Li-Ion Battery Simulation Using MSMD Model in Ansys-Part-4-Solver Setup-Solution

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[@brilliantobibi5783]

Thank you for your sharing sir

[@mbt_s]

Hi, you are welcome.

[@joshihrushikeshashutosh7034]

Thank you for this tutorial, it helped a lot. For a project, I am planning to use LS Dyna for battery simulations, using their battery and EM solvers. Can you please bring a series on that? it would be really helpful as not a lot of info is present on multiphysics coupling in youtube or the internet. Thanks.

[@istankitv]

Thanks a lot for sharing these knowledge! I have one question. Can I find, how much heat is generated inside the battery?

[@NAVALGURJAR-h8n]

Hi sir, I'm having a problem that in conductive zone my screen is not showing p zone n zone and cell zone What should I do???

[@Ankit-wk7rx]

Can you do the same for cylindrical lithium ion cell?

[@eashwarsj1624]

hi sir, thank you so much for the explanation. i have a doubt in the battery specifications part, for the system power should we give the total power of the EV?

[@mbt_s]

Hi, this is for a single cell battery. So, the total power of the EV should be divided by number of battery packs, and then by the number of battery cells in each pack.

[@DawoodIbrahim-wv3kd]

Thanks for sharing the knowledge you have with us and teaching us. I'm here with a problem that I'm facing in active and passive zone under conductive zone interface. In your case cell zone, p_zone, n_zone appeared but when i do the same this only word "Solid" appears

[@elifnazlselim6807]

So much grateful for your tutorial series, it helped a lot. I have a problem with converting many to many mesh interfaces to one to one mesh interface. I use 2024 R1 and after opening the fluent file, I start the setup by reading the relevant mesh file. It is recommended that "At least one many-to-many mesh interface is found in the case file. Such mesh interfaces will not be available in a future release of Fluent. It is recommended to convert to the current default one-to-one mesh interfaces with the following text command: /define/mesh-interfaces/one-to-one-pairing? " I do not have any idea what it means and whether it can cause any problem or not. I couldn't reach any useful information on the internet. And I am curious about that converting issue. How can I do?

[@wajihatasnim7995]

Hi Keivan, I have a query. When you just copied the boundary condition of cell zone to tab n and p, then you opened the tab for checking the boundary condition of wall-p-zone. In that tab (18:28-time of the video), I can see at the bottom in the section of material name was active material, should you or we change the material to tab material from active material? Please let me know. Thanks :)

[@mbt_s]

Hello, no, this does not change the result, because we have selected the materials in the previous step, and in the boundary conditions step, you only need to specify the boundary conditions and not the material for different components.

[@515_ae_phaneendra6]

Thank you so much sir for your efforts on these simulations. Please also do the simulations on Liquid cooling if possible sir.

[@mbt_s]

Dear Phaneendra, thanks. Sure, the battery simulation with water cooling will be uploaded soon. Please share with your friends.

[@OmarSukkar]

@@mbt_s is the video uploaded sir??

[@kimkimkim8627]

I tried to follow the 23:11 which is to see the result of battery contour. However, It just only shows battery cell_zone not p_zone or n_zone. Why does it only show cell_zone? I don't think I missed any part from geometry to mesh. Do you think It is related to electrical conductivity value?

[@aarushgoyal5910]

in our ansys 2023r1 uds diffusivity option is not available please help us

[@starccm621]

dear thank you so much to sheart such kind of information.on the bases of ur simulation i did my own case simulation and i got a correct answer but i have one question.why on equation option you disable the flow option?

[@mbt_s]

Dear, Thank you for your kind feedback. As the battery is treated as a solid region, you can turn off the flow equation for a faster solution. Particularly, in battery pack simulation with a larger mesh size, that could save some quality time!

[@starccm621]

how about if we have inlet and outlet with the flow ? cause in my case i use both solid and liquid for lithium ion cells.when i selcate flow opation its give me error i dont know the logic why?@@mbt_s

[@mbt_s]

@@starccm621Dear, that is right, please watch the "Battery Simulation with Liquid Cooling" at: kzbin.info/www/bejne/fXS2c6eIfa5jpac

[@namnguyenhoai3764]

Hello, I found your video very useful, but I still have a question, I want to ask you about how to build the charge-discharge characteristics of lithium batteries.

