Technical Full Description: Why is the lithium ion battery explosion news constantly

　　Author ：Iflowpower – Portable Power Station Supplier

The use of lithium-ion batteries in life is large, and it is important to use the wide use of smart phones, wear equipment, electric bicycles and new energy vehicles. For those who want to use batteries, lithium-ion battery explosions such as tips, lithium-ion batteries Continuous, but often contain a lot of misleading information. In this article, we started from the simple use of lithium-ion batteries to complicate.

The amount of battery performance is good, there are several important indicators: one, charge and discharge rate:, the higher the better“C is a dedicated symbol of describing the battery charging current magnitude. 1C discharge represents the battery from full of electricity to the empty current size within 1 hour. The iPhone6 ​​battery capacity is 1810mAh, then the battery's 1C discharge current is 1.

81 amps; each battery capacity used in BYD E6 electric vehicles is 200AH, then this battery 1C discharge current is 200 amps. A battery is discharged with high magnification, and the energy that is usually released is less than the low level. The amount of power discharged from the above discharge ratio can be seen from the above-view detection.

This power lithium battery uses 10C discharged energy of 1C discharged from 85%, using 20C discharged energy only 70% of 1C discharge. Second, the number of charge and discharge cycles:, more than 500 times is the common value of lithium-ion batteries, according to the number of lithium-ion batteries made from different materials from 300-3000 times. The detailed meaning of this value may be slightly different, which can be roughly understood as: according to the charge and discharge rate specified by the manufacturer (such as 1C discharge, 0.

3C charge; charge by 0% to 100% each time, this cycle) After 500 cycles, the battery capacity was originally 80%. The relationship between charge and discharge and use habits is too big, we will take a few examples. 1.

The influence of charge and discharge intensity on the number of cycles is marked: each time it is charged to 100%, 1c put, 0.3C charge, 500 capacity attenuation to 80%, this is the most stringent detection cycle, also Can not be so strict, see if the loop of each electricity is 25% -75%, 1c put, 0.3C charge, 2000 capacity attenuation to 80%, if the cycle of each power is 50% -100%, 1c put, 0.

3 charge, 1800 capacity attenuation to 80% 2, shallow charge-free lying on life affects factory label: 1C, 1C, 0.3C charge, 500 times after 500 times To 80%, it is the most stringent detection cycle, or it can not be so strict. Look at the loop of each power below 25% -75%, 1C, 0.

3C charge, 2000 capacity attenuation to 80% each time The circulation of the electricity is 50% -100%, 1c, 0.3, 1800, capacity attenuation to more than 80%, two examples can be seen that the magnification of the charging is smaller, the more contribute to the life, and the shallow charge is also Good life. Third, internal resistance:, the smaller, this parameter varies with load, temperature and other factors change, with the battery life, internal resistance is gradually increased.

The smaller the internal resistance, the more high-magnification charge and discharge, the general battery internal resistance of 18650 is about 50m & or so, the power-based 18650 battery is about 15m & left and right. Want to know more about the internal resistance to measure the dedicated equipment, the general us do not work. Tools that measuring the internal resistance of the battery, the battery consistency uses the same material, the same process, the battery, the higher the consistency, the better, the better, the better.

This is very important to make a large-scale component of the battery pack, the greater the size of the battery pack, the higher the consistency requirements. In the following, we will follow the difficulties of use: 1, mobile phone, tablet, lithium-ion battery 2, laptop and mobile power supply, lithium-ion battery 4, electric car in electric bicycles The lithium-ion battery parsed some knowledge, this paging is the battery size from small to large. I.

Why is the Lithium-ion battery in the mobile phone, tablet, and wear devices, say this are the easiest? Because these devices only have a lithium-ion battery, and it is basically a three-dimensional ion battery. Three yuan means three elements: nickel, cobalt, manganese, this lithium-ion battery positive material Li (NICOMN) O2, not identical, will adjust the ratio of three elements based on use requirements. First, the battery used in the charge and discharge rate in digital devices is usually very low.

It is difficult for you to use the full-electric mobile phone to automatically shut down within an hour? Nobody will design a digonogram for 1 hour. At least 3 hours can be done, so the discharge magnification of the battery can meet the demand, the charging requirements are often very low, usually 3-4 hours of digital equipment can accept, so charging the battery on the battery Also 0.3c.

Regardless of domestic or Panasonic, the imported lithium-ion battery and 1C discharge, 1C discharge is the minimum specification, and the requirements of digital devices are far lower than the universal standards in the battery industry. The basic indicators that the charging magnification and the battery industry can do are roughly equivalent. If there is no special design, it is not worried.

OPPO's battery flashchaholds, the recent requirements of charging, the recent mobile phone industry has raised the feature of fast charge in OPPO, and actually puts a special demand for battery manufacturers. For the latest N3 of OPPO, VOOC Flash members promised that the amount of 75% of the electricity was 30 minutes. This is a charge current of 1.

5C. It is 10 times that of the general mobile phone battery, and N3 sells 3999 yuan. It is also reasonable.

At least this battery is more than one, twice. .