Lithium Batteries,Lithium polymer Batteries,and LISOCL2 batteries manufacture-VAIMA

Battery Knowledge

1.  What is a battery?

»»Battery is the device that transforms the chemical energy to electrical energy through the chemical reaction between the anode and cathode.

2.  What is the primary battery and secondary battery?

»»The primary battery refers to the battery that can only discharge and is not rechargeable. The secondary battery refers to the rechargeable battery that can be charged and used in duty-circle operation.

3.  What are the main components of battery?

»»The main components are: the positive plate, the negative plate, diaphragm paper, cap, can, and insulating layer.

4.  What is the cycle life of rechargeable battery?

»»When a battery experiences a charge and discharge, we call a cycle or a period. In the stated charge and discharge principles and the capacity decline before a stated standard, the total cycles it can undergo called rechargeable battery cycle life.

5.  What is battery inner impedance?

»»Battery impedance is the resistance when the current flow through an operating cell, in general the internal resistance is included both d.c. and a.c. resistance. For the rechargeable cell resistance is small and electrode is easy to be polarized along with producing a polarization resistance while measure d.c. resistance, the accurate value can't be measured.

6.  What is the memory effect?

»»Memory effect only happens on Ni-CD batteries. As in traditional technology a Ni-CD battery's negative is agglomeration with thick Ni crystal, if Ni-CD batteries are recharged before they have been fully discharged, Ni crystal easily gathers to form agglomeration, which makes the primary discharge platform come into being. The battery stores the platform, which will be considered as the end of discharge for the next cycle even though the capacity decides that the battery can be discharged to a lower platform. The battery will store this process in its memory so during the next discharge, the battery only remembers this reduced capacity. Similarly any further incomplete discharge in each use will aggravate the effect makes lower capacity. The effect there are two methods to remove the effect: firstly deep discharge at trickle current (i.e. 0.1C to 0V), secondly several cycles at high currents (e.g. 1C).

7.  What is "short circuit"? May I short circuit Lithium battery?

»»If the positive and negative terminals come into contact with each other or with a metal object, this can cause a short circuit, generating heat. If the batteries are stacked on top of each other or Mixed, the resulting short circuit can lead to heat generation, leakage, bursting and, eventually fire. Do not short circuit Lithium batteries.

8.  May I apply heat on Lithium batteries or dispose of in fire?

»»If heated to 100°C or more, plastic materials in the battery such as the gasket and separator may be damaged, causing leakage. The heat generated by a short circuit inside the batteries may lead to bursting or combustion. If disposed of in fire, batteries may burn violently.

9.  May I solder Lithium batteries directly?

»»If solder is applied directly to the battery, resin materials in the Lithium batteries such as the gasket and separator may be damaged due to overheating. This can cause leakage, and heat generated by a short circuit inside the battery may lead to bursting or fire. Even if no abnormality takes place immediately after soldering, the resulting leakage and other damage may harm the components attached to the battery over a long period of usage.

10.  May I charge Primary Lithium batteries?

»»When a Primary Lithium battery is charged, gas is generated inside the battery and can result in swelling, heat generation, leakage bursting and fire.