Battery charging method, electronic apparatus, storage medium, and program product
AssigneeHuawei Technologies Co., Ltd.
InventorsRuichao Tang, Xingdi Huang
Life of this patent
Estimating the term…
Abstract
A method includes: obtaining a current charging current and voltages of n electrochemical cells; if a difference between a highest voltage in the voltages of the n electrochemical cells and a preset upper limit of a single electrochemical cell charging voltage is less than or equal to a preset difference, determining a derating current, where the preset difference is greater than or equal to 0, the highest voltage is less than or equal to the upper limit of the single electrochemical cell charging voltage, and the derating current is less than the current charging current; and indicating to charge the battery with the derating current.
Claims17
A method, applied to a battery formed by n electrochemical cells, wherein n is an integer greater than 1, and the method comprises:
- obtaining a current charging current and voltages of the n electrochemical cells;
- determining a derating current when a difference between a highest voltage in the voltages of the n electrochemical cells and a preset upper limit of a single electrochemical cell charging voltage is less than or equal to a preset difference, wherein the preset difference is greater than or equal to 0, the highest voltage is less than or equal to the preset upper limit of the single electrochemical cell charging voltage, and the derating current is less than the current charging current;
- after determining the derating current, calculating a compensation voltage based on the derating current and impedance of a charge loop of the battery;
- adding a limited charging voltage of the battery and the compensation voltage, to obtain a maximum allowable charging voltage of the battery;
- setting a cut-off charging voltage to be the maximum allowable charging voltage of the battery;
- and
- indicating to charge the battery with the derating current.
An electronic apparatus, comprising:
- a processor, wherein the processor is coupled to a memory, and when the processor executes a computer program or instructions stored in the memory, the following operations are implemented:
- obtaining a current charging current and voltages of n electrochemical cells of a battery;
- determining a derating current when a difference between a highest voltage in the voltages of the n electrochemical cells and a preset upper limit of a single electrochemical cell charging voltage is less than or equal to a preset difference, wherein the preset difference is greater than or equal to 0, the highest voltage is less than or equal to the preset upper limit of the single electrochemical cell charging voltage, and the derating current is less than the current charging current;
- after determining the derating current, calculating a compensation voltage based on the derating current and impedance of a charge loop of the battery;
- adding a limited charging voltage of the battery and the compensation voltage, to obtain a maximum allowable charging voltage of the battery;
- setting a cut-off charging voltage to be the maximum allowable charging voltage of the battery;
- and
- indicating to charge the battery with the derating current.
A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following operations are implemented:
- obtaining a current charging current and voltages of n electrochemical cells of a battery;
- determining a derating current when a difference between a highest voltage in the voltages of the n electrochemical cells and a preset upper limit of a single electrochemical cell charging voltage is less than or equal to a preset difference, wherein the preset difference is greater than or equal to 0, the highest voltage is less than or equal to the preset upper limit of the single electrochemical cell charging voltage, and the derating current is less than the current charging current;
- after determining the derating current, calculating a compensation voltage based on the derating current and impedance of a charge loop of the battery;
- adding a limited charging voltage of the battery and the compensation voltage, to obtain a maximum allowable charging voltage of the battery;
- setting a cut-off charging voltage to be the maximum allowable charging voltage;
- and
- indicating to charge the battery with the derating current.
Dependencies are inferred from the claim text.