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你做电池异常过充,应该是空电池吧! ?9 P0 ~; r/ ]8 j3 T
Overcharging of a rechargeable battery. The battery is charged under each of the# H/ E* }7 I) r( G9 U, ~
following conditions in turn.# H) P; i3 r, Y" R4 g5 P
• The battery charging circuit is adjusted with the battery disconnected to give 106 % of
$ s) z5 k+ |) v" xthe rated output voltage of the charger, or the maximum charging voltage available
9 C2 O+ {& L6 h& |; c; q" ~+ ffrom the charger (without simulation of faults), whichever is the higher attainable$ T% C3 U3 ^& ]
value. The battery is then charged for 7 h.
: J* K k% v) t0 r* ]' G H1 H• The battery charging circuit is adjusted, with the battery disconnected, to 100 % of the9 z, a+ O/ Y+ _9 r0 I$ n
rated output voltage of the charger. The battery is charged while briefly subjected to( w$ b+ Z) C& P) R: T3 H
the simulation of any single component failure that is likely to occur in the charging/ L/ f X7 `0 i# d: W! o
circuit and that results in overcharging of the battery. To minimize testing time, the
4 s" N8 b8 D+ Afailure is chosen that causes the highest overcharging current. The battery is then
4 g. p) \6 {0 q* E: }charged for a single period of 7 h with that simulated failure in place. |
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