There are several types of cell phone batteries

The emergence of mobile phone regardless of location constraints humanity no longer can send information anytime, anywhere. The development of mobile phone depends on the expansion of its cellular accessory development and battery functions. Mobile phone batteries commonly used are: nickel-cadmium batteries, nickel metal hydride batteries and lithium ion batteries.
M1330 battery

Nickel-cadmium batteries: composed by two plates, one is made of nickel, cadmium and the other is doing, these two metals reversible reaction in the battery, so the battery can be recharged. Its biggest feature is the strong, long talk time.

Nickel metal hydride batteries: nickel-metal hydride batteries have another name called environmentally friendly batteries, because it does not contain cadmium metal, it does not pollute the environment. Its power reserves than nickel-cadmium batteries more than 30% to 50%, mobile phone talk time is thereby extended by 30%.

Lithium-ion batteries: a high energy density batteries, it is compared with the same size nickel-cadmium batteries, nickel metal hydride batteries, power reserve bigger, lighter weight. Lithium-ion batteries is an intelligent battery, which can be a dedicated smart charger "talk" to achieve the shortest possible charging time and maximum life cycle and maximum capacity. Because it has intelligence, it is also very picky, in a non-dedicated chargers, lithium-ion battery power alone may not be sufficient or not reach the maximum life cycle.dv2500 Battery


1, the need to protect the circuit:

Lithium-ion rechargeable battery if the charge or discharge occurred, often there will be cell expansion, leakage and other abnormal phenomena, protection circuit prevents the device itself or the charger is faulty, or improper use, damage and deterioration of battery performance and settings . Under normal conditions, the protection circuit is not working.

2, the protection circuit installation location:

Protection circuit with a single battery and battery plate fused, even if the charger or failure of the machine itself, the protection circuit can prevent cell damage, leakage characteristics deteriorated role. These protection circuits must be installed in the panels by a professional company for different battery design circuit.

3, to avoid damage protection circuit:

Avoid using the battery in strong electrostatic place, such as certain laboratory near precision instruments, open at the thunderstorm, and so on.

4, safe rechargeable battery temperature range:

Battery preferably between 0-45 degrees Celsius charging to keep the best and most secure state of charge, or easy to damage the protection circuit, life reduced battery performance. For example parked in the hot sun in a car, a battery that is not suitable for placement therein.Mini 1000 battery


The remaining few cells use lithium rechargeable better?

Some people used every night to charge the battery on the charger, or plug in each day trip to enrich my knowledge, in fact, this action will consume battery life!

The battery should be leaving a better grid recharging! Because the lithium battery charge and discharge about 500 times the life, the life of the frequency of recharging is certain, so usually have to wait only one cell when the battery is exhausted, and then charging job, to be able to reduce the number of charging, the battery life It will be longer!

How self-examination whether the defective lithium battery and charger?

■ Lithium

Too light lithium battery cell capacity is inadequate means, in general, if marked 900mAh lithium battery weight less than 30g, it means Fengyun battery may have a problem! All brands 池心 900mAh weight of approximately 30g, if the battery cell + other built-in equipment + battery case less than 30g, then this "lithium batteries" in all likelihood be false.

■ Charger

Only two pin-cradle is unrecognized lithium lemons, there are three or four feet of the pin is able to automatically identify lithium batteries nickel battery charger (2 3 or 4 consumers may be discerned appearance But there are three or four feet pin is also possible in which 1 or 2 are no actual function of camouflage).PA3534U-1BAS


■ lithium battery and charger

In Nokia battery, for example, when the battery voltage saturation circuit board will be automatically reduced by the 4.2V 3.7V, when you plug in the phone load, it automatically jumps back to saturation operating voltage of 4.2V, so can protect the battery and cell phone growth life. Self with "multimeter" Check 1,4 feet, to confirm whether the saturation voltage of 4.2V, 4.1V and if less than normal and standby time is shorter, it may mean that your battery or charger has a problem.

What to buy lithium to pay attention

1. There is no clearly marked "capacity":

No clearly labeled capacity (such as 1000mAh or 1000 milliamp hour) battery, it is likely that the use of "bad battery" or "recycle" (second-hand dolly used abroad, smuggled and then with the new shell packaging); this Both cell phones are harmful, many on the market is flooded with cheap batteries, is the use of recycled batteries heart to do, the price is cheap, but "life is short", "quality is unstable" inadvertent use may damage your phone!

2. There is no guarantee that "standby time":

"Standby time" that is, until the next time charge of continuous use battery into the phone. Generally commercially available batteries are unable to guarantee customer waiting time, it is because the quality of the relationship between the battery unstable; many inexpensive battery of poor quality because it is using a dolly, so make it short between standby.

