Energy-Efficient Electric and Hybrid Vehicles

Electric vehicles (EVs) and hybrids rely heavily on multiple power converters for various functions. They transform power  from the battery to drive the motor, or to other electrical components such as windows, audio, and climate control systems, for example, converting to the required DC or AC voltage levels. All those conversions can be inefficient and waste energy, thus affecting vehicle performance and range.

Daanaa’s Power Transaction Unit (PTU) introduces a power system solution, integrating 10+ functions into a single unit, while enabling new capabilities, such as VIPVs, AC batteries, and Vehicle-to-Everything (V2X) wireless charging. Each PTU becomes a normalized node within the vehicle power system to simplify and scale power system design, enhance efficiency, and streamline operations. It works with different battery chemistries, enhancing range and lifespan in electric vehicles. Integrated at the cell level, it enables advanced features such as high voltage conversion, bidirectional power flow, and continuous state of charge monitoring, ensuring safety, reliability, and adaptability while reducing weight and enhancing performance across various applications.

• Ultra-high voltage conversion ratio. Constant high voltage is available regardless of the number of cells. Fewer battery cells are needed in series (connection) to reach high operating voltages: for example, direct conversion from cell to 400 VDC and ability to go over 800 VDC.

• Real-time, programmable control of voltage amplitude and phase/frequency.
• Cell-level control and diagnostics in real-time. Banks consisting of a few battery cells, instead of 10s and 100s, can be monitored and controlled in real-time to adjust to changes in operating conditions.
• Horizontal/distributed power scaling instead of vertical scaling. Improve power distribution reliability and resilience by aggregating power from distributed parallel cell banks instead of long serial strings of battery cells.
• Battery cell and chemistry independence. Aggregate power from different type of cells (e.g., different chemistry and/or different sizes) or cells in different SOH (state of health) or SOC (state of charge). Programmable constant output voltage independent of the cell’s SOH and SOC.
• Dynamic load balancing. Dynamically distribute charging and/or discharging across an array of battery cell banks.
• Flexible battery performance and cost optimization. Balance mix of low-cost battery cells with high performance, higher cost battery cells based on target application.