European Conference on Nanoelectronics and Embedded Systems for Electric Mobility. Battery Management with Solar Powered Devices

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1 European Conference on Nanoelectronics and Embedded Systems for Electric Mobility emobility emotion th September 2013, Toulouse, France Battery Management with Solar Powered Devices Ovidiu Vermesan, Chief Scientist, SINTEF, Norway, Eliav Haskal, Director, Philips Research, Nederland

2 Objectives Improved battery chemistry, battery cell design and battery pack design for cost-efficient, predictable, reliable, safe, corrosion resistant and long life operation Improved and cost-efficient battery management systems (BMS) for ensuring specifications, including state-of-health (SoH) and state-of-charge (SoC) reporting, cell balancing and temperature stabilization Enhanced efficiency of the overall energy chain in the system, including maximization of system performance for both the application requirements and battery lifetime System integration of electronics with photovoltaic panels, PV optimization and the application of systems to allow support of the smart grid over the internet System and prototype designs for the demonstrator application of the Solar-powered Off-grid Street Lighting

3 BattMan Targets Design and develop Lithium battery-pack systems which manage photovoltaic power feed efficiently and deliver optimized, reliable, low-cost and predictable performance. Improved Li battery cell chemistry and battery pack design. Improved battery management systems (BMS) for ensuring specifications, including state-of-health (SoH) and state-of-charge (SoC) reporting, cell balancing and temperature stabilization. Enhanced efficiency of the overall energy chain in the system, including maximization of system performance for both the application requirements and battery lifetime.

4 BattMan Targets System integration of electronics with photovoltaic panels and the application of systems to allow support of the smart grid over the Internet. System and prototype designs for the demonstrator application of the Solar-powered Off-grid Street Lighting (OSL). Extend range of OSL to cold climates and higher latitude installations. Demonstration and reliability analyses, and design for improvement.

5 BattMan Project Partners BattMan is an EU collaboration of seven entities:

6 Research on Multiple OSL Options Single off-grid pole solution Battery pack, electronics and solar panel are mounted at each pole. Multiple off-grid pole solution Common battery pack and solar panel bank supply multiple poles. Hybrid solutions for off- and on-grid power, including demand/response through use of the solar energy Communication at each pole to allow for remote monitoring and commissioning For both single and multiple pole installations

7 Research Sun Light Electricity Light Electrics for controller Light fixture MPPT Battery Management System Driver Light Source Fixture End user Battery Sun Energy Energy converter Charge controller Energy storage Driver Light engine Applic ation 7

8 Research Sun Light Electricity Light Electrics for controller Light fixture MPPT Battery Management System Driver Light Source Fixture End user System level aspects Battery Sun Energy Energy converter Charge controller Energy storage Driver Light engine Applic ation 8

9 Eindhoven Testbed Three poles installed in Eindhoven Pole #1: 8000lm, 400W (Pb battery pack) reference pole Pole #2: 6000lm, 240W (Lithium battery pack) Pole #3: 3500lm, 205W (Pb battery pack)

10 BattMan Testbeds Installations of BattMan OSL in progress Eindhoven, the Netherlands Frederikstad, Norway Graz, Austria

11 Solar Irradiance

12 Energy Management Energy management optimization Develop an energy management system for optimizing energy conversion between different components and energy utilization at both component level and system level

13 Definition Phase Defining the prototypes and simulate the choice of components and functionality of the intended design at both component and system levels

14 Off-Grid Street Lighting System Off-grid Street Lighting system integration and prototyping Set up a prototype for a complete solar off-grid street lighting system by integrating the components developed and realized in previous tasks Develop and install a data acquisition system Define testing program and procedures. Day Night

15 Battery Management for OSL GPRS Module, Wireless CAN transceiver Suppressor Devices Suppressor devices Night Control I/CV Charger max 13A 28,4V 2x AS8506 VBAT 5/3.3V Level Balancer, Monitor 5V Temperature SW VBAT AS8530 VBAT + Cell Tabs Panel Voltage AS8510 LDO 24V Battery Driver Control MCU Battery SOC, SOH MPPT Lighting Control Communication Wireless + GPRS DCDC 24V to 12V

16 Communication Management for OSL Night

17 Questions & Answers Thank You!