Low temperature and high energy density 18650 3350mAh-40℃ 0.5C discharge
capacity ≥60%
Charging temperature: 0~45℃ Discharge temperature: -40~+55℃ Specific
energy: 240Wh/kg -40℃ Discharge capacity retention rate: 0.5C Discharge capacity
≥ 60%
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On the other hand, the technical level of power batteries continues to
improve and the cost continues to decrease, which also provides support for the
development of the electric ship industry. Currently, the single energy density
of lithium iron phosphate batteries used in electric ships has been increased
from 100Wh/kg to 160Wh/kg, and the system energy density has also been greatly
improved. In terms of price, the price of lithium iron phosphate batteries has
dropped to 0.6 yuan/Wh, which is already economical in ship applications.
Based on safety and economy, lithium iron phosphate power batteries and BMS
battery management systems have developed rapidly in recent years. The increase
in charge and discharge rates has enabled ship startup acceleration and better
power control. The technical conditions have been met for promotion and
application on ships. "Lithium iron phosphate batteries have become the best
choice for ship power batteries at this stage due to their high safety, long
life, low cost, balanced performance and other advantages." Wu Kai, vice
president of CATL, believes.
In fact, many power battery companies in overseas markets have begun to get
involved in the electric ship market. Companies such as South Korea's Samsung
SDI, Dutch energy storage and battery company LithiumWerks, and German battery
manufacturer Akasol AG are all actively developing the electric ship market.
The "2015-2024 Global Electric Ships, Small and Autonomous Underwater Ships
Market Report" released by the international market research company
ResearchandMarkets predicts that due to factors such as good performance,
affordable costs, legal prohibitions, etc., the electric ship market is
experiencing rapid growth. It is expected that By 2024, the global electric ship
market will reach US$7.3 billion, and the market prospects are considerable.
Domestically, urban ferries, sightseeing boats, inland river cargo ships,
work boats, etc. along rivers and coastal areas are all expected to be partially
replaced by electric vehicles. According to statistics from the Chinese Society
of Shipbuilding Engineers, as of May 2019, the number of large-scale electric
ships in operation and planned to be built globally is 155, of which 75 are in
operation and 80 are planned to be built. In my country, only the Yangtze River
and Beijing-Hangzhou The total number of ships in the canal exceeds 60,000,
which shows that the market space is huge.
Although the electric ship market cannot be compared with electric vehicles
in terms of quantity, it is worth noting that generally electric vehicles have a
charge of 50-100kWh, while a ship can have a charge of hundreds or even
thousands of kWh, and the demand is also very considerable. . For example, in
November 2017, the world's first 2,000-ton pure electric bulk carrier had a
battery capacity of approximately 2,400kWh, which is equivalent to the battery
capacity of 40 BYD E6 "Pioneer" cars.
It is worth noting that despite the huge market potential of electric
ships, electric ships are still in their infancy. Currently, the large-scale
promotion and application of electric ships are still limited by the lack of
relevant standards, imperfect charging facilities, limited power supply capacity
of the grid, and unclear business models. question.
In fact, ships equipped with lithium batteries as power sources must be
certified by the classification society’s lithium battery product technical
standards before they can be used. It is understood that as of June 2019, there
are only 11 domestic electric marine battery companies certified by
classification societies, with more than 20 related certified products. The
initial competition is still small, so many companies have already paid
attention and got involved.
Lithium iron phosphate leading companies are pouring in one after
another
"The battle to defend the blue sky will bring new opportunities for the
electrification of new energy vehicles in the short term, but in the future the
electrification of the shipbuilding industry that the country will promote will
also have a huge market." Huang Shilin, vice chairman of CATL, once said
bluntly. In fact, in January 2019, CATL signed a strategic cooperation agreement
with the China Classification Society (CCS) Wuhan Standardization Institute in
Fujian. The two parties will carry out strategic cooperation in various aspects
such as promoting the research and on-water application of battery system ship
technical standards, accelerating the recognition and inspection of related
battery products, and further deepening all-round cooperation and exchanges on
resource sharing, technical cooperation, and service upgrades. achieve
intention.
In June of the same year, CATL revealed that the company had signed
cooperation agreements with multiple parties in the field of electric ships.
Among them, the Yangtze Three Gorges Navigation Administration's "Haixun 12909",
the first pure electric official ship in the Yangtze River Basin, is equipped
with CATL's lithium iron phosphate battery, with a capacity of 0.68MWh and a
maximum speed of 21km/h.
The shipping field has been regarded by CATL as an important pole. Not only
the domestic market, the company is also actively exploring the international
market. In December 2019, CATL signed a framework agreement with the American
Bureau of Shipping (ABS) on lithium battery application research in ships,
officially entering the overseas ship market.
Another domestic company that is developing rapidly in the field of
shipbuilding is Yiwei Lithium Energy. As early as 2016, Yiwei Lithium Energy's
marine power battery obtained the China Classification Society CCS
certification, and in 2019, it obtained the German Rheinland explosion-proof
certification. As of December 2019, Yiwei Lithium Energy has installed more than
200 electric ships in the field of electric ships, which are used in scenic
boats, riverside coastal ferries, sightseeing ships and inland river cargo
ships, port tugs, river-sea intermodal bulk carriers, etc.
In June 2019, EVE Lithium Energy signed a cooperation agreement with
Shanghai Hanshun Shipping Co., Ltd. to provide power batteries for 18 5,000-ton
new energy bulk carriers of Shanghai Hanshun Shipping; in December of the same
year, the company also signed a cooperation agreement with CSSC The Power
Research Institute signed the "New Energy Power System Battery Product
Cooperation Agreement" to jointly develop the field of electric ships.
This time, the subsidiary of Guoxuan High-tech has obtained a ship order,
which also shows that Guoxuan High-tech has made breakthrough progress in the
field of electric ships. Earlier, BYD also revealed that it intends to get
involved in the field of electric ships. In March this year, LithiumWerks of the
Netherlands, which has extensive experience in the fields of maritime and ship
electrification, also settled its lithium battery project in China and invested
in the construction of a 20GWh lithium battery project, aiming to target the
Chinese electric ship market. It is expected that in the future, more battery
companies, especially those focusing on lithium iron phosphate batteries, will
focus on the field of electric ships.
It is true that the electric ship market has promising prospects, but it is
different from the application scenarios of electric vehicles. The electric ship
field also has special needs for batteries. "Problems such as the safety of
high-power pure battery power, increased energy density, and high one-time cost
will be difficulties in promoting the application of lithium batteries on
ships." Some analysts pointed out that battery companies still need to cooperate
with shipbuilding companies to strengthen technology Research and development,
full testing and verification to ensure safe, reliable application and economy,
paving the way for the development of the electric ship industry. As more and
more lithium battery companies enter, the innovation and development of electric
ship technology will also be accelerated. “As more and more companies with
strong capabilities in the field of power battery R&D and production enter
the field of ship power battery supporting and join forces with intelligent new
energy ship technology innovation companies, domestic pure electric and
diesel-electric hybrid and other intelligent new technologies will be further
accelerated. The pace of energy ship technology innovation." said Hu Jianjun,
general manager of Shanghai Guoxuan Wuyang Ship Technology Co., Ltd. ABB,
Battery China Network
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