Lithium iron phosphate battery packs are widely used. Sometimes lithium-ion battery packs will occur leakage and bulging, and the battery bulge and leakage of liquid. What to do? The correct approach should be to use plastic bags or acid-resistant packaging to isolate the battery pack to a professional battery recycling company.

Lithium iron phosphate battery pack bulging causes.

I. Overcharge leads to the bulge

Overcharging will lead to the lithium atoms in the positive material all running to the harmful material inside, resulting in the original entire grid of the positive pole deformation collapse, which is also an important reason for the decline in the power of lithium-ion batteries. In the process, more and more lithium ions in the negative electrode build up, causing the lithium atoms to grow stump crystals and causing the lithium-ion pack to bulge.

II. Bulging caused by over-discharge

SEI film on the harmful electrode material will appear to protect the use of the material structure is not easy to collapse and can increase the cycle life of the electrode material.SEI film is not static. There will be a slight change in the process of charging and discharging. The important thing is that some organic matter will be reversible changes. Lithium-iron phosphate ion battery over-discharge makes the SEI film reversible break ring, protecting the harmful electrode material after the destruction of SEI makes the damaging electrode material collapse, thus forming a bulge phenomenon.

Third, the lithium iron phosphate battery pack manufacturing level of the problem, the electrode coating is not uniform, and the production process is relatively crude.

Fourth, the violent reaction of the short circuit generates a lot of heat, which in turn leads to the decomposition of the electrolyte vaporization, and the battery will bulge.

Lithium iron phosphate battery pack bulge solution

1, please do not continue to use a bulging lithium-iron-phosphate battery pack. Try to replace the new lithium-ion battery pack on time in a bulging situation. Try not to rely on some of the methods taught online to continue to use the battery.

2, usually, do not play with the phone while charging. Regularly adhere to the condition of the battery to avoid dangerous situations.

3, usually, when charging, pay attention to the choice of the charger. For example, the rated charging voltage of the battery is 3.7v, and the limit voltage is 4.2V. As far as possible, do not choose to exceed this voltage charger, can maintain a constant current is best.

4, choose a large manufacturer of lithium iron phosphate battery packs so that the quality is relatively reliable. Necessary, or usually their habits of use on the degree of damage to the battery, should pay more attention.

Lithium iron phosphate battery pack leakage causes

The aging of the sealant leads to cracks in the seal.

Severe overcharging of lithium-ion iron phosphate batteries, mixed-use of different types of lithium-ion battery packs, poor battery gas compounding efficiency.

False leakage is caused by acid splashing out during acid filling.

Usually, the output current is too high, continuous discharge time is too long, and soft pack lithium iron phosphate ion battery temperature rise caused by. Some batteries have been used for a long time at low current and may also leak.

Welding lithium-ion battery pack shell and cap, welding is not solid, not sealed. There is leakage, false welding, welding seams have cracks, cracks, and other problems.

The positive riveting of the cap is not tight, there is a gap, and the elasticity of the insulating gasket is not suitable, not resistant to corrosion, and easy to age.

What can I do about leaking LiFePO4 battery packs?

1, these batteries will be scrapped.

2, the lithium iron phosphate battery leakage sold to the recycling of battery business