digital batteries

Like talking on the cordless handset and wait longer and longer, but also support other types of complex wireless applications, integrated power is becoming a significant demand for these products. This article will deal with the battery, battery systems and energy conversion. We are the first topic for discussion is the heart of the system: the battery. The content of the discussion include the type of battery, VGP-BPS9/S VGP-BPS9/B battery charge and discharge, as well as system maintenance, we will consider energy needs, safety considerations, costs, unit cell (cellular) number of impacts environmental, life cycle, the unit cell fixed amount. Mesh, battery and battery the battery is a chemical reaction is an inherent tension, the battery voltage is the nature of a chemical reaction, its structure or the size and battery size. If a component can produce such an inherent tension is called a “cell unit” (cell). A battery “(battery) May contain many units of batteries can be series, parallel or mixed with, and all placed in the same case in the file. In a shell “stack” (attached) in the battery or batteries in multiple units, and these units has its own battery or the battery case, then the shell pile is called “battery (pack). Applications can also use multiple battery packs, perhaps because it required power exceeds the supply capacity of a battery, perhaps to allow a battery, the other battery is charging or maintenance. Such applications may have circuits of battery management requirements of some other order in the charge cycle at different times or under different conditions of installation and removal can be performed sequentially on each battery. Cell Structure, nomenclature unit cell there are two reaction surfaces, their chemical composition is not the same, and by a chemical reaction can not afford to separate the conductive layer is not fixed separated in the reaction between the surface will be filled with electrochemical reaction of a good material, known under the name of the electrolyte in the battery the more commercial, the electrolyte is a liquid or a gum, but in some rare cells May be gas or solid. The surface reaction, there are contacts of the circuit (tabs), in which a high potential for contact materials are in contact, equipment and low potential for negative contact. Inside the the battery case there are two particular areas to the other for non-drivers, mainly the battery positive and negative of these positive will be connected to the device via a line inside the PA3399U-1BRS PA3399U-2BAS battery positive contact, the electrode be negatively related to negative contact. Since the vast majority of cells are cylindrical, so that vendors will be covered with a layer of anode material of the separation layer, then covered with a layer of material of anode, the final when they are rolled into cylindrical cells. On the other hand, if we can reduce these layered materials covered, you can make a space more battery saving square. Lead batteries of acid on the use of the square of the hull, the battery will be added in the electrolyte, and then the positive and negative electrical panels panels rotate film is fixed, and immersed in the electrolyte. What the battery? The battery using chemicals or ion exchange reaction, the energy stored in the potential field that result. For disposable batteries (or battery) that want to use the circuit operation restoration of these reactions is a thing possible or practical, but for rechargeable batteries (also known as secondary batteries) and the words, if we applied a voltage, which is more important than the battery voltage, you can restore these responses, while the energy stored in the stack, rather than removing power from the battery. Battery management is running a series of chemical reactions. Battery Why do we need management? The so-called “secondary chemical reaction” means a place in the pile of the chemical reaction between components, that is, store and release energy and thus a reaction other than a chemical reaction. secondary reaction will not be released as heat further, but with time and the life cycle (time of loading and unloading) increase, but also produce some solid, liquid or gaseous, in particular the reaction in solid impurities in the cell surface on the crystal and the burden of coverage can be used to store a page of “reaction” (reaction sites). The heat of evaporation of liquid or gaseous electrolyte lighter components, if the rate of gas production is higher than components of the A1060 M8403 battery can absorb, it will generate the internal pressure of a sealed battery, sealed battery without cause “gas leak” phenomenon, and change the combination of chemical ingredients. If we are already at full potential in a battery continue to exercise power, then the rate of secondary reactions will accelerate significantly, the battery is so-called “on-load (overload), it not only reduces the capacity of the battery storage loads, but also shorten the life cycle of the battery; In addition to the chemistry of the battery some, excessive discharge May cause the same effect. To release the pressure inside the battery may be sealed by these gases at high pressure is off, it may cause temporary or permanent damage. The battery has a “self-discharge rate (rate of self-discharge), which refers to the current supply of external loads n ‘ is not the case, the battery of its own “escape” velocity of electricity storage. When the battery is finished loading, we still need to perform maintenance or “floating” (float) charge, and the percentage rate shall be equal to the battery-discharge rate for the battery remained at full power state. Batteries are often used together in series or in parallel. If the adoption of these works, so that a slight difference between these batteries, it is possible for the chemistry of the battery some have a huge impact. Therefore, the battery manufacturers and OEMs require batteries must have the same chemical manufacturers, the time to plant, and even the number of production lot. And even a little chemistry of the battery or the need to keep all batteries. Of all the commercial batteries, manufacturers will be in the unit cell to release pressure within the structures of security to on-load situation is extremely serious, in a gas emission control. Some cells also contain components, as well as components fuse-temperature protection, which are the most common lithium-ion batteries. Choose rechargeable batteries, the chemical mechanism that will be used to select for specific battery chemistry, we must let the battery chemistry and applications of characteristics that complement each other in business applications today, it are five kinds of commonly used battery chemistry. Dell Inspiron 1525 battery  Dell Inspiron 1526 battery

