For Automobile
The Structure of xEV Batteries
The Structure of Cell
Negative Electrode
Graphite Electrode
Positive Electrode
Lithium Metal-Oxide Electrode
Separator
A film that consists of polyethylene or polypropylene in order to electrically separate positive electrode from negative electrode and contain electrolyte.
Insulator Plate or Gasket
A plate for electrically separating both electrodes from can
Safety Vent
A part for discharging the inside gas in order to guarantee the safety of batteries
The structure of Pack
Battery ECU
Battery Electronic Control Unit (so-called Battery Management System, BMS)
xEV ECU
Electronic Control Unit that controls the whole xEV automobile
Cooling System
The system that controls the inside temperature of packs by using air-cooling type or water-cooling type
The Principle of xEV Battery
Negative Electrode
Graphite Electrode
Positive Electrode
Lithium Metal-Oxide Electrode
Charge
The process to accumulate energy into a battery
Discharge
The process to drive xEV automobile in order to use accumulated energy
Current Collector
A metal mediator that transfer electrons. Aluminum positive electrode and cooper negative electrode
Electric automobile is expected to develop into xEV → PHEV → EV
| HEV | Plug-in HEV (PHEV) | EV | |
|---|---|---|---|
| Power Source | Charged by engine running without? charging from the outside. | HEV? that is also possible to charge from the ouside Short Distance Driving using only electricity Long Distance Driving in HEV? mode |
Driven by only batteries charged from the outside electric power source. |
| Structure |  |
 |
 |
| The Number of Batteries | 80~100 | 300~500 | 700~1,000 |
| The Kinds of Batteries | Large Output | Medium Output? Medium Capacity | Large Capacity |
| Motor Mileage | ~15 km | 15~60 km | 80~300km |
| Characteristic |  |
||
