digital batteries

In general, lithium-ion battery consists of three parts: lithium-ion protection circuit (PCM), the shell or shell plastic

1. Battery Category

Lithium-ion VGP-BPS10 battery and a cell phone to the situation, generally divided into an external battery and built-in battery, to name a very easy to understand, external battery that is directly installed in the backs of hands, for example: 191 MOTOROLA, SAMSUNG series, etc.; High battery is charging cell phones, but another shell, one in the loop when cell phone batteries, such as: 998.8088 MOTOROLA, NOKIA most models

1. External Battery

External battery pack in the form of ultrasonic welding and loop two kinds:

1.1 Ultrasonic Welding

Shell

Such packages are below the battery casing points, ABS + PC hardware is generally expected, the shell surface treatment injection, in general, the model names: 191 MOTOROLA, SAMSUNG series, the original battery cover long-term use after treatment with injection does not normally wear flowers, and some brands to spend a few days the Dell Inspiron 1300 battery cell or parallel shells began to fall off the fuel injection. The reasons are: the shell of batteries for mobile phones are cheaper, the cost of treatment is usually injected shell several times (good), so that the processing involves three steps: Spray Varnish (land), injection (the formation of color), then light oil spray (the order should be, if I remember correctly), while some manufacturers to reduce the cost of disposing of the proceedings at first and third work order the cost is very low.

The ultrasonic welding presses

His role as follows:

The best of the industry should be made presses ultrasonic welding of the letter Electric Co., Ltd., Shenzhen, Kuwait product.

Welding

With good presses ultrasonic welding does not OK if the weld with the equipment and presses Shell welding setup has a lot to the outer shell is made primarily with manufacturers of relevant equipment to nozzle doping situation, while parameter configuration must find their own way for the company because it involves a number of F4486B technical, unable to say more.

1.2 cards Button

The principle of snap-in design of stacks of the lower crust to form the snap-in, which is usually only once, if the card is getting better off the user opened strong, then it can not recover, but it is not important for the manufacturer in terms of difficulty (good map then folded open), and its representative models: Ericsson 788, Motorola V66.

2. Built-in battery

Built-in battery, there are two forms of sealing, ultrasonic welding and packages marked (using the brand will be the battery all packed)

Ultrasonic welding of the battery are mainly: NOKIA 8210,8250,8310,7210 and so on.

The subject of the VGP-BPS9 battery a lot, like the previous two years was MOTO998 Hu, 8088 by.

2. Lithium-ion battery circuit protection (PCM)

Section II of lithium-ion batteries by the knowledge that we can see that the lithium-ion batteries need at least triple the protection —– Over-load protection, over-discharge protection, protection short-circuit, then they should generated a circuit protection, the protection requirements of circuit protection for these three objectives:

Protection against overload: Protection against overload principle IC as follows: When an external charger for lithium battery, when, to avoid a temperature rise caused by increased internal pressure must terminate the charge state. At this stage, the need to test the battery voltage to protect IC when the time comes to 4.25V (assuming that the point of overcharging 4.25V) or start on the protection of burden would cut the MOS power since the opening, closing and the load.

Over-discharge protection: over-protection principle of the landfill IC: To prevent over-lithium batteries discharge, lithium batteries connected to the case load, when the battery voltage is lower lithium the more-developed discharge voltage detection (assumed to be 2.5V) will start over-discharge protection, power MOSFET to cut the discharge passage of the open-ended to avoid battery-phenomenon discharge, and keep the battery low quiescent current in standby mode, currently only 0.1U. When the lithium battery is connected to the charger and the battery voltage lithium is greater than this period of excessive discharge voltage, over-discharge protection is lifted. In addition, taking into account the conditions of discharge pulse, excessive discharge detection circuit with time delay to prevent malfunction.

Over discharge protection and support to protect the IC main manufacturers are: Mitsumi (MITSUMI), Seiko, Taiwan Fu Jing (DW01, FS301, 302), Ricoh, Motorola, packaging, etc. mainly for SOT26, SOT6

Overcurrent and short-circuit current

For unknown reasons (discharge or negative by metallic objects inadvertently) caused by over-current circuit or short, to ensure security, you should immediately cease its discharge. Terms runway Principles of protection against overcurrent IC, when the discharge current is too large or too short occurs, the protection of integrated circuits should start (short circuit) the current protection, over current detection at this time is power MOSFET’s Rds (on) as a sensor monitoring the impedance voltage drop in the case, if the ratio set by the A1060 voltage-current detection is higher when the discharge stopped, the formula is:

V = I × Rds (on) × 2 (V-for over-current detection voltage, I the discharge current).

Suppose V = 0.2V, Rds () = 25mΩ, and protect the current size of I = 4A on.

Similarly, too much time current detection delay should also be provided to prevent current flow generated when there are unexpected failures.

Usually, after the election of overheating if they can remove the excess current factors (such as the charge immediately and out) will resume its normal state, may proceed with the normal load, the discharge action.

