Reconfigurable battery system for ultra fast charging of industrial electric vehicles

Reconfigurable battery system for ultra fast charging of industrial electric vehicles

Molenaar, B.A.M.

De Haan, S.W.H. (mentor)

Electrical Engineering, Mathematics and Computer Science

Electrical Power Processing

2010-05-25

The application of lithium-ion batteries in electric vehicles provides some interesting advantages over lead-acid batteries, for instance the possibility to charge in 15 minutes. Fast charge currents are much larger than common charge currents, creating a need for uncommon hardware, for instance connectors with high current ratings. The client wants to know what the best technology is to transfer energy from a utility connection to an industrial electric vehicle’s battery. A literature study is done to determine the state of the art of energy transfer to electric vehicles. To identify the best technology for energy transfer to industrial electric vehicles, different concepts are generated. It was intended to select the best concept from these concepts but this was not possible because of lack of information. One of the proposed battery systems is a reconfigurable battery, of which little knowledge was found to be available. This reconfigurable battery system offers interesting advantages for charging systems so more knowledge was desired. Battery reconfiguration means that a battery is divided into multiple, identical modules, which can be connected in series and in parallel. By charging with series connection the charging current is reduced and the voltage increased. An investigation is done on implementation, safety, performance and influence on ageing.

electric vehicle
battery reconfiguration

http://resolver.tudelft.nl/uuid:092f476d-97b9-4bdb-a7b5-7113ecf9b120

2011-05-25

Student theses

master thesis

(c) 2010 Molenaar, B.A.M.