scholarly journals Comprehensive Analysis of Pre-Charge Sequence in Automotive Battery Systems

2019 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Murat Kubilay Ozguc ◽  
Eymen Ipek ◽  
Kadir Aras ◽  
Koray Erhan
Keyword(s):  
Solid State ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
High Voltage ◽  
Semiconductor Devices ◽  
Comprehensive Analysis ◽  
Safety Concept ◽  
Battery Systems ◽  
Electric Vehicle Battery

<p>Electric vehicles (EV) have brought promising technologies for future mobility solutions. As one of the key components of EVs, battery systems have fundamental functions which disconnect the battery during parking and in case of failure. To provide a safe system, specialized high voltage (HV) electromechanical switches are used to perform these major functions such as switch on, switch off or pre-charging. Due to these components can be easily damaged, expensive, heavy and bulky, a solution based on pure semiconductors may be desired to accomplish these operations. Many studies were exhibited on EV battery systems regarding developing solid-state systems for HV switchgear. Developing technology on semiconductor devices allows to make a safety concept based on only solidstate components. This study presents a comprehensive analysis off pre-charge sequences between conventional and semiconductor switchgear to be used in electric vehicle battery systems. Spice simulations are presented to investigate advantages and drawbacks of these systems.</p>

scholarly journals Electric Vehicle Battery Performance Investigation Based on Real World Current Harmonics

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 489 ◽  
Author(s):  
Sid-Ali Amamra ◽  
Yashraj Tripathy ◽  
Anup Barai ◽  
Andrew D. Moore ◽  
James Marco
Keyword(s):  
Electric Vehicle ◽  
Real World ◽  
Low Frequency ◽  
Single Frequency ◽  
Current Harmonics ◽  
Battery Systems ◽  
Electric Vehicle Battery ◽  
Dc Bus ◽  
Dc Current ◽  
The Impact

Electric vehicle (EV) powertrains consist of power electronic components as well as electric machines to manage the energy flow between different powertrain subsystems and to deliver the necessary torque and power requirements at the wheels. These power subsystems can generate undesired electrical harmonics on the direct current (DC) bus of the powertrain. This may lead to the on-board battery being subjected to DC current superposed with undesirable high- and low- frequency current oscillations, known as ripples. From real-world measurements, significant current harmonics perturbations within the range of 50 Hz to 4 kHz have been observed on the high voltage DC bus of the EV. In the limited literature, investigations into the impact of these harmonics on the degradation of battery systems have been conducted. In these studies, the battery systems were supplied by superposed current signals i.e., DC superposed by a single frequency alternating current (AC). None of these studies considered applying the entire spectrum of the ripple current measured in the real-world scenario, which is focused on in this research. The preliminary results indicate that there is no difference concerning capacity fade or impedance rise between the cells subjected to just DC current and those subjected additionally to a superposed AC ripple current.

Challenge-Driven Printing Strategies Toward High-Performance Solid-State Lithium Batteries

2022 ◽  
Author(s):  
Jing Wang ◽  
Xingkang Huang ◽  
Junhong Chen
Keyword(s):  
Solid State ◽  
Electric Vehicles ◽  
Lithium Batteries ◽  
High Performance ◽  
Form Factors ◽  
Portable Devices ◽  
Li Ion Batteries ◽  
Battery Systems ◽  
Li Ion

Solid-state lithium batteries (SSLBs) are promising candidates for replacing traditional liquid-based Li-ion batteries and revolutionizing battery systems for electric vehicles and portable devices. However, longstanding issues such as form factors,...

Recycling Li-Ion Batteries: Robotic Disassembly of Electric Vehicle Battery Systems

2019 ◽  
Author(s):  
Ian Kay ◽  
Roja Esmaeeli ◽  
Seyed Reza Hashemi ◽  
Ajay Mahajan ◽  
Siamak Farhad
Keyword(s):  
Electric Vehicle ◽  
Lithium Ion ◽  
Robotic System ◽  
Disassembly Process ◽  
Battery Systems ◽  
Electric Vehicle Battery ◽  
Li Ion ◽  
Robotic Disassembly ◽  
The Cost ◽  
Automated Disassembly

Abstract This paper presents the application of robotics for the disassembly of electric vehicle lithium-ion battery (LIB) packs for the purpose of recycling. Electric vehicle battery systems can be expensive and dangerous to disassemble, therefore making it cost inefficient to recycle them currently. Dangers associated with high voltage and thermal runaway make a robotic system suitable for this task, as the danger to technicians or workers is significantly reduced, and the cost to operate a robotic system would be potentially less expensive over the robots lifetime. The proposed method allows for the automated or semi-automated disassembly of electric vehicle LIB packs for the purpose of recycling. In order to understand the process, technicians were studied during the disassembly process, and the modes and operations were recorded. Various modes of interacting with the battery module were chosen and broken down into gripping and cutting operations. Operations involving cutting and gripping were chosen for experimentation, and custom end of arm tooling was designed for use in the disassembly process. Path planning was performed offline in both MATLAB/Simulink and ROBOGUIDE, and the simulation results were used to program the robot for experimental validation.

