23APR2015
Bee Technologies
http://www.bee-tech.info/
How to Design of Power Management of
Hybrid Circuit(Battery and Capacitor)
using PSpice Simple Model
PSpice Version
1Copyright (C) Siam Bee Technologies 2015

1.Circuit Method
2.Battery System only
3.Battery and Capacitor System
4.Conclusion
PSpice Version
SPICE Model using Simple Model by Bee Technologies
Lithium Ion Battery Model
http://www.bee-tech.info/simple-model-for-spice/lithium-ion-battery-model/
Lithium Ion Capacitor Model
http://www.bee-tech.info/simple-model-for-spice/lithium-ion-capacitor-model/
2Copyright (C) Siam Bee Technologies 2015

1.Circuit Method
Battery System only Hybrid(Battery and Capacitor) System
Lithium
Ion
Battery
Current
Load
Lithium
Ion
Battery
Current
Load
Lithium
Ion
Capacitor
Control
Current Load Profile
ILOAD
T1 = 0
T2 = 25s
I1 = 0
I2 = {Max_Load}
I3 = {Min_Load}
I4 = {Min_Load}
I5 = {Max_Load}
I6 = {Min_Load}
T3 = 50s
T4 = 120s
T5 = 150s
T6 = 180s
0 0
Load
PARAMETERS:
Max_Load = 11
Min_Load = 2
Hybrid(Battery and Capacitor) System
If Current load >4[A], Lithium Ion Capacitor work
If Current load =<4[A], Lithium Ion Battery work
3Copyright (C) Siam Bee Technologies 2015

1.Circuit Method
Current Load Profile
Hybrid(Battery and Capacitor) System
If Current load >4[A], Lithium Ion Capacitor work
If Current load =<4[A], Lithium Ion Battery work
Lithium Ion Capacitor work
Lithium Ion Battery work
4Copyright (C) Siam Bee Technologies 2015

2.Battery System only
IN-
OUT+
OUT-
IN+ G1
LIMIT(V(%IN+, %IN-)/10u, 0 , I(Load))
ILOAD
T1 = 0
T2 = 25s
I1 = 0
I2 = {Max_Load}
I3 = {Min_Load}
I4 = {Min_Load}
I5 = {Max_Load}
I6 = {Min_Load}
T3 = 50s
T4 = 120s
T5 = 150s
T6 = 180s
0 0
Load
PARAMETERS:
Max_Load = 11
Min_Load = 2
0
VBAT
0
DIS_BAT
+ -
U1
LI-ION_BATTERY
SOC = 1
NS = 1
TSCALE = 1
C = 2
5Copyright (C) Siam Bee Technologies 2015

2.Battery System only
Current Load
Battery Voltage
Battery SOC(%): 100->83.472
6Copyright (C) Siam Bee Technologies 2015

3.Battery and Capacitor System
PARAMETERS:
Dis_SW = 4A
0
ILOAD
T1 = 0
T2 = 25s
I1 = 0
I2 = {Max_Load}
I3 = {Min_Load}
I4 = {Min_Load}
I5 = {Max_Load}
I6 = {Min_Load}
T3 = 50s
T4 = 120s
T5 = 150s
T6 = 180s
0
DIS_BAT
IN+
IN-
OUT+
OUT-
E1
IF(I(Load)>Dis_SW, 0, 1)
0 0
00
Ctrl_BAT
PARAMETERS:
Max_Load = 11
Min_Load = 2
Load
IN-
OUT+
OUT-
IN+
G1
LIMIT(V(Ctrl_BAT, 0)/10u, 0, I(Load))
+
-
+
-
S1
VON = 0.5
VOFF = 0.3
ROFF = 100e6
RON = 100u
0
0
+ -
U1
LI-ION_BATTERY
SOC = 1
NS = 1
TSCALE = 1
C = 2
0
VCAP
0
DIS_CAP
IN+
IN-
OUT+
OUT-
E2
IF(I(Load)>Dis_SW, 1, 0)
0
Ctrl_CAP
0
IN-
OUT+
OUT-
IN+
G2
LIMIT(V(Ctrl_CAP, 0)/10u, 0, I(Load))
+
-
+
-
S2
VON = 0.5
VOFF = 0.3
ROFF = 100e6
RON = 100u
0
0
VBAT
U2
LI-ION_CAPACITOR
CAP = 500
ESR = 0.8m
RDC = 1.2m
NS = 1
TSCAL = 1
SOC = 100
7Copyright (C) Siam Bee Technologies 2015

Control
Battery Voltage
Battery SOC(%): 100->92.012
3.Battery and Capacitor System
Current Load
Capacitor Voltage
Capacitor SOC(%): 100->21.714
8Copyright (C) Siam Bee Technologies 2015

4. Conclusion
Battery System only Hybrid(Battery and Capacitor) System
Lithium
Ion
Battery
Current
Load
Lithium
Ion
Battery
Current
Load
Lithium
Ion
Capacitor
Control
SOC[%]
Start Stop
Lithium Ion
Battery
100 83.472
SOC[%]
Start Stop
Lithium Ion Battery 100 92.012
Lithium Ion Capacitor 100 21.714
If high Current wave form quickly, Hybrid Circuit is better.
9Copyright (C) Siam Bee Technologies 2015