New Lithium Ion Batteries With Industry's Highest Level of Energy Density

Dec 09, 2004
New Lithium Ion Batteries With Industry's Highest Level of Energy Density

Sony Corporation announces the new line-up of lithium ion batteries, with industry's highest level of energy density, responding to the needs for high capacity and large current in secondary batteries for mobile products. Shipment will start from December 2004 onwards.

Accomplishment of higher capacities in secondary batteries continue to be required from the market, due to higher performance and enhanced features in mobile products such as note PCs, digital video cameras and mobile phones. At Sony, commercialization of the world's first high power density, small size, light weight and long life lithium ion battery was announced in 1991 and, in 1999, lithium ion polymer battery with flexibility in shape and enhanced safety was announced, further responding to such needs. As a result, the world-wide market size of lithium ion batteries (including lithium ion polymer batteries) has grown to a market of 1.2 Billion units.

In the cylindrical lithium ion battery and the lithium ion polymer battery announced today, industry's highest level of energy density has been accomplished, enabling long hours of operation in mobile products.
In the cylindrical lithium ion battery, , in a cylindrical standard size of diameter 18mm and height of 65mm standard size, maintaining the same level of charging/discharging characteristics, industry's highest level of high capacity with 2550mAh (which is 6% increase from the conventional battery) has been accomplished, further adding power (i.e. "Stamina") to the operation of note PCs and digital video cameras requiring high power.
In the Lithium ion polymer battery, , characteristics such as high freedom in the ease of product design (in which the battery is to be used) and high level of safety from the polymer construction have been maintained and 830mAh (9%increase from Sony's conventional model, with the same size) have been realized, supporting long hours of operation in small portable products such as mobile phones.

In addition, targeting the expansion of business in the mobile phone market as well as expansion of lithium ion battery market, new models, the S Pack and V Cell, VT Cell Series are introduced.
S Pack is a lithium ion polymer battery pack dedicated to mobile phone use, where high efficiency is realized in a limited spacing from the convergence of the two technologies, lithium ion polymer and packaging.
In the V Cell and VT Cell Series, the challenge of large current discharge has been accomplished, enabling use of lithium ion batteries in power tools, cleaners, motor assisted bicycle where lithium ion batteries were not used in the past, leading to market expansion of high-power cylindrical lithium ion batteries.

Sony will continue making progress on technology development of batteries with respect to various aspects, such as safety, reliability in high performance, high capacity and consciousness to the environment, and by introducing new lithium ion battery line-up Sony will target to expand its battery business as well as the market.

• Main Characteristics of industry's maximum capacity Cylindrical Lithium Ion (G8 Series)
From the change to 'Can' and the cathode structure, high level of charging has become possible, leading to 6% increase* in capacity compared to conventional battery. Also, due to the fact that the change is focused on structural changes, the curve of discharge is negligible compared to the conventional cell, enabling usage of the in the same battery pack as the conventional one.
*2550mAH (comparison with conventional cell:2400mAH)

• Main Characteristics of industry's maximum capacity Lithium Ion Polymer (A8 Series)
By slimming of the external structure, 9% increase of the capacity has been accomplished, compared to the conventional battery. As it is of a higher capacity when compared to a same size rectangular lithium ion battery, it is appropriate for new generation mobile phones for multimedia purposes.
*830mAh (comparison with conventional same size battery : 760mAh)

• Main Characteristics of New Concept Battery Pack (S Pack)
Utilizing the characteristics of lithium ion batteries (no leakage, less swelling), the battery pack has been simplified, reducing the number of parts. Also, by using a stronger external film as it is as the exterior pack, maximum space efficiency has been achieved in the final products, which is the battery pack.

• High power Cylindrical Lithium Ion battery (V Cell, VT Cell Series)
By using Nickel/Manganese mixture in the positive electrode, stability in high temperature conditions have been achieved, also achieving safe usage with high level of current, this being the characteristics of V/VT series. By the combination with high-voltage, which is the characteristics of lithium ion batteries, usage in the high-power output application field (such as power tools, cleaners, motor assisted bicycles) will be ideal, where conventionally Nickel-Cadmium, Nickel-Hydrogen batteries were used. In the 18650V cell, maximum output of 10A, and in the 6650VT cell, maximum output of 50A have been achieved.

Explore further: Finalists named in Bloomberg European city contest

add to favorites email to friend print save as pdf

Related Stories

Tesla delivers first China cars, plans expansion

20 hours ago

Tesla Motors Inc. delivered its first eight electric sedans to customers in China on Tuesday and CEO Elon Musk said the company will build a nationwide network of charging stations and service centers as ...

Sunlight generates hydrogen in new porous silicon

Apr 10, 2014

Porous silicon manufactured in a bottom up procedure using solar energy can be used to generate hydrogen from water, according to a team of Penn State mechanical engineers, who also see applications for batteries, ...

Researching materials to optimize battery performance

Apr 08, 2014

Creating environment friendly energy storage systems, non-explosive and with charge/discharge long-term cycles, motivated a group of scientists from the Autonomous Metropolitan University, Campus Iztapalapa ...

Recommended for you

Brazil enacts Internet 'Bill of Rights'

10 minutes ago

Brazil's president signed into law on Wednesday a "Bill of Rights" for the digital age that aims to protect online privacy and promote the Internet as a public utility by barring telecommunications companies ...

Zynga founder Pincus leaving operations role

11 hours ago

Online game maker Zynga says company founder Mark Pincus is stepping down as chief product officer, less than a year after he was replaced as the company's CEO.

US urged to drop India WTO case on solar

11 hours ago

Environmentalists Wednesday urged the United States to drop plans to haul India to the WTO to open its solar market, saying the action would hurt the fight against climate change.

User comments : 0

More news stories

Is nuclear power the only way to avoid geoengineering?

"I think one can argue that if we were to follow a strong nuclear energy pathway—as well as doing everything else that we can—then we can solve the climate problem without doing geoengineering." So says Tom Wigley, one ...

US urged to drop India WTO case on solar

Environmentalists Wednesday urged the United States to drop plans to haul India to the WTO to open its solar market, saying the action would hurt the fight against climate change.