Supervisor: Dr. Mohammad Hossein Hamedi Advisor: Dr. Farschad Torabi Presenter: Siavash Azizi Date : 20 Sep 2015 Time: 11:45 to 12:30

1. In The Name Of God
Supervisor: Dr. Mohammad Hossein Hamedi
Advisor: Dr. Farschad Torabi
topic:
Simulation of Electrochemical Governing Equation o
Li-ion Batteries for HEVs with innovative algorithms
Presenter: Siavash Azizi
Date : 20 Sep 2015 Time: 11:45 to 12:30
Thesis Defense
Department of Mechanical Engineering
K.N.Toosi University of Technology

2. Table of Contents
 Introduction
 The importance of research
 History of work on Li-ion battery
 All kind of simulation
 Li-ion Battery Equation
 Assumption
 Semi-Analytical method I
 Result of Semi-Analytical method I
 Semi-Analytical method II
 System stability
 Result of Semi-Analytical method II
 Semi-Analytical method III
 Result of Semi-Analytical method III
2 25 December 2017

3.  Batteries
3 25 December 2017
Introduction I
Li-ion
Li-Polymer
Ni-MH
Lead-Acid
…
Primary batteries
Secondary batteries

4. 4 25 December 2017
Introduction II

5. Introduction III
5 25 December 2017
 Monitoring
 Companies
Concentration
Voltage
Current
A123 systems
Altairnano (Altair Nanotechnologies Inc.)
Axeon (Johnson Matthey Battery Systems)
Electrovaya
LG Chem Ltd.
Jonson control
Panasonic
…

6. The importance of research I
6 25 December 2017

7. The importance of research II
7 25 December 2017
 Car companies active in this field
TOYOTA-BMW-Mercedes Benz-Ford-Honda-
Renault
Brand Number of
Product
TOYOTA 9
BMW 3
M-B 2
Ford 2
Honda 3
Renault 3

8. The importance of research III
8 25 December 2017
91%
2%
7%
Li-ion
Li-Mn
Other
68%
32%
Li-ion
Ni-MH
 Car
 Bicycle

9. History of work on Li-ion battery
 Scientific works begin on 1912
 Rechargeable Li-ion for commercial 1970
 Safety problems
 Li-ion (carbon-Graphite) from Sony Co. 1991
 Simulation: Marc Doyle and John Newman
1996
 Simulation: C. Y. Wang
Jocelyn Sabatier
9 25 December 2017

10. `
All kind of simulation
 CFD
 Engineering
 Integral Transform
 …
10 25 December 2017
Semi-Analytical method
…

11. 25 December 201711
Li-ion Battery Equation






12. This work
12 25 December 2017
Low Cost - Low
Time

13. Assumption
IF no assumptions simplified=There is no analytic
solution
 C(x,t)=f(t).X(x)
 Diffusion Coefficients = cte
 Transfer Number of Li = cte
 Current j= cte
13 25 December 2017

14. Semi-Analytical method I
14 25 December 2017




15. Semi-Analytical method I
15 25 December 2017

16. Result of Semi-Analytical method I
16 25 December 2017
 Max Error 1.8 %

17. Cell Information
17 25 December 2017
Parameter Value
𝑳 𝟏𝟎𝟎 𝝁𝒎
𝒕 𝟎 𝟎. 𝟑𝟔𝟑
𝑨 𝟏𝟎𝟒𝟓𝟐 𝐜𝐦 𝟐
𝑫 𝒓𝒆𝒇 𝟐. 𝟔 × 𝟏𝟎−𝟔 𝒄𝒎 𝟐/𝒔
𝜺 𝒎 𝟎. 𝟑𝟑𝟐
𝜺 𝒑 𝟎. 𝟐𝟖𝟎

18. System stability I
18 25 December 2017

19. System stability II
19 25 December 2017

20. System stability III
20 25 December 2017

21. Result of Semi-Analytical method I
21 25 December 2017
 Max Error 2.25 %
 Max Error 11.5 %
(20log(a)=11.5 a=3.8%)

22. Result of Semi-Analytical method I
22 25 December 2017

23. Semi-Analytical method II
23 25 December 2017




24. Result of Semi-Analytical method II
24 25 December 2017
 Error 1.9 %

25. Semi-Analytical method III
25 25 December 2017




26. Result of Semi-Analytical method III
 5 sec
 Error 2.3%
26 25 December 2017
 40 sec
 Error 0.8%

27. Conclusions
 New Enginnering
method:
27 25 December 2017
 Reduce cost
 Reduce Time
 Higher Error

28. Senior work offers
25 December 201728
 Solving Electrochemical and Heat behavior
coupled
 Design program for pack of HEVs battery
 Solving Electrochemical behavior in the Pb-Acid
 Current j is not constant

29. Scientific evidence derived from this work
25 December 201729
1- New method for solving equations that govern electrochemical hybrid-
electric vehicle lithium-ion batteries used in space time
• Third Universal Conference on Environment, Energy and biological
defense to No. EN101404240 - Printed
• A1 Cert Academy No: A-1-1561
• PCMS Academy No: IR-EN^3 123
• DNW No: 241001439
2- Solving equations that govern electrochemical hybrid-electric vehicle
lithium-ion batteries with Ritz method
• First conference on chemistry, Chemistry Engineering & industrial N0.
11233 arak Iran – Printed
3- New method for solving equations that govern electrochemical lithium-ion
batteries used in space time
• Tarbiyat Modares Mechanic Journal - accepted

30. References
25 December 201730
Authors Subject Year
Jocelyn Sabatier et all Lithium-ion batteries modeling involving fractional differentiation 2014
Meng Xu et all Two-dimensional electrochemical–thermal coupled modeling of
cylindrical LiFePO4 batteries
2014
Jocelyn Sabatier et all Lithium-ion batteries modeling: A simple fractional differentiation
based model and its associated parameters estimation method
2014
Kuan-Cheng Chiu et
all
An electrochemical modeling of lithium-ion battery nail penetration 2013
Á.G. Miranda and C.W.
Hong
integrated modeling for the cyclic behavior of high power Li-ion
batteries under extended operating conditions
2013
Meirong Yuan et all Electrochemical Performance of Lithium Ion Capacitors with
Different Types of Negative Electrodes
2012
Chao-Yang Wang et
all
Model-Based Electrochemical Estimation of Lithium-Ion Batteries 2012
Nalin A. Chaturvedi et
all
Modeling, estimation, and control challenges for lithium-ion
batteries
2010
Martin Sommer et all Electrochemical Modeling of a single Li-Ion cell 2010

31. 31 25 December 2017
Thank you for your attention