1. YUKI MURAKAMI of NIKKEI's Asian Review, July 21, 2020 reports:
https://asia.nikkei.com/Business/Technology/Japan-drone-submarine-eyes-16-hour-dive-with-plastic-battery
“Japan
drone submarine eyes 16-hour dive with plastic battery
Sanyo tests rechargeable
prototype with Kawasaki's unmanned vessel
TOKYO -- Sanyo Chemical
Industries' rechargeable battery made almost entirely of plastic [polymer] is
now powering an unmanned submarine [photo
above] by Kawasaki Heavy
Industries in a test run, with the promise of doubling the
vehicle's operation range to 16 hours.
The trial presents the first commercial use of the all-polymer
device made by Sanyo subsidiary APB.
The battery, whose electrolytes are also made of resin, lasts twice as long as its lithium-ion cousin and boasts cheaper production costs and greater resistance to fires.
The battery, whose electrolytes are also made of resin, lasts twice as long as its lithium-ion cousin and boasts cheaper production costs and greater resistance to fires.
Kawasaki's autonomous underwater vehicle is designed to inspect
oil pipelines and other deep sea equipment. Due to the nature of the work, an
internal battery would be subjected to high pressures.
The
all-polymer battery can withstand depths of more than 3,000 meters.
APB's
battery can power the vehicle for about 16 hours on a single charge,
up from roughly eight for a lithium-ion battery.
Mass
production for the all-polymer battery is said to cost 90% less than for a
lithium-ion counterpart due to the simplicity of the manufacturing process.
APB, is setting up a
plant in Japan's Fukui Prefecture.
Full-scale production will be ready around fall 2021, with sales
to begin before the fiscal year ends in March 2022. The aim is to develop a
business worth hundreds of billions of yen (100 billion yen equals US$934
million) within five to 10 years.
The operation will focus on stationary power storage for
buildings, but batteries for undersea drones have become feasible as well.
APB has raised roughly 9 billion yen from eight investors
through June, including trading house Toyota Tsusho and energy major Eneos
Holdings. Both Nissan Motor and Sanyo have licensed
polymer battery technology to APB to accelerate development.”
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2. Japan's Asahi Shimbun, earlier reported, September 20, 2019
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2. Japan's Asahi Shimbun, earlier reported, September 20, 2019
...Manufacturers in Japan, China
and South Korea are developing the next-generation battery to replace the
widely used lithium-ion ones.
Lithium-ion batteries can catch
fire or explode if they short circuit due to deformations or being dropped.
The problem can be attributed to
their low electrical resistance levels. Lithium-ion batteries contain metal,
which is less resistant to electricity and allows electricity to run quickly
within.
A battery made of highly resistant
resin is believed to have a smaller risk of generating heat and causing fires.
Even at high resistance levels, the
new storage cell can maintain its power output by changing the direction of the
electric current.
Hideaki
Horie, a specially appointed professor of battery studies at Keio
University [in Tokyo] who proposed the idea of resin-based storage cells,
described his invention as “the first-ever battery that does not use metal for
electrodes or other parts.”
Horie has been involved in the
development of the battery system for electric cars at Nissan Motor Co [eg. the Nissan Leaf ] and
started research on the all-resin battery in the 1990s.
One key challenge in
commercializing the technology is how to produce dedicated resin for storage
cells.
Sanyo Chemical Industries joined
the research project in 2012 after one of its employees heard Horie’s lecture.
The chemical maker creates mainly water-absorbing resin for disposable diapers
and had no know-how on battery development.
Despite the disadvantage, Sanyo
Chemical Industries suggested “5,000 kinds of material” to pave the way for the
commercial application of Horie’s brainchild.
A characteristic of the resin
battery is its simple structure. Larger batteries can be created just by
layering positive and negative electrodes made of different resin materials as
well as resin-based current collectors.
Resin storage cells do not require
the drying process essential to their predecessors, so the sheet-type battery
can be “printed” with rotary presses.
