%% Parameters for ev_thermal_management % % Copyright 2020-2026 The MathWorks, Inc. % Configure scenario (see code): % (1) drive cycle, set == 1 % (2) cool down, set == 2 % (3) cold weather, set == 3 user_selection = 3; if user_selection == 1 scenario = 'drive cycle'; elseif user_selection == 2 scenario = 'cool down'; elseif user_selection == 3 scenario = 'cold weather'; else scenario = 'none'; end % %% Initial conditions cabin_p_init = 0.101325; % [MPa] Initial air pressure cabin_T_init = 30; % [degC] Initial air temperature cabin_RH_init = 0.4; % Initial relative humidity cabin_CO2_init = 4e-4; % Initial CO2 mole fraction coolant_p_init = 0.101325; % [MPa] Initial coolant pressure coolant_T_init = 30; % [degC] Initial coolant temperature refrigerant_p_init = 0.8; % [MPa] Initial refrigerant pressure refrigerant_alpha_init = 0.6; % Initial refrigerant vapor void fraction battery_T_init = 30; % [degC] Initial battery temperature battery_SOC_init = 0.95; % [-] Initial state of charge of the battery %% Vehicle Cabin cabin_duct_area = 0.04; % [m^2] Air duct cross-sectional area %% Liquid Coolant System coolant_pipe_D = 0.019; % [m] Coolant pipe diameter coolant_channel_D = 0.0092; % [m] Coolant jacket channels diameter coolant_valve_displacement = 0.0063; % [m] Max spool displacement coolant_valve_offset = 0.001; % [m] Orifice opening offset when spool is neutral coolant_valve_D_ratio_max = 0.95; % Max orifice diameter to pipe diameter ratio coolant_valve_D_ratio_min = 1e-3; % Leakage orifice diameter to pipe diameter ratio pump_displacement = 0.02; % [l/rev] Coolant pump volumetric displacement pump_speed_max = 1000; % [rpm] Coolant pump max shaft speed coolant_tank_volume = 2.5 / 2; % [l] Volume of each coolant tank coolant_tank_area = 0.11^2; % [m^2] Area of one side of coolant tank %% Refrigeration System refrigerant_pipe_D = 0.01; % [m] Refrigerant pipe diameter % Compressor map table compressor_p_ratio_LUT = [0; 1; 4.28795213348131; 7.57590426696263; 10.8638564004439; 14.1518085339253]; % Pressure ratio compressor_rpm_LUT = [0, 1800, 3600]; % [rpm] Shaft speed compressor_mdot_corr_LUT = [ 0, 0, 0; 0, 0.0114121796814927, 0.0228243593629856; 0, 0.00855913476111960, 0.0171182695222391; 0, 0.00570608984074638, 0.0114121796814927; 0, 0.00285304492037319, 0.00570608984074636; 0, 0, 0]; % [kg/s] Corrected mass flow rate %% Radiator radiator_L = 0.6; % [m] Overall radiator length radiator_W = 0.015; % [m] Overall radiator width radiator_H = 0.2; % [m] Overal radiator height radiator_N_tubes = 25; % Number of coolant tubes radiator_tube_H = 0.0015; % [m] Height of each coolant tube radiator_fin_spacing = 0.002; % Fin spacing radiator_wall_thickness = 1e-4; % [m] Material thickness radiator_wall_conductivity = 240; % [W/m/K] Material thermal conductivity radiator_gap_H = (radiator_H - radiator_N_tubes*radiator_tube_H) / (radiator_N_tubes - 1); % [m] Height between coolant tubes radiator_air_area_flow = (radiator_N_tubes - 1) * radiator_L * radiator_gap_H; % [m^2] Air flow cross-sectional area radiator_air_area_primary = 2 * (radiator_N_tubes - 1) * radiator_W * (radiator_L + radiator_gap_H); % [m^2] Primary air heat transfer surface area radiator_N_fins = (radiator_N_tubes - 1) * radiator_L / radiator_fin_spacing; % Total number of fins radiator_air_area_fins = 2 * radiator_N_fins * radiator_W * radiator_gap_H; % [m^2] Total fin surface area radiator_tube_Leq = 2*(radiator_H + 20*radiator_tube_H*radiator_N_tubes); % [m] Additional equivalent tube length for losses due to manifold and splits fan_area = 0.25 * 