Loading [MathJax]/extensions/MathZoom.js
Xiaosong Hu - IEEE Xplore Author Profile

Showing 1-25 of 135 results

Results

Eco-driving is a viable technology with higher energy-saving potential at signalized intersections. The rapid development of connected and automated technology provides more opportunities for the eco-driving of hybrid electric vehicles (HEVs). However, it is more challenging to co-optimize speed planning and energy management due to their coupling and complex features. To this end, a co-optimizati...Show More
Integrating range-extended electric vehicles (REEVs) in the automotive market is a key part of the drive toward environmental sustainability. This paper leverages an experience-shared approach to variable-step predictive control to improve REEV energy efficiency, where a transferable driver model is designed to accommodate varying driver experience levels via knowledge transfer. This model incorpo...Show More
Accurate estimation of the state of charge (SOC) and state of health (SOH) is crucial for safe and reliable operation of batteries. Voltage measurement bias strongly affects state estimation accuracy, especially in Lithium Iron Phosphate (LFP) batteries, owing to the flat open-circuit voltage (OCV) curves. This work introduces a bias-compensated algorithm to reliably estimate SOC and SOH of LFP ba...Show More
Accurate and efficient monitoring of the state of health (SOH) of lithium-ion batteries during operation is the key to ensure the safe and reliable operation of electric vehicles (EVs). However, applying existing lab-based methods directly to field data is challenging due to the complex operating conditions in realistic scenarios. Therefore, this study introduces a data-driven SOH estimation metho...Show More
The reliability, lower computational complexity, and ease of implementation of control observers make them one of the most promising methods for the state estimation of Li-ion batteries (LIBs) in commercial applications. To pave their way, this study performs a comprehensive and systematic evaluation of four main categories of control observer-based methods in different practical scenarios conside...Show More
We propose an integrated design for the combined estimation of state-modified cell core temperature, temperature-corrected state of charge (SOC), and state of energy (SOE) of lithium-ion batteries (LIBs). First, a control-oriented integrated electrothermal coupled model is constructed. The observability of the proposed MIMO system is rigorously investigated, and an adaptive PI observer is formulat...Show More
The effectiveness of a battery management system (BMS) in lithium-ion batteries (LIBs) is significantly dependent on the accuracy of battery sensors. However, owing to the highly nonlinear nature of LIBs, detecting small uncertainties in sensor measurements, which can lead to high estimation errors, poses a remarkable challenge. Moreover, in conventional BMS, sensor uncertainty detection and state...Show More
Urban air mobility (UAM) has become an emerging urban travel paradigm due to its viability of alleviating traffic congestion and reducing commute time. Accurate and robust knowledge of key battery states, such as state of charge (SOC), state of temperature (SOT), and state of power (SOP), is a prerequisite for the safe, efficient, and reliable operation of electric flying cars. In this article, we...Show More
Owing to the nonnegligible impacts of temperature on the safety, performance, and lifespan of lithium-ion batteries, it is essential to regulate battery temperature to an optimal range. Temperature monitoring plays a fundamental role in battery thermal management, yet it is still challenged by limited onboard temperature sensors, particularly in large-scale battery applications. As such, developin...Show More
The successful integration of statistical machine learning techniques into battery health diagnosis has significantly advanced the development of transportation electrification. To achieve predictive maintenance of batteries, we propose a comprehensive data-driven approach for battery capacity trajectory prediction based on degradation pattern (DP) recognition and health indicators (HIs) extrapola...Show More
The development of intelligent transportation technology provides a great opportunity for energy efficiency improvement of electrified vehicles. However, for plug-in hybrid vehicles, eco-driving control usually involves three problems, including speed planning, SOC planning, and energy management. Solving the above three problems requires considering not only the fuel economy but also the computat...Show More
Plug-in hybrid electric vehicles (PHEVs) with large battery packs have significant advantages in improving fuel efficiency and lowering harmful emissions. However, battery charging and discharging performance degrades dramatically at low temperatures, resulting in increasing vehicle operating expenses, which hinders the deployment of PHEVs in severe cold regions. To address this challenge, this pa...Show More
