Archive for February, 2009

To avoid the battery charging power supply circuit with the PWM

Friday, February 27th, 2009
laptop battery  charger microprocessor controlled base-band, if the microprocessor to stop running off rechargeable batteries may cause, damage to the battery. In the charging circuit, if latch-up when the base-band processor and toshiba battery  charging power supply is still connected, it may have been caused by rechargeable batteries, damage batteries toshiba PA3383U-1BRS ,toshiba PA3384U-1BRS  . To address this problem need to add a monitor circuit, the PWM input signal to conduct surveillance. If the stipulated period of time not detected PWM input signal, then cut off the power supply and battery connections. In order to ensure the reliability of the circuit, the protection circuit should be independent, free from the constraints microprocessor, when the PWM signal to restore the protection circuit can re-open the charging process.
The use of MAX6321-HPUK30-CY watchdog functions with power-on reset circuit (IC1) surveillance PWM signal to control the MAX4514-CUK SPST analog switches (IC2) of the on-off to ensure that disappear when the PWM signal (the microprocessor to stop running ) disconnect power supply and battery charger connection. In R4, D2 and C1 for the protection of IC1 and IC2, the adapter voltage to avoid excessive damage caused by the chip. Because of the additional circuit low quiescent current (30μA), R4 is not strictly the selection, as long as the guarantee of the inflection point Zener diode current (0.5mA) can. When the charger power supply disconnected, the protection circuit there is no supply voltage, and thus will not consume IBM battery  power.
MAX6321 chips used to monitor ThinkPad T43 battery PWM signal to control the security program

Are in fact in the anti-short-circuit the battery charging power supply and the basic circuit add IC1, IC2, when in the processor to stop working when the  ThinkPad T60 battery protection. Output ready for charging instructions, when the output high when the permit baseband microprocessor-controlled charger job, PWM drive control signals Q1 through Q2 (p-channel MOSFET) of on-off. The open-drain output structure allows it to connect to the same power or different power supply circuit. In this way, do not need to charge can be a watchdog circuit, PWM circuit at turn-off state.

  charger microprocessor controlled base-band, if the microprocessor to stop running off rechargeable batteries 40Y6797 , 40Y6799  may cause, damage to the battery. In the charging circuit, if latch-up when the base-band processor and battery charging power supply is still connected, it may have been caused by rechargeable batteries toshiba PA3285U-1BRS , toshiba PA3399U-1BRS  , damage batteries. To address this problem need to add a monitor circuit, the PWM input signal to conduct surveillance. If the stipulated period of time not detected PWM input signal, then cut off the power supply and battery connections. In order to ensure the reliability of the circuit, the protection circuit should be independent, free from the constraints microprocessor, when the PWM signal to restore the protection circuit can re-open the charging process.
The use of MAX6321-HPUK30-CY watchdog functions with power-on reset circuit (IC1) surveillance PWM signal to control the MAX4514-CUK SPST analog switches (IC2) of the on-off to ensure that disappear when the PWM signal (the microprocessor to stop running ) disconnect power supply and battery charger connection. In R4, D2 and C1 for the protection of IC1 and IC2, the adapter voltage to avoid excessive damage caused by the chip. Because of the additional circuit low quiescent current (30μA), R4 is not strictly the selection, as long as the guarantee of the inflection point Zener diode current (0.5mA) can. When the charger power supply disconnected, the protection circuit there is no supply voltage, and thus will not consume battery power.
MAX6321 chips used to monitor battery PWM signal to control the security program

Are in fact in the anti-short-circuit the battery charging power supply and the basic circuit add IC1, IC2, when in the processor to stop working when the battery protection. Output ready for charging instructions, when the output high when the permit baseband microprocessor-controlled charger job, PWM drive control signals Q1 through Q2 (p-channel MOSFET) of on-off. The open-drain output structure allows it to connect to the same power or different power supply circuit. In this way, do not need to charge can be a watchdog circuit, PWM circuit at turn-off state.

  charger microprocessor controlled base-band, if the microprocessor to stop running off rechargeable batteries may cause, damage to the battery. In the charging circuit, if latch-up when the base-band processor and Compaq battery   charging power supply is still connected, it may have been caused by rechargeable batteries, damage batteries. To address this problem need to add a monitor circuit, the PWM input signal to conduct surveillance. If the stipulated period of time not detected PWM input signal, then cut off the power supply and  Compaq Evo N610C battery connections. In order to ensure the reliability of the circuit, the protection circuit should be independent, free from the constraints microprocessor, when the PWM signal to restore the protection circuit can re-open the charging process.
The use of MAX6321-HPUK30-CY watchdog functions with power-on reset circuit (IC1) surveillance PWM signal to control the MAX4514-CUK SPST analog switches (IC2) of the on-off to ensure that disappear when the PWM signal (the microprocessor to stop running ) disconnect power supply and Compaq Presario 1200  battery charger connection. In R4, D2 and C1 for the protection of IC1 and IC2, the adapter voltage to avoid excessive damage caused by the chip. Because of the additional circuit low quiescent current (30μA), R4 is not strictly the selection, as long as the guarantee of the inflection point Zener diode current (0.5mA) can. When the charger power supply disconnected, the protection circuit there is no supply voltage, and thus will not consume battery power.
MAX6321 chips used to monitor battery PWM signal to control the security program

Are in fact in the anti-short-circuit the battery charging power supply and the basic circuit add IC1, IC2, when in the processor to stop working when the Compaq Armada E500 battery protection. Output ready for charging instructions, when the output high when the permit baseband microprocessor-controlled charger job, PWM drive control signals Q1 through Q2 (p-channel MOSFET) of on-off. The open-drain output structure allows it to connect to the same power or different power supply circuit. In this way, do not need to charge can be a watchdog circuit, PWM circuit at turn-off state.

