RC EVOLUTION - 遙控工房 - 香港RC遙控車討論區

標題: 電池放電的定義[請教] [打印本頁]

作者: antfai 時間: 2006-8-28 20:31
標題: 電池放電的定義[請教]
我見有充電器有放電功能.
其實,電池放電的定義是不是將電池剩餘的電力快快用完呢!?

作者: SPOONACCORD 時間: 2006-8-28 20:32
放走曬佢呀嗎～～

作者: antfai 時間: 2006-8-28 20:37
假設我自製左個”4摩打”(4個摩打連在一起)..我充電時..將電池用”4摩打”用曬D電.
效果一樣嗎?

作者: hpipro4 時間: 2006-8-28 20:41

原帖由 antfai 於 2006-8-28 20:37 發表
假設我自製左個”4摩打”(4個摩打連在一起)..我充電時..將電池用”4摩打”用曬D電.
效果一樣嗎?

放電的原意是把每粒電都在一個指定v數不是放曬

作者: SPOONACCORD 時間: 2006-8-28 20:43

原帖由 antfai 於 2006-8-28 20:37 發表
假設我自製左個”4摩打”(4個摩打連在一起)..我充電時..將電池用”4摩打”用曬D電.
效果一樣嗎?

應該冇咁好～～～

作者: antfai 時間: 2006-8-28 20:46
咁即係話.放電 & 用電係唔同意思!?

作者: 老人家 時間: 2006-8-28 20:55
放電用意是減少電池 (通病) 記憶 , 以下詳言自己理解
http://bbs.rc-evo.com/viewthread.php?tid=129&extra=page%3D1
http://bbs.rc-evo.com/viewthread.php?tid=126&extra=page%3D1
http://bbs.rc-evo.com/viewthread.php?tid=10283&extra=page%3D1
http://bbs.rc-evo.com/viewthread.php?tid=10219&extra=page%3D1

作者: kityancy123 時間: 2006-8-28 20:55
100%既電用剩20%.....咁你放電係唔係放佐果20%佢........再重差佐果100%電

咁下一次差完電今埋玩到100%電囉?岩唔岩?

作者: 老人家 時間: 2006-8-28 21:03

原帖由 kityancy123 於 2006-8-28 20:55 發表
100%既電用剩20%.....咁你放電係唔係放佐果20%佢........再重差佐果100%電

咁下一次差完電今埋玩到100%電囉?岩唔岩?

不大正確 , 100%既電用剩20% , 如你唔放電 , 電池就像馬路的洞會給車不停行過而越來越大 , 電池的記憶會越來充不入及用不盡 , 最後崩潰 (死電)

作者: Motorman 時間: 2006-8-29 02:26

原帖由 antfai 於 2006-8-28 20:31 發表
我見有充電器有放電功能.
其實,電池放電的定義是不是將電池剩餘的電力快快用完呢!?

from www.zbattery.com

"Battery Memory Effect - What it is and what you can do about it"

Almost anyone who uses rechargeable batteries has heard of the memory effect problem.
For those who have not heard of this problem it is commonly believed that when rechargeable batteries are not fully discharged between charge cycles that they remember the shortened cycle and are thus reduced in capacity (length of use per charge).

Little known facts:

'Memory Effect' is the common term used to replace the more accurate term 'Voltage Depression.'

Voltage Depression is more a problem with incorrect charging than a battery problem.

Voltage Depression does not necessarily permanently damage a battery. It can most likely be corrected by fully charging and discharging the battery.

Voltage Depression ('Memory Effect') is often incorrectly used to explain low battery capacity that should be attributed to other problems, such as inadequate charging, overcharge, or exposure to high temperatures.

Voltage Depression can be affected by the discharge rate of a battery. Generally speaking, the depth of discharge will be less on discharges at the higher rates. This increases the capacity loss as less of the active material in the battery is cycled.

Voltage Depression occurs primarily in NiCad batteries. NiMH batteries are almost never affected and Li-Ion batteries are NEVER affected.
So how can you maximize the use of your rechargeable batteries? Here are a few steps to take to get the most use out of your batteries:

1. Invest in a good charger. NiMH batteries should not be charged in a NiCad charger, unless the charger is specifically made for both chemistries. There are cheap chargers and there are expensive chargers. Make sure the charger you get has good reviews and is well made. Chargers with micro-controller chips are usually the best choice.

2. When charging your batteries occasionally discharge them fully before recharging them. This is especially helpful to NiCad batteries. Be careful not to discharge too deeply. (Less than 1v per cell for NiCad and NiMH. E.g., a 3.6v pack to no less than 3v.) Discharging to absolute zero will make your battery useless. It's best if you have a charger with a conditioner that will cycle the battery for you.

3. Be sure to store your batteries properly. Do not leave your batteries in a hot car, or in humid conditions. The best storage conditions are a cool, dry place. The refrigerator is fine if you stick in a packet of silica gel with your batteries in a sealed bag to keep them dry. It is a good idea to charge your NiCad or NiMH batteries fully before use if they have been in storage.

4. Most cordless phones use NiCad batteries. To maximize your cordless phone battery life, make sure to leave your phone off the base every once in a while until it is dead. Then leave it on the base until it is fully charged. You should leave your phone on the base for at least 24 hours to charge it fully.
There is no need to avoid rechargeable batteries. They can save you significant amounts of money over time. Don't be scared off by the 'memory effect'. It is easily manageable if it ever occurs.

作者: GigaRacer 時間: 2006-8-29 06:50
How about using a 12v automobile light bulb to discharge? Will it do the job? Will it discharge too low?

作者: Motorman 時間: 2006-8-29 11:16

原帖由 GigaRacer 於 2006-8-29 06:50 發表
How about using a 12v automobile light bulb to discharge? Will it do the job? Will it discharge too low?

Light bulb discharging could have the job done........ but you have to check the voltage frequently by a multimeter (parallel connection).

For 1.2V rechargable battery, the best cut off voltage is 0.9V

作者: GigaRacer 時間: 2006-8-29 13:50

原帖由 Motorman 於 2006-8-28 19:16 發表

Light bulb discharging could have the job done........ but you have to check the voltage frequently by a multimeter (parallel connection).

For 1.2V rechargable battery, the best cut off volt ...

how to check?

I discharge the whole pack 7.2v, not single cell. any other cheaper way to discharge safely?

作者: 老人家 時間: 2006-8-29 18:44
那就之可大約 , 7.2v=6cell , 1cell=0.9 , 6cell=0.9X6=5.4

歡迎光臨 RC EVOLUTION - 遙控工房 - 香港RC遙控車討論區 (https://jk.rc-evo.com/xbbs/)