scholarly journals Water/Nanofluid Pulsating Flow in Thermoelectric Module for Cooling Electric Vehicle Battery Systems

2021 ◽  
Vol 39 (5) ◽  
pp. 1618-1626
Author(s):  
Sarawut Sirikasemsuk ◽  
Songkran Wiriyasart ◽  
Ruktai Prurapark ◽  
Nittaya Naphon ◽  
Paisarn Naphon
Keyword(s):  
Electric Vehicle ◽  
Thermoelectric Module ◽  
Experimental System ◽  
Thermoelectric Cooling ◽  
Cooling Performance ◽  
Peltier Module ◽  
Battery Systems ◽  
Electric Vehicle Battery ◽  
Cooling Module ◽  
Side Flow

We investigated the results of the cooling performance of the pulsating water/nanofluids flowing in the thermoelectric cooling module for cooling electric vehicle battery systems. The experimental system was designed and constructed to consider the effects of the water block configuration, hot and cold side flow rates, supplied power input, and coolant types on the cooling performance of the thermoelectric module. The measured results from the present study with the Peltier module are verified against those without the thermoelectric module. Before entering the electric vehicle battering system with a Peltier module, the inlet coolant temperatures were 2.5-3.5℃ lower than those without the thermoelectric system. On the hot side, the maximum COP of the thermoelectric cooling module was 1.10 and 1.30 for water and nanofluids as coolant, respectively. The results obtained from the present approach can be used to optimize the battery cooling technique to operate in an appropriate temperature range for getting higher energy storage, durability, lifecycles, and efficiency.

scholarly journals Deployment of a Bidirectional MW-Level Electric-Vehicle Extreme Fast Charging Station Enabled by High-Voltage SiC and Intelligent Control

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1840
Author(s):  
Ziwei Liang ◽  
Daniel Merced ◽  
Mojtaba Jalalpour ◽  
Hua Bai
Keyword(s):  
Electric Vehicle ◽  
Power Density ◽  
High Voltage ◽  
Battery Charging ◽  
Charging Station ◽  
Range Anxiety ◽  
System Input ◽  
Electric Vehicle Battery ◽  
Low Efficiency ◽  
The Impact

Considering the fact that electric vehicle battery charging based on the current charging station is time-consuming, the charging technology needs to improve in order to increase charging speed, which could reduce range anxiety and benefit the user experience of electric vehicle (EV). For this reason, a 1 MW battery charging station is presented in this paper to eliminate the drawbacks of utilizing the normal 480 VAC as the system input to supply the 1 MW power, such as the low power density caused by the large volume of the 60 Hz transformer and the low efficiency caused by the high current. The proposed system utilizes the grid input of single-phase 8 kVAC and is capable of charging two electric vehicles with 500 kW each, at the same time. Therefore, this paper details how high-voltage SiC power modules are the key enabler technology, as well as the selection of a resonant-type input-series, output-parallel circuitry candidate to secure high power density and efficiency, while intelligently dealing with the transient processes, e.g., pre-charging process and power balancing among modules, and considering the impact on the grid, are both of importance.

Analysis in Power Battery Gradient Utilization of Electric Vehicle

2011 ◽  
Vol 347-353 ◽  
pp. 555-559
Author(s):  
Dan Ming Cheng ◽  
Jing Zhou ◽  
Jin Li ◽  
Cheng Gang Du ◽  
Hua Zhang
Keyword(s):  
Energy Storage ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Value Chain ◽  
Battery Energy Storage ◽  
Energy Storage Technology ◽  
Power Battery ◽  
Electric Vehicle Battery ◽  
Battery Technology ◽  
Battery Energy

Currently the high cost and battery cycle life of lithium are the main limitations of commercial developing of electric vehicles, the chemical battery energy storage technology is also facing battery performance and cost issues. the current development of electric vehicle battery technology was analyzed, the magnificance and the value of electric vehicle battery gradient utilization are proposed, the application in different applications field of gradient utilization of electric vehicle battery was analyzed, in the end, this paper concluded that the battery gradient utilization technology will enable the electric vehicles and energy storage to generate new value chain.

System Reliability of High-voltage Battery Systems for Electric Vehicles

2015 ◽  
Vol 10 (5) ◽  
pp. 14-19
Author(s):  
Rüdiger Heim ◽  
Alexander Dautfest ◽  
David Flaschenträger ◽  
Chalid El Dsoki
Keyword(s):  
Electric Vehicles ◽  
High Voltage ◽  
System Reliability ◽  
Battery Systems ◽  
High Voltage Battery
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