# US 2016/0355162 A1 · Method of using battery pack for electric vehicle

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- Number: US 2016/0355162 A1
- Document ID: US20160355162A1
- Status: Published application
- Kind: A1
- Application number: 15/101,802
- Filed: 2014-02-27
- Published: 2016-12-08
- Earliest claimed: 2013-12-03
- Inventors: Byung Hyouk KANG
- Web page: https://patentgrep.com/patent/US20160355162A1

## CPC

- B60L 3/12: Recording operating variables {; Monitoring of operating variables}
- B60L 3/0046: {relating to electric energy storage systems, e.g. batteries or capacitors}
- B60L 53/80: Exchanging energy storage elements, e.g. removable batteries
- B60L 58/20: having different nominal voltages
- B60L 58/22: Balancing the charge of battery modules
- B60L 2240/547: Voltage
- B60L 2240/549: Current
- H02J 3/322: {the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging}
- H02J 7/50: acting upon multiple batteries simultaneously or sequentially
- H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 90/12: Electric charging stations
- Y02T 90/14: Plug-in electric vehicles
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

Disclosed herein is a method of replacement, management, and power transmission using a battery pack replacement system for an electric vehicle with an ESS. The method includes detaching a discharged battery pack from the electric vehicle, delivering the detached discharged battery pack to a charging/discharging line, charging and storing the discharged battery pack, primarily checking a buffer capacity of the battery pack, classifying the battery pack as a buffer battery pack for replacement if, as a result of the check, the buffer capacity of the battery pack is equal to and greater than a first buffer capacity reference, moving the battery pack to an energy storage-dedicated line if, as a result of the check, the buffer capacity of the battery pack is smaller than the first buffer capacity reference, secondarily checking the buffer capacity of the battery pack, and classifying the battery pack as an ESS-dedicated battery pack.

## Claims

### Claim 1

A method of managing battery packs in a system equipped with a replacement system for replacing a battery pack for an electric vehicle and an Energy Storage System (ESS), the method comprising:
a tenth step S10 of detaching a discharged battery pack 100 from the electric vehicle;
an eleventh step S11 of delivering the detached discharged battery pack 100 to a charging/discharging line;
a twelfth step S12 of charging and storing the discharged battery pack 100;
a thirteenth step S13 of primarily checking a buffer capacity of the battery pack 100;
a fourteenth step S14 of classifying the battery pack 100 as a buffer battery pack 100 for replacement if, as a result of the check, the buffer capacity of the battery pack 100 is equal to and greater than a first buffer capacity reference;
a fifteenth step S15 of moving the battery pack 100 to an energy storage-dedicated line if, as a result of the check, the buffer capacity of the battery pack 100 is smaller than the first buffer capacity reference;
a fifteenth-first step S15-1 of secondarily checking the buffer capacity of the battery pack 100; and
a sixteenth step S16 of classifying the battery pack 100 as an ESS-dedicated battery pack 120.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
a sixteenth-first step S16-1 of thirdly checking a buffer capacity of the ESS-dedicated battery pack 120 after the sixteenth step S16; and
a seventeenth step S17 of discarding the battery pack 100 if, as a result of the check, the buffer capacity of the battery pack 100 is smaller than the second buffer capacity reference.

### Claim 3

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.

### Claim 4 (depends on 3)

The method of claim 3, wherein the charged battery pack 100 comprises only a buffer battery pack 110.

### Claim 5

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.

### Claim 6 (depends on 5)

The method of claim 5, wherein:
the method further comprises a (32-1)th step S32-1 of assigning some of the amount of power from the buffer battery packs 120 if the amount of power of the ESS battery packs 110 is insufficient at the thirty-first step S31; and
the system further comprises a control unit for controlling a time taken to mount a fully charged battery on the electric vehicle according to a ratio of the assigned buffer battery packs 120.

### Claim 7 (depends on 5)

The method of claim 5, wherein the determination unit determines a battery pack using barcode, Bluetooth, or a sensor attached to the battery pack.

### Claim 8 (depends on 5)

The method of claim 5, wherein the ESS-dedicated battery pack 120 and the buffer battery pack 110 are connected in series and in parallel to supply power to a system line.