A linear parameter-varying model for HEV/EV battery thermal modeling

Abstract

Battery thermal management for high power applications such as electrical/hybrid vehicles is crucial. Modeling is an indispensable tool to help engineers design better battery cooling systems. A fast and accurate battery thermal model capable of predicting volume-averaged cell temperature or temperature at user specified locations under transient heat dissipation and varying mass flow rate is proposed. In such an approach, several state space models are generated first from computational fluid dynamics (CFD) results for different mass flow rates. Then a linear parameter-varying (LPV) model is created out of the state space models to account for non-constant flow rates. The model is then shown to provide excellent results compared with those from CFD under transient heat dissipation and mass flow rate. Such a LPV model runs many orders of magnitude faster than the original CFD model.

Experimental and theoretical investigation of temperature distributions in a prismatic lithium-ion battery

“…For the battery thermal modeling numerous papers are available, using different approaches like finite element model (FEM) [20] or lumped parameter model (LPM) [21], linear parameter varying (LPV) model [22], or partial differential equation (PDE) model [23]. In most of the above mentioned models, a thermal model is coupled with an electrochemical model which simulates the battery temperature profile with various operating conditions, cooling rate or geometries.…”

Single Electrode Entropy Change for LiCoO2Electrodes

“…Thermal modeling is thus intensely discussed in the literature, in the context of e.g. cell design, material use, and type of application (1)(2)(3)(4)(5)(6)(7)(8).…”

Thermal modeling and experimental validation of a large prismatic Li-ion battery

“…R e,x2 has been determined using formula (4) and R e,x3 using formula (5). h is a transfer coefficient, which often needs to be experimentally determined to reach a sufficient precision [15].…”

“…Several papers deal with thermal modeling of battery, using different approaches such as Partial Differential Equation (PDE) model [4], Linear Parameter-Varying (LPV) model [5], finite element model [6] or lumped parameter model [7]. In most of them, a thermal model is coupled with an electrochemical model so as to simulate the temperature profile of a battery under different operating conditions, geometries or cooling rate.…”