Battery discharge
1 and discharge termination voltage battery unfavorable discharge below: the reservation, otherwise will result in the termination voltage, and have had repeatedly discharge will lead to discharge capacity to restore, for the best work efficiency and the longest life-span, discharge in 0.05 – between 3C,
2 and discharge capacity:
1) discharge capacity and discharge current relationship: 1 for FM, GFM series batteries, JMF in different discharge rate under the condition of capacity, you can see from the graph, discharge rate, the capacity of the battery can release the smaller.
2) temperature effect: the battery capacity, the influence of the temperature is too low temperature (15 degrees below – 5 degrees f) can reduce effectively capacity, high temperature (more than 50 ° c / 122 degrees f) will cause thermal runaway and damage to cells (figure 2).
Third, FM, GFM series products, JMF charging method
1, float filling (limit voltage, current) use: float to control charging pressure 225 V ~ at 2.30 V/monomer, maximum current not more than 0.25 C10, battery charging flow to float 2mA less than 25 degrees Celsius (AH /) (see chart 3).
2 and recycling, namely stop charging (that) : after charging electric charge voltage 2.4 V/monomer, maximum charge current not more than 0.25 C10 (see figure 4).
3, temperature compensation: chemical reaction with the temperature increasing speed, lower temperature and slow. In the 5-35 degrees Celsius battery within the scope of work, the need for recharging voltage compensation, when the temperature is below 5 degrees or above 35 ° c, in order to prevent the battery overcharge or owe proposal for recharging voltage filling appropriate adjustments, adjust the standards for discharge 3mv – cell ° c / /, recycling for – 4mv/c/cell (temperature to 25 degrees Celsius), please refer to FIG. 5.
4 and charging time: to spare, when batteries, battery charged to the time needed for not less than 24 hours, generally, In terms of circulation, if you know the battery power and put the initial charging electric current, can according to the following formula for calculating the environment of 25 degrees Celsius to recharge time.
A. when discharge current is greater than 0.25 C
Cdis
Tch = I + 3 ~ 5
B. when discharge current than 0.25 C
Cdis
Tch = I + 6 ~ 10
Note: Tch = batteries electricity needed time (hours),
Cdis = battery last discharge power (Ann)
I = maximum initial charge current (amps)
Four, the life of the battery
1, the influence factors of the battery life,
Repeat the shallow depth discharge (especially after charging the deep discharge)
Outside temperature is too high
Charging (especially Juan streaming charge)
Excessive charging electric current
When the battery charging good long-term shelved (especially in the high temperature environment),
2 and circulation service life:
When the battery charging and discharging recycling for a cycle, battery life cycle times) and battery (cycle, the depth of the discharge battery charging method and the surrounding environment is closely related to the (see FIG. 6).
3, float filling longevity:
Battery charging mainly by the float life, discharging voltage, the influence of the temperature of the surrounding life also affect product, figure 7 for FM, GFM series, the figure 8 JMF series model for battery life and environment of the floating filling the relationship between temperature curve.
Five, the capacity
1, self-discharge:
1) if the battery charge after long-term storage capacity, and will gradually decrease, such phenomena as discharge, and this phenomenon is called self-discharge is inevitable. Even if battery unused, also for battery chemistry and electrochemical reactions since internal caused by itself, now will discharge the lead-acid battery burke of discharge points as follows:
Chemical factors: whether Yang (PbO2) or (Pb), all of the activation by decomposition reaction (or gradually and electrolyte), and transformed into a stable lead sulfate, this process is also to discharge.
The electrochemical factors: due to the existence of pure substance is formed within the battery will occur with local circuit or poles caused REDOX reaction to discharge.
Burke battery electrolyte with impurity content is extremely low, so is the very small, self-discharge battery super keep characteristics. Its properities characteristics as shown in figure 9.
2) battery self-discharge rate and storage temperature also has the close relation, please refer to FIG. 10.
2 and open through the battery voltage can judge the residual capacity of the battery, the figure 11 for residual capacity and open the relationship between voltage graph:
The storage battery
Low temperature storage battery should be clean, dry, the environment, heat, avoid direct sunlight. Adequate storage battery power. And next month at 3 ~ 6 months on a battery.
Battery charging and discharging immediately after the battery in the discharge shall be suspended for,
Don’t need to use the battery should be suspended for a period of time after repeated charging, until capacity restored to the original level,
Only when the capacity to or below the rating capacity of 40 % (open-circuit voltage is below 25 degrees Celsius (V/V) 12.63 6.3, to make the capacity balance charging resumed,
Low temperature storage battery can more long time, such as the battery is stored in 15 ° c, the light is wet and, in irradiation essential supplement before, can keep more than 12 months.