Fruit of the battery is inserted inside the chemical activity in fruits of different metals, such as fruits, electrolytes that are acids can form a galvanic cell.

Fruit batteries generating principle is as follows: two types of electrochemical activity metal is not the same, which side of the keenest sheet metal may be a replacement of acidic substances in fruits and hydrogen ions, as produces a positive charge, the whole system need to maintain stability (or generate electric field, electric field caused by the results below), so the composition of cases, the original Laptop battery, the electrons circuit to maintain system stability, so in theory the current size of the concentration of direct and acid linked to (if it is expressed in terms of the case, then this function and the ionic strength but also Quantitative and qualitative relationships relationship between plasma concentration), in this case, if the loop length change, which would inevitably change the loop, it will also cause changes in voltage.

Fruit production of batteries

Do you know that certain fruits and vegetables you eat can also generate electricity do? Try the following experiment!

Tools and Materials

• 3 lemon (lime may be)

• 3 pieces of bright copper Ge. We use the coin

• 3 Ke galvanized screws (you can also use other metals more active, not necessarily zinc, both for replacement on the list)

• 4 son, preferably with a clip on the wire.

• Knife • 1 small paper label pasted

• Low voltage driven light-emitting diode (LED). We use Radio Shack model 276-330.

• 35 rounds mm plastic film or similar small container. Better to use a black hull opaque film.

• a nail or small punch

Zinc-plated screws are available in most hardware stores. They are also known as “electroplating” screws. For galvanized screws to prevent them from rusting, which makes live appearance looks bright. Wire belt clip can be purchased at hardware or electronics store.

Production Method

First, put all the lemons, one at a time. Side of the rotating part of the hand pressing them until you think they have become a little “soft.” This is done to allow internally generated more lemon juice. This step is very important because it can help you achieve the best results of the lemon Dell Inspiron 1420 battery.

Be galvanized screw screwed into a lemon about 1 / 3. Using a knife, be careful with the lemon on the other side 1 / 3 Cut a 1 cm incision.

Note: The best use of a knife by an adult. In all cases, please “watch” and “Slow” using a knife.

Copper in the incision until the coins in half lemon.

Note: Make sure you use a shiny new coin. If the room in the former, but not brilliant, polished with 100 JIES parts.

Whether or not you believe that you can now get underway lemon! Like other batteries, such as coins, is the positive (+) The screw is negative (-). Unfortunately, the battery is low. However, if you have several of these cells, they can be connected together to form a lemon battery.

As the parts and screws in the other two lemons. Then, using the son and clips, will be the first of a lemon on the screw with the second piece on the whole lemon, and so on, there are three lemon cells connected together. Also a coin to the first and last of a screw connected to a wire with a clip.

Finally, to connect to the first sequence on the part marked “+” and connect to the last screw nailed clip marked “-.” Like a real battery, as the lemon battery is also positive (+) and negative (-).

When the series of articles, these lemon co-produced the battery cells in series with a small flashlight, some produced by the same voltage, or electric potential of about 2.5 volts to 3 volts between the two . But the lemon battery can not produce enough current to the bulb flashlight.

How can we identify the achievement of specific groups of the battery? One way is to require only 2.5 volts to 3 volts, and does not require too much current, the electrical equipment connected to the hp Pavilion dv4 battery. Can use a device known as light emitting diodes can also be called LED. Very low voltage and low current can make the LED light.

The LED used the instructions on the box are 5 mm red LED, 1.8 volt, 20 mA. This means that the diameter of 5 mm LED, it requires 1.8 volts and 20 milliamps of current can be slight. In fact, less than 20 milliamps of current can make a little light-emitting LED. Our lemon battery has enough voltage, but current is not sufficient. We must find ways to observe the faint light. We will film in the shell to cut the outside light.

The use of nails, be careful in the film about half of the outer envelope of the two small holes where the top. Allows an adult to help you achieve this step.

Then a small hole marked “+” another labeled “-.”

PIN LED will be folded into a smooth curve outward. Then, to observe carefully closing LEDs. It is mostly round. However, if it is placed at a specific point of view, you will see a pin near a flat surface. From this plane, the last pin is the anode. Pictured from left pin is the negative terminal of LED. You can see the left-most pin in the vicinity of the surface of the small apartment, do?

The negative pin and the LED marked “-” alignment film shell hole. Will run shell pressed film. Thanks to the LED cathode to the pin marked “-” the hole, then make another (positive) pin through the words “+” hole.

Pull The Pin by the holes and departure to ensure they are marked with the slogan. Film also top of the label on the shell. OK LED to us.

We must all be prepared to wait for the last minute. While the film contains a shell LED marked “+” side of the sony VGP-BPS2A battery alignment lemon marked “+” clip. Lemon battery is marked “-” in the film clip to close the envelope marked “-” side.

Now everything is ready! The LED cathode is connected to the lemon battery positive electrode. The LED cathode is connected to the negative terminal of the battery lemon. LED light!

