Abstract The desire for energy-dense and fast-charged battery technology in consumer electronics, electric vehicle, grid, aviation applications is pushing the envelope from materials to cell pack designs. However, some approaches could inherently decrease safety of battery—thus requiring development advanced management diagnostics. Safety lithium-ion batteries (LiBs), particularly multicell con...

A state-space model for Li-ion battery packs with parallel-connected cells is introduced. The key feature of the an explicit solution to Kirchhoff’s laws packs, which expresses branch currents directly in terms model’s states, applied current, and cell resistances. This avoids need solve these equations numerically. To illustrate potential proposed pack-level control estimation, a method bound ...

Abstract: Battery-operated systems are always concerned about the proper management and sizing of a battery. A Traditional Battery Management System (BMS) only includes battery-aware task scheduling based on the discharge characteristics of a whole battery pack and do not take into account the mode of the load being served by the battery. On the other hand, an efficient and intelligent BMS shou...

Battery thermal management systems (BTMS) are hugely important in enhancing the lifecycle of batteries and promoting development electric vehicles. The cooling effect BTMS can be improved by optimizing its structural parameters. In this paper, flow resistance heat dissipation models were used to optimize structure BTMS, which more efficient than computational fluid dynamics method. Subsequently...

The transition to non-fossil fuels brings with its basic challenges in battery technologies. Due their efficiency, one of the areas where Li-ion batteries are widely used is electric vehicles (EVs). Range estimation most important needs a battery-powered vehicle (BEV). range BEVs directly depends on capacity and powertrain efficiency. Although electrical performance has significantly improved, ...

The increase in the average global temperature is a consequence of high greenhouse gas emissions. Therefore, using alternative energy carriers that can replace fossil fuels, especially for automotive applications, importance. Introducing more electronics into an battery pack provides precise control and increases available from pack. Battery-integrated modular multilevel converters (BI-MMCs) ha...

A combined simulation and testing approach has been developed to evaluate battery packs in real driving conditions as opposed to purely experimental testing. The new approach is costeffective, greatly accelerates battery development cycle, and enables innovative battery design and optimization. Several fundamental models for valve-regulated lead-acid (VRLA), nickel-metal hydride (NiMH), and Li-...

This paper proposes a positive temperature coefficient (PTC) self-heating method, in which EVs can be operated independently of external power source at low temperature, with a lithium-ion battery (LIB) pack discharging electricity to provide PTC material with power. Three comparative heating experiments have been carried out respectively. With charge/discharge tests implemented, results demons...