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This paper focus on the prevention and risk management of DC arcs in batteries. Indeed some commercial Li-ion batteries include Positive Temperature Coefficient (PTC) and Current Interrupt Device (CID) to manage safety concerns. PTC is used to prevent too high currents inside the cell. CID is used to manage cell over-charge by opening the cell circuitry by internal pressure increase. Analysis will...
Since a laptop caught fire in 2006 at the latest, Li-ion cells were considered as more dangerous than other accumulators [1]. Recent incidents, such as the one involving a BYD e6 electric taxi [2] or the Boeing Dreamliner [3], give rise to questions concerning the safety of L#i-ion cells. This is a crucial point, since Li-ion cells are increasingly integrated in all kinds of (electric) vehicles. Therefore...
ELIIY Power Co., Ltd. (ELP) [1] has commercialized a high safe large format lithium ion cell using LiFePO4 as the cathode material. The cell shows discharge capacity of 50Ah at room temperature, and has passed safety standard test “S-Mark” certification by TÜV Rheinland Japan. The cell's safety and electrochemical performance is suitable for the large format energy storage system, e.g., HEMS, BEMS.
Electronic Double-Layer Capacitors (Supercapacitors) have energy densities that are roughly two orders of magnitude greater than their traditional capacitor counterparts. The high charge and discharge rate, long life, low internal resistance, high output power, and improved energy density of the super caps has introduced the possibility of these devices being used in portable electronics. Supercapacitors...
The lithium ion (Li-ion) battery market has undergone tremendous growth since its conception in 1990. Projections have indicated that the Li-ion battery market in the United States will top $9 billion in the next 3 years. Several factors including technical innovation, increased use of sophisticated consumer electronic gadgets and surge in high efficiency power sources for industrial applications...
Energy security, economic growth, and global warming are driving nations to develop electric vehicle technologies to reduce dependence on oil. Energy storage (batteries) will be critical to the success of this change. Utilities are also looking at energy storage throughout the grid to facilitate inclusion of renewable sources and improve the reliability and utilization of the existing grid infrastructure...
Many telecom operators are attracted by the prospect of deploying energy-dense lithium-ion batteries but at the same time are aware of the large-scale recalls of laptop computer batteries and reports of problems with lithium metal polymer batteries in telecom outside plant applications. The publicity associated with such incidents is inevitably highly negative for both the battery manufacturer and...
Energy is the bedrock of our daily lives and industry. Now is the time that industry, government and academia must join together and examine highly independent, fully environmentally considerate and rational energy systems. In this presentation, recent Japanese policy will be introduced focusing on new national energy strategy. Looking at future technology trends, it is probable that, in the case...
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