Experiments study on fast charge technology for Lithium-ion electric vehicle batteries

Bai, Yang; Zhang, Chengning

doi:10.1109/itec-ap.2014.6940761

Cited by 6 publications

(4 citation statements)

References 3 publications

(3 reference statements)

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“…Typical batteries employed for EVs belong to the class of Li-ion (lithium-ion) [19], [20]. Current and voltage values Fig.…”

Section: A Ev Charging Systemmentioning

confidence: 99%

EVScout2.0: Electric Vehicle Profiling Through Charging Profile

Brighente¹,

Conti²,

Denis³

et al. 2021

Preprint

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EVs (Electric Vehicles) represent a green alternative to traditional fuel-powered vehicles. To enforce their widespread use, both the technical development and the security of users shall be guaranteed. Privacy of users represents one of the possible threats impairing EVs adoption. In particular, recent works showed the feasibility of identifying EVs based on the current exchanged during the charging phase. In fact, while the resource negotiation phase runs over secure communication protocols, the signal exchanged during the actual charging contains features peculiar to each EV. A suitable feature extractor can hence associate such features to each EV, in what is commonly known as profiling.In this paper, we propose EVScout2.0, an extended and improved version of our previously proposed framework to profile EVs based on their charging behavior. By exploiting the current and pilot signals exchanged during the charging phase, our scheme is able to extract features peculiar for each EV, allowing hence for their profiling. We implemented and tested EVScout2.0 over a set of real-world measurements considering over 7500 charging sessions from a total of 137 EVs. In particular, numerical results show the superiority of EVScout2.0 with respect to the previous version. EVScout2.0 can profile EVs, attaining a maximum of 0.88 recall and 0.88 precision. To the best of the authors' knowledge, these results set a new benchmark for upcoming privacy research for large datasets of EVs.

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“…19 However, this charging method have negative lifespan effects on the battery. 20 Fast charging may decrease total lifespan of a Li-ion battery by 19% after 300 charging cycles. Another charging strategy is battery swapping stations, which is currently used by some EV manufacturers like Tesla motors.…”

Section: Introductionmentioning

confidence: 99%

“…These conditions are handled by the auxiliary battery storage, while other lenient conditions are relegated to the main one. Using this strategy, the lifespan of the main battery storage can be extended about 50% after 500 charge cycles, while the axillary pack can be swiftly exchanged to reduce congestion at charge stations. There will be less concern about exchanging a cheaper battery compared with an expensive one, so it is more preferred to swap auxiliary battery in comparison with the main battery.…”

Section: Introductionmentioning

confidence: 99%

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Contribution management of lead‐acid battery, Li‐ion battery, and supercapacitor to handle different functions in EVs

Farjah

Ghanbari

Seifi

2019

Int Trans Electr Energ Syst

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Summary One of the most concerning issues regarding electrical vehicles (EVs) is limited driving cycle and protracted charging process. In order to improve the efficiency of current batteries, appropriate energy management systems (EMSs) could be deployed to compensate these defects. To overcome these obstacles, an EMS including a bidirectional Cuk converter and a battery storage with two types of batteries is proposed. Lithium‐ion (Li‐ion) and lead‐acid battery types are considered as the main battery and auxiliary battery packs, respectively. Moreover, a supercapacitor is utilized to help the auxiliary battery for handling fast dynamics of the power delivery in braking and acceleration conditions. While the function of the main battery is to be charged and discharged in normal conditions, handling harsh conditions lies upon the auxiliary battery. So, the auxiliary battery can be rapidly discharged during acceleration and quickly recharged in charge stations. Furthermore, it can be used for an exchangeable battery strategy aimed at reducing congestion at charge stations. In order to plan for different scenarios, a Cuk converter is employed as a convenient interface between the batteries to manage power sharing. Operation of the system in different modes are discussed comprehensively. The performance of the proposed topology is assessed using some simulations and experiments in different conditions.

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Experiments study on fast charge technology for Lithium-ion electric vehicle batteries

Cited by 6 publications

References 3 publications

EVScout2.0: Electric Vehicle Profiling Through Charging Profile

Contribution management of lead‐acid battery, Li‐ion battery, and supercapacitor to handle different functions in EVs

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