Page 67 - Battery Reference Book

1/52 Introduction to battery technology

Electrical
Y resistancex/ 0.028
1 / 40.026
W
P / 40.024
e 0.022 5
P
.- 0.020 ;
-u 0.
cn
.- 0.018
J 0.016 .:
U 0.014 E
B 0.010 'S
-
0.012
- Total I 0.006 tu
SO
0.008 3
CI
W
r
I I JO'---
I
I I
I I I I I I I I
I I
I
4 8 12 16 20 24 28
0
Discharge time (min)
Discharge current (A)
0 4 8 12 16 20 24 2% -lo 602 480 300 150 90 60
Discharge time (min) Figure 1.46 Discharge of a 2 V lead-acid battery: heat production
per unit time and cell electrical resistance as a function of
602 480 300 150 90 60 discharge time
Discharge current (A)
loo 90 1
Figure 1.44 Discharge of a 2 V lead-acid battery: heat production
per unit time and energy density as a function of discharge time
al
70-
.c
Y) .-
Discharge TJ 60- - 1.6
-
net total Y
m
m Joule +AH 0 -
& 80- 50- 1.5
.- -
>
L
$ 40- -1.4 g
P -
m
c
- - 1.3 z
5 30-
W .-
C
Y 0
9 20- - 1.2 fL
F
w
10 - - 1.1
L I I I I I I J Jl.0
0 100 200 300 400 500 600 700
Discharge current (A)
Figure 1.47 Discharge of a 2V lead-acid battery: heat evolved
during whole discharge and end-point voltage as a function of
discharge current
Discharge time (min)
Figure 1.45 Discharge of a 2V lead-acid battery: heat evolved
during whole discharge and cell electrical resistance as a function
of discharge time