[转帖]Ni-MH battery

组别:中级工程师

2007-08-31 10:11 | 只看楼主

树型| 收藏| 小中大 41

1. Charging
Charging Temperature
>Charge batteries within an ambient temperature range of 0 to 40 celsius.
>Ambient temperature during charging affects charging efficiency. As charging efficiency is best within a temperature range of 10 to 30 celsius, whenever possible place the charger (battery pack) in a location within this temperature range.
>At temperatures below celsius the gas absorption reaction is not adequate, causing gas of pressure inside the battery to rise, which can activate the safety vent and lead to leakage alkaline gas and deterioration in battery performance.
>Charging efficiency drops at temperatures above 45 celsius. This can disrupt full charging and lead to deterioration in performance and battery leakage.

08 31 2007 10:10AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:11 | 只看楼主

树型| 收藏| 小中大 42

Parallel charging of batteries(Don`t try to parallel charge!)
Sufficient care must be taken during the design of the charger when charging batteries connected in parallel. Consult we when parallel charging is required.
Reverse charging(Never reverse charge!!!)
Charging with polarity reversed can cause a reversal in battery polarity causing gas pressure inside the battery to rise, which can activate the safety vent, lead to alkaline electrolyte leakage, rapid deterioration in battery performance, battery swelling or battery rupture.

08 31 2007 10:11AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:12 | 只看楼主

树型| 收藏| 小中大 43

Overcharging(Avoid overcharging!)
Repeated overcharging can lead to deterioration in battery performance.g("Overcharging" means charging a battery when it is already fully charged.)
Rapid charging
To charge batteries rapidly, use the specified charger (or charging method recommended by us and follow the correct procedures).
Trickle charging (continuous charging)
Carry out trickle charge by applying the current of 1/30 to 1/20 CmA. The correct current value is determined depending on the features and purpose of the equipment.
Note : "CmA" During charging and discharging, CmA is a value indicating current and expressed as a multiple of nominal capacity. Substitute "C" with the battery＇s nominal capacity when calculating. For example, for a l500mAh battery of 0.033CmA, this value is equal to 1/30×1500, or roughly 50mA.

08 31 2007 10:11AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:13 | 只看楼主

树型| 收藏| 小中大 44

2. Discharging
Discharge Temperature
>Discharge batteries within an ambient temperature range of -10 to +50 ceslius.
>Discharge current level (i. e. the current at which a battery is discharged) affectsdischarging efficiency. Discharging efficiency is good within a current range of 0.1 CmA to 2 CmA.
>Discharge capacity drops at temperatures below -10 or above +45 celsius. Such decreases in discharge capacity can lead to deterioration in battery performance.

08 31 2007 10:12AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:13 | 只看楼主

树型| 收藏| 小中大 45

Overdischarge (Deep Discharge)
Since overdischarging (deep discharge) damages the battery characteristics, do not forget to turn off the switch when discharging, and do not leave the battery connected to the equipment for a prolonged periods.Besides, avoid shipping the battery installed in the equipment.
High-rate discharging
As high-rate discharging can generate a lot of heat and decreased discharging efficiency, please consult us before attempting continuous discharging or pulse discharging at currents larger than 2 CmA.

08 31 2007 10:13AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:14 | 只看楼主

树型| 收藏| 小中大 46

3. Storage
Short-term Storage temperature and humidity
>Store batteries in a dry location with low humidity, no corrosive gases, and at a temperature range of -20 to +45 celsius.
>Storing batteries in a location where humidity is extremely high or where temperatures fall below -20 or rise above +45 celsius can lead to the rusting of metallic parts and battery leakage due to expansion or contraction in parts composed of organic materials.

08 31 2007 10:13AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:14 | 只看楼主

树型| 收藏| 小中大 47

Long-term storage (1 year, -20 to +35 celsius)
>Because long-term storage can accelerate battery self-discharge and lead to the +30 celsius are deactivation of reactants, locations where the temperature ranges between +10 celsius and suitable for long-term storage.
>When charging for the first time after long-term storage, deactivation of reactants may lead to increased battery voltage and decreased battery capacity. Restore such batteries tooriginal performance by repeating several cycles of charging and discharging.
>When storing batteries for more than 1 year, charge at least once a year to prevent leakage and deterioration in performance due to self-discharging. When using a rapid charge if voltage detection type, carry out charge and discharge at least once every 6 months.

08 31 2007 10:14AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:15 | 只看楼主

树型| 收藏| 小中大 48

4. Service Life of Batteries
Cycle life
Batteries used under proper conditions of charging and discharging can be used 500 the cycles or more. Significantly reduced service time in spite of proper charging means that life of the battery has been exceeded. Also, at the end of service life, an unusal increase in internal resistance, or an internal short-circuit failure may occur. Chargers and charging circuits should therefore be designed to ensure safety in the event of heat generated upon battery failure at the end of service life.

08 31 2007 10:14AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:15 | 只看楼主

树型| 收藏| 小中大 49

Service life with long-term use
Because batteries are chemical products involving internal chemical reactions, performance deteriorates not only with use but also during prolonged storage. Normally, a battery will last 3 to 5 years (or 500 cycles) if used under proper conditions and not overcharged or overdischarged. However, failure to satisfy conditions concerning charging, discharging, temperature and other factors during actual use can lead to shortened life (or cycle life) damage to products and deterioration in performance due to leakage and shortened service life.

08 31 2007 10:15AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

组别:中级工程师

2007-08-31 10:16 | 只看楼主

树型| 收藏| 小中大 50

5. Design of Products Which Use Batteries
Connecting batteries and products
>Never solder a lead wire and other connecting materials directly to the battery, as doing so will damage the battery＇s internal safety vent, separator, and other parts made of organic materials.
>To connect a battery to a product, spot-weld a tab made of nickel or nickel-plated steel to the battery＇s terminal strip, then solder a lead wire to the tab. Perform soldering in as short a time as possible.
>Use caution in applying pressure to the terminals in cases where the battery pack can be separated from the equipment.

08 31 2007 10:15AM

古今之成大事業、大學問者，必經過三種之境界： [color=ff0000] "昨夜西風凋碧樹。獨上高

电池论坛电池技术交流镍镉电池/镍氢电池 [转帖]Ni-MH battery