Environmental Engineering Reference
In-Depth Information
estimate the time its RESS can sustain peak power when at 60% SOC start
and not drop below 25% SOC.
A5:
Mild = 105 s; Strong = 63 s; PHEV = 155 s; BEV = 390 s
Note:
Since
P
/
E
[=] h
1
the direct approach is to just solve:
T
= 0.35(3,600)/(
P
/
E
).
U
oc
2
9
Q6:
R
i
where
R
i
is battery internal
resistance and
U
oc
is the battery open circuit voltage. For each of the vehicle
classes listed in Table 2.8, (a) estimate the battery pack internal resistance,
R
i
, and (b) the short circuit current for each case.
A6:
R
i_
mild
=0.462
W
;
R
i_
strong
=0.895
W
;
R
i
_PHEV
=0.186
W
;
R
i_
BEV
= 0.183
W
And
I
sc_mild
=342A;
I
sc_strong
= 368.7A;
I
sc_PHEV
= 1,774.2A;
I
sc_BEV
= 1,830.6A
From SAE J1798,
P
pk
= (2/9)(
U
oc
2
/
R
i
).
J1798 defines battery peak power,
P
pk
ΒΌ
References
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