Some queries on liionpack

[ihlas123]

1. Charging Termination Condition: Are there any ways to terminate the experimental condition? It seems that specifying the experimental protocol as "Charge at 5 A for 47 minutes" is necessary for the successful completion of the experiment (Please refer to the attached document). When I set the charging condition to greater than 47 minutes, the solver issues an error indicating that the high-voltage limit has been reached. If not understood, kindly refer #290 in issue section.

Charge termination condition.zip

2. Discharge Capacity: Concerning the doubt regarding discharge capacity, I have attached the document illustrating the issue. The solver generates an error stating "<class 'pybamm.expression_tree.unary_operators.ExplicitTimeIntegral'> does not implement _unary_evaluate". How can I obtain the discharge capacity vs time curve?

Issue on discharge capacity.pdf

3. Effect of i0: Another doubt I have is regarding the effect of i0. I configured a circuit with Np = 1, Ns = 1, V = 4.2, and I = 0, utilizing "Chen2020" as the parameter set. Is there any tangible effect of I (denoted as i0 in the circuit diagram)? When I set i0 = 0 or i0 = 5, the experiment runs successfully. However, when I set i0 greater than 5, the solver fails to execute completely, displaying "Low-voltage limit reached". My concern is that even if I specify i0, it does not seem to affect the battery. For instance, setting i0 = 10 A with a 1p1s configuration using Chen2020 results in successful discharge at 5 A for 1 hour, while exceeding 5 A for 1 hour leads to "Low-voltage limit reached". It appears that i0 merely represents the total current passing through the circuit without impacting its behavior.

EFFECT OF I0.zip

[TomTranter]

@ihlas123 I have now pushed an update to the voltage limits. You should be able to calculate Discharge capacity by coulomb counting the output as I think this will not work. I0 has no effect on the solve and is replaced by the solver with the experiment currents

[ihlas123]

Hii, Thank you for your response. I'm curious to know in which version of Liionpack you implemented the termination condition. I attempted to use the termination condition in the latest version of Liionpack (0.3.9), but unfortunately encountered the same issue. Looking forward to your reply. Best regards, Ihlas Ahamed.

…

Message ID: <pybamm-team/liionpack/repo-discussions/295/comments/9267397@ github.com>

[TomTranter]

For now you can get it by installing from source on the develop branch. I will push another official release quite soon

[ihlas123]

Hello, Regarding our previous conversation, I'm having trouble finding the method to import the* "test_on_push" *condition. Additionally, since I'm new to GitHub, I would greatly appreciate it if you could provide detailed instructions on the installation process. Thank you for your assistance. Best regards, Ihlas Ahamed.

…

On Sat, May 4, 2024 at 10:26 PM Tom Tranter ***@***.***> wrote: For now you can get it by installing from source on the develop branch. I will push another official release quite soon — Reply to this email directly, view it on GitHub <#295 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BICMXDE5IWYB4GH37BKJQODZAUHMDAVCNFSM6AAAAABG6DEWMSVHI2DSMVQWIX3LMV43SRDJONRXK43TNFXW4Q3PNVWWK3TUHM4TGMJVGAYTE> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[TomTranter]

I pushed a new release to pip. test_on_push sounds like a github action. For developer install you need to clone the repo. Make an environment using venv or conda then cd to the directory you cloned locally and do
pip install -e .