How is lithium iron phosphate batteries assembled?

lithium iron phosphate batteries, it is to point to use as the anode material of lithium iron phosphate lithium ion batteries. Lithium ion battery anode materials mainly have cobalt acid lithium, lithium manganese acid lithium, nickel, ternary material, lithium iron phosphate, etc. The cobalt acid lithium is at present most of the lithium ion battery cathode material.

Structure and working principle of lithium iron phosphate batteries

The internal structure of LiFePO4 battery as shown in figure 1.On the left is structure of olivine LiFePO4 as the positive pole of the battery, connected to the battery positive electrode by aluminum foil and polymer diaphragm is among, it separates the positive and negative, but lithium ion Li + and electronic e - cannot pass, the right is composed of carbon (graphite) battery cathode, copper foil and negative connection of the battery.Between the top and bottom side is the battery electrolyte battery, the battery by the metal casing airtight packaging.

The article read lithium iron phosphate battery pack loading process

Figure 1 lifepo4 battery internal structure

LiFePO4 battery when charging, the anode of lithium ion Li + through the polymer membrane to the cathode migration;In the process of discharge, the cathode of lithium ion Li + migration through the diaphragm to the positive.Lithium ion battery is due to the lithium ion migration and named after the back and forth during charging and discharging.

The characteristics of the lithium iron phosphate batteries

Efficient output: standard discharge is 2 ~ 5 c, continuous high discharge current can be up to 10 c, instantaneous pulse discharge (10 s) up to 20 c;

Good performance at high temperature, external temperature 65 ℃ when the internal temperature is as high as 95 ℃, at the end of the battery discharge temperature can reach 160 ℃, the structure of the battery safe and in good condition;

Even if the battery internal or external damage, battery not combustion, explosion, security best;

Excellent cycle life, after a 500 - cycle, its discharge capacity is greater than 95%;

Discharge to zero volts and no damage;

Can quick charge;

Low cost;

No memory effect, rechargeable battery under the condition of are often filled with not to put the work, capacity quickly is lower than the rated capacity values, this phenomenon is called memory effect.Nickel metal hydride, nickel cadmium battery is memory, and lithium iron phosphate batteries do not have this phenomenon, the battery no matter in what condition, can use increases with the increasing charge, do not need to first put the recharging.

Small volume, light weight, the same specification of lithium iron phosphate battery capacity volume is one-third the size of lead-acid battery, weight is the 1/3 of lead-acid batteries.

No pollution to the environment, the battery does not contain any heavy metals and rare metals (nickel metal hydride battery of rare metals), non-toxic (through the SGS certification), no pollution, comply with European ROHS, for absolute green battery.But there are a lot of lead in lead-acid battery, if mishandled, after abandoning will form secondary pollution to the environment, and lithium iron phosphate material no matter in the process of production and use, no pollution.

Understand the lithium iron phosphate battery assembly process

lithium iron phosphate battery assembly process

How about the manual welding soft package battery group, demonstration USES is A123 lithium iron soft packages, 20 ah monomer batteries.

1, choose suitable batteries, batteries type, voltage, resistance to match, please keep balance of batteries before assembly.

And punching shear electrode.

Understand the lithium iron phosphate battery assembly process

2, on the well hole distance, the system insulation board.

Understand the lithium iron phosphate battery assembly process

3, for screws, please use the flange nut, prevent the nut off, good screw connection is good, can hold the battery pack.

Understand the lithium iron phosphate battery assembly process

4, connection and welding line, the connection line voltage acquisition (balanced line), not external protection board, avoid accident protection board burn out.

Understand the lithium iron phosphate battery assembly process

5, insulating silicone fixed again, this kind of silica gel in the long run will cure...

Understand the lithium iron phosphate battery assembly process

Forget to do before 6, put protection board, if the balance of batteries, this is the last chance before the battery assembly, can do it through balanced line balancing.

Understand the lithium iron phosphate battery assembly process

7, reoccupy insulation board to fix the whole battery pack, wrapped with nylon tape, nylon tape more endurance, please note that we didn't use the steel material shell, shell steel material is beautiful and strong, but the batteries are hard to guarantee, spent some shell did not handle is likely to cut batteries cause leakage, even cause accidents because of poor insulation.

Understand the lithium iron phosphate battery assembly process

8, and the overall packaging batteries, please be sure to fixed batteries and protection board, our batteries measured 1 m height fell still guarantee the normal work.

Understand the lithium iron phosphate battery assembly process

9, the final packaging is complete, output input adopts silica gel line.Overall is because lithium iron batteries, 48 v20ah battery, battery pack single 9 kg, half of the body weight is the same acid batteries.

Understand the lithium iron phosphate battery assembly process

Understand the lithium iron phosphate battery assembly process

10, tutorials, battery we do after the completion of the inspection, you can meet our requirements.

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