2results about How to "Voltage balance" patented technology

The application provides a charging control module, a method, a smart terminal and a charging system. The charging control module comprises a charging unit, at least two batteries, at least two switch tubes and a control unit. The charging unit is connected with the positive poles of the at least two batteries, the negative poles of the batteries are respectively connected with the first ends of the switch tubes, the second ends of the at least two switch tubes are connected with each other and grounded, and the control unit is connected with the control ends of the switch tubes. During the charging process of the charging unit for the batteries and / or during the discharging process of the batteries, the control unit controls the voltage difference between the two batteries through the switch tubes. The above technical scheme can control the voltage difference between the at least two batteries, ensure the voltage balance during the charging and discharging, and improve the charging efficiency.

This invention provides a method, apparatus, system, and aircraft for controlling parallel charging of multiple battery packs, relating to the field of battery management technology. In the hardware access stage, based on the initial voltage sorting results, the invention dynamically calculates and sets a pre-charge current threshold by real-time monitoring of the voltage difference and the real-time internal resistance of the battery packs. This precisely limits the circulating current instantaneously generated by the contactor in the closed charging circuit to a safe range, achieving the function of the voltage equalization module in suppressing inrush current and voltage balancing without additional hardware. In the software management stage, the total SOC value is calculated based on at least one of the health status and rated capacity of each battery pack. This ensures the feedback accuracy of the total SOC value even without a voltage equalization module, and dynamically distributes the current according to the health status of each battery pack, achieving the balancing effect of the voltage equalization module at the logical level. Therefore, this invention achieves safe and efficient parallel charging of multiple battery packs without using a voltage equalization module.