File size: 4,400 Bytes
0c0a4be | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | %% Parameters for Lithium-Ion Battery Pack cooling example
% Battery cooling example setup and workspace variables
%
% Copyright 2021-2026 The MathWorks, Inc.
%
samplingTime=1; % Sampling time (s)
ambient=300; % Ambient temperature in K
coolantTemp=300; % Coolant inlet temperature in K
initialPackSOC=0.9; % Pack intial SOC (-)
% -------------------------------------------------------------------------
%% Cell Electrical
T_vec=[278 293 313]; % Temperature vector T [K]
AH=27.8; % Cell capacity AH [Ahr]
SOC_vec=[0 0.1 0.25 0.5 0.75 0.9 1]; % Cell state of charge vector SOC [-]
%
V0_mat=[
3.4966 3.5057 3.5148
3.5519 3.5660 3.5653
3.6183 3.6337 3.6402
3.7066 3.7127 3.7213
3.9131 3.9259 3.9376
4.0748 4.0777 4.0821
4.1923 4.1928 4.1930]; % [V] Em open-circuit voltage vs SOC rows and T columns
R0_mat=[
0.0117 0.0085 0.0090
0.0110 0.0085 0.0090
0.0114 0.0087 0.0092
0.0107 0.0082 0.0088
0.0107 0.0083 0.0091
0.0113 0.0085 0.0089
0.0116 0.0085 0.0089]; % [Ohm] R0 resistance vs SOC rows and T columns
R1_mat=[
0.0109 0.0029 0.0013
0.0069 0.0024 0.0012
0.0047 0.0026 0.0013
0.0034 0.0016 0.0010
0.0033 0.0023 0.0014
0.0033 0.0018 0.0011
0.0028 0.0017 0.0011]; % [Ohm] R1 Resistance vs SOC rows and T columns
C1_mat=[
1913.6 12447 30609
4625.7 18872 32995
23306 40764 47535
10736 18721 26325
18036 33630 48274
12251 18360 26839
9022.9 23394 30606]; % [F] C1 Capacitance vs SOC rows and T columns
Tau1_mat=R1_mat.*C1_mat;
Ndisc=100;delV0=0;delR0=0;delR1=0;delR2=0;delAH0=0; % No change with cycling, not used in simulation
% -------------------------------------------------------------------------
%% Cell Thermal
MdotCp=100; % Cell thermal mass (mass times specific heat [J/K])
K_cell=0.8; % Cell thermal conductivity [W/(m*K)]
h_cell=2; % Heat transfer coefficient to ambient [W/(m^2*K)]
% -------------------------------------------------------------------------
%% Module Electrical
R12=2e-3; % Module1-to-module2 connection resistance
cell_H=0.20; % Cell height [m]
cell_W=0.12; % Cell width [m]
cell_T=0.02; % Cell thickness [m]
Ns1=10; % Module-1 Number of series connected strings
Np1=1; % Module-1 Number of parallel cells per string
Rext1=1e-3; % Module-1 Accessory total resistance
Ns2=Ns1; % Module-2 Number of series connected strings
Np2=Np1; % Module-2 Number of parallel cells per string
Rext2=Rext1; % Module-2 Accessory total resistance
% -------------------------------------------------------------------------
%% Module Thermal
Flowrate_vec=[0 0.02 0.04 0.06 0.08 0.10]; % Flowrate vector L [kg/s]
lenF=size(Flowrate_vec,2);lenT=size(T_vec,2);% Temporary variables for size
Q1=1.2*ones(lenT,lenF,Ns1*Np1); % Module-1 Effective rate of coolant heat transfer from each cell
extQ1=zeros(1,Ns1*Np1); % Module-1 Cell-to-Cell External Heat variation
Q2=Q1; % Module-2 Effective rate of coolant heat transfer from each cell
extQ2=extQ1; % Module-2 Cell-to-Cell External Heat variation
%% Cell-to-cell variation
iniT1=ambient*ones(1,Ns1*Np1); % Module-1 Cell-to-Cell initial Temperature variation
iniSOC1=initialPackSOC*ones(1,Ns1*Np1); % Module-1 Cell-to-Cell initial SOC variation
iniR01=ones(1,Ns1*Np1); % Module-1 Cell-to-Cell Terminal Resistance variation
iniAH1=ones(1,Ns1*Np1); % Module-1 Cell-to-Cell capacity variation vector
iniT2=iniT1; % Module-2 Cell-to-Cell initial Temperature variation
iniSOC2=iniSOC1; % Module-2 Cell-to-Cell initial SOC variation
iniR02=iniR01; % Module-2 Cell-to-Cell Terminal Resistance variation
iniAH2=iniAH1; % Module-2 Cell-to-Cell capacity variation vector
% One of the cell (1st cell of the first module) has higher R0 than the other cells
iniR01(1,1)=1.05;
% One of the cell (3rd cell of second module) has lower R0 than other cells
iniR02(1,3)=0.97;
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