Traditionally, consumer products, appliances are mainly nickel-cadmium batteries, rechargeable batteries, because the nickel-cadmium batteries are a mature product, and we understand the chemical reactions of nickel-cadmium batteries. On the other hand, metals cadmium, their administration has become increasingly stringent in some areas, it must also make recycling compulsory associated with nickel-cadmium batteries is a mature product, and thus the capacity and life cycle not too much room for improvement. Compared to nickel-cadmium batteries, in terms of unit weight or unit volume density of energy storage, batteries nickel hydride provide a significant performance improvement of lithium-ion batteries in turn , went further, because its density storage of electrical energy that more than double nickel-cadmium batteries. Although nickel-metal hydride or lithium-ion chemical mechanism has its merits, but the drawback is that the circuit very sensitive to them, the lithium-ion mechanism, in particular clear that c ‘ is not only because the battery is damaged by mismanagement and electrolyte May ignite if the battery management is very important. Manufacturers will normally be an internal lithium-ion battery with a number of mechanisms for protection against defects to voltage / current is too large or the temperature is too high, and when the battery charge and / or circuit feeder between the cup In addition, most vendors will be inside the battery installed another series of special tours can be restored to provide protection. However, nickel-metal hydride or lithium-ion PP2182L HSTNN-LB31 battery power supply capacity is still smaller than nickel-cadmium batteries for more power, but can not use external power of the vast majority products, nickel-cadmium batteries is always the best choice. Alkaline batteries with rechargeable batteries as well as the shape of the main purpose is to replace these disposable batteries, although the price of an alkaline battery is about twice as much, but the battery life is concerned, the overall cost of the latter is much weaker. For the application of low current applications, they are not only the chemical mechanisms charge the most expensive, but it also has the lowest self-discharge rate. Life of rechargeable alkaline batteries in the shortest cycle of disadvantage is that if all cycles of charging and discharging, the battery is fully charged, then the type of battery can be used about 25 times.

Li-ion battery memory effect will be

Many friends believe that the power lithium battery must be used, or memory effect may also occur, in fact, this concept was first nickel cadmium batteries, nickel-cadmium batteries are the memory effect, so let him go to make electricity, the Laptop battery will be increased with the frequency of use while showing less and less state energy, and later nickel-metal hydride battery has been improved, had no obvious memory effect, because the nickel-metal hydride battery or will a certain degree of lattice leads to volume reduction still need to complete the regular charge and discharge to maintain its ability normal. Lithium batteries there was virtually no memory effect, you can at any time without affecting the battery charge and discharge capacity.

From another point of view, the memory effect of the battery refers to battery failure reversible, that is, after the failure of the battery can be re-back performance. The lithium battery is not reversible, performance and capacity continue to decline as the use of, there is no lithium batteries memory effect, another, thus eliminating the need for charging the deep memory of the deep cycle battery, which is the battery voltage to reach 1.0V, mobile phones can not stick to the battery voltage to 1V off their phones before nickel cadmium batteries require specialized equipment to conduct such a depth of discharge.

To summarize, there is no lithium batteries memory effect, the user need not worry, we can agree with the birth of lithium batteries is to eliminate the problems caused by the ‘memory effect, so that you can recharge the Dell Inspiron 5100 battery at any time without any worries.