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Thin-film solar cells: Order, G-watt with the growth rate

Monday, February 23rd, 2009

Applied Materials as the first glass substrate SunFab5.7m2 super thin-film components turnkey production lines into production laptop battery   in 2008 for the thin-film solar cells is a meaningful year. Several companies already have begun to adopt the technology for the production of thin-film battery, the most notable among BestSolar (BES Germany), in March the company invested 1.9 billion U.S. dollars to buy SunFab production line.

May 2008, MasdarPV subsequently ordered with Applied Materials SunFab two production lines. The initial investment is 600 million U.S. dollars, Erfurt, Germany, and set up two AbuDhabi battery production lines hp battery , F4809A , F4812A . The company also disclosed it will be in China, Mexico and Bulgaria plan to set up production plants in order to enhance production capacity. Thus, by 2015 its total production capacity will reach 1GW.

FirstSolar also in 2008, announced early in 2009 will reach 1GW capacity goals circuit diagram. This ambitious plan required its production Sony battery , VGP-BPS3 , VGP-BPS5 capacity in Malaysia to start all four production lines and full load, and the company recently announced plant in Malaysia is close to 75 cents W manufacturing costs, for the company it appears to be a pretty good score.

STANGLSemiconductorEquipmentAG once because of its reel to reel 8 Units wet chemical coating equipment sold to AscentSolar and concern. Ascent of these devices for a new factory for mass production, manufacture of flexible CIGS thin-film battery products toshiba battery , toshiba PA3383U-1BRS  for the future development of thin-film battery has injected new vitality.

Last year, China Taiwan thin-film battery industry also has been considerable development, major equipment suppliers such as Applied Materials,ou ruikang Oerlikon, Mediatek Ulvac love in this a lot of market share, but also the focus of this into the corporate market . Taiwan thin-film battery IBM battery manufacturers to develop very rapidly in 2010 the production of thin-film battery production capacity of photovoltaic cells to achieve more than half of capacity.

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Lithium-ion batteries(b)

Tuesday, February 17th, 2009

Lithium-ion battery security features

Lithium-ion dell laptop battery has been very widely used in people’s daily lives, so it should definitely be the safety performance of lithium-ion batteries are the first assessment indicators. For lithium-ion battery safety performance assessment indicators, the international community provides for very strict standards, a qualified Li-ion batteries in the safety performance should meet the following conditions.

(1) Short Circuit: No fire, not explosion

(2) Overcharge: No fire, not explosion

(3) hot box test: no fire, not explosion (150 ℃ thermostat 10min)

(4) needle puncture: No explosion (Ф3mm nail penetration with batteries)

(5) the impact of flat-panel: no fire, not explosion (10kg weights since 1M height batteries)

(6) burning: No explosion (gas flame barbecue batteries)

Lithium-ion latitude d510 battery safety features are how to achieve the?

Lithium-ion batteries in order to ensure safe and reliable use, the experts had a very strict and careful design of the battery safety in order to achieve security assessment battery indicator.

(1) divide 135 ℃ Automatic shutdown protection

Adopting international advanced Celgard2300PE-PP-PE three-tier composite membrane. The battery temperature reached 120 ℃, the composite membrane on both sides of the PE film hole closed, the battery internal resistance increases, the battery internal temperature down, the battery temperature reached 135 ℃, when, PP film hole closed, the battery internal circuit, the battery is no longer warming, to ensure safe and reliable latitude d520 battery.

(2) add to the electric fluid additives

Overcharge the battery, the battery voltage higher than 4.2V under the conditions of electric and electro-hydraulic fluid additives in other polymeric material, the battery internal resistance of mates increased, the formation of large area internal battery circuit, the battery is no longer warming.

(3) the battery cover composite structure

The battery cover the use of explosion-proof structure notch, battery temperature, the battery internal activation generated by the process part of the gas expansion, the battery internal pressure increased, the pressure reaches a certain degree of notch rupture deflated.

(4) a variety of environmental abuse trial

For the misuse of tests, such as external short circuit, overcharge, acupuncture, flat shock, burning and so on, examining the safety performance of the battery. At the same time, the battery temperature shock test and vibration, drops, shocks and other mechanical properties test, inspect the battery in the actual use of environmental performance under the circumstances.

Lithium-ion latitude d600 battery are a new type of green environmental protection battery

“Care for the environment, the protection of the Earth” is our bounden duty of every individual. How the U.S. environmental philosophy reflected in the action then?

As a battery consumers should buy, the use of new green battery; as the battery manufacturers should be the production of new green battery. Only through the concerted efforts of everyone to create, protect our natural beauty and harmony.

New type of battery is the green environmental protection in recent years have been put into use or are being developed for a class of high-performance, non-polluting batteries. Has been substantial use of lithium-ion batteries, nickel metal hydride batteries and are promoting the use of mercury-free alkaline manganese dioxide batteries are being developed, as well as lithium or lithium ion plastic batteries, fuel cells, electrochemical energy storage supercapacitor are new green areas of the dell 312-0068. In addition, the current has been widely applied to the use of solar photovoltaic conversion of solar cells (also known as photovoltaic power generation), also fall into this category.

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