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Battery ChargeBy Prof. Hsia
type
type
Memory Effect
Lithium Iron Phosphate
3.2V3.3V170mAh/g3~5C20001
: increase current : Increase voltage19V Notebook battery , how to connect?19/3.7v=5.1,6x3.7=22.2VBuck19V22V2000mAh, x2=4000mAh (2,)
48V 15Ah ?https://www.youtube.com/watch?v=mM-jr4r3a0s
EV :PHEV :HEV:
1.2C-rate 2957 s13.2 Ah / 2957 s = 16.070A1.0 C-rate :
Driver: S=0PMOS PMOS DriverVgs increases, Id increases=
NMOS DriverVddPWMControlun=2.5 upNMOS driver is about double to PMOSSDGVgs=Vds, Id is max. =
BuckPower4.2~4.8VFor Li-battery
CVCCControl
Need Charge Chip
VddBuckControl
Charge IC design
Current Sensor
Wireless Charge
WPC Methods
W~KWW~KW>100mWKW10m>100m70%50%1.6%25%
Standardhttps://www.youtube.com/watch?v=DB_qNqziJPg
3C- USB
473%
>
>
RLC
QBWQfo
, Q
*
40KHz51.5V
Two Output
Chip
WPC for Cell-phone Qi 15W 30 60%
Nissan 100 161 S Model S 265 426 Enel Endesa 15 80% 50K
WPCWireless Power Consortium Qi Ikea Ikea