Charging system for vehicle and vehicle comprising the same

1. A power source for vehicles, comprising:

a secondary battery pack to support power required to start up a vehicle and power required for an electronic device equipped in the vehicle together, and having an operating voltage range of 9V to 19V in which a maximum operating voltage ranges from 16V to 19V and an average voltage is higher than or equal to 12V; and

an alternator to produce a charging power for the secondary battery pack in response to operation of an engine of the vehicle.

2. The power source for vehicles according to claim 1 , wherein the average voltage of the battery pack has a higher value than a nominal voltage of the electronic device equipped in the vehicle.

3. The power source for vehicles according to claim 1 , wherein the alternator applies a charging voltage between both ends of the secondary battery pack, and a higher voltage than the voltage of the secondary battery pack is applied.

4. The power source for vehicles according to claim 1 , wherein the alternator produces a charging current in a range of 0 A to 300 A and provides it to the secondary battery pack.

5. The power source for vehicles according to claim 1 , wherein an output voltage of the secondary battery pack at a certain state of charge (SOC) is higher than an output voltage of a 12V lead storage battery pack at the same SOC.

6. The power source for vehicles according to claim 5 , wherein an output voltage difference between the secondary battery pack and the 12V lead storage battery pack at the same SOC is less than and equal to 4.4V.

7. The power source for vehicles according to claim 1 , wherein the average voltage of the secondary battery pack is higher than or equal to 13V.

8. The power source for vehicles according to claim 1 , wherein the power source for vehicles comprises an idle stop and go (ISG) cancellation unit to cancel an ISG mode of the vehicle when the voltage of the secondary battery pack drops down to a reference voltage value.

9. A vehicle comprising:

a secondary battery pack to support power required to start up a vehicle and power required for an electronic device equipped in the vehicle together, and having an operating voltage range of 9V to 19V in which a maximum operating voltage ranges from 16V to 19V and an average voltage is higher than or equal to 12V; and

an alternator to produce a charging power for the secondary battery pack in response to operation of an engine of the vehicle.

10. The vehicle according to claim 9 , wherein the average voltage of the battery pack has a higher value than a nominal voltage of the electronic device equipped in the vehicle.

11. The vehicle according to claim 9 , wherein the alternator applies a charging voltage between both ends of the secondary battery pack, and a higher voltage than the voltage of the secondary battery pack is applied.

12. The vehicle according to claim 9 , wherein the alternator produces a charging current in a range of 0 A to 300 A and provides it to the secondary battery pack.

13. The vehicle according to claim 9 , wherein an output voltage of the secondary battery pack at a certain state of charge (SOC) is higher than an output voltage of a 12V lead storage battery pack at the same SOC.

14. The vehicle according to claim 13 , wherein an output voltage difference between the secondary battery pack and the 12V lead storage battery pack at the same SOC is less than and equal to 4.4V.

15. The vehicle according to claim 9 , wherein the average voltage of the secondary battery pack is higher than or equal to 13V.

16. The vehicle according to claim 9 , wherein the vehicle comprises an idle stop and go (ISG) cancellation unit to cancel an ISG mode of the vehicle when the voltage of the secondary battery pack drops down to a reference voltage value.