Summary
- Mercedes experimenting with multiple-chemistry battery packs
- Uses new type of micro-converter and parallel connection of battery cells
- Improves battery pack performance, modularity, and space efficiency
- Programmable micro-converter for wireless control and individual cell pair adjustment
- Allows for constant high voltage output and potential for modular battery packs with multiple chemistries
Article
Mercedes Introduces Multi-Chemistry Battery Packs
Mercedes is leading the way in innovation with its new multi-chemistry battery packs that incorporate more than one type of cell. By utilizing a new micro-converter and connecting the battery cells in parallel rather than in series, Mercedes is able to enhance battery pack performance, modularity, and space efficiency.
Programmable Micro-Converter for Advanced Battery Control
At the Mercedes Future Experience event, the company unveiled a groundbreaking programmable micro-converter that allows for precise control over a battery pack. This micro-converter can be wirelessly controlled and embedded into the battery pack, enabling individual cell pair adjustments. By connecting cells in parallel, Mercedes can achieve better charge balance, isolate damaged cells, and perform accurate battery health checks.
Constant Voltage Regardless of State of Charge
The new micro-converter technology developed by Mercedes can keep the total battery pack voltage constant, regardless of the state of charge. This constant voltage output of 800 volts is independent of the number of cells in series, allowing for more modular battery packs and efficient space utilization. If implemented in production, automakers could benefit from increased standardization and modularization, leading to cost savings on a large scale.
Combining LFP and NMC Cells for Optimal Performance
Mercedes is also exploring the possibility of using multiple battery chemistries within the same pack, such as LFP and NMC cells. LFP batteries are known for their ability to withstand regular fast charging with minimal degradation, while NMC batteries offer higher current storage capacity. By combining both types of cells, Mercedes aims to leverage the strengths of each chemistry for optimal performance in future electric vehicles.
Advantages of Multi-Chemistry Battery Packs
The potential benefits of integrating LFP and NMC cells in the same battery pack include improved fast charging capabilities, enhanced thermal stability, and cost-effectiveness. With this innovative approach, Mercedes could pave the way for more efficient and versatile battery packs that cater to a wide range of EV applications.
Future Prospects and Industry Impact
While Mercedes’ multi-chemistry battery pack technology is still in the early stages of testing, it holds great promise for the future of electric vehicles. By pushing the boundaries of battery innovation, Mercedes is setting new standards for performance, efficiency, and sustainability in the automotive industry. As automakers and consumers alike look towards a greener and more sustainable future, advancements in battery technology like those seen from Mercedes are sure to play a key role in driving the electric vehicle revolution forward.
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