请教一下，4.3.8的电池异常过充测试，保护板应该短路哪里？由于是要电池饱和状态做这个测试，那么它的充电电流不可能比 正常充电电流大吧？


[ 此贴被贺小梅在2011-11-15 17:59重新编辑 ]

短路电路中影响充电电流大小的元器件 一般是使充电电流高于 或者远大于正常充电电流

看具体电路，吧那个限压的电路给failed掉

Quote:

引用第1楼茶馆于2011-11-15 17:43发表的  :
短路电路中影响充电电流大小的元器件 一般是使充电电流高于 或者远大于正常充电电流

但是，这个测试是电池充满电的情况下做的，就算短路了保护板，它的充电电流会高于正常充电电流？

我已附上保护板电路图，请问，应该短路哪里呢？

我晕，QQ空间的图不能用，百度空间的图不能用，如何才能上传图片？

电池饱和状态下，放电短路U2两脚，短路P-到电池负极，使电池过放。看会不会漏液，爆炸，起火等。

充满电的话，那么电流就会很小到没有。充不进去电了

Quote:

引用第6楼davidfu于2011-11-15 18:02发表的  :
电池饱和状态下，放电短路U2两脚，短路P-到电池负极，使电池过放。看会不会漏液，爆炸，起火等。

谢谢这位仁兄的解答，你说的是放电？那么过充也一样短路那里吗？在电池饱满的状态下，短路保护板充电，还有电流的，相当于直接对电芯充电。

锂电池标准中本来就有电芯的过充电、短路等试验。不过，手机电池国家标准中对电芯的要求工厂都达不到，有试验基本上都爆炸了。

你做电池异常过充，应该是空电池吧
Overcharging of a rechargeable battery. The battery is charged under each of the
following conditions in turn.
• The battery charging circuit is adjusted with the battery disconnected to give 106 % of
the rated output voltage of the charger, or the maximum charging voltage available
from the charger (without simulation of faults), whichever is the higher attainable
value. The battery is then charged for 7 h.
• The battery charging circuit is adjusted, with the battery disconnected, to 100 % of the
rated output voltage of the charger. The battery is charged while briefly subjected to
the simulation of any single component failure that is likely to occur in the charging
circuit and that results in overcharging of the battery. To minimize testing time, the
failure is chosen that causes the highest overcharging current. The battery is then
charged for a single period of 7 h with that simulated failure in place.

U1 Pin5-6， U2 输入到电池，R1短路就好了。。。

Quote:

引用第10楼琥珀流云于2011-11-16 09:46发表的  :
你做电池异常过充，应该是空电池吧
Overcharging of a rechargeable battery. The battery is charged under each of the
following conditions in turn.
• The battery charging circuit is adjusted with the battery disconnected to give 106 % of
the rated output voltage of the charger, or the maximum charging voltage available
.......

这个测试对于可充电电池来说，是要在饱和状态下做的。