Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Co., Ltd.

Shuting Sun

Haijiang Wang

Mingshu Du

Wei Zhao

Yongchao Li

Jihai Xie

Shichang Zhang

Bo Zeng

Xu Liang

Shuai Gao

Wei Ye

A discharging control method and a charging control method for a battery pack control system are provides. The battery pack control system includes a master battery management unit and multiple slave battery management units. The master battery management unit controls the slave battery management units. The slave battery management units controls battery packs to connect to an operating circuit or disconnect from the operating circuit. In the discharging control method and the charging control method, a loop current generated from connecting a battery pack to an operating circuit is predicted each time before a slave battery management unit controls the battery pack to connect to the operating circuit, and the battery pack is controlled to connect to the operating circuit with the generated loop current within a safe value range.

Discharge control method and charge control method of battery pack control system

A method for determining a charging time includes obtaining a maximum monomer voltage of a cell of a battery, and under a condition that the maximum monomer voltage is determined to be greater than or equal to a value, determining, based on a charging voltage of the battery, the charging time of the battery.

Method for determining charging time, BMS, battery, and electrical energy device

A method for determining a remaining charging time of a battery. The method includes obtaining a first charging current and a second charging current. The first charging current is a present charging current of the battery, and the second charging current is a charging current of the battery when the battery is fully charged. The method further includes determining an average charging current value based on the first charging current and the second charging current, and determining the remaining charging time based on the average charging current value.

Method and system for determining remaining charging time of battery

A method for determining a full-charge capacity of a battery pack includes: obtaining first state of charge values of cells at a first state of charge correction moment; calculating a net cumulative charge capacity from the first state of charge correction moment to a full-charge moment; obtaining a voltage-capacity curve of a fully charged cell from start of a charge termination phase to the full-charge moment; obtaining a second voltage of a not fully charged cell at the full-charge moment; obtaining a capacity difference between the not fully charged cell at the full-charge moment and the not fully charged cell at the first full-charge voltage; calculating a state of charge difference; calculating a second state of charge value of the not fully charged cell at the full-charge moment; obtaining state of charge variations; calculating full-charge capacities; and obtaining a full-charge capacity based on the calculated full-charge capacities.

Method for determining full-charge capacity of battery pack, method for determining state of health of battery pack, system, and apparatus

This application provides a method and a device for estimating a remaining charging time of a battery, and a battery management system. The method includes: determining a minimum charging time of each type of battery cell at a Kcharging phase based on a charge request current value of each type of battery cell at the Kcharging phase; and determining the remaining charging time of the battery when the Kcharging phase of any type of battery cell in the battery is a target state-of-charge phase, where the remaining charging time of the battery is a smallest one of accumulation values, each accumulation value being an accumulation of minimum charging times of a type of battery cell in the battery at all charging phases.

Growing community of inventors

Ningde, China

Shuting Sun