How to properly use and assemble polymer lithium battery

The polymer lithium battery is a lithium battery whose electrolyte is gel-like and soft in packaging. It is often called a soft-pack lithium battery in the civilian market, which makes the lithium battery cell have a different place from the ordinary liquid lithium-ion battery. Therefore, there are some special precautions. The following precautions should be made regarding the incorrect practices that may occur during the use and assembly of the battery.

First, in the use of batteries, including aluminum-plastic composite film, top sealing edge (pole end edge sealing), side sealing, pole handle protection and measures to avoid mechanical impact, short circuit.

1. Aluminum-plastic composite film outer packaging protection: It is mainly to avoid being damaged by sharp parts. To this end, the battery environment should be cleaned from time to time, and sharp parts should not be touched or collided with the battery. When using it, gloves can be worn to prevent the fingernail from scratching the surface of the battery.

2, top sealing edge and side sealing edge protection: in order to avoid damage to the top sealing edge and side sealing edge, damage sealing effect, it should be prohibited to bend the top sealing edge and side sealing edge; at the same time, the battery core design must adopt reliable insulation isolation Measures to avoid the butt short circuit between the negative electrode and the aluminum-plastic composite film.

3, pole handle protection: polymer lithium battery battery anode lead terminal uses aluminum pole handle, the anode lead terminal uses nickel pole handle. Since the pole shank is thin, the bending should be prohibited; at the same time, the pole shank should be avoided in contact with the aluminum-plastic composite film during the production process, and the ferrule film should be strictly isolated.

4, to avoid mechanical impact, such as falling, hitting, bending the battery and accidentally trampled the battery.

5. It is forbidden to connect the positive and negative poles with metal objects and short wires.

Second, after a battery core is completed, the next step is to correctly combine with the outer casing and the battery protection circuit module to make it a polymer battery. The precautions in this process are as follows:

1. Shell design: (1), sufficient mechanical strength to avoid mechanical damage of the battery core by external force, (2) When the battery core is installed into the outer casing, avoid sharp edges of the outer casing to scratch the battery core; (3) prevent The aluminum-plastic composite film sandwiched pure aluminum was short-circuited by external contact.

2. The battery protection circuit must be designed: including the scientific setting of the highest/lowest voltage, over current protection, and the combination of the batteries requires overcharge and discharge protection of the battery unit (single battery).

3. The transfer of the positive aluminum pole handle through the nickel strip and the connection between the battery core and the circuit board should be carried out by ultrasonic welding or spot welding technology.

4. The reliable positioning of the battery core, the battery core should be fastened and secured in the outer casing after assembly, and will not move, so that the entire lithium battery structure is in a consolidated state.

The page contains the contents of the machine translation.