CarDYNA-Battery动力电池仿真模型
evDYNA-Battery电池模型
a) 电池模型概述
仿真模型可以使用Matlab / Simulink。
仿真模型符合以下要求:
l Matlab / Simulink s-function在x86架构上运行(MS Windows)
l Matlab / Simulink s-function在NI PXI上运行
l Matlab / Simulink s-function在HiL测试台上运行
图所示的电池模型包含一个等效电路模型和一个热模型。
b)模块输入
Name
Unit
Description
TEnv
[°C]
环境温度
Tinlet
[°C]
冷却液入口温度
Tinit
[°C]
平均电池温度在开始时间
SOCinit
[%]
电池初始充电状态(SOC)
IBat
[A]
所有电流(交流发电机负载)
KA
[W/K]
热损失系数(cond + conv + rad)
dV/dt
[l/min]
体积流量
c)模型输出
Name
Unit
Description
TBat
[°C]
平均电池工作温度
Toutlet
[°C]
冷却液出口温度
UBat
[V]
电池温度在终端
PLoss
[W]
电力损失
SOC
[%]
SOC
d) 模型参数
Name
Unit
Type
Comment
Battery open circuit voltage(OCV)
[V]
Lookup Table (2-D)
OCV of battery model subject to the battery temperature
and SOC
Battery internal discharge resistant
[Ω]
Lookup Table (2-D)
Discharge resistant of battery model subject to the
battery temperature and SOC
Battery internal charge resistant
[Ω]
Lookup Table (2-D)
Charge resistant of battery model subject to the battery
temperature and SOC
Capacity of battery
[AH]
Scalar
-
Capacity Cofficient of battery
[%]
Lookup Table (1-D)
Capacity Cofficient of battery subject battery
temperature
Battery concentration resistance discharge
[Ω]
Lookup Table (2-D)
Battery concentration resistance discharge subject to the
battery temperature and SOC
Battery concentration resistance charge
[Ω]
Lookup Table (2-D)
Battery concentration resistance charge subject to the
battery temperature and SOC
Battery concentration capacitance discharge
[F]
Lookup Table (2-D)
Battery concentration capacitance discharge subject to
the battery temperature and SOC
Battery concentration capacitance charge
[F]
Lookup Table (2-D)
Battery concentration capacitance charge subject to the battery
temperature and SOC
Battery transfer resistance discharge
[Ω]
Lookup Table (2-D)
Battery transfer resistance discharge subject to the
battery temperature and SOC
Battery transfer resistance charge
[Ω]
Lookup Table (2-D)
Battery transfer resistance charge subject to the battery
temperature and SOC
Battery transfer capacitance discharge
[F]
Lookup Table (2-D)
Battery transfer capacitance discharge subject to the
battery temperature and SOC
Battery transfer capacitance charge
[F]
Lookup Table (2-D)
Battery transfer capacitance charge subject to the
battery temperature and SOC
Battery selfdischarge current
[A]
Lookup Table (1-D)
Battery selfdischarge current subject to the battery
temperature
Battery heating capacity
[J/K]
Scalar
Estimated heat capacity of the battery
K
[J/Km]
Scalar
Estimated thermal conductivity
of the battery
A
[m2]
Scalar
surface area
exposed to Coolant
h
[J/Km2]
Scalar
Battery heat convection cofficient
--
Scalar
Emission ration of battery
e) 等效电路
等效电路模型图如图所示。 它包含一个开路电压源来模拟电池的OCV,放电电阻和充电电阻,以模拟欧姆极化(RC)电路,以模拟由浓
度梯度损失引起的影响的浓差极化参数,RC电路来模拟由传输损耗引起的电化学极化效应,以及用于模拟电池自放电的电流源。
f) 热力学模型
可以提供两种热电池模型。 第一种是基于电化学规律和传热规律的电化学模型。 这种模型与实际的电池单元具有相同的充放电特性,但它有许多复杂的非线性方程。 电化学模型可用于在电池设计期间优化电池的冷却结构。
另一种模型是一个简单的单节点集中参数热模型,它把单元当作热源,只分析单元和冷却剂之间的传热。 它可以预测电池正常工作时的平均内部电池温度和冷却液温度随时间的变化。
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