Method of using battery pack for electric vehicle

A method of managing battery packs in a system equipped with a replacement system for replacing a battery pack 100 for an electric vehicle and an Energy Storage System (ESS), the method comprising:

• a twentieth step S20 of raising a replacement tool for detaching a discharged battery pack 100 when the vehicle enters the system;
• a twenty-first step S21 of releasing a locking of the discharged battery pack 100;
• a twenty-second step S22 of opening a safety device;
• a twenty-third step S23 of detaching the discharged battery pack 100 and unloading the discharged battery pack 100;
• a twenty-fourth step S24 of raising a charged battery pack 100 using the replacement tool;
• a twenty-fifth step S25 of mounting the charged battery pack 100 on the safety device;
• a twenty-sixth step S26 of fastening the safety device to the charged battery pack 100;
• and
• a twenty-seventh step S27 of lowering the replacement tool to its original position.

A method of using a battery pack 100 for an electric vehicle in a system equipped with a replacement system for replacing the battery pack for the electric vehicle and an Energy Storage System (ESS), the system comprising:

• a determination unit for determining a type of battery pack 100 of the vehicle;
• a replacement unit for detaching a discharged battery pack 100 from the vehicle or mounting a battery pack on the vehicle;
• a charging/discharging unit for charging/discharging and storing the discharged battery pack 100;
• and
• a transfer unit for conveying the discharged battery pack, detached from the replacement unit, to the charging/discharging unit or conveying the battery pack 100, charged by the charging/discharging unit, to the replacement unit,
• the method comprising:
• a thirty-first step S31 of comparing an amount of power of ESS battery packs 110 with an amount of power to be transmitted when the amount of power to be transmitted that is necessary for an emergent power supply is assigned by a nation power management institution;
• a thirty-second step S32 of assigning some of the ESS battery packs 110 and the buffer battery packs 120 if, as a result of the comparison, the amount of power of the ESS battery packs 110 is insufficient;
• and
• a thirty-third step S33 of converting power of a plurality of the ESS-dedicated battery packs 120 and a plurality of the battery packs for battery 110 that are charged and stored and sending the power according to the assigned amount of power.