Repair method of bump battery pack

About the cause and analysis of expansion during lithium battery application of mobile phone:

Battery won't inflate for a long time under normal circumstances. The expansion reason is that the battery charging time is too long. It will not affect the usage, but the standby time will be shorter and shorter. The cause of the expansion of battery heating:

1, when the mobile phone in standby power consumption is very small, that is to say, its battery equivalent load resistance is big, so the discharge current is small so the battery won't be hot, battery power consumed is small.

2, mobile phone in phone or at the time of the power consumption is a big game, that is to say, its battery equivalent load resistance is small, when work is a large current discharge. The battery after put off part of the electricity, internal resistance increases, however, need to current can't phone work

Decreases, and then, a considerable part of energy consumption on the battery internal resistance, cause the battery heat, discharging speed, battery life, they quickly shorten.

Above is the cell phone battery in use for a long time will be the cause of the fever.

The dangers of mobile phone battery heating:

1. Mobile phones battery long time heating can lead to internal parts fever, enabling to reboot or hang up the phone call.

2. The battery long time heating will increase the heat of the battery itself, if it is sealed (such as NOKIA is not sealed, is directly to the battery into battery will make its internal air dramatic expansion, lead to the battery as vegetative, serious can make

The battery explosion

3. The battery long time heating aging process will accelerate the phone itself, shorten its life.

Above is the cell phone battery long time heating to the harm of cell phone.

Mobile phone battery fever prevention and solution:

A. Prevention methods:

1. The phone in normal room temperature, heat less than 60 ℃ is a normal phenomenon, will not damage the battery.

2. The use of large current charger time should not be too long, too long charging can make the battery is damaged, it will also generate heat.

3. The charger it is best to use the original or better reputation for quality products.

4. If you don't hurry to use, suggest or charging seat charger (slow filling way) as well, not make the battery heating.

5. The use of mobile phones while listening to MP3 or battery such as feeling a bit hot, can use * # 0228 # to check the temperature, such as more than 60 ℃

Immediately return to standby mode or in piece of battery, such as in charge immediately unplugged chargers.

2. Solution:

1. If the battery has been filled out, also can work it out. The gap is to use finger to find battery first (near the mobile phone charge electrodes on one side on the back of mobile phone battery, press down a bit soft), use for to poke a hole, let me

Run out of the air inside.

2. In addition to buy a battery.

We know mobile phone battery is a source of electricity, also is the power for mobile phones, no battery power supply, mobile phone is a piece of iron, a high capacity of high performance battery, not only for long battery life, the mobile phone and also can protect the hands

Machine circuit that enables the phone to efficient work for a long time, the opposite is likely to phone appear unexpected damage. And for our players, the performance of the battery at the time of the factory, has already been qualitative, the size of its power, sex

Can be good or bad, are determined by the battery itself, in this respect we can't change people, but this is not to say that after we get the battery, it can't do it. Cell phone use is lithium ion rechargeable batteries, use

Storage battery run out, need recharging can supplement power. You don't look down on charging this link, a good charger and the correct methods, can keep the battery long standby time, more can prolong the service life of batteries. Further

Step that and it can also be for mobile phone protection. Methods on how to charge, after a period of time to their actual use and reference, I summarized the following points:

1. The general lithium electricity activation processing pool before leaving the factory, manufacturers, and in charge, so the batteries are more electricity, buy new phone's battery is lithium ion, so 3 ~ 5 times before charging called adjustment, should be more than 14 hours, ensure fully activate lithium

The activity of ion lithium ion batteries No memory effect, but there is a strong inertia, should give fully activated, ability assures to be used later to achieve the best efficiency. About the charge for the first time this problem, the original lithium-ion batteries, had to do before they go out

The full activation treatment, don't have to use the method of charging for a long time to activate the activity of the lithium ion, for the first time as long as more than the battery charging after full of can.

2.Some automated intelligent charger when the indicator lights change quickly, in fact only filled with 90% said the charger will automatically change with slow charging the battery is full. Don't turn off the charger power immediately, to best

Fill a battery, the battery is full before using, otherwise it will shorten the using time.

3.Do not need discharge before charging, lithium battery, also can not discharge, the current production of lithium battery charger is no discharge function, if can adjust the speed of charging, recommend to slow as far as possible when charging batteries, reduce the fast charge

No matter slow or fast filling time don't more than 24 hours. Otherwise the battery will probably because of long time of the electron flow and burn out of the power supply have a huge battery.

4.Return when there are a lot of users in charging the phone open, in the process of charging, the battery side to discharge because of the use of mobile phones, and inward for battery charging power supply, is likely to make voltage disorder lead to cell phone circuit boards will be fever, such as

Fruit a call, will produce instant return current, damage to internal parts of mobile phone.

5.Battery life depends on the number of repeated charge and discharge, continuous charging and discharging lithium batteries can be about 500 times or so, after the performance of the battery will greatly abate, should avoid as far as possible put all over the battery recharging, otherwise as charging times

Increased, battery performance will be fade away, battery life it is not easy to not drop.