Some salesperson did not know the actual capacity of lithium batteries, just casually dictation, and he is incapable to quality control check, they wantonly up in market trafficking. The salesman can not guarantee "standby time", it means the battery can not be guaranteed not to use "bad battery" or "recycle"!

3. Whether the installation of "safety protection circuit board":

No "protection circuit board", the fear of lithium "deformation, leakage, explosion" # dangerous vicious price competition in, each seeking a lower price protection circuit board, or simply omit this device so the market Explosion hazard has on filled with a lithium battery. "Protection circuit" consumers can not identify from the appearance out of the business entirely to rely on dictation, you must choose a reputable business to buy.ASUS N61J battery

Precio coche eléctrico de la batería, es siempre el foco de preocupación para todos. Debido a que es una exageración decir que va a determinar el futuro de esta industria.
Aspire 1640Z batería

Sin embargo, aunque este tema ha sido ampliamente discutido en los aficionados a los coches eléctricos, pero no en la industria del automóvil es un secreto muy bien guardado. Hasta hace poco, analista de la industria rompió el silencio y dijo que debido a la mejora de la tecnología y las economías de escala, el costo de las baterías de coches eléctricos ha habido una disminución significativa, el nivel actual pudo haber caído a 25 dólares por kilovatio hora.eMachines E725 bateria


Wolf Gang Ba Earnhardt, Roland Berger Strategy Consultants, una pareja, dijo que el precio actual de las baterías de litio ha sido muy inferior a los niveles pronosticados previamente. Estudios anteriores han considerado unos bajos niveles tales precios en 22 años es poco probable que suceda antes de la.

Hemos llevado a cabo un cálculo de abajo hacia arriba, así como los precios de los productos de los fabricantes de equipos a hacer, y finalmente llegamos a el costo promedio es de $ 25 / kWh. Barnhart explicó que sería 215 años vamos a ver el nivel de precios de mercado. Por supuesto, este análisis se centra en el costo de la propia batería, pero no incluye un módulo de gestión de baterías, cables y demás costos de la carcasa.6830s batería


¿Por qué 215 años y comparar precios ahora? Barnhart explica, en muchas industrias de fabricación, los fabricantes tienen que prepararse de antemano para la nueva producción. 215 o posterioridad al contrato del proyecto, en 212 años para comenzar situación contractual no es infrecuente.

Además, Barnhart subrayó, vale la pena señalar que la producción mundial de 215 años de los vehículos eléctricos es mucho mayor que la producción de hoy. El aumento de la demanda reducirá significativamente el número de precios de las baterías.590543-001


Hoy en día, los fabricantes de automóviles están pagando cada vez menos costo para el paquete de baterías de iones de litio, pero uno se pregunta un pequeño problema: Estos se reducen los costos, cuando se refleje en el precio?

Sin embargo, el CEO de Ford, Alan Mulally, ha revelado recientemente el mensaje opuesto. Dijo que la producción de baterías de baja capacidad, 212 coste anual Ford Focus de vehículos eléctricos, entre los 522 kWh por dólar y $ 6. El coste de producción de los paquetes de baterías terminados aumentó alrededor de un veinte por ciento o más. Japón, China y Corea del Sur es el tercer mayor productor mundial de baterías de iones de litio, las baterías de iones de litio en 2010 la producción mundial de alrededor de 5 mil millones, China produjo 1,6 mil millones, que representan el 32%.
Japón, China y Corea del Sur es el tercer mayor productor mundial de baterías de iones de litio, las baterías de iones de litio en 2010 la producción mundial de alrededor de 5 mil millones, China produjo 1,6 mil millones, que representan el 32%. Sin embargo, una gran industria de las baterías de litio tales, pero se enfrentan a grandes disputas de patentes de material, que se ha convertido la cabeza colgando en la espada industria de las baterías de litio chino.

Desarrollo de litio y la dirección del impacto por el material
ThinkPad R61 batería

En los últimos años, la tecnología de la batería de litio ha madurado, de acuerdo con su elección del material del cátodo para dividir, principalmente óxido de manganeso y litio, materiales ternarios de fosfato de litio y hierro y tres tipos. Entre ellos, la batería de manganeso de litio tiene una alta estabilidad redox exotérmica, cortando ciclos de carga y de descarga después del punto 300 veces, la tasa de retención de capacidad sigue siendo más del 90%, de satisfacer plenamente el coche eléctrico para su uso en condiciones de alta y baja temperatura requisitos, es ideal para la dirección y el desarrollo de todo tipo de fuente de alimentación.

Según la investigación informe muestran los datos que el litio Ingeniería, el primer semestre de 2013, material del ánodo de la batería de litio de China, electrolito tamaño del mercado, separador y otros materiales fue de 68 mil millones de yuanes, un aumento del 13,3%. 2013 el tamaño del mercado anual de 14 mil millones de yuanes. Ingeniería de litio Industrial Research predice que para el año 2015, la batería de litio mercado de materiales de China alcanzará los 18,2 mil millones de yuanes.

