HP Laptop Battery Super Blog Here

In comparison with other secondary batteries, lithium-ion batteries with excellent performance are widely used in mobile phones, laptops and other electronic products. The use of the process, noting what is important is perhaps our greatest concern. To this end, we must listen to the opinions of experts and suppliers.

Laptop Battery Conservation Strategy

Many people use laptops were used for piloting an external power supply, but such use would damage the battery or even unusable. The reason is connected to the area after the laptop battery will be automatically debited, which is actually equivalent to a daily part of the battery charge and discharge, thereby affecting the battery life. I often use the power of work when you remove the battery.

If the long-term use of external power, the use of 1 week (up to 1 month) should be a full charge and discharge, so that can repair the control system of the battery (register) Lane n ‘ was not in use, but may charge a nominal capacity of control and consistent fact throughout the charge and complete discharge to calibrate the battery chips. This is preferable to make the battery removed.

Founder of mobile technology products development, product engineers, Cao-ping said that after repeated load, the discharge capacity of lithium-ion batteries will decrease, the decrease of battery capacity in the degree is directly proportional the number of loading and unloading.

Newly built lithium-ion battery, only charge about 50% of capacity, the new laptop batteries as well. Used for the first time that I need to put the power to do, then an external power supply is fully charged, but the first charge preferably exceed 15 hours. Secondly, we had to wait three rechargeable battery is worn out, charging time to over 12 hours.

Many providers, such as the Founder of the laptop power supply circuits and the battery itself, are designed to load and unload circuit monitoring and protection, battery power will be monitored through the surveillance system , consumption below the value set, the device will issue a warning, then May be to charge the battery.

CAO Guo-Ping said that not long term use of batteries in stock before they must be charged or discharged battery to about 40%, then placed in 15 to 25 degrees Celsius dry preservation interval of 3 months to remove the checkmark from the battery to prevent battery discharge too bad. In addition, under normal circumstances, the battery is full, the system will automatically cut the load circuit, seeing the machine to move the eradication of brilliant. If the VGP-BPS8A battery-charging, the battery temperature will increase, so that excess energy, gas internal decomposition of the electrolyte, causing the battery internal pressure increases the risk of spontaneous ignition produce or rupture. Therefore, Founder Technology has been to recall the client, laptop battery must be charged on the original machine, to prohibit the use of third party shipper or other models of laptop charging, in order to avoid unnecessary risks.

Battery for joining the same direction that development is always environmentally friendly, safe, lightweight, and the same amount of space for greater storage capacity. On current trends, the laptop battery is still the main application of lithium-ion VGP-BPS8A battery, fuel cell is most likely to replace current lithium batteries, but the status of ongoing development, may also need several years of ‘efforts and solar cells on the more environmentally friendly, but because it is the output voltage and power are too small, such as application backlog will have to wait before the next breakthrough technology widely used.

Samsung Mobile-related person in charge, said: impact of the life of lithium is an important factor in the number of loading and unloading. Therefore, if the batteries used frequently, the time the battery will decrease quickly. In daily use by the process, pay attention to, without the battery when it would be better off, while minimizing the number of battery charge and discharge in order to ensure that long-term battery, a effective use. High current battery charge as long as does not exceed the rated voltage, the impact is minimal. Samsung quick charging technology is portable VGP-BPS8B battery as possible within the limits allowed by the growing tension, the pricing, if time is short compared to other brands of computers advantage of charging time is obvious. The depth of discharge is usually used when time does not use the battery is good, if not the depth of discharge will affect the frequency of battery life. If the short-term need to maintain 50% of electricity better.

Although the Li-ion battery memory effect is not obvious, but not always operate to food after the proposed charging, the battery is fully charged, after a laptop generally has a detection circuit automatically stops load, it is generally little impact. It should be noted when used frequently or not to charge and discharge the battery, once used, a full investigation, the lowest frequency of use, battery life longer. The direction of future development of the main battery is a high cohesive energy, high-capacity portable. Samsung is also developing a variety of concepts VGP-BPS9 battery products, particularly fuel cells developed quickly, hoping in the near future may be applied to laptops from Samsung to offer users a better experience and more practice.

