Then make a charge circuit that can charge the other battery. Spec it so that the input of one is the same as the output of the other. Combine the two and you can transfer charge from one to the other. You could probably make a buck-boost converter with an efficiency around 97 percent.
In general, the charging ends once the battery gets fully charged. Here, the “Control Termination” decides the end of the charging based on accumulated SoC. It also recognizes the repetitive rapid decays of current in SV-steps as chargeability rejections and couples with SoC to determine the end of charging.
@RussellMcMahon Yes, all their energy from one battery to another within reason due to losses. That’s the main goal among measuring other parameters such as voltage, charge current, temperature etc of the battery.
Firstly, it charges the battery at a constant current, ICC, until it reaches a predefined cut-off voltage, VCV, linearly incrementing the SoC. Secondly, it switches to a constant voltage, VCV, during which the current decays exponentially as the battery gains charged.
Hyundai is about to take the next steps as it preps to launch production of its “game-changi ng” all-solid-state batteries. The new EV battery tech promises a longer driving range, faster charging, and significantly higher energy density. Here’s what to expect. When are Hyundai’s all-solid-state EV batteries coming?
Sidenote: 3.7V stated on the batteries in the schematic is because this is the nominal voltage of lithium-ion batteries. They will charge up to 4.2V and discharge as much as you allow it.
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