La competencia puede afectar la producción de la industria de materiales de litioPA5024U-1BRS

As for battery memory effect how to avoid it? VGP-BPS13

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How to rechargeable batteries
Rechargeable Battery

A limited number of charge rechargeable batteries with charger. The market generally sell on the 5th, the 7th, but there on the 1st. Benefits of rechargeable batteries is economic, environmental, power enough for high-power, long-term use of electrical appliances (such as Walkman, electric toys, etc.). Charging the battery voltage is lower than the same type of disposable batteries, AA batteries (the 5th charging) is 1.2 volts, 9V rechargeable battery is actually 8.4 volts. Charging times can now generally around 1000. At present, only five categories: nickel-cadmium, nickel metal hydride, lithium ion, lead accumulator, lithium iron.
Steps / methods

Timing control
When using 1.25C charge rate, the battery 1h be sufficient; When using 2.5C charge rate, 30min be sufficient. Therefore, according to the capacity of the battery and the charging current, it is easy to determine the time required for charging. This control method is the most simple, but due to the initial state of charge of the battery is not exactly the same, and some lack of battery charge, and some battery overcharge, therefore, only the charge rate is less than 0.3C, it allows the use of this method.
Voltage Control
In the voltage control method, the most likely to be detected is the highest voltage of the battery. Voltage control law is used:
The maximum voltage from the charging characteristic curve can be seen, when the battery voltage reaches the maximum value, i.e. the battery is fully charged. During charging, when the battery voltage reaches a predetermined value, should immediately stop fast charging. The disadvantage of this control method is: the highest voltage battery is fully charged with the ambient temperature, the charging rate change, and the maximum charge voltage of each cell there are differences in the battery pack, so this method can not be very accurately determine the battery has enough charge.
Negative delta voltage increment due to the negative battery voltage and the voltage of the battery pack is absolutely nothing to do, but also affected by environmental factors such as temperature and charge rate, so you can more accurately determine the battery is fully charged. The disadvantage of this control method is: the battery voltage negative increment, the battery has been charged, so the higher temperature of the battery. Also after the nickel-metal hydride battery is fully charged, the battery voltage to go through a long time before a negative increment, the overcharge is more serious. Therefore, this control method is mainly used in nickel-cadmium batteries.
Voltage zero incremental NiMH battery charger in order to avoid negative voltage increments wait for too long and damage the battery, usually 0ΔV Control Act. The disadvantage of this approach is: fully charged before the battery voltage may vary within a certain period of time is small, resulting in a premature stop rapid charging. For this reason, most nickel-metal hydride batteries are used highly sensitive detection of fast charger when the battery voltage drops slightly, immediately stop fast charging.Laptop Akku and laptop batteries news online

Temperature Control
To avoid damage to the battery, the battery temperature is too low can not start fast charging, the battery temperature rises to a predetermined value, you must immediately stop fast charging. Temperature control methods are commonly used:
The maximum temperature during charging, typically when the battery temperature reaches 45 ℃, should immediately stop fast charging. The battery temperature and the battery may be assembled together by a thermistor to detect. The disadvantage of this method is the long response time of the thermistor, the temperature detection with a certain lag, while the maximum operating temperature of the battery and the ambient temperature. When the ambient temperature is too low, after fully charged, the battery temperature does not reach 45 ℃.HSTNN-IB34
HSTNN-IB34
PA3536U-1BRS
E6400 akku

In order to eliminate the environmental impact of temperature, temperature control method can be used. When the battery's temperature reaches a predetermined value, immediately stop fast charging. In order to achieve temperature control, the thermistor must be two, respectively, to detect the battery temperature and the ambient temperature.
Temperature change rate of nickel metal hydride and nickel-cadmium battery is fully charged, the battery temperature is rising rapidly, and the rate of rise ΔT / Δt basically the same, when the battery temperature rises 1 ℃ per minute, shall immediately terminate fast charging, this charging control method, in recent years, come to be widely used. It should be noted, due to the temperature dependence of the resistance of the thermistor is not linear, and therefore, in order to improve the detection accuracy of the thermistor should try to reduce the impact of nonlinearity.
The lowest temperature when the battery temperature is below 10 ℃, the use of high-current fast charging, it will affect battery life. In this case, the charger should automatically transferred to trickle charge until the battery temperature rises to 10 ℃, and then transferred to fast charging.
Integrated control
These various control methods have advantages and disadvantages. In order to ensure that in any case, be able to accurately control the battery charging * state, the current fast charger usually include timing control, voltage control and temperature control integrated control method.

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