To reduce the hardening of the battery to extend battery life, we must first improve the working conditions of electric bicycles. Reduction of body weight, getting rid of unnecessary decoration pieces, the appropriate speed limits, does not weigh very long when you do not use electric bikes to add to the burden is better able to recharge after each discharge and not under-voltage protection and to guard against VGP-BPS8B battery over-discharge protection for a minimum of 24 V rated voltage must be located at 21.5V ~ 22V, 36V nominal protection to a minimum voltage must be selected 32.5V ± 0 , 5 V for a nominal 48V to be located at 44V ~ 45V. The tension on the renewal of such a line capacity is only reduced by less than 2 km, but it may actually prolong the life of the battery. Every three months on a regular basis and not the professional maintenance of cells in repair and recovery in time. The method is simple, the economic cost is very low, but there is some difficulty in complying strictly. Thus, you can use specialized equipment for maintenance of desulfurization, these methods are:

1. The use of office equipment desulphurization fast

Desktop rapid desulfurization devices works is a high voltage, high pulse load current through the elimination of a negative amount of sulphide block wear. This method is fast, fast, get a temporary suppression of the effect of the treatment, but the high voltage high current can blow desulfurization may also reflect the active substances, including the elimination of lead sulfide in the positive plate to severe dehydration and softening problems, fatal damage to the VGP-BPS8A battery through the equipment in more than two sulfur base will be discarded after the battery. In addition, the current point for an addition to the professional maintenance of the basic fee of sulfur in 60 to 80 hours, up to six months, the life of the battery and is not the User substantial economic benefits. Currently, the battery on the market to maintain professional traders must understand the dangers of this approach. As a result, became the desulphurisation equipment discharge pulse, in effect, a fundamental principle has not changed is only the constant current in high voltage transients Hengda peak pressure, or will it damage the electrode active material, used friends of these products must be very clear on this point.

2. Options for desulfurization Chargers

In addition to battery charger sulfur is currently available in three works, one of which is similar to office equipment desulphurization fast mode of operation, using high voltage high current pulse load, blocking the desulfurization wear negative above indicated that this method of battery life would be a mortal wound, was refused by the market. The second is used fast pulse edge of the charge and discharge pulses, the use of peak instantaneous interfering with the collection process of vulcanization of the battery. The other is cyclical, with 10% to 20% over-charging method, to restore the battery to lead sulfate crystals. Both chargers can be added when the sulfur in the feed, but it will result in less load, or overload, but also ignored the procedure for discharge of the  VGP-BPS8 battery is the fact that most process drying, if the result is not satisfactory, the majority of users The charger is equipped with electric cars would leave after such a duplication of investment in desulphurization methods.

3. Use the online lead-acid battery extended life support

On the online extension of life support-type lead-acid batteries and battery in parallel, can be 24 hours to prevent and eliminate sulphides. This method is slower restoration, repair time is quite long, often more than 120 hours, but both charges discharge process is also capable of preventing and eliminating the healing, repair works. Because low voltage and low voltage, prolonged life support does not exert a strong impact on the battery plates which leads to dehydration and mitigation, which is a user input can be validated at the track maintenance , especially for the quality of the new battery can extend the battery life of 2 to 5 times, and entry may be accompanied by an electric motor, the next time to replace the battery, extending the life support can also continue to be used for users to save considerable economic costs. If a user once a year to replace the battery, a battery 280, the user 10, spent 2800 yuan should replace the battery on the conservative calculation, if you use extended life support twice the length of battery life of 10 years, can also save about half of the battery is charging.

To adopt this approach very significant. Firstly, the user has brought tangible economic benefits, reducing the user of trouble. Second, it enhances the reputation of the warehouse, provided that the conditions for expansion of production. Thirdly, to solve the battery electric vehicle warranty dealer is very hard to reduce complaints, improve credibility and increase the point advantage at the same time, in-store sales also increased to promote programs of commercial marketing. Fourthly, we can greatly reduce the demands of the VGP-BPS13/S battery manufacturer for the reasons. Fifth, improve the image of electric bikes, electric bikes to expand the overall market development. Sixth, improving battery usage, there are environmental.

