Home> Blog> Hitachi develops 48V lithium-ion battery pack with 1.5 times higher energy density

Hitachi develops 48V lithium-ion battery pack with 1.5 times higher energy density

August 28, 2022
Hitachi Automotive Systems Co., Ltd. has developed a 48V lithium-ion battery pack with a new output density and energy density for medium-duty hybrid vehicles. The output density is 1.25 times that of the traditional single product, and the energy density is 1.5 times that of the traditional single product.
Hitachi develops 48V lithium-ion battery pack with 1.5 times higher energy density

It is reported that Hitachi Automotive Systems Co., Ltd. has developed a 48V lithium-ion battery pack with a new output density and energy density for medium-duty hybrid vehicles. The output density is 1.25 times that of the traditional single product, and the energy density is 1.5 times that of the traditional single product. In the future, Hitachi Automotive Systems will begin to supply samples to automaker customers and is committed to mass production in 2019.

In recent years, a medium-sized hybrid electric vehicle system driven by a battery and an electric motor-assisted gasoline engine has been widely concerned as a technology for effectively reducing the fuel consumption of passenger cars. In 2016, the annual production of global medium-duty hybrid vehicles reached approximately 450,000 units, and is expected to exceed 12.8 million units by 2023. Especially in Europe and China, the medium-oil hybrid system equipped with a 48V lithium-ion battery has a good fuel consumption reduction effect and a high cost performance, and will be rapidly popularized.

Hitachi Automotive Systems has been closely monitoring the market development trend. In March 2016, it developed a 48V lithium-ion battery pack for medium-duty hybrid vehicles, combining the lithium-ion battery bills used in hybrid vehicles. Body Manufacturing Technology and Battery Management System (BMS) technology.

Lithium-ion batteries are charged and discharged by moving lithium ions in the electrode material. In order to increase the battery output density, the conventional method is generally to reduce the thickness of the electrode film to reduce the electric resistance. However, after the output density is increased, there is a problem that the energy storage capacity is insufficient.

The new lithium-ion battery pack has improved the electrode structure of the battery in a micron order, forming a structure in which lithium ions are easy to flow, and reducing the resistance and increasing the output density without reducing the thickness of the electrode film.

At the same time, the material composition of the positive electrode and the negative electrode is further improved, the lithium content accumulated per unit weight is increased, and the energy density is improved. As a result, the new lithium-ion battery pack has a new high output density and energy density, the output density is 1.25 times that of the traditional single product, and the energy density is 1.5 times that of the traditional single product.

In addition, the new lithium-ion battery pack also controls the internal resistance of the battery cell, reduces the heat generation, and uses the metal with high thermal conductivity and heat dissipation to make the frame of the lithium-ion battery pack, eliminating the need for The cooling fan enhances the freedom of installation, effectively reducing the overall thickness of the product and enhancing the quiet performance.

As the output density increases, the torque performance of the motor acceleration assist is enhanced, and the maximum output power can reach more than 12 kW, and the starting force is more powerful. At the same time, the maximum input power has reached more than 15kW, and a large amount of renewable energy generated by the sudden braking can also be recovered, reducing energy consumption. On the basis of improved input and output performance, as the energy density increases, the fuel consumption is also effectively reduced.

In the future, Hitachi Automotive Systems will continue to provide electric power transmission products including high-performance, high-reliability lithium-ion batteries for electric vehicles with high market demand, and promote the development and popularization of electric vehicles to contribute to environmental protection. .

Contact Us

Author:

Mr. Alvin

Phone/WhatsApp:

8618620311301

Popular Products
You may also like
Related Information
2023 High Power Lithium Intelligent Manufacturing Summit and Western Robotics Conference

From April 13 to 14, the 2023 High Power Lithium Intelligent Manufacturing Summit and the Western Robotics Conference were held at the Dragon Dream Hotel in Chengdu. The theme of the summit is...

the 4th International Conference on New Energy Automobile & Power Battery (CIBF 2023, Shenzhen)

The 4th International Conference on New-Energy Automobile & Power Battery (CIBF 2023, Shenzhen) Theme of Conference New Cycle · New Application --- Innovation and Expansion of Power Battery Time...

A breakthrough in the core technology of lithium batteries, global giants compete for nickel resources

Recently, breakthroughs have been made in the core technology of lithium batteries, the high-nickel route has become an industry consensus, and global giants are competing for nickel resources. The...

Scientists found super durable battery ultra-lithium battery 400 times

April 26 news, according to foreign media reports, researchers at the University of California accidentally found that gold nanowire batteries can be 400 times greater than the durability of lithium...

Related Categories

Email to this supplier

Subject:
Email:
Message:

Your message must be betwwen 20-8000 characters

Contact

  • Tel: +86-0755-84514553
  • Mobile Phone: 8618620311301
  • Email: alvin@lr-power.com
  • Address: 203, No. 10, Chunyang Industrial Park, Zhugushi, Wulian Community, Longgang Street, Longgang District, Shenzhen, Shenzhen, Guangdong China

Send Inquiry

We will contact you immediately

Fill in more information so that we can get in touch with you faster

Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.

Send