems

Usually, the lithium batteries we use include lithium-ion polymer and lithium-ion batteries. If something goes wrong, they will first expand and burst the hull before catching fire. will not explode suddenly and has a certain early warning, relatively safe. We try to buy this kind of battery when we can choose.

For users, it is better to charge directly with a phonemobile phone (even if the battery is removable) and use the original charger for daily charging. Try to avoid using third-party chargers or universal chargers (for removable batteries).

If your phone suddenly becomes very hot and the heat source is the battery, immediately move the phone away from your body to avoid physical damage.

There is currently no way to guarantee 100% safety for lithium batteries. All equipment using lithium batteries can catch fire and explode. What we can do is reduce this probability as much as possible.

If the iPad is folded, will the battery catch fire?

The battery may be caused by frequent charging and discharging.

1. If the number of battery cycles does not exceed 500, but the Apple mobile phone battery status drops to 80% within 1 yearpurchase the mobile phone, it means that there is There is a problem with the quality of the battery of the mobile phone. This situation can be addressed to Apple's official after-sales service for free battery replacement. If the mobile phone has subscribed to the AppleCare plan, you can request battery replacement within two years of using the mobile phone.

2. If the user frequently uses the mobile phone while charging (especially watching videos or playing games), the battery will be overcharged due to frequent charging and discharging, resulting in a sharp decline in its service life . . If the battery condition decreases and the user chooses not to replace the battery, the phone's performance will be limited to ensure the phone's battery life.

3. Additionally, users are recommended to go to the Apple Store or a pointApple authorized repair service to replace the original battery to ensure that the phone can return to normal performance after battery replacement (substandard batteries will affect usage and even cause damage to the phone) Hardware failure happened).

Charging your cell phone

1. Do not charge your cell phone while playing with it.

Cell phone batteries are very sensitive to temperature. your cell phone heats up while charging, please remove it immediately. Playing mobile games while charging will make the phone heat worse. This will not only cause slow charging, but also risk battery explosion...

2. Don't charge your phone overnight

Although today's smartphones can automatically stop charging when the battery is fully charged, it's best toDon't charge your phone all night.

3. Do not wear a mobile phone case

Do not wear a protective mobile phone case when charging your mobile phone. The price of smartphones these days is generally relatively high. So many people worry that their cell phone will fall if it falls on the floor. In order to prevent the phone from being damaged, many people will wear a phone case. Although wearing a phone case has many advantages because the temperature is high. very high when charging, you should remove the phone case and let it disperse.heat to reduce the risk.

Yes. According to information published on the official Apple iPad website, the direct cause of the lithium battery explosion is thermal runaway. The main cause of thermal runaway is various forms of short circuiting. Incentives incread an external short circuit, an internal short circuit, an overload, overheating. , extrusion, etc., so the iPad If bent, the battery may catch fire.

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