Session 3: Light- and Specialty-EV Technology and Market
Electrification of light and specialty vehicles, including bikes, scooters, buses and off-highway vehicles is advancing at a steady pace. Session 3 discussed light and specialty-EV market development and the advances in the technology and market of the Lithium-Ion batteries that increasingly power these vehicles.
Session Chairman:
Mo-Hua Yang, General Manager, TD HiTech Energy Inc.; President, EnergyBus e.V.
Dr. Yang has over 14 years of experience in Li-Ion battery development for EV applications. While at ITRI, he lead a team of 30 people dedicated to developing Li-ion batteries for LEV and HEV applications as well as the LEV promotion project in Taiwan, two projects that were supported by the Taiwanese government. He is now General Manager at TD HiTech Energy, Inc., a company that develops energy-storage systems and provides Li-Ion battery pack systems for E-Bike and E-scooter application markets, and President of EnergyBus e.V.
Session Chairman:
Tatsuo Horiba, Professor, Advanced Lithium Batteries, Mie University
Professor T. Horiba is now working on advanced lithium batteries in Mie University, however he is originally not a person of academia but of industry. He has been working in the field of battery technology for more than 35 years. For more than half of his career, he worked on large format lithium-ion batteries for automotive and stationary applications. He also participated in several NEDO projects for the batteries.
SESSION AGENDA
Battery Market for Light Electric Vehicles
Hiroshi Mukainakano, Vice President, B3 Corporation
LEVs (Light Electric Vehicles, typically weighs less than 100kg) are one of the largest electric vehicle markets. The pace of growth in the LEV industry has continued with greatest strength in China today. But most of all Electric bike equipped Lead-acid battery because of cost performance in China. On the technology side, Lithium ion powered electric scooters have developed in Taiwan. PEDELCs (Pedal Electric Bicycle) are getting popular in Japan and EU these utilize Lithium ion. In this session, how batteries are used for LEVs and explain battery demand in near future with market record.
Lithium-Ion Battery for a Dual-Battery System in a Car Utilizing Conventional Technology
Gaku Kamitani, Manager, Design Section 2, LIB Business Development Group, Murata Manufacturing Co., Ltd.
Dual battery system largely attracts interest especially from automotive industries. Combination of a cheap and large capacity lead-acid battery and a high power and effective lithium-ion battery seems complementary each other to make a satisfactory battery with reasonable cost. There is a challenge residing in the difference of their operational voltages, however it is publicly known that a lithium-ion battery possessing a certain characteristic should overcome the difficulty. In the presentation, Murata’s challenge to realize such a lithium-ion battery is discussed. Murata’s approach is to make the best use of conventional technology, avoiding development of a novel technology as possible. Specifically we will:
- Review automotive dual battery system of our interest
- Summarize the requirements for the lithium-ion battery in the system
- Introduce an example of the design of the lithium-ion battery
- Discuss the challenges to overcome
High Performance Lithium-Ion Battery for Motorcycles
Kazunori Ozawa, Li-Ion Cell Design and Manufacturing Consultant, Enax, Inc.
Moped has been popular for commuting for a long time, but the sales have been gradually declined because of diversification of commuting systems.
However bigger motorcycles are becoming popular and the sales are expected to increase one million in 2020 in Japan. The reason is that motorcycles more than 250 cc are used not only for daily life but also for sports, leisure and other hobbies. Especially the riders of 1000 – 1200 cc motorcycles desire active driving and good feeling.
Then lithium ion batteries were used for the starters of motorcycles and the tastes of the driving were examined.
Considering the voltage from a generator the battery pack was constructed with 6-series and 2-pallarels using 1.45 Ah cells. The cathode and the anode materials were LNO and LTO, respectively. The performances of these cells were also investigated for taking account of the future vehicles.
Recent 18650 Li-Ion Battery Development for EV/LEV Applications
Mo Hua Yang, General Manager, TD HiTech Energy Inc.; President, EnergyBus e.V.
Thanks to the mass market of NB applications in the past 20 years,18650 cylindrical type cell becomes a mature standard Li-ion battery. Today, more than 1 billion 18650 cells produce to the market every year for different applications. Highly automatic manufacturing process leads to 18650 cell has high uniformity and quality. Low cost, high performance and high safety design experience are the 18650 cell advantage as well. It makes the 18650 cell consider using for EV applications.
This presentation will discuss:
- LEV market developing trend
- 18650 cell developing status
- 18650 cell design consideration for EV/LEV
- Characteristics of current NCA-based high capacity 18650 cell
- Conclusions and Outlook
Public Transportation Powered by Wanxiang A123 Systems Asia
Xinbao Gao, Chief Technology Officer, Wanxiang A123 Systems Asia Ltd.
Public Buses play an important role in China, yet the diesel engines worsen the air pollution of metropolitan areas. WxAA provides a battery solution to electrify buses. The battery system is composed of several sub-pack systems to get the >100Km driving range. Each Sub-pack is integrated with the thermal control and battery management system. The modular structure design is applied to flexibly make the prismatic pouch cells into different S/P configurations. The battery system has been successfully deployed in many cities even the low temperature north China area.
- WxAA Company Introduction and Business Focus
- Battery Cell Products and Roadmap
- Battery Systems for Public City Buses
- Low temperature solution
- Practical Applications in China
Battery Systems for Commercial and Industrial Electric and Hybrid Vehicles: Technical Challenges
Beatrice Lacout, Business Development and Sales Manager, Saft Industrial Battery Group
Challenges and stakes in the commercial and industrial electric and hybrid vehicles market
Within all vehicle applications, a special focus will be put on commercial and industrial vehicles.
- Off road vehicle segment: forklifts, AGV, Underground and surface mining truck, Farm and forest trucks, Construction equipment, Airport Ground Support equipment, Seaport yard tractors…
- On road vehicle segment: Buses and public transportation, Delivery trucks
- Off road outdoor vehicles represent an untapped potential as they are switching from internal combustion engine to electric or hybrid drive.
- Range of operating voltage and typical energy need will be presented by main application segment
- Such industrial and commercial applications require either a lot of power or a lot of energy and often both. Moreover, industrial and commercial vehicles represent a very wide range and large diversity of applications. Both above specificities of this vehicles segment bring complexity in the battery design.
Main technical challenges in system battery development
(Discuss process to develop the battery: cells, modules, BMU with angle of safety -Talk about Matlab…).
- Battery sizing strategy: what customer wants vs what battery manufacturers can offer?
- Simulation tools and process for optimum sizing
- Design of the system and validation process
Saft standard offer for industrial and commercial electric vehicles
(Some example of integration from cells to modules to complete battery system will be given)
