Patent ID: 11946893
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for determining water content in a battery, comprising:
obtaining a capacitance detection value of the battery; and
determining a first water content value of the battery according to the capacitance detection value and a capacitance-water content relationship model;
wherein the capacitance-water content relationship model is constructed according to corresponding relationships between sample batteries with different water content values and their respective sample capacitance values; and
wherein obtaining the capacitance detection value of the battery comprises:
after determining that the battery reaches a detection position, connecting a detection probe to positive and negative electrodes of the battery;
applying an alternating current with a constant voltage to the battery through the detection probe, and measuring a capacitive reactance value of the battery; and
obtaining the capacitance detection value of the battery according to the capacitive reactance value of the battery.