6.Don't put the battery exposed to heat or cold, like the dog days, should not put the phone in the sun, through exposure to the sun; Or to the air conditioning room, where air conditioning blows straight. When charging, the current products back, a battery

Fever is normal.

7.If the phone battery unused for too long, to the best mobile phone application for battery maintenance department an activation treatment,

Also can use a dc manostat, and adjust the voltage of 5 ~ 6 v, current 500 ~ 600 ma, reverse connect battery. Note that a touch namely opens up to three times after this treatment with original charger for "adjustment".

8.Charge is not the longer, the better, for there is no protection circuit after the battery should stop charging, otherwise it will affect performance because of fever or overheating. Battery charging time of theory calculation method is as follows: lose power divided by the number of battery charger

Current can, for example: with a capacity of 800 mah battery, for instance, the charger output current of 500 ma so charging time is equal to 800 mah / 500 ma = 1.6 hours, of course, this is just a full charge of the theory of time calculation, when the charger

Show charging is completed, and we should give about half an hour or so to fill battery time. Lithium ion battery must choose special charger, otherwise it may not meet

Saturated state affects their performance.

Mobile phone batteries at present basically have 3 kinds: nickel cadmium (NiCd) battery; Nickel hydrogen battery and lithium ion battery (NiMb). Nickel cadmium battery can load large current, rapid charging, the disadvantage is that the battery is prone to memory effect, nickel hydrogen battery,

It has been in the industry known as "green battery". It is the good quality mobile phone batteries, safe and reliable, and environmentally friendly batteries, lithium ion battery storage energy density is higher, can reduce the weight of the mobile phone. The disadvantage is that the high cost.

Prolonged use of mobile phone battery, and should pay attention to the following aspects:

1, Quick charging some automation intelligent fast charger, when the indicator lights change, said with 90% charger will automatically change with slow charging the battery. The battery is full of best after use, otherwise it will shorten the using time.

2, Battery memory effect Nickel cadmium battery long-term, no charge, discharge, easy to leave a mark inside the battery, the battery capacity, according to the phenomenon of battery memory effect. Specifically batteries seem to remember the charge and discharge rate and user everyday

Mode, time is hard to change this pattern, can no longer do greatly charging or discharging.

Three basic methods and charging characteristics vary with the battery, so should be carried out in accordance with the manufacturer specifications indicate the method of charging. Standby state, the phone has cost battery. Such as a quick recharge, must first after the phone closed or remove the battery

4, on a regular basis to erase a memory cell with memory effect, so must regularly remove the memory, and approach is to completely discharge the battery,

Discharge and filled again. Can use discharger or with functions of discharge of the charger, also can use a mobile phone standby mode. If accelerating discharge can be opened the screen and the touch-tone lamp to ensure full of battery, should be in accordance with the specifications

Instructions control the time and repeated charge and discharge two to three times.

U chooses power-saving mode GSM standard has an advanced functions, which most of the mobile phone has the discontinuity "DTX" launch power saving mode. In order to save electricity, when the owner is not defender, telephone temporarily reduce the power launch waves, experimental proof,

DTX power-saving mode can extend the time of 30% to 50%, in the quiet situation should switch to relatively static, the shorter the phone ringing, choose close screen or buttons lighting. Cold to avoid the battery temperature is too low, otherwise will shorten use time

.

The use of lithium ion battery, pay attention to three things:

1, how to new battery

That should be paid attention to in using lithium battery, the battery is placed after a period of time to enter a dormant state, capacity is lower than normal at this time, use time and thus reduced. But the lithium battery is easy to activate, if after 3-5 times the normal charge and discharge cycle

Can activate cells, and back to normal capacity. Due to the characteristics of lithium battery determines its almost no memory effect, so the user new lithium battery in the process of activation, is don't need special methods and devices. Not only is so in theory, from me

Their own practice, from the start with a standard method of charging this way of "natural activation" is the best.

For the "activation" of lithium-ion batteries, many say: charging time must be more than 12 hours, if you do this three times, in order to activate the battery. This "in the first three time charge to charge 12 hours", apparently from nickel battery (such as

Nickel cadmium and nickel metal hydride) continue down. So that, say the outset misinformation. Charge and discharge characteristics of lithium-ion and nickel batteries have very big difference, and can be very clear tell you, I have looked at all serious

Formal technical data will emphasize overcharge and over discharge of lithium batteries, especially liquid lithium ion battery caused great damage. So charge in accordance with the standard time and standard method best charges, and especially don't charging for more than 12 hours long.

In addition, lithium battery or charger will automatically stop after the battery is full of, there is no nickel electric charger of the so-called "trickle charging for 10 hours. That is to say, if your lithium battery, after full on the charger is Bai Chong

. None of us there is no guarantee that the battery charge and discharge protection circuit will never change and quality according to the features of foolproof, so your battery will be on the brink of danger for a long time. This is another reason we object to a longer charge.

