Lithium-ion battery overcharge, lithium electricity charge protection measures

　　Author ：Iflowpower – Portable Power Station Supplier

Lithium-ion battery overcharge, lithium electricity charge protection measures. Everyone is always talking about the lithium-ion battery should not exceed the charge, don't pay too much. So what will I have after the charge? Lithium-ion battery overcharge is easy to cause the electrolyte analysis in the lithium ion battery to release the gas, resulting in bulging of the battery, and even smokes.

Overlant causes the molecular structure of the battery positive material to be damaged, resulting in a charge. Analysis of lithium-ion battery overcharts Lithium ion battery charging method: fast charge, slow charge, trickle charging, constant current charging, etc. Over-charge means that the voltage is higher than the charging cutoff voltage at the time of charging, and the general lithium-ion battery is 4.

2V. The high voltage determines whether the battery is too charge, and how long does it take to charge?. Generally due to the original power of the battery management chip in the charger or mobile phone, the highest output voltage on both ends of the battery is 4.

2V. Even if it exceeds, there is a protective board built-in lithium-ion battery. It means that the voltage of the battery will never exceed 4.

2V. I will not overcharge for a long time. After the charge is actually a very good understanding, the mobile phone continues to charge the mobile phone lithium-ion battery in the case of displaying power, which we said that the mobile phone is overcharged.

Continuous charging in the case of battery power, it can cause changes in the positive electrode material structure, resulting in capacity loss, and its analysis of oxygen and electrolyte will have severe chemical reactions, the worst result is naturally an explosion. In fact, most of the mobile phones have already have IC protection. The charger itself will also monitor the voltage and current.

In order to protect the use of battery and users, it often uses trickle charging on mobile devices. When charging is made using the USB port, if the loss on the wire is calculated, the USB charging port will discharge with the mobile phone and match the appropriate current, so that the phone can not guarantee the loss of most current due to high current input. Lower battery, such as 10%.

At this time, it is the highest efficiency of charging of lithium ion batteries, and the current has achieved the highest state. With the new capacity of the capacity, the current demanded current will gradually decrease, and the last 10% to 20% of the still is still charged, even the mobile phone will pray for pulse small current to charge, so that the purpose of protecting the battery, this The charging method is also called trickle charging, which is the current mainstream mobile phone charging method to reduce the loss of capacitance upper limit, extend battery life. Regarding the general mobile phone users, it is not a small thing.

The life of the mobile phone lithium-ion battery has directly affected the time you use this mobile phone. If you let go of your mobile phone, you believe that less than a year. Have to die.

Lithium electrical overcharge protection measures to prevent lithium electrical over-discharge or overcharge due to improper use, three-dimensional protection mechanism is provided in the monomer lithium ion battery. The first is to set the safety valve (that is, the air supply hole on the top of the battery), when the internal pressure of the battery rises, the safety valve is automatically opened to ensure the safety of the battery; the second is to select the appropriate partition material, when the temperature rises to a certain value When the microplate on the partition is automatically dissolved, the lithium ion cannot be passed, the internal reaction is stopped; the third is to use the switching element, and when the temperature in the battery rises, its resistance rises, when When the temperature is too high, the power is automatically stopped. Many people think that as long as the lithium ion battery is used correctly during the use of electronic products such as our portable megaphone, so many users will inevitably use improper use of lithium-ion batteries, resulting in unnecessary damage, so lithium ions The battery has three protection mechanisms to handle battery over-discharge or overcharge.

The lithium-ion battery is deeply placed, the greater the loss of the battery, the more ideal state of the lithium-ion battery work is shallow and shallow, the longer the battery life is. Since the lithium-ion battery itself does not preserve, it means that the charge is easy to cause the explosion, so all battery manufacturers will install a circuit control chip in the lithium battery. After the charge, automatically power out immediately.

.