[@eashwarsj1624]

why do we need to turn off the convergence criteria? wont it affect the results?

[@emrysdruid143]

In cell zone condition, "Source term" is on. Whats in that?

[@tanuujsrivastava28]

why and how did you choose time step to be 30 s?

[@minyoungyoo4441]

Just a question, since this is a lithium-ion battery, why you did not use lithium properties but modified aluminium and copper? This might be a silly question but I would be happy to know the reason. Thanks in advance.

[@mbt_s]

Hi, the materials are mostly used for tabs and not for the inside chemistry. The model is only valid for Li-ion batteries, so the inside chemistry is defined by default.

[@bib_bib8]

hi, i have a problem. when i go to set up, there is an error “negative zone is not connected to a conductive zone”. what should i do? thank you

[@kimkimkim8627]

Hello I am using 2024 R1 version, and I cannot find the processing option (Parrel or Serial), Do you know where I can find this option?

[@kmmannie38]

How to set ambient temp

[@SALIHKAYA-wt6td]

Which features of the battery model you use were defined to the program?

[@mbt_s]

Hello, the main feature is the MSMD model and its following e-chemistry models that its equations are available in different scientific papers.

[@SALIHKAYA-wt6td]

@@mbt_s can you share the datsheet of the battery that you used in video

[@mbt_s]

@@SALIHKAYA-wt6td Hello dear, this is a sample geometry for a 14.6 ah battery. So, the simulation process is the main concern. You can also find the same thing in Ansys Fluent Tutorial (with less details however). For any battery you should know all detailed information of the battery to fully meet the required result.

[@indradevkumar2115]

Why source term is added

[@JeetendraSingh017]

did mesh in fluent but active and passive zone zero component showing i.e nothing showing both zones

[@mbt_s]

Hi, please make sure that both zones are defined as solid and not fluid.

[@JeetendraSingh017]

@@mbt_s yaa

[@devanshi823]

Why do we change the copper electrical conductivity to 1e7? Is there a reason why we cant keep the default value?

[@mbt_s]

Dear, the values are only for demonstration purposes and you can change them based on your case.

[@sradhapur]

I want to test battery performance at a different External pressure (uniform force). please guide how to do.

[@mbt_s]

Hello, static pressure has a little impact on impedance of lithium-ion pouch battery, dynamic pressure generates during discharging/charging which looks like “cell breathing”. Moreover, this pressure links to current amplitude. In order to simulate your problem, you need to couple Ansys Fluent with Ansys Mechanical and first simulate each system independently and then couple the simulations. For a good start, please watch the following video: kzbin.info/www/bejne/gYrUpmyGZbdpZqM If you need private course on this, please let me know. Thanks for your question.

[@sradhapur]

@@mbt_s Thank you

[@makarapunmakaramani6147]

Thank you for the helpful video. I did follow your step, but in my Fleunt 2022 R2 the UDS material properties are missing. And I can't find the User Defined Scalar in Contour menu. How can I solve this problem?

[@mbt_s]

Dear, This is a comment from a friend that had the same issue. I hope you find it well. "I have loaded the MSMD Battery Model and also enabled sir. The UDS diffusivity property is not appearing in the newer versions, included in the Electrical thermal conductivity itself that's where we need to change the values according to the reference values. Yesterday itself I googled, and I find this."

[@전승혁-x4g]

@@mbt_s I'm in a similar situation to him. There is no space to enter uds diffusivity. I'm using aluminum and copper, but if I just input electrical conductivity, will the result be output normally?

[@AkashSingh-tv2bj]

@@전승혁-x4g what value did you use?

[@tusharthakare4283]

Can tell how to do modelling and simulation of sodium -ion battery using anysys

[@mbt_s]

Sure, you can find it in the product playlist.

[@muhammadzulkarnain9270]

can i get the result by chancing the tab position from side by side to up and down side of the cell?

