20 ENGLISH
Example of diagnosis
(a)
(a)
(a)
(c)
(c)
(c)
(b)
(b)
(b)
(d)
(d)
(d)
[The point of diagnosis]
a) The mark of failure and the mark of cell failure are displayed.
b) Each block voltage is unbalanced; especially the voltage of block 1 is decreased.
c) The battery is used at a relatively large current.
d) Battery temperature became high frequently.
[Diagnosis]
It can be assumed that the cell was damaged by repeated continuous heavy-load work, which led to failure.