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你做电池异常过充,应该是空电池吧
7 g; l7 U( w3 \; F4 ]* Z# x: r/ FOvercharging of a rechargeable battery. The battery is charged under each of the
S/ W8 R! n- ^/ @, V6 c* w7 G6 Kfollowing conditions in turn.
! T; o/ \2 P( |• The battery charging circuit is adjusted with the battery disconnected to give 106 % of
% F U* _% |; \' H3 tthe rated output voltage of the charger, or the maximum charging voltage available9 P3 D4 j9 }9 V* [6 D
from the charger (without simulation of faults), whichever is the higher attainable- f+ T8 Y% O! C) w- X; X" { R
value. The battery is then charged for 7 h.
0 s7 l: |% Y% C' ^3 \+ i) E3 C• The battery charging circuit is adjusted, with the battery disconnected, to 100 % of the
& \ n: r' N( j. ^3 t; Jrated output voltage of the charger. The battery is charged while briefly subjected to. Z: D. p5 v& [2 T. K/ V
the simulation of any single component failure that is likely to occur in the charging
% w. p+ K A4 p' X$ v; h4 h9 o+ Icircuit and that results in overcharging of the battery. To minimize testing time, the
1 N/ o l% K0 Ifailure is chosen that causes the highest overcharging current. The battery is then
5 |& N8 I5 r6 I" X) r+ Q% wcharged for a single period of 7 h with that simulated failure in place. |
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