Fuel cell vehicles (FCVs) are considered a promising solution for reducing emissions caused by the transportation sector. An energy management strategy (EMS) is undeniably essential in increasing hydrogen economy, component lifetime, and driving range. While the existing EMSs provide a range of performance levels, they suffer from significant shortcomings in robustness, durability, and adaptabilit...Show More
Fuel cell vehicles (FCVs) are gaining popularity in heavy-duty transportation applications because of their high efficiency, lack of local emissions, and short refueling time. Moreover, cooperative adaptive cruise control (CACC), which plans the longitudinal movements of heavy-duty vehicles, is also a potential solution to increase fuel efficiency, safety, and road capacity. In order to integrate ...Show More
The large-scale application of lithium-ion batteries (LIBs) in electric vehicles (EVs) requires meticulous battery management to guarantee vehicular safety and performance. Temperatures play a significant role in the safety, performance, and lifetime of LIBs. Therefore, the state of temperature (SOT) of batteries should be monitored timely by the battery management system. Due to limited onboard t...Show More
This article presents a system-level fault diagnosis scheme for the high-voltage load system of electric city bus (ECB). First, a predesigned excitation signal generated by the battery system is injected into the high-voltage load system during parking, and the response signal is captured by high-speed data acquisition device. Then, time domain features, frequency domain features, and time-frequen...Show More
Connected and automated vehicle technology via vehicle-to-everything communication, can assist in improving energy efficiency for hybrid electric vehicles (HEVs). In particular, information about the timing of traffic lights and surrounding vehicles can be exchanged between traffic vehicles and in conjunction with vehicle state information, to improve the fuel economy of HEVs significantly. To thi...Show More
The optimization-based energy management strategy (EMS) enables expertise to improve the performance of fuel cell vehicles (FCVs). Ongoing efforts are mostly focused on optimizing a centralized EMS using a variety of high-computing technologies without offering appropriate scalability and modularity for the onboard powertrain components. In real-time applications, the time-accomplishment capabilit...Show More
Reliable and accurate velocity prediction can significantly contribute to the quality of connected vehicle control applications. Existing efforts focus on the velocity prediction without considering vehicle-to-vehicle (V2V) communication interruption. Hence, a stochastic velocity prediction method for connected vehicles considering V2V communication interruption is put forward for the first time. ...Show More
Studying and analyzing battery aging behavior is crucial in battery health prognostic and management. This paper conducts novel and comprehensive experiments to evaluate battery aging under variable external stresses, including different dynamic load profiles and variable environmental temperatures. Respond analysis in the time and frequency domain is performed to account for the different aging r...Show More
State/temperature monitoring is one of the key requirements of battery management systems that facilitates efficient and intelligent management to ensure the safe operation of batteries in electrified transportation. This paper proposes an online end-to-end state monitoring method based on transferred multi-task learning. Measurement data is directly used for sharing information generation with th...Show More
Vehicle electrification, automation, and connectivity in today's transportation require significant efforts in control design to meet conflicting goals of energy efficiency, traffic safety, as well as comfort. The rapid development of intelligent transportation systems (ITS) and the rapid growth of connectivity technologies enable vehicles to receive more information about traffic conditions, whic...Show More
The early detection of soft internal short-circuit faults in lithium-ion battery packs is critical to ensuring the safe and reliable operation of electric vehicles. This article proposes a fault diagnosis method that can achieve the detection and assessment of soft internal short-circuit faults for lithium-ion battery packs. Specifically, based on the incremental capacity curve, fault features are...Show More
AC pulse heating is a promising preheating method for lithium-ion batteries due to its low energy cost and high efficiency. To avoid the lithium plating in the AC heating, upper bound of heating current (UBHC) should be obtained. In this paper, the dual RC model is developed, and coupled with the thermal model to predict the battery temperature and potential of negative electrode (PNE). PNE = 0 V ...Show More
Lithium-ion batteries have been widely used in electric vehicles. To ensure safety and reliability, accurate prediction of the battery’s future degradation trajectory is critical. However, early prediction capability and adaptive prediction capability under various battery aging conditions remain two main challenges. Either physics-based or data-driven methods have their advantages and limitations...Show More