[@mbt_s]

Yes, that is possible. It is actually the way you should consider for cylindrical battery cells.

[@AkashKumar-zr4ru]

hello sir. can you help me to design battery separator and study the flow rate and temperature. i have no idea how to study the separator . please guide me

[@mbt_s]

Hello, sure, in a couple of weeks, a new playlist as an advanced section will be added to the channel regarding the simulation of a separator. So, please stay tuned and share with your friends.

[@AkashKumar-zr4ru]

hey its been two weeks since you told and i couldnt find any. could you please guide me. guide me how to design detailed version of separator and simulation

[@mbt_s]

@@AkashKumar-zr4ru Hello, please have a look at "Stress analysis of the separator in a lithium-ion battery" by Danghe Shi.

[@shvetareddy3639]

I am getting error user defined stop condition reached and calculation completed

[@mbt_s]

Please check the MSMD panel input data including min stop voltage.

[@raheemadam9434]

@@mbt_s I have the same issue, my min voltage is 2.5v still i have the same issue. does this error have to do with model parameter y and x coefficient?

[@mohamadsadeghsadeghian4874]

@@raheemadam9434 hey check your current. you also can plot soc when you're running.

[@amitnemade011]

How can I plot the SOC? Please elaborate. ​@@mohamadsadeghsadeghian4874

[@rohitkumarpinninti2307]

hey! i got a problem in this. while creating the materials the UDS-diffusivity part is not showing for me. what can i do for that?

[@Dcassimatis]

try updating your mesh in workbench

[@ShubhamKumar-z7o3c]

in conductive zone , active & tab componenents are not showing ....please help

[@mbt_s]

Dear, please change the material type from fluid to solid in "Cell Zone Conditions"

[@s_sstryker5982]

how can i validate the paper?

[@mbt_s]

Each battery model has a unique discharge behavior and requires specific input data. For validated simulations, please have a look at battery products available in the channel.

[@sanjaydheeran3740]

While doinf contour graphics, tabs are not visible for me

[@mbt_s]

Dear, please change the material type from fluid to solid in "Cell Zone Conditions"

[@Vishalyadav-ox9fk]

After selecting model UDS option is removed what to do next

[@AkashKumarSinghme23m013]

did you figure it out?

[@SALIHKAYA-wt6td]

Hello, can you help me abput battery virtual connection? thanks

[@515_ae_phaneendra6]

In Aluminum material property i didn't get the option UDS Diffusivity sir

[@mbt_s]

uds0 and uds1 are two scalar values which are used in the battery model equations. We used those values to solve for positive and negative potentials, respectively. For equations and models containing these two scalars please read the paper "A CFD thermal analysis and validation of a Li-ion pouch cell under different temperatures conditions" by Antonio et al.

[@515_ae_phaneendra6]

@@mbt_s Thank you sir

[@515_ae_phaneendra6]

@@mbt_s While opening the material property the UDS diffusivity option didn't include with other properties.

[@mbt_s]

@@515_ae_phaneendra6 Dear friend, please make sure that you have loaded the MSMD Battery Model before going to the material section. You should do it via "define models addon-module" script. Sometimes you load the MSMD Battery model but it is disabled again in the models section. So, make sure you go back and enable the model again in the Models section before going through material definition.

[@515_ae_phaneendra6]

@@mbt_s I have loaded the MSMD Battery Model and also enabled sir. The UDS diffusivity property is not appearing in the newer versions, included in the Electrical thermal conductivity itself that's where we need to change the values according to the reference values. Yesterday itself I googled, and I find this.

[@mahmutguvenc5864]

hello msmd battery mode is not activated in versions above 20r1. how can i solve this?

[@mbt_s]

Hello, what type of error do you get?

[@mahmutguvenc5864]

@@mbt_s Hello. I am not getting any error. I am using the 2020 version. Even though I type define models addon-models and press 8, in the models section it only appears as battery mod, not msmd mod. I guess it's because of the version?

[@mahmutguvenc5864]

@@mbt_s How can I solve the version differences problem? for example there are differences in material modeling.