A battery management system (BMS) continuously monitors the state of charge (SoC) and state of health (SoH) of the battery cells to ensure maximum performance and service life. Sophisticated balancing algorithms ensure an even load on all cells and prevent premature wear. Our BMS portfolio includes solutions for 12V, 48V, 400V and 800V systems and enables flexible integration into different vehicle types and is designed for a wide range of cell chemistries such as LiFePO4 (LFP), NMC/NCM or LTO. Thanks to the use of state-of-the-art ICs from leading manufacturers, our systems offer outstanding accuracy and reliability. Our solutions are also cost-optimized and offer high performance to meet the requirements of the automotive industry. Safety functions such as temperature monitoring, current limiting and over/under voltage protection are integrated to ensure maximum operational safety. Our BMS solutions are scalable and can be adapted to specific customer requirements to cover different applications. In addition to the hardware, the battery management systems can be developed with customized high- and/or low-level software, taking into account the latest cyber security requirements.
Preh is one of the pioneers in the field of battery management and has been successfully active in the mass production business since the first hybrid and electric vehicles of a southern German OEM. Our systems are successfully in series production at several well-known OEMs worldwide.
These versatile systems enable efficient energy management and contribute to increasing the vehicle's range and performance.
An effective BMS is necessary for:
Modern battery management systems are equipped with a variety of technologies, including:
BMS are not only used in electric and hybrid vehicles, but also in stationary energy storage systems, portable devices and industrial applications. They are crucial for the development of sustainable energy supply solutions and make a significant contribution to the energy transition. Our battery management systems are also essential in lithium-ion based starter batteries for safe and reliable functionality.
We laid our foundations in the field of electromobility in 2008, at a time when electric cars still played virtually no role. In 2011, we went into series production with the first battery management systems for an electric compact car and an electric sports car. This was followed just two years later by the establishment of our own “e-mobility” product area. To date, the requirements for battery management systems have of course expanded significantly and we are also constantly evolving. In addition to solutions for purely electric cars, we are also developing 48-volt BMS systems for hybrids and working on 12-volt solutions.
