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你做电池异常过充,应该是空电池吧( J! c3 G% u+ M
Overcharging of a rechargeable battery. The battery is charged under each of the
; G5 m4 U8 L2 Q/ Q8 _following conditions in turn.' w2 ?( @$ N4 n- p
• The battery charging circuit is adjusted with the battery disconnected to give 106 % of. R& E; s4 b+ e) o
the rated output voltage of the charger, or the maximum charging voltage available
2 c' j" n, B; ^7 w" q5 jfrom the charger (without simulation of faults), whichever is the higher attainable
6 M$ C7 S& V9 K/ m! y$ W, Evalue. The battery is then charged for 7 h.- M" H+ X2 P. q- H8 O: u7 N
• The battery charging circuit is adjusted, with the battery disconnected, to 100 % of the8 M7 o- A: L" E, v) e$ f4 R
rated output voltage of the charger. The battery is charged while briefly subjected to1 t2 c! l: g' S
the simulation of any single component failure that is likely to occur in the charging/ M$ f$ N x$ Q; L/ h
circuit and that results in overcharging of the battery. To minimize testing time, the
' [, E- v$ h& L( Jfailure is chosen that causes the highest overcharging current. The battery is then
) x7 G! u2 V$ I3 Q0 G0 D! Acharged for a single period of 7 h with that simulated failure in place. |
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