This will help slash manufacturing
costs by half compared with existing cells, according to Horie.
In addition, resin is flexible, so
batteries made of the substance can be shaped freely for various purposes by
bending or cutting...”
5 comments:
Hi Pete
Rival of all polymer LIB is all solid LIB which Toyota/Panasonic and GS Yuasa are developing.
Regards
Another new battery type, though this one may be more suited for SDVs and torpedoes, rather than larger subs:
"At vSOFIC, Mr. James Smith added that USSOCOM worked with Massachusetts Institute
of Technology’s (M.I.T.) Open Water Power™ startup on aluminum-seawater batteries
that are exposed to the ocean and corrode during transit. In theory, MIT’s batteries
are capable of powering submersibles up to ten times the range of normal Lithium-ion
batteries. (Open Water Power has since been purchased by L3 Harris Technologies
Corporation around 2017 although USSOCOM still keeps in contact with M.I.T.)."
"The aluminum-seawater battery can, in theory, change the range for an Unmanned
Underwater Vehicle (UUV) from hundreds to even a thousand miles by just feeding off
seawater as the fuel oxidizer. The aluminum batteries split the pulled seawater into
aluminum hydroxide where it interacts with an aluminum anode to create electrons,
powering the DCS. Both the aluminum hydroxide and hydrogen gas are jettisoned to the
waters as harmless waste. Thus, an SOCOM DCS outfitted with aluminum-seawater
batteries can travel safely from shore without having to be maintained at sea by
submarine tenders or support ships. This is important because the United Kingdom-
manufactured DCS was engineered and designed to be lowered from a crane aboard a
surface ship. With a battery range of around 60 miles, a surface ship could easily
be spotted off an enemy’s coastline, not particularly clandestine. With aluminum-
seawater batteries using the open ocean as “fuel,” the DCS’s range could be extended
to hundreds to even a thousand miles offshore until SOCOM can perfect delivering and
launching the new DCSs from a stealthy U.S Navy submarine."
See:
https://www.navalnews.com/naval-news/2020/06/ussocom-reveals-dry-combat-submersible-entering-service-soon/
Hi Anonymous [at July 22, 2020 at 8:05 AM]
Interesting "Rival of all polymer LIB is all solid LIB which Toyota/Panasonic and GS Yuasa are developing."
It is interesting that all these polymer LIB and solid LIB companies and research universities are Japanese.
I wonder if there are any foreign companies researching these new battery types?
Regards
Pete
Hi Anonymous [at July 23, 2020 at 6:37 AM ]
Very interesting regarding the USN and SOCOM working with MIT's "Open Water Power™ startup on aluminum-seawater batteries for SEAL Delivery Vehicles (SDVs) and torpedoes.
https://www.navalnews.com/naval-news/2020/06/ussocom-reveals-dry-combat-submersible-entering-service-soon/ quotes MIT News:
“The power system consists of an alloyed aluminum anode, an alloyed cathode, and an alkaline electrolyte positioned between the electrodes. Components are only activated when flooded with water. Once the aluminum anode corrodes, it can be replaced at Low Cost.”
I suppose transforming theory into practical batteries for use on manned sea vehicles will take a lot of testing. Use on torpedoes and AUV/UUVs and on silent surface USVs [?] may be economical ways to test.
Regards
Pete
Hi Pete
Photos of all polymer batteries co-developed by ARB and Sanyo Chemical Industries are introduced [1, 2]
[1]https://motor-fan.jp/tech/10013828
(1)Photo on the upper left: a newly developed all polymer battery-module (size ca. 550 x 400 x 50 mm)
(2)Photo on the upper right: internal structure (inside of (1)) 40 battery-cells are bipolar stuck-structured and directly connected.
[2]https://monoist.atmarkit.co.jp/mn/articles/2004/17/news049.html
Figure: Difference between conventional lithium ion battery (left) and all polymer battery with bipolar structure (right): green arrow (ion), yellow arrow (electron), black line (casing), red line (cathode), blue line (anode).
Regards
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