But the hair of the LED light is very dark, because the current battery is too low. Shells film noir that can help you out in dim light. LED end of the play the role of a magnifying glass. When direct observation of the end of the LED, you can easily see the phenomenon of light.

This proves that you really can be used successfully produced a lemon battery! Congratulations!

Troubleshooting

If you can not see the LED light, try the following methods:

1. You may get anti-polarity of the LED, which is positive and negative reversed. First, a livelier place is the oxidation of the metal, it is more lively foil for the anode and the other end, against less active metal anode. Reverse LED and see if it is light.

2. LED light emitted can be very dark. The LED in a darker room, and make the eyes before the experiment to adapt to lower light.

3. Make sure all connections are secure: to ensure that the clip metal parts VGP-BPS9 and screws the connection there is lemon in pieces and screws are solid.

Millet is often the wonder: If he can not quite understand what the discharge of certain measures. The possibility has completely expired, how do? Loaded until the Laptop battery is in the automatic shutdown, or how much to keep? 

And as pointed out some familiarity Search

If you now have the same problem, such as millet can refer to a look

Should first understand a little on the battery

Secondary Batteries Battery.

Re-use after discharge batteries, including nickel-metal hydride batteries, nickel-cadmium batteries and lithium batteries. The amount of the charge-discharge cycles, mainly due to the reversibility of the electrodes, membranes and structural materials in the charge-discharge cycle stability. The most important use of rechargeable batteries for mobile phones, laptops, digital cameras, portable DVD and so on, the main producing countries to Japan.

Lithium Batteries

To isolate the second Dell Inspiron 700m battery (ie rechargeable) lithium batteries Art lithium aluminum oxide cathode, liquid organic electrolyte and anode materials made of carbon, but also separates between the positive and negative electrodes on the diaphragm, the positive and negative, to prevent short circuits, while the liquid organic electrolyte is contained in a multi-porous plastic insulation membrane is responsible for the work of the ionic charge conduction.

Lithium battery with energy density, operating voltage of the high temperature range, no memory effect, long life, etc., but the higher price.

The latest digital cameras with lithium batteries, there is no memory effect, open the flash and color LCD display faster than the use of nickel-metal hydride batteries to be efficient. But the mobile phone market, especially nickel-hydrogen batteries have memory effect, more power than the standard nickel-cadmium batteries, a long and load faster. Memory effect in nickel-cadmium VGP-BPS9 batteries are the heaviest.

Memory effect

If each charge in the negative electrode, the role of cadmium and have produce hydroxide to metallic cadmium in the negative electrode deposited surface discharge, the negative electrode surface of the metal cadmium in response to the formation of cadmium hydroxide, which is broken – the deposit reaction when the charge incomplete discharge, the electrodes inside the cadmium metal slowly produces large crystals Er Shi hampered by the chemical reaction, leading to capacity to reduce the performance of the material, namely the so-called memory effect. Early use of nickel-cadmium batteries, this effect is most evident.

Nickel-cadmium batteries, because of strong memory effect, it is easy to load and unload because of poor, which leads to less available capacity, should facilitate the use of 10-that is to do a full charge and discharge when it memory effect, then three times in succession can do on the five complete charge and discharge cycles to release the memory. Ni-MH battery memory effect due to the weak (can be said that almost none), so about 50 times when we used to do in order to complete loading and unloading.

The next step is to deal with a lot 

To start in the following cases, the battery for processing:

1. Has recently opened a new battery.

2. For a long time the battery not the battery from your computer using a storage situation is now being re-enable this battery.

3. A long time do not use the battery from the notebook or laptop stand of memory (more than two or three months) and are now re-enable the battery.

The battery to start treatment methods:

Start the chemicals in the battery to maximize hp F4812A battery performance, by repeatedly charging and discharging of the battery (fully charged and then fully discharged) three times. The so-called complete charge and discharge cycles: the normal boot, so that the battery consumption to 3% of battery power (preferably once exhausted, can be divided into several times to come to power, but not too long) break, and it must immediately shut down the battery twelve hours.

Here, stressed the need to immediately charge the battery because the battery will be carried out without the use of self-discharge when the battery to 3% of the electricity in that time if the battery can time the phenomenon of self-discharge of the battery easily lead to over-discharge costs of the battery discharge on lithium batteries is a big taboo.

Start the battery charging process, the machine must be switched to. If the machine at this point to wait until the conclusion of the State may, if the load is up to 3 ~ 4 hours after the green power status indicator lights no longer beat, the machine will automatically stop charging the apple A1022 battery, so the battery is not fully loaded. If the discharge to 3% of electricity, the machine will automatically go into sleep mode immediately should this time be rebooted the machine, the machine starts the process, click Stop button on the bottom left of the screen, so that the machine is shut down.

If this operation had a good view of every detail, and the quality of your battery is not a problem, we may very well start the battery of chemical substances in order to maximize the performance of the battery, is basically a normal battery after each use of the be able to charge to 100%.