In the last semester of my graduation I worked on a project Design and Development of Liquid Immersion Cooling System for Battery Packs of High-Performance Light Electric Vehicles.
For design and simulation I used CATIA and SIMULIA respectively on the 3DEXPERIENCE Platform.
Here I'm sharing the quick report of my project.
CFD Simulation:
The main motto behind the simulation was to select the arrangement for cells and placement of inlet and outlet to achieve uniform and maximum cooling. The staggered arrangement and the linear cells arrangement was simulated, wherein the staggered arrangement was more effective but for ease of manufacturability the linear cell arrangement has been selected.
Then all the simulations was performed on the liner arrangement to analyze the effect of inlet fluid velocity on the cooling. The heat patches and their location was analyzed. The procedure that we followed is as described below:
1. Importing CAD File:
I imported the previously designed CAD files directly into the part design window through import>Catia file. Also, you can design a product in the part design itself.
2. Editing CAD file in Fluid Model Creation:
Opening imported CAD into the Fluid model creation and making required changes in the geometry (If required only).
3. Opening Fluid Scenario creation:
3d Compass > Fluid Scenario creation
Importing this design in the Fluid scenario creation app.
4. Setup:
Apply Finite Element Model to all geometries of the part. Setup> Finite Element Model >initialization supports All Geometries and initialization methods automatically.
a. Material Creation:
The lithium ion battery cell material was created and given appropriate properties.
Also the DFK-MIVOLT (fluid) was created with the help of properties given in the datasheet.
b. Specifying physics behavior:
Allocation of solid, fluid domains to the geometries.
Enabling the temperature effects and gravity effect.
5. Steady step creation:
As our requirement was to analyze and compare different cell arrangements so as to achieve maximum and uniform cooling, the steady state step simulation was chosen to check the heat transfer pattern, temperature pattern and fluid flow with less computational power required.
6. Scenario Creation:
Initial Conditions:
Specifying the initial conditions such as initial temperature, fluid velocity and pressure.
Boundary conditions:
The velocity inlet was given to the inlet opening and outlet was specified as pressure outlet. The mass flow inlet with pressure outlet is also good combination for simulation of viscous flow.
Specifying heat load:
The cells were provided with volumetric heat generation load conditions.
Automatic solid interface was generated.
7.Simulate:
After successfully completing all the previous steps we will now simulate our model.
Select simulate and your simulation results will get loaded.
8. Exploring Results:
After simulation the results will be loaded on screen automatically.
We can change the Scale factor from the contours plot.
We can explore various results like Temperature, Pressure, and Fluid velocity. Also, we can see the min and max value of the various factors across the geometry
For the ease of viewing the results of various parameters at a particular point, we can take the section view.
We compared different arrangements of cells and the results helped us to choose the most effective arrangement. We manufactured and assembled the battery pack and performed experiments on it and the results shows the close resemblance with the simulation results.
Edu 3DEXPERIENCE Battery Management Simulation Knowledge Sharing
