FP7-2011-ICT-GC

Duration: 36 months

SMART-LIC – Smart and Compact Battery Management System Module for Integration into Lithium-Ion Cell for Fully Electric Vehicles

GREENCAR – SMART-LIC Project

Period 1

Publishable summary report

Revision: 1.0

Due date: month

Actual submission date: Lead partner: ST Microelectronics S.A.

Dissemination level

PU Public

PP Restricted to other program participants (including the Commission Services)

RE Restricted to a group specified by the consortium (including the Commission Services)

CO Confidential, only for members of the consortium (including the Commission Services) X

Contents

1.1 Introduction ...................................................................................................................... 3

1.2 Non-publishable information ........................................................................................... 3

1.3 Project summary ............................................................................................................... 4

1.1 Contribution and collaboration within the project ........................................................... 6

1.2 Project objectives for the period....................................................................................... 7

1.3 Work progress and achievements during the year one ..................................................... 8

1.4 Expected final results ....................................................................................................... 9

1.5 Appendices ..................................................................................................................... 10

1. Acronyms.................................................................................................................... 10

2. Publication .................................................................................................................. 11

1.1 Introduction

The SMART_LIC Project addresses the development of a new Battery Management System Module, for integration into Lithium-Ion Cell for Fully Electric Vehicles.

The target achievements are obtained realizing the BMS module as a system-in-package (SiP) directly integrated into the cell for fully electric vehicles, by means of advanced packaging technologies.

This document contains the measurable goals of the Period 1 related to WP1:

• Application scenario and system requirements defined

• Battery / cell models defined

The application scenario definition starts from the State-of-the-Art on existing solutions for the addressed developments; in this section, are also listed and described a set of parameters to be taken into account for the purposed development.

Furthermore, the document provides the needed information about compliance with standard automotive requirements.

1.2 Non-publishable information

Intermediate report after T0+12:

• Application scenario and system requirements defined

• Battery / cell models defined

So that, the dissemination level of this deliverable is Public.

1.3 Project summary

Partners:

Figure1.1 Main role of the different partners in the consortium

The project is organized in 6 Work Packages.

Figure 1.2 Project Work Breakdown Structure with interaction of different work packages (V-model)

1.1 Contribution and collaboration within the project

Figure1.3 Contribution & Collaboration within the p roject

This section defines frame of requirements and specifications for Work Package 1 and then consequently for the other Work Packages defining components and modules.

Purpose of WP1 is also to define the requirements framework for the overall project: in particular it has been debated the optimal architecture for SMART-LIC implementation. Target of this analysis is to consider the best trade off in term of cost and performance between State of the Art BMS and different SMART-LIC implementations. The following parameters have been considered to carry on this analysis: 1) Life time of the battery (with and w/o SMART-LIC); 2) Cost of ownership (with and w/o SMART-LIC); 3) Efficiency and losses of module (with and w/o SMART-LIC). First point of this analysis is the identification of the optimal granularity of the SMART-LIC module defined as the number of lithium-ion cell integrated in the single module. Introducing a BMS module at Cell Level provides more accurate SoH and SoC monitoring, enabling higher performances in term of life time and reducing the maintenance cost but introduces also some drawbacks in term of higher BoM and efficiency/losses. The analysis will be completed insideWP2.

Potential impact and use

Smart-LIC has potential to contribute on batteries pack improvement especially on Lithium-Ion cell and reduction of the TCO.

Main expected impacts are on the possibility to

a) Allow deviations in cell productions and use with individual control of cells during operation

b) Individual cell balancing and temperature management independent from location of installation in the vehicle

1.2 Project objectives for the period

Except from the description of Work are presented to show the project objectives for this reporting period. Objectives for the second period are not presented.

• Identification, analysis extraction and definition of characteristic application scenarios • Identification of cost determining factors in a battery system • Definition of the requirements for the smart battery architecture • Definition of the cell balancing strategy • Development if a battery/cell model implementable in the microprocessors distributed in

the cells • Development of a real-time parameter extraction strategy for battery model

parameterization, identification of the battery key parameters to be monitored, and definition of an optimized method for determining the state of charge

• Assessment of design, material and process needs for smart systems packaging and integration

• Characterization of the conditions for the inner-battery communication by wire or RFID and definition of the requirement

Deliverable D 1.1: Application scenario and system requirements

• Study on the application scenarios of the battery systems in FEV, specification of the consequences on cell level, definition of requirements of the overall BMS ensemble

• Analysis of current BMS and the balancing solutions (functionalities & shortfalls), specification of the development and improvement targets

• Review of the existing System in Package SiP and module integration solutions and specification of the requirements for the solution to be developed

• Study and assess the options of wired, optical, wireless communication systems or combinations of them and evaluate the conditions of electro-magnetic compatibility within the cell

Deliverable D1.2: Battery / cell models

• Identify and assess the requirements on the cell model depending on the battery technology and specify the cell type used in the project under industrial expert review and guidance

• Evaluate the existing battery / cell models, develop the methods for determining the SOC, temperature, and aging characteristics of the battery cell

• Perform the simplification for microprocessor implementation

1.3 Work progress and achievements during the year one

• Achievement of the deliverable 1.1”Report detailing system specification and requirements” related to Work Package 1 (WP1).

• Identification of the state of the art and suitable actions especially for the BMS

• Identification of the potential sources of failure

• Consortium about the wireless technology to adopt for the communication

• Integration of the standard automotive concerning safety requirements

• First phase of R&D work dissemination of the project Smart-LIC in the context of the standardization by STMicroelectronics.

• A website for the promotion of Smart-LIC and exchange of information within the consortium is available at www.smart-lic.com . The theme of the website is reflected in a printed folder and a PowerPoint slide show.

• Consortium Agreement signed

• Project communication set up

• Web-Site(s) done / progressing

• Several presentations to public done

• Project progress and expenses in line with initial plan

Plus/minus points:

• No significant changes in planning/results

• Communication very well in the consortium

• High motivation of partners

• Smart-LIC electronics still expensive – optimization ongoing

• Added values of new technologies integration

1.4 Expected final results

Reduced cost of ownership of traction batteries in e-mobility usage

1.5 Appendices

1. Acronyms

BEV Battery Electric Vehicle BMS Battery Management System BoL Beginning of Life BoM Bill of materials BP Battery Pack BS Battery System CS Cooling System CTE Coefficient of Thermal Expansion DoD Depth of Discharge E Elastic Modulus EIS Electrochemical Impedance Spectroscopy EMC Epoxy Moulding Compound EMF ??? EoL End of Life EPI Electric Power Interface FEV Full Electric Vehicle HV High Voltage LDV Light Delivery Vehicle LTCC Low Temperature Cofired Ceramic NEDC New European Driving Cycle o.s.l. over sea level PA66 Polyamide 66 PBT Polybutylene Terephthalate PLC Power Line Communication PHEV Plug-in Electric vehicles PI Power Integrity RFID Radio Frequency IDentification SI Signal Integrity SiP System-in-Package SoC State of Charge SoF State of Function SoH State of Health SoL State of Life TC Thermal Conductivity Tg Glass Transition Temperature VMU Vehicle management System

2. Publication

16th International Forum on Advanced Microsystems for Automotive

Applications (AMAA 2012), Berlin, Germany, May 30, 2012.