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.

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.

Industrial disassembling as a key enabler of circular economy solutions for obsolete electric vehicle battery systems

2021 ◽  
Vol 174 ◽  
pp. 105735
Author(s):  
Simon Glöser-Chahoud ◽  
Sandra Huster ◽  
Sonja Rosenberg ◽  
Sabri Baazouzi ◽  
Steffen Kiemel ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Circular Economy ◽  
Battery Systems ◽  
Electric Vehicle Battery

Model-Based Fault Diagnosis for NiMH Battery

2008 ◽  
Author(s):  
Chris Suozzo ◽  
Simona Onori ◽  
Giorgio Rizzoni
Keyword(s):  
Fault Diagnosis ◽  
Electric Vehicle ◽  
Temperature Sensor ◽  
Hybrid Electric Vehicle ◽  
Current Sensor ◽  
Fault Current ◽  
Sensor Fault ◽  
Battery Systems ◽  
Electric Vehicle Battery ◽  
Nimh Battery

The objective of this paper is to present a fault diagnosis methodology for hybrid electric vehicle battery systems. The faults that have been considered include: temperature sensor fault, current sensor fault, and voltage sensor. Many of these faults, if left undetected, will result in decreased battery performance and could eventually lead to pack failure.

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>

Sign in / Sign up

Export Citation Format

Share Document