Introduction:
In my quest to better understand the charging characteristics of my Solterra, I recently came across an intriguing phenomenon I'm calling 'cool gating.' This would be a more subtle limitation to charging than the 'cold gating'. Through careful analysis of charging sessions from my road trip, I hypothesized that if the minimum battery temperature falls below a certain threshold, the early phases of charging may be limited.
Unveiling 'Cool Gating':
During my charging sessions, I noticed that certain sessions exhibited a limited charging speed during the early phases. This led me to investigate further and theorize that 'cool gating' might be at play. 'Cool gating' refers to a limitation in charging speed when the minimum battery temperature falls below a specific threshold.
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| Example of normal charging |
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| Example of cool gating |
Refining the Threshold:
By reviewing the charging sessions from my road trip, I visually identified which sessions appeared to be 'cool gated.' While I have not yet pinpointed the exact threshold, my initial analysis suggests that it lies somewhere between 22.65°C and 27.24°C. To refine this estimate, I recognize the need to collect additional charging data to gain a more precise understanding of when this limitation occurs.
Collecting Additional Data:
To further refine my understanding of 'cool gating' and establish a robust threshold, I will continue collecting charging data from various conditions and temperatures. This data will enable me to precisely determine the threshold at which 'cool gating' occurs and devise the most effective preconditioning strategy.
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