张小哥

Lithium titanate battery balancing plate

Overview

The overall maximum voltage is 13.25V and
the maximum single string voltage is 2.65V.
The charging voltage is 13.3V.

Active balancing: Since ETA3000 is designed for ordinary 3.7V lithium batteries, it can also be used for lithium titanate batteries. The active balancing current of 1.5A can be modified by referring to the data manual parameters. Question: According to actual measurements, when a single-cell lithium titanate battery is lower than 1.9V, it will stop balancing (in some cases, it will not balance at 2.1V). Circuit reference @xianzundaren's lithium battery active balancing board 20s-ETA3000 - Jialichuang EDA open source hardware platform (oshwhub.com)

Passive equalization protection: BW6101 passive protection prevents the over-balanced form of energy dissipation when the voltage of a single string battery is greater than 2.65V. When the voltage is greater than 2.75V, the indicator light will light up. Circuit Reference@Negentropy Light Boss’s Supercapacitor Balanced Protection Board - Jialichuang EDA Open Source Hardware Platform (oshwhub.com)

Use with stand

The circuit is currently in the verification stage (can be used). If anyone finds any problems, please leave a message to discuss.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-07-02 13:19:30

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