• • • ELECTRIC VEHICLES• • •
help accelerate the market’s shift toward a low carbon, sustainable future for personal mobility. The key to designing and enabling such battery solutions with wBMS are system understanding as well as methods and tools that support the design and technologies as described before. AVL offers the full range of simulation, testing, engineering capabilities, and experience to successfully drive these innovations together with their customers and bring them into the market by making them ready for series production. AVL is currently strongly working on battery ecosystem solutions through developing data analytics methodologies, predictive functionalities supported by using virtual development, and vehicle and battery data in order to increase the lifetime and performance of batteries. Together with ADI, AVL is working to provide smarter BMS solutions to their customers all over the world by combining the strength of both companies.
Complete Solutions for wBMS by ADI
The wireless network protocol implemented by ADI in the wBMS system has the automotive industry’s requirement for reliability, safety, and security under all operating conditions based on the network-wide time synchronisation technology. The use of the wBMS in a mass production EV from General Motors is a proof of its reliability in the harshest environments: the wBMS-based battery has been run over hundreds of thousands of kilometres in more than 100 test vehicles, on- road and off-road, and in environments ranging from a desert to the frozen north and under the toughest conditions. With the wBMS, ADI also supports automotive manufacturers’ programmes in compliance with the ISO 26262 functional safety standard. The radio technology and the networking protocol have been developed in such a way that the system is resilient in noisy environments and provides secure communication between the monitoring units and the manager using a sophisticated encryption technology. The security measures avoid spoofing of data transmitted on the wireless network by an unintended recipient such as a criminal or hacker. Furthermore, the transmitted data are received without any
modification of the contents, and the intended recipient knows exactly which source has sent a message.
Lifetime management of the
value of the battery Across the entire battery pack’s lifetime, from initial assembly through disposal to second life, the wBMS capability embedded in the battery pack ensures that the vehicle’s manufacturer and its owner can easily track the condition of the battery, maintain the performance and safety, and maximise the value.
The entire system, including the interactions between the battery modules’ cell monitoring units and the ECU, is handled by ADI’s technology, with configuration settings defined by the manufacturer. The wBMS technology is also backed by ADI’s
battery lifecycle insight service (BLIS) technology. This provides edge-based and cloud-based data software to support traceability, production optimisation, monitoring in storage and transit, early failure detection, and lifetime extension. Together, the wBMS and BLIS technologies enable automotive manufacturers to gain higher returns on their investments in battery pack development and production, improve the economics of their EV business strategies, and
About the authors
Stephan Prüfling,
M.Sc., studied industrial engineering and electrical engineering with focus on e-mobility and energy grids. He joined AVL in 2016 and is a product manager for e- drive component solutions such as e-motors and power electronics. Currently, his major focus is product management for battery management solutions and leading innovation projects in this field. Norbert Bieler is an electrical engineer with a focus on microelectronics and 25 years of combined experience in automotive management at Siemens VDO, Continental Automotive, and Analog Devices. Norbert’s expertise lies in vehicle systems, architectures, and functions as well as electronics for the interior, chassis, and powertrain. His focus in the past 15 years has been on hybridisation and electrification of the overall vehicle drivetrain. He leads business development and strategy, along with development of e-mobility projects that define new technologies and innovations for car manufacturers, Tier 1s, and strategic partner networks.
18 ELECTRICAL ENGINEERING • JUNE 2023
electricalengineeringmagazine.co.uk
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