1. INTRODUCTION

Battery electric vehicle is a key driver of production units in lead acid batteries, nickel-cadmium batteries, nickel-hydride batteries, metal, lithium batteries and fuel cells are more commonly used batteries because the high energy that large, light weight, good temperature characteristics, low pollution memory effect is not obvious characteristics such as nickel-metal hydride batteries used in electric vehicles are common. However, due to poor loading method, resulting in the life of the Laptop battery pack is well below the stipulated life. It’s much the battery is not bad but is filled with bad, good or bad for the battery charger can be seen a great impact on life expectancy. For this reason, this paper presents a three-stage program load control using smart charger design can actually improve the pricing efficiency and prolong battery life.

2. Control method developed

Methods of charge termination control are commonly used: a method of controlling timing, method of control voltage, the current method of control and integrated control laws.

Timing Control Act refers to the timing system to control the charging time, time has no value when they arrive on the Dell Inspiron E1705 battery to stop. Do not load. Commonly used in the law of voltage control, including the highest voltage (Vmax), the incremental negative voltage method (△ V), zero voltage increment method (0 △ V) commonly used in law to control temperature, including the method of maximum temperature (Tmax), method of filling temperature (△ T). Percentage change in temperature (T △ / △ t), the method at low temperature (Tmin). Integrated control method is the use of combined methods of controlling the above-mentioned in several control methods.

Compared with traditional fixed voltage and constant current charging method of three theories fees can greatly improve the efficiency of the battery. Three stages of indictment charging the first constant current and constant tension, the final adoption of floating Chong Chongdian. If the battery pack in deep discharge state of the former are still borne by the preload.

3. System hardware structure

3.1 Design comprehensive material

Subject to the nickel-metal hydride rechargeable VGP-BPS2C batteries, using the method of voltage and current feedback to achieve constant current, constant voltage goals, while the charge in the testing process and control parameters.

The program switching power supply maximum output of 2.4kW, AC input range of 1 76V-264V, charger circuit comprises essentially the main circuit and the circuit load auxiliary control of two parts, the whole process of operation of the circuit: 220V single phase power supply across the bridge.

Rectifier is filtered by the capacitor to move about 300V DC, after a composition by the four-bridge IGBT inverter with high frequency alternating current through the high frequency transformer coupled to the secondary side, and then through the rectifier D1 , rectifier D2 and finally by the inductor L 2 and capacitor C8 filtered to provide a stable DC. Following three tasks at each stage of the charging voltage and load current are different. Thus, as the charging process using the ATMEGA8 MCU control equipment, rechargeable batteries, charging SCM detect the load current, charging voltage, the battery temperature to prevent the circuit from overvoltage and overcurrent, the battery temperature is too high, you can also detect the battery voltage and current values to determine if the transition to the next stage of a fee. Now, every step of the SCM is given the value of the charging voltage or current value, and the corresponding sample obtained from the voltage and current through the UCC3895 phase-shifted PWM control chip to change the value to change the power tubes on time, to achieve at different stages of a stable output value of different purposes.

3.2 describes the circuit pressure maintenance

Main circuit charging circuit full bridge inverter. IGBT H-bridge with four components T1 T3 tube Q4 Q2, Ql and Q4 formed ahead of the bridge arm to achieve zero voltage turn on and off, Q2 and Q3 GAL composed Arm Bridge to zero-current turn on and off. Labor and Q2 of the inverse of the driving voltage, Q 3 and Q 4 of the control voltage is also the inverse, Q 1 and Q 2 and Q 3 and Q 4 to turn the switching dead time can be is in phase transfer controller UCC389S controlled by adjusting the mobile phase T4 ahead of the bridge arm to adjust the conduction time common to adjust the duty cycle to achieve the goal of changing the output hp F2024A battery power. Q2 and Q3 GAL consist of the theory of arms control and the bridge ahead of the same bridge arm.