Computing device and method for testing charging and discharging reliability of rechargable battery

A computing device, comprising:

• at least one processor;
• a storage system;
• and
• one or more modules that are stored in the storage system and executed by the at least one processor, the one or more modules comprising:
• a first measurement module operable to control a power supply to charge a rechargeable battery under a first protection current, control a test device to measure terminal voltages and rechargeable currents of a rechargeable battery when the rechargeable battery is charged by the power supply, and obtain a first plurality of terminal voltages and a first plurality of rechargeable currents of the rechargeable battery, wherein the first protection current protects the power supply from damage during charging of the rechargeable battery;
• a second measurement module operable to control the power supply to discharge the rechargeable battery under a second protection current, control the test device to measure terminal voltages and electronic currents of the rechargeable battery when the rechargeable battery is discharged, and obtain a second plurality of terminal voltages and a second plurality of electronic currents of the rechargeable battery, wherein the second protection current protects the power supply from damage during discharging of the rechargeable battery;
• a curve creation module operable to create a first lifecycle curve based on the first terminal voltages and the first rechargeable currents, and create a second lifecycle curve based on the second terminal voltages and the second electronic currents;
• a lifecycle estimation module operable to compare the first lifecycle curve with a predetermined charge lifecycle curve, and compare the second lifecycle curve with a predetermined discharge lifecycle curve;
• and
• a report module operable to generate a lifecycle estimation report of the rechargeable battery according to the comparison results, and display the lifecycle estimation report on a display screen of the computing device.

A non-transitory storage medium having stored thereon instructions that, when executed by a processor of a computing device, causes the processor to perform a method for testing charging and discharging reliability of a rechargeable battery, the method comprising:

• (a) controlling a power supply to charge a rechargeable battery under a first protection current, wherein the first protection current protects the power supply from damage during charging of the rechargeable battery;
• (b) controlling a test device to measure terminal voltages and rechargeable currents of the rechargeable battery when the rechargeable battery is charged, and obtaining a first plurality of terminal voltages and a first plurality of rechargeable currents of the rechargeable battery;
• (c) controlling the power supply to discharge the rechargeable battery under a second protection current, wherein the second protection current protects the power supply from damage during discharging of the rechargeable battery;
• (d) controlling the test device to measure terminal voltages and electronic currents of the rechargeable battery when the rechargeable battery is discharged, and obtaining a second plurality of terminal voltages and a second plurality of electronic currents of the rechargeable battery;
• (e) creating a first lifecycle curve based on the first terminal voltages and the first rechargeable currents, and creating a second lifecycle curve based on the second terminal voltages and the second electronic currents;
• (f) comparing the first lifecycle curve with a predetermined charge lifecycle curve, and comparing the second lifecycle curve with a predetermined discharge lifecycle curve;
• and
• (g) generating a lifecycle estimation report of the rechargeable battery according to the comparison results, and displaying the lifecycle estimation report on a display screen.