It is not possible to use the same electronic circuits to charge them for a variety of reasons. In terms of the electronics for the process, charging lithium ion batteries is very different to charging Ni-Cads or NiMH batteries. Electronic conditions for lithium ion battery charging It should be remembered that the charging process is not totally efficient - some energy is lost as heat, although efficiency levels of around 95% or a little less are typical. The electrons provided by the external circuit then combine with the lithium ions to provide the stored electrical energy. This process releases the chemical energy that is stored in the cell in the form of electrical energy.ĭuring the charging cycle, the reactions occur in the reverse direction with lithium ions passing from the cathode through the electrolyte to the anode. The ions and electrons then reform at the cathode. The electrons from the ions that have been created flow in the opposite direction, flowing out into the electrical or electronic circuit that is being powered. Internally the anode releases lithium ions in an oxidation process which pass to the cathode. When the lithium ion cell or battery is discharging it provides current to an external circuit. In very basic terms, the charge and discharge of a lithium ion battery is relatively easy to explain. Power tool lithium ion battery being charged Lithium ion charge / discharge chemistry This controls the level of charge, discharge and the rates at which these can occur. As a result, li-ion battery charging is normally undertaken in conjunction with a battery management system. Proper charging of Li-ion batteries enables the best performance and longest operational life to be obtained. If lithium ion battery charging is not undertaken in the proper manner, the battery operation can be impaired and they can even be destroyed - so care msut be taken. To gain the best from them, they must be charged correctly. Lithium ion, Li-ion batteries offer an excellent level of performance. Li-ion technology Types of lithium ion battery Lithium polymer battery Li-ion charging Li-ion advantages & disadvantagesīattery Technology Includes: Battery technology overview Battery definitions & terms NiCad NiMH Li-ion Lead acid Li-ion Lithium Ion Battery Charging For Lithium Ion, Li-ion batteries to operate correctly, they must be charged properly otherwise they do not operate correctly.
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