In addition to some machine, charging after more than a certain amount of time, if you don't go to remove the charger, the system does not stop charging, will also begin to discharge - charging cycles. Perhaps this vendor has its purpose, but obviously the battery

It is a bad life. At the same time, the charging takes a long time, often need to be done in the night, and to power grid in China, many places are relatively high voltage in the night, and volatile. Having said that, in front of the lithium battery is very charming

Expensive, it's better than nickel electric resistance to fluctuation in charging and discharging ability worse, so it brings the risk of additional.

In addition, another aspect cannot be ignored is the lithium battery is also not suitable for discharge, and over discharge of the lithium battery is bad also. This leads to the following questions.

2, when in normal use should start charging

Because the number of charge and discharge is limited, so should be lithium battery electric light recharging as much as possible. But I find a lithium ion battery charge and discharge cycle experiment table, the cycle life of data are listed as follows:

Cycle lifetime (10% DOD) : > 1000 times

Cycle lifetime (100% DOD) : > 200 times

The DOD is the abbreviation of the depth of discharge. From the table, but the depth of the number of charging and discharging, 10% DOD in the cycle of life is much longer than 100% DOD. Of course, if reduced to the actual charge relative to the total capacity: 10%

* 1000 * 200 = 200 = 100100%, the latter to fully charge and discharge is still relatively better. Under normal circumstances, you should have a reservation, according to the principle of battery remaining power run out to refill charging, but if your batteries in your expected to 2 days

Insists during the day, you should start charging in a timely manner, of course, if you are willing to carry the charger to the office when BieLun again.

And you need to charge for the upcoming is expected to lead to the communication of the most important events in the busy, even when there are a lot more than battery, so you can just charge in advance, because you didn't really lose "1" time charge cycle life,

Is "0. X" time, and often the x will be small.

Battery remaining power used up to the principle of charging is not want you to go to extremes. And long charging as widespread as a saying that is "as far as possible to get all the machines with battery power, and had better use automatic shutdown". It's really just nickel electric

Pool, the purpose is to avoid the memory effect, unfortunately it is spread on the lithium battery today. Once someone because machines low battery warning, without a charge to continue using has been used examples of automatic shutdown."

Fruit machine in this case no reaction in the later charging and boot, had to send to the maintenance of the service. This is because the battery voltage is too low, caused by the excessive discharge that do not have normal charging and boot conditions.

3, on the right way of lithium-ion batteries

In the aggregate, and the most important problems of lithium battery charge and discharge in the use of tip is:

1, according to the standard time and procedure charging, even so will three times before;

2, when the machine power is too low when prompted, should try to start charging in a timely manner;

3, the activation of the lithium battery does not need special method, the machine in normal use lithium battery activation naturally. If you are determined to use of "three times before 12 hours long charging activation" approach, in fact there will be no effect.

Therefore, all the pursuit of 12 hours long uses the lithium battery charging and the practice of automatic shutdown, are wrong. If you've made according to the error, please correct in time, maybe it's not too late to too.

4, use lithium-ion batteries pay attention to fire prevention

There are a lot of people probably began to be familiar with lithium battery from the phone. In fact, it has used in many household appliances. There is no doubt that lithium battery efficiency, light weight etc. Advantage is making its application quickly. But, you know, to use

Accidentally, it will also make you mess with "fire".

Lithium battery has a light weight, high efficiency, the advantages of resistance to low temperature 40 ℃ (-), 0.3 mm thick, the size of a stamp lithium battery can used more than 5 years in a row, has been phased out in recent years now with alkaline manganese batteries and batteries, widely used in many high-end home

Electricity and phone

Lithium battery is different from the active manganese battery and alkaline battery zinc chloride and potassium hydroxide water soluble electrolyte, it USES organic solvent. The positive using manganese dioxide, lithium battery materials, such as lead, sulfur chloride and fluoride, the cathode used in lithium metal foil

Compared with general battery cathode using zinc chloride, strong ionization tendency, anode voltage difference is big, this improved the performance of lithium-ion batteries. However, the lithium battery in use process often appear fever, burning phenomenon, light person affect host USES

, the person that weigh can cause fire burned host. It is reported that Japan in recent years there have been many causes of lithium battery heating combustion fire accident caused by the family. So why lithium battery fever, burning? Many of the original lithium-ion batteries in the material after contact with water

, can happen violent chemical reaction and release a large amount of heat energy cause fever, burning phenomenon. Lithium manganese dioxide battery anode, with only a small drop of water can be fever phenomenon. The lithium battery of chloride and sulfur, after contact with water in the generated hydrochloric acid and two oxygens

Sulfur releases heat at the same time. Several factors make lithium battery become popular in life, so people in the use of lithium battery when must pay attention to waterproof, moisture proof. Various host machines should remove the lithium ion battery in a dry, low temperature for safekeeping to prevent and avoid cause by improper usage of lithium ion battery.

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