We know from the lithium ion battery gel, around it since the advent of research and development work has been constantly, in the late 1990s and develop the lithium battery, 2002 polymer gel is launched phosphoric acid lithium iron power gel battery.

Lithium ion battery consists mainly of positive gel internal anode, electrolyte and diaphragm and composed. Positive and negative and electrolyte materials and different craft differences make gel battery has different properties, and a different name. Currently on the market lithium ion battery anode materials mainly gel lithium cobalt oxide (LiCoO2), plus a few using lithium manganese oxide (LiMn2O4) and lithium nickel oxide anode materials (LiNiO2) of lithium ion batteries, general gel after two anode materials to the lithium ion battery gel is called “lithium manganese gel battery” and “lithium nickel gel battery”. The new development of lithium iron batteries phosphoric acid with dynamic gel is lithium iron (LiFePO4 materials gel battery anode) of lithium ion battery, it is gel lithium ion battery new members of the family of gel.

General lithium ion battery electrolytes are liquid gel, and later developed solid and gel polymer electrolyte, says the lithium ion battery for lithium gel polymer gel battery, its performance is better than liquid electrolyte of lithium ion battery gel.

Phosphoric acid lithium iron gel battery name should be phosphoric acid lithium iron lithium ion battery, the name gel is too long, referred to as lithium iron phosphate gel battery. Because of its performance is especially suitable for power applications, add in the name of “power” two characters, namely phosphoric acid lithium iron battery power gel. Some called it “the lithium iron (act) dynamic gel battery”.

Using the positive significance of LiFePO4 materials

Currently used for lithium ion battery anode materials mainly gel is LiCoO2: LiMn2O4, LiNiO2, and LiFePO4. These component gel battery anode materials, metal elements, cobalt (Co) is the most expensive, and storage, Ni (Ni), manganese (Mn) cheaper, and determine if flexion-extension (Fe) radiographs iron is the cheapest. Approximately 400mah price and the market price of metal. Therefore, it is made of LiFePO4 approximately 400mah lithium ion battery should be gel is the cheapest. It is another feature of environmental pollution.

As the rechargeable battery gel requirements are: high voltage, capacity, good performance, the output voltage recharge cycles stability, macrocurrent charge-discharge, electrochemical stability, safety (not in use for charging and discharging and caused by improper operation circuit burning or explosion), working temperature range wide, avirulent or less toxic and environmental pollution. For positive LiFePO4 using phosphoric acid lithium iron gel battery in the performance requirements are good, especially in large discharge rate discharge (5 ~ 10C discharge), discharging voltage stationary, safety (not burning, explosion, life cycle times), (for environmental pollution, it is the best, is by far the best large current output power gel battery.

LiFePO4 gel structure and working principle of the battery

The internal structure of LiFePO4 gel battery is shown in figure 1. On the left is peridot structure of LiFePO4 as gel battery anode, aluminum foil and gel battery by the positive connections, is among the diaphragm, polymer its positive and negative space, but the lithium ion Li + through and electronic e – not by right is composed by carbon (graphite) by the gel battery cathode, aluminum and gel battery anode connections. Gel battery between the fluctuation is gel battery electrolytes, gel battery by the metal shell airtight package.
In LiFePO4 gel battery charging, positive of lithium ion Li + through to the negative transfer of polymer diaphragm, In the process of discharging lithium ion Li, negative to the positive transfer + through the diaphragm. Lithium ion battery is for lithium ion aerogel charge-discharge back on when the migration named.

Phosphoric acid lithium iron gel battery features

Through the introduction, the battery can be induced LiFePO4 gel.

1 efficient output: standard discharge for 2 ~ 5 cs, continuous high discharge current 10C can instantly pulse discharge (10S) of public,

2 high performance: the external temperature 65 ° internal temperature is as high as 95 degrees, gel battery discharge end temperature reaches 160 degrees Celsius, gel battery structure security, intact,

3 if gel battery internal or external damage, gel battery don’t burn, explosion, safety is best,

4 excellent cycle life cycles, 500, the discharge capacity is more than 95%,

5 after discharge to zero volt and no damage,

6 but fast charging,

7 low cost,

8 for environmental pollution.

Although now of lithium iron batteries for low yield gel, still have a wide range of USES, but in the mobile phone of 3G mobile phone because of weight, volume and power supply ability to put forward higher request, that now of lithium battery has not gel can satisfy the 3G mobile phone use, at the same time, the biggest problem is gel battery will burn, would be the biggest problem. In the lithium battery family only gel lithium iron gel battery is the most appropriate.

So security is the most important, I think the price is high, I think in the temporary own life safety, the user will choose safer gel battery. So the development of 3G should priority in use of lithium iron batteries gel instead of lithium battery ordinary gel.

The company will make his mobile phone safer td-scdma, for the user, please consider using lithium iron gel battery.