The new lithium batteries are necessary to activate

This is an old subject, a majority of consumers is necessary to activate the battery, almost all of the sales staff so that the battery is first three full 12 hours, and to activate the battery. Most consumers do, and some people poor battery performance attributed to the activation of the battery is not good.

So do batteries need to activate? The answer is yes, you need to activate! However, this process is completed by the manufacturer, has nothing to do with the user, the user had no means complete. Lithium batteries actual activation process is as follows: lithium-ion battery electrolyte impart SHELL – Seal – as it is a constant voltage, then discharge, so for a few cycles, so that complete infiltration electrolyte electrode fully activated until the date requested capacity, the activation process – under capacity, which means that after the lithium-ion battery plant to the user is already turned off the hands of the. In addition, some processes require the activation of the hp Business Notebook nx7400 battery cell in the state open again after closing, unless you have batteries, manufacturing equipment, or how to accomplish?

But why some descriptions of products able to read, easy to use three primary users should be on the phone a full charge and discharge? Is it not to activate? Indeed, the fact is that the factory battery, then the sale, then the hands of the user should experience a period of time, one or more months in this way, the battery materials electrodes will be “passive”, proposed the initial specification using the three fastest times of the fully charged battery-discharge process, to quickly eliminate passivation of electrode materials to achieve the highest performance. However, this process does not require a full 12 hours, it must be completed. In fact, we ignore this point, the normal period of time can also be used to eliminate passivation.

Li-ion battery can load and unload 500 times

I think the vast majority of consumers have heard the sony VGP-BPS2A battery life of lithium is “500 times, 500 charge and discharge more than this number, the battery on the” end “, and many friends to be able to prolong battery life, each time in to recharge the battery when it is completely exhausted, and thus extend the battery life really works? The answer is no.

In fact, there is a conceptual error, the battery life of lithium is “500 times” refers not to the frequency of recharging, but a charge-discharge cycles, for example, the first charge of 40% with a period of time and later occupied by 20%, other and later used a load of 30%, then the next … 20% … 20% in the middle, or only 10% of electricity when the cumulative total to complete a charge cycle. Followed by the next cycle.

1 lithium-ion battery on the first day, only half the electricity, and then it is fully charged. If the next day too so, ie with half the load, a total of two charge down, this can not be counted as one charge cycle, rather than two. Thus, it is usually possible to cross several times to complete a charge cycle. Each complete a charge cycle, energy consumption will be reduced somewhat. Once However, the reduction of the amplitude is very low, high cycle toshiba PA3399U-2BAS battery quality of many officials will retain the original capacity of 80%. Suppose a complete discharge of electricity is the Q, a cell cycle 500 times, it is then subject to the life of the total power is 500Q, if we use half the electricity load, fixed number of charge cycles for A, a simple solution, a / 2Q * A = 500Q, A should be 1000. So for the life of the battery, you can use the measurement cycle, but we do not use numbers to quantify.

The pursuit of high performance and overload in relation to rejection

Some of our friends in pursuit of battery performance, as over-charging and discharging of the battery. Lithium-ion batteries that will cause permanent damage to the positive and negative, from the molecular level of intuitive understanding, an excessive discharge of carbon anode will lead to excessive release of lithium-ion and shows a lamellar structure collapsed, too much will overload the lithium-ion structure in hard carbon going into the anode, causing some of the lithium-ion batteries can not be released. Therefore, lithium-ion BATBL50L6 batteries are usually equipped with charge control circuit causes discharge.

In addition, most cell phones now use pulses of high current at full load to nearly full power quickly when the overpayment, to prevent the circuit from the pulse high-current is converted a gradual reduction of the burden of maintenance, so even if the power to detect some bias due to the most comprehensive electric current is smaller at the last minute of the load current is near 0. So for these devices load, overload is also a wasted effort.

For the performance of lithium batteries used in 100, after reaching a peak is also false to assert, for liquid lithium-ion batteries, but there is no such phenomenon hump cycle capacity lithium battery factory ion batteries in the final retreat, the performance of its capabilities is to use a short time, the performance cycle will not rebound.