Safe Use Under Different Environmental Conditions Is Critical

- Aug 18, 2017 -

Polymer battery characteristics with high energy density, more compact, ultra-thin, lightweight, and high security and low cost and other obvious advantages, is a new type of battery. In shape, lithium polymer battery characteristics with ultra-thin features, with the needs of a variety of products, made into any shape and capacity of the battery. The polymer battery can achieve the minimum thickness of up to 0.5mm.

From the structure, the lithium polymer battery full name should be lithium-ion polymer battery, so it seems, lithium polymer battery is actually a lithium-ion battery. Only the biggest difference between the two is the use of its internal electrolyte is different from the use of lithium-ion battery liquid electrolyte, and polymer lithium-ion battery instead of solid polymer electrolyte, this polymer can be solid, but also Is semi-solid (colloidal).

Polymer lithium battery has the following seven major features:

1, no battery leakage problem, the battery does not contain liquid electrolyte inside, the use of colloidal solid.

2, the battery can be bent deformation: polymer battery can be bent about 900 or so.

3, the capacity will be higher than the same size lithium-ion battery doubled.

4, can be made into a single high voltage: liquid electrolyte battery can only be a few batteries in series to get high voltage, polymer batteries.

5, can be made of thin batteries: 6V400mAh capacity, the thickness can be thin to 0.5mm.

6, because of its own liquid, can be made within a single multi-layer combination to achieve high voltage.

7, the battery can be designed into a variety of shapes.

The safe use of polymer batteries under different environmental conditions is critical. In all environmental factors. The temperature has the greatest influence on the charge and discharge performance of the polymer battery. The electrochemical reaction at the electrode / electrolyte interface is related to the ambient temperature. The interface of the electrode / electrolyte is regarded as the heart of the polymer battery. If the temperature drops, the reaction rate of the electrode will drop: Assuming that the voltage of the polymer battery remains constant, the discharge current decreases. The power output of the polymer battery also decreases. If the temperature rises is the opposite. The output power of the polymer battery will rise. The temperature also affects the transmission rate of the electrolyte, the temperature rise is accelerated, the temperature drop is slowed down: the polymer battery charge and discharge performance will be affected. But the temperature is too high. Will destroy the chemical balance within the polymer battery.

After the completion of the assembly of the battery, it will be a charge to activate, we call it into, the proposed temperature of 45 ± 5 ℃.

After the consolidation of a period of time, will carry out capacity testing, is the battery charge. The specified temperature of the capacity test is

35 ± 5 ℃.

The storage temperature of the battery is generally 25 ± 5 ℃ at room temperature, the temperature will affect the activity of lithium ions, the higher the higher the temperature activity, but the temperature exceeds 60 ℃ may be on the polymer battery internal insulation film irreversible damage, thus Causing the battery to be scrapped. The temperature is too low will appear lithium ion activity is too low, resulting in battery capacity can not put out, that is, no electricity. In the northern winter, the indoor full of electricity to the phone but also out of the phone is not the reason for this. But this just back to room temperature will be restored after the impact of the battery is not great. When the battery is used at 35 ℃, the capacity is relatively high, the temperature rises again, the impact on the capacity is relatively small, and the temperature exceeds 60 ℃ may damage the battery, thus affecting the battery life. The temperature is too low, it will lead to lower capacity, that is, some of the power is not released. In general, the normal use of the battery capacity difference is not too large to lithium iron phosphate batteries, for example, at 20 ℃ temperature capacity than the 45 ℃ temperature capacity is only 0.95% lower, less than 1 %.