Patent ID: 11909009
Assignee: LG ENERGY SOLUTION, LTD.
Field: Measurement (Instruments)
Classification: CPC H  G  Y | IPC G  H

Claim 5:
6. A battery safety test method performed by a battery safety test device, the battery safety test device including:
an electronic switching element;
a mechanical switch element having a first end connected to either a battery positive electrode or a battery negative electrode and a second end connected to the electronic switching element,
wherein the electronic switching element has a first end connected to the mechanical switch element and a second end connected to the other of the battery positive electrode or the battery negative electrode;
a voltage sensor;
a current sensor; and
a variable resistor connected directed to either the battery positive electrode or the battery negative electrode and connected directly between the battery and the electronic switching element, the method comprising:
applying power to the mechanical switch element to turn on the mechanical switch element;
turning on the electronic switch element after the mechanical switch element is turned on;
measuring a voltage of the battery, by the voltage sensor, and measuring a current across the battery, by the current sensor, after the mechanical switch element and the electronic switch element are turned on;
calculating a voltage and current waveform of the battery using the measured voltage and current at both the battery positive electrode and the battery negative electrode; and
determining a safety of the battery using the calculated voltage and current waveforms of the battery.