Mechanical durability and electrical durability of an aluminium-laminated lithium-ion polymer battery pack for a hybrid electric vehicle

Abstract

Lithium-ion polymer batteries of aluminium-laminated packaging structure have advantages in terms of thermal characteristics and safety but have a weak configuration with respect to external forces compared with other types of cells such as cylindrical and prismatic cells. Thus it is important to protect the batteries of the aluminium-laminated packaging structure under the severe conditions encountered in vehicle operation where excessive mechanical impacts and vibrations may affect the battery system. In this work, an energy storage system for a hybrid electric vehicle (HEV) has been developed using lithium-ion polymer battery cells with an aluminium-laminated packaging structure and has been tested for structural and electrical durabilities. The test results of combined accelerated vibration and charge-discharge cycling are presented to prove that the battery pack has the durability to satisfy vehicle standards. Three different types of test method have been applied to evaluate the mechanical and electrical durabilities. It was observed that the HEV battery pack satisfied the durability standards required for vehicle applications. The results imply that an aluminiumlaminated cell packaging structure can be a competitive option for physical configuration of cells for vehicle applications.

System-level management of rechargeable lithium-ion batteries

“…Even though mechanical vibration of the battery pack seems to be more relevant to design for durability and longevity [68], it also needs to be taken into account for battery SOH estimation. As the pack system ages due to various reasons in addition to battery aging, maximum forced response levels for the system with and without parameter variations [69] may change.…”

Characterization of the Compressive Load on a Lithium-Ion Battery for Electric Vehicle Application

“…The lithium-ion batteries' performance and mechanical properties could be severely affected by the acceleration inertia, road irregularity, and abrupt crash. In recent years, the effect of mechanical vibration on lithium-ion batteries has attracted more and more consideration from researchers [12]. The research was presented to specify the durability of commercially available battery cells and determines both the mechanical and electrical vibration-induced degradation via quantifying alterations in battery cell natural frequency, impedance, and capacity.…”

Review of energy storage technologies in harsh environment

“…Basically, the effect of vibration can be prevented by improving layout and structure of battery pack design (Kume and Murakami n.d.). Successful design of the reliability in mechanics and electrics for the battery pack structure have been achieved by different researchers and institute (Arora et al 2016;Lee et al 2010).…”