Enertechint Battery Technology Q&A 

 

 

Lithium-ion Rechargeable battery

What is a  lithium-ion Rechargeable battery?

lithium-ion battery or Li-ion battery (abbreviated as LIB) is a type of rechargeable battery in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging. Li-ion batteries use an intercalated lithium compound as one electrode material, compared to the metallic lithium used in a non-rechargeable lithium battery. The electrolyte, which allows for ionic movement, and the two electrodes are the constituent components of a lithium-ion battery cell.

Lithium-ion batteries are common in home electronics. They are one of the most popular types of rechargeable batteries for portable electronics, with a high energy density, tiny memory effect[9] and low self-discharge. LIBs are also growing in popularity for military, battery electric vehicle and aerospaceapplications.[10] For example, lithium-ion batteries are becoming a common replacement for the lead–acid batteries that have been used historically for golf carts and utility vehicles. Instead of heavy lead plates and acid electrolyte, the trend is to use lightweight lithium-ion battery packs that can provide the same voltage as lead-acid batteries, so no modification to the vehicle's drive system is required.

Chemistry, performance, cost and safety characteristics vary across LIB types. Handheld electronics mostly use LIBs based on lithium cobalt oxide (LiCoO2), which offers high energy density, but presents safety risks, especially when damaged. Lithium iron phosphate (LiFePO4), lithium ion manganese oxide battery(LiMn2O4Li2MnO3, or LMO) and lithium nickel manganese cobalt oxide (LiNiMnCoO2 or NMC) offer lower energy density, but longer lives and inherent safety. Such batteries are widely used for electric tools, medical equipment and other roles. NMC in particular is a leading contender for automotive applications. Lithium nickel cobalt aluminum oxide (LiNiCoAlO2 or NCA) and lithium titanate (Li4Ti5O12 or LTO) are specialty designs aimed at particular niche roles. The newer lithium–sulfur batteries promise the highest performance-to-weight ratio.

Lithium-ion batteries can pose unique safety hazards since they contain a flammable electrolyte and may be kept pressurized. An expert notes "If a battery cell is charged too quickly, it can cause a short circuit, leading to explosions and fires".[11] Because of these risks, testing standards are more stringent than those for acid-electrolyte batteries, requiring both a broader range of test conditions and additional battery-specific tests.[12][13][14] There have been battery-related recalls by some companies, including the 2016 Samsung Galaxy Note 7 recall for battery fires.[15][16]

Research areas for lithium-ion batteries include life extension, energy density, safety, and cost reduction, among others.

Lithium Polymer battery Technology leader Enertechint

Lithium ion rechargeable Battery

Lithium ion rechargeable Battery for mobile phone

Lithium ion rechargeable Battery

Lithium ion rechargeable Battery for 18650

Lithium ion rechargeable Battery Pack

Lithium ion rechargeable Battery Pack

lithium polymer battery

What is a lithium polymer battery?

Answer : A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated variously as LiPoLIPLi-poly and others), is a rechargeable battery of lithium-ion technology using a polymer electrolyte instead of the more common liquid electrolyte. High conductivity semisolid (gel) polymers form the electrolyte for LiPo cells that are being used in tablet computers and many cellular telephone handsets. [1]
Lithium Polymer battery Technology leader Enertechint

LiPo cells provide manufacturers with compelling advantages. They can easily produce batteries of almost any desired shape. For example, the space and weight requirements of mobile phones and notebook computers can be completely satisfied. Also, they have low-self discharge rate, which is about 5% per month.[10]

Radio controlled equipment and airsoft

 

3-Cell LiPo battery for RC-models

LiPo batteries have just about taken over in the world of radio-controlled aircraftradio-controlled cars and large scale model trains, where the advantages of lower weight and increased capacity and power delivery justify the price. Test reports warn of the risk of fire when the batteries are not used in accordance with the instructions.[11]

As of mid 2016, LiPo packs of 1.3 Ah exist, providing 95C continuous discharge, and short-time 190C bursts.[12] In March 2017, LiPo packs were available in various configurations, most commonly up to 6400mAh, achieving a maximum 4.2V/cell, for powering certain R/C vehicles and helicopters or drones.[13] Some test reports warn of the risk of fire when the batteries are not used in accordance with the instructions.[14]

LiPo packs also see widespread use in airsoft, where their higher discharge currents and better energy density compared to more traditional NiMH batteries has very noticeable performance gain (higher rate of fire). The high discharge currents do damage the switch contacts due to arcing (causing the contacts to oxidize and often deposit carbon), so it is advised to either use a solid-state MOSFET switch or clean the trigger contacts regularly.

Personal electronics

LiPo batteries are pervasive in mobile phonestablet computerspower banksvery thin laptop computersportable media players, wireless controllers for video game consoles, electronic cigarettes, and other applications where small form factors are sought and the high energy density outweighs cost considerations.

Electric vehicles

Lithium-ion cells in pouch format are being investigated to power battery electric vehicles. While it is possible to use a large number of cells of small capacity to obtain required levels of power and energy to drive a vehicle, some manufacturers and research centres are looking into large-format lithium-ion cells of capacities exceeding 50 Ah for this purpose.[citation needed] With higher energy content per cell, the number of cells and electrical connections in a battery pack would certainly decrease but the danger associated with individual cells of such high capacity might be greater.

Hyundai Motor Company uses this type of battery in some of their hybrid vehicles,[15] as well as Kia Motors in their battery electric Kia Soul.[16] The Bolloré Bluecar, which is used in car sharing schemes in several cities, also uses this type of battery.

Light aircraft and self-launching gliders are being produced such as the Alisport Silent 2 Electro[17] and the Pipistrel WATTsUP.[18] Some larger gliders such as Schempp-Hirth Ventus-2 use the technology for self-sustaining motors[19]

Lithium Polymer Battery

Lithium Polymer Battery for mobile phone

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