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你做电池异常过充,应该是空电池吧4 @( u O/ U1 _' v
Overcharging of a rechargeable battery. The battery is charged under each of the
* R9 b. |' t2 U, h3 q" Ffollowing conditions in turn.
; @% q! p, Q7 M _" Y/ a• The battery charging circuit is adjusted with the battery disconnected to give 106 % of6 Z' |. \8 N; K9 r& F& O0 D6 Z
the rated output voltage of the charger, or the maximum charging voltage available4 F) r+ w# [1 y& \5 M1 o8 g4 Z
from the charger (without simulation of faults), whichever is the higher attainable9 y3 v# v5 _- s p% Y& H
value. The battery is then charged for 7 h.
. _9 B) E# u- `; t/ g$ l• The battery charging circuit is adjusted, with the battery disconnected, to 100 % of the1 U3 T" F/ W0 T' k+ T
rated output voltage of the charger. The battery is charged while briefly subjected to2 m4 ?9 f) Q, X
the simulation of any single component failure that is likely to occur in the charging
1 U p/ `/ J& U* ncircuit and that results in overcharging of the battery. To minimize testing time, the
" O. `6 j) J5 K# _failure is chosen that causes the highest overcharging current. The battery is then6 |0 B9 N k- U2 z) ^' ?* a5 E
charged for a single period of 7 h with that simulated failure in place. |
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