Polymer lithium ion battery cell use and assembly consideration

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

Polymer lithium ion battery is a lithium-ion battery that is gel-like, packaged soft, is often referred to as a soft bag lithium-ion battery in the civilian market, which makes the lithium ion battery cells with ordinary liquid lithium ion batteries. Non-identical places, there are some special precautions that the following precautions may be made to the incorrect approach to the battery cell in the use and assembly process. First, in terms of battery cells, including the protection of aluminum-plastic composite membranes, top sealing edges (pole edge edge edge edges), side seal edge, pole handle, and prevent mechanical impact, short circuit.

1. Aluminum-plastic composite film outer packaging protection: Important is damaged by sharp partial stabbies. To this end, it should be cleaned up in the peripheral environment, prohibiting the sharp component from contacting or colliding with the battery.

When you use it, you can wear a glove to prevent the surface of the finger. 2, the top edge and side edge cover protection: to prevent damage to the top cover and side edge cover, destroy the sealing effect, should prohibit the edge of the bending top and side edge edge; at the same time, the battery design must take reliable insulation isolation. Measures to prevent docking short circuits from negative electrode and aluminum-plastic composite film.

3, polar handle protection: polymer lithium ion battery cell positive electrode lead terminal adopts an aluminum pole handle, a negative electrode leader with a nickel handle. Because the polar handle is thin, bending should be prohibited; at the same time, it should be prevented from being contacted with an aluminum-plastic composite film during the production process, and the ferrule film should be strictly isolated. 4, prevent mechanical impact, such as fall, hit, bending battery and accidentally trampling battery.

5, forbidden to use metal, wire short circuit connection is negative. Second, after a battery is done, the next step is to correctly combine with the outer casing and the battery cells to make it a polymer battery, and the precautions in this process are: 1, housing design: (1), enough Mechanical strength to prevent the battery from being subject to external force mechanical damage, (2), when the battery is mounted into the housing, prevent the sharp edge angle of the outer casing from preventing the aluminum-plastic composite membrane interlayer from being in contact with the outside. Short circuit.

2, the battery can be designed: including the scientific setting of the highest / lowest voltage, overcurrent protection, and battery-composite use need to be filled with battery cells (single battery). 3, the positive aluminum pole handle passes through the nickel strip, and the connection of the battery and the circuit board should be performed using ultrasonic welding or spot welding technology. 4, the reliability positioning of the battery, after the battery is assembled, it should be firmly tightened, not active, so that the entire lithium ion battery structure is in a consolidated state.

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