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.

1. Elements of a battery option

AGM battery with a low cost advantage of large discharge current, but there is a narrow range of temperature, the VGP-BPS2A battery easy to dehydration and heat control deficiencies and gel batteries are expensive, but it was stable performance, range of temperature, resistance to more than off-load discharge, long life and so on.

As battery electric bike, in most cases, are high current, depth of discharge cycle, therefore, better adapted to use electric bicycle batteries gel batteries. Gel batteries are highly resistant to over-discharge capacity and high electro-hydraulic retention, excessive discharge of the battery to avoid the impact due to dehydration caused by thermal runaway phenomenon of generation of cells.

Rechargeable lead acid batteries of different brands are basically the same characteristics, but because the manufacturers of the formulation of the battery material, electrolyte concentration and content of Deng Jun different charging voltage are also some differences, therefore, strictly speaking, should be based on the manufacturing of batteries given specific requirements for determining the charging voltage of the PA3399U-1BRS battery program, otherwise easily lead to misuse of the battery.

Motor bikes and electric power output of batteries to match the power rating, so in order to prolong battery life, power bicycle motor to the extent possible, the battery is less than the nominal power to avoid the battery at full load or overload of work long-term conditions.

2, the efficient use of battery

The battery used in tandem, if the internal resistance of the battery is incoherent, in the process of loading and unloading the voltage across the battery would be inconsistent with any group that will eventually lead to premature failure of the pile because load. Therefore, electric bicycle, the consistency of the balance of the battery, the battery has a considerable impact. For consumers, fair use, but also on the balance of the consistency of the battery to some extent, affects the battery life. Based on the battery during the years of research and actual use, we recommend consumers to use the following methods of rational use A1060 batteries;

(1) Electric Juji line speed: 20-25km / h.

(2) Riding distance: 10-30km per day, depth of discharge less than or equal to 70% (once every 2 months, deep discharge).

(3) the load frequency: once per day.

(4) Charge: Ride single (which can carry a 10-year-old child under one).

According to the above method, good quality electric bicycles can be made in the normal use of 3-4 years or five years, and can use a battery and a half years or both. The depth of lower depth of discharge of the battery, the life cycle of the battery cycle longer battery life longer. Therefore, consumers are generally regarded as one of a charge cycle is wrong, to make their own use to prolong battery life, we must always leave the battery is fully charged state, a state of an extended power outage, the negative battery vulnerable to salinization, resulting in loss of LCBTP03003 battery capacity, affecting the battery life.

3, the battery maintenance

Qualified electric bike batteries manufactured by the manufacturer of the battery, the battery life and performance to some extent depend on consumer use and maintenance.

(1) Matching and battery charger.

Batteries for electric bikes is a bad charge, rather than harm, we can see the importance of matching chargers and batteries, there are two situations: first, the new charger and battery manufacturers to ensure their own settings do not match, the second is the load device itself, poor quality components, the beginning of use, fairly matched, that the burden of consumers and discharge cycles to use, the charger itself same is due to temperature, aging of components, where the charge voltage and switch current drift, the FK890 battery is damaged.

And manufacturers of electric vehicles recommend that consumers buy the best manufacturers corresponding battery charger, not because of momentary greed expensive rechargeable batteries bad, but not worth the candle.

(2) regular, rapid recovery of electricity.

Consumers in the statement on the use of life cycle is usually nominal, there is a misconception that to recharge a battery, the battery reduces the time, so whenever the consumption of battery power, as voltage protection for the controller began to add electric 31.5V did not know that this does not only fail to protect the battery, but also shorten the battery life. So, remind the majority of consumers, if possible, promptly complete the F4812A battery.

(3) Non-LED displays the voltage, to continue riding. Some consumers in the half-way ride, indicators show the state of tension, after taking a rest and then a way of riding, so much wrong with the battery, the battery will discharge in a serious salinization or generate sticks of lead crystal, so that short-circuit the battery, which affect life expectancy.

(4) electric bike is just beginning, climbing, overloading should try to help.

(5) on the road the rain, they should avoid wetting the switches and connectors to prevent leaks.

More knowledge about battery used lead acid batteries for electric bicycle maintenance and repair has a positive side, thanks to technological improvements, including improved technology to freeze the current cost – effective lead-acid batteries with other batteries of a great advantage over.

When lithium-ion batteries are now cell phones, laptops and other mobile electronic devices, the provision of basic amenities, but also began to apply to light electric vehicles, hybrid vehicles and electric. However, due to the rapid growth of demand in the cost of lithium-ion batteries become increasingly important, due to improved energy density batteries, accidents Laptop battery safety have also been reported. Lithium-ion battery industry is currently an imminent major adjustment of the structure, dynamics and cell energy storage associated with industrial materials, processes and equipment at the direction of major technological innovations.

Using a variety of ways to increase security

Engaging the Material Safety battery, battery design, manufacture and application in many aspects, just changing the cathode material can not completely guarantee the security of the battery. Only the main material is necessary to carefully select the material of anode, electrolyte and battery separator, as a lithium-ion battery anode materials are materials of carbon, oxides of metals and alloys, graphite materials is still today a large lithium-material ion battery anode, however, its safety performance than the hard carbon materials, while the titanate spinel materials of the lithium anode has a higher security. May withstand higher temperatures using a new electrolyte membrane and the treatment of flame retardants is to improve the safety of lithium-ion IBM ThinkPad T43 battery technology.

