Objective
PROJECT OBJECTIVES
In case of small PV systems with high stand-by reliability and low cycling demands to the storage system, i.e. emergency call box or environmental measuring systems, lithium-metal batteries seem to be very good candidates as storage batteries and significant advantages in comparison to lead acid batteries are existing. However, this type of rechargeable battery is in an early state of development and there are some parameters that should be optimized for photovoltaic applications. Additionally the batterThe wide operation temperature range of the lithium-metal batteries and the high energy density are other important features for outdoor and portable applications. So the idea of integrating the battery and the BMS at the backside if a PV module will give the opportunity to reduce installation costs and stimulate the development of new applications.
TECHNICAL APPROACH
Within this project the state of the art lithium-metal cells will be tested. Parameter tests and solar cycling tests will be carried out with single cells. The results will be used for the development of optimized small lithium-metal cells (AA size) for photovoltaic use. The specific energy, the cycle life, the self-discharge, and the shelf life are the key parameters to be improved.
Additionally a low cost battery management system for this cells will be developed. The development will be attended by numerical simulation.
The improved lithium-metal cell and the developed battery management system will be integrated at the backside of a photovoltaic module. Special consideration will be taken at the thermal behaviour of the battery. The developed system will be tested by field tests.
EXPECTED ACHIEVEMENTS
At the end of the project a lithium-metal cell with the following features will be available:
Size: AA
Nominal voltage: 3V
Energy density: 375 Wh/l, 175Wh/Kg
Shelf life: 2 years
Operation temperature: -30 C to + 50 C
Charging time: n 10h
Volume: 8 ml
Weight: 17 gram
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology environmental engineering energy and fuels renewable energy solar energy photovoltaic
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
89081 Ulm
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.