2; % [m^2] Fan flow area (2 fans) %% Condenser condenser_L = 0.63 * 2; % [m] Overall condenser length (2 condensers) condenser_W = 0.015; % [m] Overall condenser width condenser_H = 0.39; % [m] Overall condenser height condenser_N_tubes = 40; % Number of refrigerant tubes condenser_N_tube_channels = 12; % Number of channels per refrigerant tube condenser_tube_H = 0.002; % [m] Height of each refrigerant tube condenser_fin_spacing = 0.0005; % [m] Fin spacing condenser_wall_thickness = 1e-4; % [m] Material thickness condenser_wall_conductivity = 240; % [W/m/K] Material thermal conductivity condenser_gap_H = (condenser_H - condenser_N_tubes*condenser_tube_H) / (condenser_N_tubes - 1); % [m] Height between refrigerant tubes condenser_air_area_flow = (condenser_N_tubes - 1) * condenser_L * condenser_gap_H; % [m^2] Air flow cross-sectional area condenser_air_area_primary = 2 * (condenser_N_tubes - 1) * condenser_W * (condenser_L + condenser_gap_H); % [m^2] Primary air heat transfer surface area condenser_N_fins = (condenser_N_tubes - 1) * condenser_L / condenser_fin_spacing; % Total number of fins condenser_air_area_fins = 2 * condenser_N_fins * condenser_W * condenser_gap_H; % [m^2] Total fin surface area condenser_tube_area_webs = 2 * condenser_N_tubes * (condenser_N_tube_channels - 1) * condenser_tube_H * condenser_L; % [m^2] Total surface area of webs in refrigerant tubes condenser_tube_Leq = 2*(condenser_H + 20*condenser_tube_H*condenser_N_tubes) ... + (condenser_N_tube_channels - 1)*condenser_L*condenser_tube_H/(condenser_W + condenser_tube_H); % [m] Additional equivalent tube length for losses due to manifold, splits, and webs %% Evaporator evaporator_L = 0.63; % [m] Overall evaporator length evaporator_W = 0.015; % [m] Overall evaporator width evaporator_H = 0.2; % [m] Overall evaporator height evaporator_N_tubes = 20; % Number of refrigerant tubes evaporator_N_tube_channels = 12; % Number of channels per refrigerant tube evaporator_tube_H = 0.002; % [m] Height of each refrigerant tube evaporator_fin_spacing = 0.0005; % Fin spacing evaporator_wall_thickness = 1e-4; % [m] Material thickness evaporator_wall_conductivity = 240; % [W/m/K] Material thermal conductivity evaporator_gap_H = (evaporator_H - evaporator_N_tubes*evaporator_tube_H) / (evaporator_N_tubes - 1); % [m] Height between refrigerant tubes evaporator_air_area_flow = (evaporator_N_tubes - 1) * evaporator_L * evaporator_gap_H; % [m^2] Air flow cross-sectional area evaporator_air_area_primary = 2 * (evaporator_N_tubes - 1) * evaporator_W * (evaporator_L + evaporator_gap_H); % [m^2] Primary air heat transfer surface area evaporator_N_fins = (evaporator_N_tubes - 1) * evaporator_L / evaporator_fin_spacing; % Total number of fins evaporator_air_area_fins = 2 * evaporator_N_fins * evaporator_W * evaporator_gap_H; % [m^2] Total fin surface area evaporator_tube_area_webs = 2 * evaporator_N_tubes * (evaporator_N_tube_channels - 1) * evaporator_L * evaporator_tube_H; % [m^2] Total surface area of webs in refrigerant tubes evaporator_tube_Leq = 2*(evaporator_H + 20*evaporator_tube_H*evaporator_N_tubes); ... + (evaporator_N_tube_channels - 1)*evaporator_L*evaporator_tube_H/(evaporator_W + evaporator_tube_H); % [m] Additional equivalent tube length for losses due to manifold, splits, and webs %% Chiller chiller_N_tubes = 100; % Number of refrigerant tubes chiller_tube_L = 0.4; % [m] Length of each refrigerant tube chiller_tube_D = 0.0035; % [m] Diameter of each refrigerant tube chiller_wall_thickness = 1e-4; % [m] Material thickness chiller_wall_conductivity = 