Affect the safety of lithium-ion batteries are a major factor in the electrode materials of the drums, electrolytes and manufacturing processes and conditions of use. A cell phone used in the lithium-ion battery weighing about 20 grams, the basic requirement is that the likelihood of security incidents occurred less than one in one million, which is publicly acceptable minimum standards, the Reality is more than 1 / 10000000 small. Electric Bicycle Lithium-ion battery packs used in weight from 3 kg to 4 kg, 100 times larger than a cell phone, pure electric cars use 300 kg to 400 kg of batteries, as electric bus, or weight Battery electric trucks will be 1500 kg and 2000 kg, even more “mobile” 75,000 times ~ 100000 times. As increases battery capacity, the possibility of a significant increase in security incidents. Therefore, the battery is lithium-ion batteries, it must improve its safety performance over the single cell, asking for security indexes as high. Such as commonly used in batteries for mobile phones in the cobalt oxide and lithium use graphite as a lithium-material ion battery anodes to the positive hp Pavilion DV1000 battery post to large scale security l ‘licensure will not be guaranteed.

China started to conduct research and development of lithium-ion battery electric vehicles when there were a number of explosions and burn injuries, one of the main reasons is that the use of batteries for mobile phones are generally used in the cobalt oxide, lithium as cathode material for batteries. Then browse to the cathode material replacement for lithium cobalt oxide to address issues of safety is the driving force-type lithium-ion battery R & D a top priority. China high power lithium-security issues of ion battery in the “Tenth Five-year period” was a better solution. Using modified cathode materials of lithium manganese oxide reduces the nature of the content of lithium cobalt acid lithium as active low. Japan’s mass-produced the battery capacity of lithium manganese monomer small, as publicly reported in the 3000 Tokyo Power battery electric car for 216 13Ah lithium manganese batteries.

Lithium iron phosphate as cathode to better security

On the cathode, the lithium iron phosphate (LiFePO4) Charge-state thermal stability of the oxidizing capacity of the electrolyte level is low, with better security, can be used to make a larger toshiba PA3399U-1BRS battery. LiFePO4 theoretical capacity of 170 mAh / g, compared to the voltage 3.5V lithium metal, made of materials, the actual reversible capacity above 160 mAh / g. In comparison with other materials, lithium-ion chemical diffusion coefficient of LiFePO4 electronic conductivity below room temperature is far below that of other cathode materials, the need for reducing the size of the material, coated d Agent driver how to improve the material properties and the realization of applications use the default has introduced a low density, the volume is too great and the electrolyte of the battery more. The current research effort is to develop new methods of lithium iron phosphate synthesis and hardware has been modified to improve the overall performance of lithium iron phosphate.

The first synthesis of railway lithium phosphate JB Goodenough reaction in solid phase. This method is simple and convenient, easy to use, a longer cycle of disadvantage is that synthetic products were difficult to control the stability of the lot. How heat treatment and processing into powder, the process to prevent oxidation of bivalent iron is the synthesis of critical control points. There are many R & D team has developed the carbon thermal reduction method, co-precipitation, hydrothermal method, the method of spray pyrolysis.

At present the international community can create businesses lithium iron phosphate Valencia, A123, Phostech well. Lithium iron phosphate ongoing development of industrial enterprises are also many. According to the Internet survey, 80% of domestic cathode materials for well known suppliers of lithium batteries of foreign claims that its lithium iron phosphate during development and production of related products. And the “international professional players’ contrast, investment in R & D intensity and time point of view, is still in its infancy.

Compared to other lithium apple MacBook 13 inch battery material, lithium iron phosphate is still very young. Some people say that the battery used in power tools, it has been said that it would apply to electric bus batteries, the initial opening is the need to be encouraged.

Japan in the field of lithium-ion battery has a monopoly, Sony, Sanyo Electric, Matsushita Battery, NEC and other famous companies have built large-scale lithium-ion battery range of production, but most manufacturers also maintain and expand production of the original mark, all use their own advantages to develop lithium-ion battery of new products. Japanese New Sunshine Program in 1992 to start lithium battery-development plans of ion battery R & D funds invested over one billion U.S. dollars, access to technology and technological breakthroughs. Toyota has recently begun mass production of lithium-ion rechargeable battery, in February 2003 for the announcement of a small car “Vitz” model, the stability to withstand the test of market. Hitachi, NEC, Mitsubishi and other companies producing lithium-ion batteries used in electric vehicles and hybrid electric vehicles Bulk, Fuji Heavy Industries, Tokyo Electric Power Design for the introduction of the use of lithium manganese cathode materials for oxide-vehicle lithium-ion battery electric “R1e”, a fast charge mode, 15 minutes can be filled to 80% of the price may move around a sub-80km. Maximum speed of 100km / h. Tokyo Electric Power in 2006, then in 30 years R1e. In addition, since 2007 to import a total of about 3000. Overall, Japan remains the main country of battery technology to power its supply batteries and their mass production of key materials technology has matured, the performance was almost meet the demand for electric vehicles.