Method and system for determining health parameter of a battery

A battery health determining system for determining State of Health (SOH) of a battery, the battery health determining system comprising:

• a processor;
• and
• a memory communicatively coupled to the processor,
• wherein the memory stores processor-executable instructions that, when executed by the processor, causes the processor to:
• detect a charging state of the battery that is being charged by a Constant Current (CC) or a Constant Voltage (CV);
• add a low frequency current signal to the CC that is charging the battery to obtain a low frequency charging current, or add a low frequency voltage signal to the CV charging the battery to obtain a low frequency charging voltage;
• determine one or more parameters relating to the battery during the charging state of the battery;
• calculate an internal impedance and Open Circuit Voltage (OCV) values based on the one or more parameters;
• and
• determine SOH of the battery based on the calculated internal impedance and the OCV values.

A non-transitory computer-readable recording medium having recorded thereon instructions executable by a processor to perform a method for determining State of Health (SOH) of a battery, the method comprising:

• detecting a charging state of the battery that is being charged by a Constant Current (CC) or a Constant Voltage (CV);
• adding a low frequency current signal to the CC that is charging the battery to obtain a low frequency charging current, or adding a low frequency voltage signal to the CV, that is charging the battery to obtain a low frequency charging voltage;
• determining one or more parameters relating to the battery during the charging state of the battery;
• calculating an internal impedance and Open Circuit Voltage (OCV) values based on the one or more parameters;
• and
• determining SOH of the battery based on the calculated internal impedance and the OCV values.