240; % [W/m/K] Material thermal conductivity chiller_N_baffles = 3; % Number of coolant baffles chiller_area_primary = chiller_N_tubes * pi * chiller_tube_D * chiller_tube_L; % [m^2] Primary heat transfer surface area chiller_area_baffles = chiller_N_baffles * 0.7 * 2 * chiller_N_tubes*((2*chiller_tube_D)^2 - pi*chiller_tube_D^2/4); % [m^2] Total surface area of coolant baffles chiller_tube_Leq = 2*0.2*chiller_tube_D*chiller_N_tubes; % [m] Additonal equivalent tube length for losses due to manifold and splits. %% Battery Pack battery_Np = 2; % Number of parallel cells in a string battery_Ns = 20; % Number of series connected strings battery_N_cells = battery_Np*battery_Ns; % Number of cells per module % battery_cell_mass = 0.125; % [kg] Cell mass battery_cell_cp = 795; % [J/kg/K] Cell specific heat battery_SOC_LUT = [0 0.1 0.25 0.5 0.75 0.9 1]'; % State of charge table breakpoints S battery_temperature_LUT = [278 293 313]; % Temperature table breakpoints T battery_capacity_Ahr = 27.8; % Battery cell capacity [Ahr] battery_Em_LUT = [ 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 battery_R0_LUT = [ 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 battery_R1_LUT = [ 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 battery_C1_LUT = [ 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 battery_Tau1_LUT = battery_R1_LUT.*battery_C1_LUT; battery_cell_H = 0.2; % Battery cell height [m] battery_cell_T = 0.012; % Battery cell thickness [m] battery_cell_W = 0.12; % Battery cell width [m] battery_extR = 0; % Battery Module ascessory resistance (Ohm) battery_moduleCellR0_ini = ones(1,battery_N_cells); % Cell-to-cell capacity variation (-) battery_moduleCellSOC_ini = battery_SOC_init*ones(1,battery_N_cells); % Cell-to-cell initial SOC variation (-) battery_moduleCellT_ini = (battery_T_init+273)*ones(1,battery_N_cells);% Cell-to-cell initial temperature variation (K) battery_moduleExtHeat = zeros(1,battery_N_cells); % Cell-to-cell external heat flux variation (W) % Cell-to-cell variation in Resistance R0 battery_moduleCellAhr_ini01 = ones(1,battery_N_cells); % Cell-to-cell resistance variation (-) for 1st Module battery_moduleCellAhr_ini02 = ones(1,battery_N_cells); % Cell-to-cell resistance variation (-) for 2nd Module battery_moduleCellAhr_ini03 = ones(1,battery_N_cells); % Cell-to-cell resistance variation (-) for 3rd Module battery_moduleCellAhr_ini04 = ones(1,battery_N_cells); % Cell-to-cell resistance variation (-) for 4th Module sampleDistribution160=load('num160Data.txt'); battery_moduleCellAhr_ini01(1:battery_N_cells)=sort(sampleDistribution160(1:battery_N_cells)'); battery_moduleCellAhr_ini02(1:battery_N_cells)=sort(sampleDistribution160(battery_N_cells+1:2*battery_N_cells)'); battery_moduleCellAhr_ini03(1:battery_N_cells)=sort(sampleDistribution160(2*battery_N_cells+1:3*battery_N_cells)'); battery_moduleCellAhr_ini04(1:battery_N_cells)=sort(sampleDistribution160(3*battery_N_cells+1:4*battery_N_cells)'); % battery_moduleSideHTC = 1; % Heat transfer coefficient on module sides battery_thermal_K1 = 0.8; % Battery cell (through-plane) thermal conductivity [W/mK] battery_thermal_K2 = 800; % Battery cell (in-plane) thermal conductivity [W/mK] % %% Parameter changes as per selected secnario subsys = [bdroot '/Scenario']; if user_selection == 1 % Switch signal builder group %signalbuilder([subsys '/Vehicle Speed [km//hr]'], 'ActiveGroup', 1) % Drive cycle set_param([subsys '/Vehicle Speed'], 'ActiveScenario', 'Drive_Cycle') % Drive cycle % Update constant block values set_param([subsys '/Pressure [MPa]'], 'Value', '0.101325') % [MPa] Environment pressure set_param([subsys '/Temperature [degC]'], 'Value', '30') % [degC] Environment temperature set_param([subsys '/Relative Humidity'], 'Value', '0.4') % Environment relative humidity set_param([subsys '/CO2 Fraction'], 'Value', '4e-4') % Environment CO2 mole fraction set_param([subsys '/Temperature Setpoint [degC]'], 'Value', '21') % [degC] Cabin AC setpoint set_param([subsys '/AC On//Off'], 'Value', '1') % Cabin AC on or off set_param([subsys '/Recirculation On//Off'], 'Value', '0') % Cabin AC recirculation on or off set_param([subsys '/Number of Occupants'], 'Value', '1') % Number of occupants in cabin % Workspace variables cabin_p_init = 0.101325; cabin_T_init = 30; cabin_RH_init = 0.4; cabin_CO2_init = 4e-4; coolant_p_init = 0.101325; coolant_T_init = 30; refrigerant_p_init = 0.8; refrigerant_alpha_init = 0.6; battery_T_init = 30; battery_SOC_init = 0.95; % elseif user_selection == 2 % Switch signal builder group % signalbuilder([subsys '/Vehicle Speed [km//hr]'], 'ActiveGroup', 2) % Zero speed set_param([subsys '/Vehicle Speed'], 'ActiveScenario', 'Zero_Speed') % Zero speed % Update constant block values set_param([subsys '/Pressure [MPa]'], 'Value', '0.101325') % [MPa] Environment pressure set_param([subsys '/Temperature [degC]'], 'Value', '40') % [degC] Environment temperature set_param([subsys '/Relative Humidity'], 'Value', '0.5') % Environment relative humidity set_param([subsys '/CO2 Fraction'], 'Value', '4e-4') % Environment CO2 mole fraction set_param([subsys '/Temperature Setpoint [degC]'], 'Value', '21') % [degC] Cabin AC setpoint set_param([subsys '/AC On//Off'], 'Value', '1') % Cabin AC on or off set_param([subsys '/Recirculation On//Off'], 'Value', '1') % Cabin AC recirculation on or off set_param([subsys '/Number of Occupants'], 'Value', '1') % Number of occupants in cabin % Workspace variables cabin_p_init = 0.101325; cabin_T_init = 40; cabin_RH_init = 0.5; cabin_CO2_init = 4e-4; coolant_p_init = 0.101325; coolant_T_init = 40; refrigerant_p_init = 1; refrigerant_alpha_init = 0.76; battery_T_init = 40; battery_SOC_init = 0.95; % elseif user_selection == 3 % Switch signal builder group %signalbuilder([subsys '/Vehicle Speed [km//hr]'], 'ActiveGroup', 1) % Drive cycle set_param([subsys '/Vehicle Speed'], 'ActiveScenario', 'Drive_Cycle') % Drive cycle % Update constant block values set_param([subsys '/Pressure [MPa]'], 'Value', '0.101325') % [MPa] Environment pressure set_param([subsys '/Temperature [degC]'], 'Value', '-10') % [degC] Environment temperature set_param([subsys '/Relative Humidity'], 'Value', '0.5') % Environment relative humidity set_param([subsys '/CO2 Fraction'], 'Value', '4e-4') % Environment CO2 mole fraction %set_param([subsys '/Temperature Setpoint [degC]'], 'Value', '21') % [degC] Cabin AC setpoint set_param([subsys '/AC On//Off'], 'Value', '0') % Cabin AC on or off set_param([subsys '/Recirculation On//Off'], 'Value', '1') % Cabin AC recirculation on or off set_param([subsys '/Number of Occupants'], 'Value', '1') % Number of occupants in cabin cabin_p_init = 0.101325; cabin_T_init = -10; cabin_RH_init = 0.5; cabin_CO2_init = 4e-4; coolant_p_init = 0.101325; coolant_T_init = -10; refrigerant_p_init = 0.2; refrigerant_alpha_init = 0.15; battery_T_init = -10; battery_SOC_init = 0.95; % else % Error end battery_moduleCellSOC_ini = battery_SOC_init*ones(1,battery_N_cells); battery_moduleCellT_ini = (battery_T_init+273)*ones(1,battery_N_cells); % Update Scenario subsystem tag for annotation set_param(subsys, 'Tag', scenario)