HP Laptop Battery Super Blog Here

1, the preparatory work

AR with pure water and a solution of sulfuric acid, electrolyte configuration, proportion, 500ml water, add 0.5 ml of pure sulfuric acid.

Prepare a standard rubber valve in the exhaust.

Tools: screwdriver, straw (which can be used instead of disposable needles), clear diameter polyethylene pipe should be suitable for straw (needles) inlet. ABS plastic.

2 along the top of the vent forced the battery. Some of the Laptop battery cover is a glue ABS, a number of cells is connected by a loop. Note that forced open the lid when not to damage the lid. So you can see 6 Cape exhaust valve rubber.

3 Open the rubber cap, exposed escape through the chimney can be seen inside the battery. Some battery rotary exhaust valve is open, as the days may be the battery is the case. Some cells there is elastic around the filler cap and pay attention to ensure the stuffing.

4, with good drops inhalation prepared by a row of holes in the electrolyte electrolyte. Electrolyte to cover only the plate of 1mm.

5, the electrolyte filling the battery cover with breathable material proper ventilation category covered to prevent dust from falling into the wind, still 24 hours to observe the interior of the vent electrolyte there should be flow of electrolyte, or if you want to add electrolytic fluid.

6, the wind does not qualify for the smallest to the nominal 12V to 16.2V Dell Latitude D505 battery voltage constant current limit. The battery is best placed in acid-resistant containers to prevent spillage of the electrolyte environment. The load current of the battery has dropped to 400mA ~ 300mA or voltage 16.2V 3 hours after the initial charge that the battery is full.

7, after the end of the initial charge, check the surface of the electrolyte of the battery, if, without electrolyte, the electrolyte should be added later, again limiting constant tension, if there are six cells inside the electrolyte with straw to suck the excess electrolyte.

8, using current limiting constant voltage 14.8V until the charge current dropped to 300mA.

9, Re Cover install exhaust valve exhaust valve later, attention to resume stuffing. If the exhaust valve is opened in rubber, it is better to replace them, if the characteristics of a good may or may not change, but be sure to check the flexibility, if flexibility is not good, we must find a good exhaust valve replacement.

10, cover the hp F3172A battery cover, if the bonding time and bonding should. Yet another 24 hours until completely solidified gel, which further limits 14.8V constant voltage until the charging current dropped to 300mA.

11, once again test the capacity of the battery, the battery capacity to determine whether to reinstate him.

Maintaining good battery (capacity increased by less, or who do not meet the nameplate capacity of more than 70%) reasons:

1, positive plate battery to soften its remarkable performance: In the 7 steps above, you will find suck the electrolyte impurities than black, if the impurities are more black then, softening is discharged positive plate, so that the battery base can not fix can not be discarded.

2, vulcanization, the battery, the restoration project of the batteries after the pulse, once again the burden.

3 load after 30 minutes, test the battery voltage, but lower than 12V, the circuit may be internal battery. The battery must be discarded.

Chargers – leaf green, essential

The quality is good or bad life toshiba PA3285U-1BRS battery charger is directly related to the length, and even some low quality charger will also lead to battery charging and deformation. So generally, the production of ordinary battery charger and battery manufacturers are supporting production. However, there is the quality of the magazine market is uneven, some manufacturers for the pursuit of profit and ignore the batteries and matching chargers, and consumers are also less costly for the love of a moment, the choice of charger is not enough scientific and rational. Therefore, the choice of shippers, we must pay attention to the choice of regular charger manufacturers, and manufacturers to do with the manufacturer of the battery charger online, so even if the failure, but also be able to find the appropriate vendor repairs or returned.

Motor controller – the backbone of electric cars to travel

According to some insiders, is the electric vehicle start-up engine and acceleration features such as the completion of the key, and the level of engine performance will lead directly to the life of batteries. The Promise controller that the speed of the vehicle electric power braking, soft start functions such as using “body” if the limit is unreasonable design is too large, may seriously affect the battery life engine. Thus, the purchase of electric vehicles, they need to go over a test drive, multi-feeling. Take a look at electric cars start, acceleration, fixed speed, braking, balance and other functions is consistent with the instructions.

Since the type of plate to create the conditions for use are different, eventually leading to failure of the battery for different reasons. In summary, failure of lead acid battery has the following situations:

1, positive plate corrosion variants

Is currently used in the production of alloys three categories: the traditional lead-antimony alloy, antimony 4% ~ 7% mass fraction, low or ultra-low-antimony alloy of antimony and antimony, of 2% mass fraction, less than 1% of the capacity fraction, containing tin, copper, cadmium, sulfur and other variants agent crystallization Pb-Ca-series, Real-Pb – Ca – Sn – Al quaternary alloy, the calcium content of 0.06% mass fraction of ~ 0.1%. The distribution of the alloy positive grid plates in the Laptop battery charging process will be oxidized to sulfuric acid in lead and lead dioxide, leading to loss of support for the role of active substances Ershi battery failure, or due to corrosion of the layer of lead dioxide was formed, so that lead alloys to produce stress, so grow grid deformation, the deformation of more than 4% of the entire plate was destroyed, material active network connection is bad and fall, or the bus short-circuit.

2, the positive plate active material shedding, softening

In addition to grid active material shedding due to growth and, with the repeated charge and discharge, particulate lead dioxide are a combination of relaxation, relaxing, falling down the grid. Grid manufacturing and assembly conditions discharge elastic load, a series of factors, all of the positive plate active material softening and make an impact.

3, irreversible sulfation

Excessive Dell Inspiron B130 battery discharge and long-term storage in the discharged state, the anode form a hard, thick to accept the burden of crystals of lead sulfate, this phenomenon is known as irreversible sulphation. Axis irreversible sulphation, they can always use a method of placing seriously, then the failure of the electrodes, can be recharged in electricity.

4, the premature loss of capacity

When low-antimony or lead calcium alloy grid in the battery during the initial period (approximately 20 cycles) is the phenomenon of a sudden drop in capacity, so that the failure of the battery.

5, antimony in a serious accumulation of active substances

Antimony on the positive plate grid with the loop, partially transferred to the negative active material to the surface because of H + on the reduction of antimony than lead on the reduction potential of about ultra-low 200mV, then when the charging voltage in the accumulation of the Lower antimony most courses are used for the decomposition of water, hp 346970-001 battery charge and can be a normal failure. On the charging voltage is only 2.30V and failure of lead battery acid content negative active material of antimony had tested negative active material was found in the surface layer of antimony can go up 0.12% mass fraction of ~ 0.19%. For some cells, such as submarine batteries, hydrogen battery-liang has certain restrictions. Hydrogen has more than the standard battery electrode active material for negative tests, the amount of antimony average fraction reaches 0.4% by mass.

6, non-thermal

For batteries require less maintenance charging voltage does not exceed a single 2.4V cell. In actual use, for example, in the car, the device controller may be out of control, the charging voltage is too high, so that the load current is too large, the resulting heat will allow the temperature of the electrolyte of the battery, causing an internal resistance of the battery down, falling to new resistance increased charge current. The battery temperature and current is too large, mutually reinforcing and, finally, can be controlled so that the deformation of the IBM ThinkPad T43 battery, cracking and failure. Although the thermal runaway does not lead to failure modes of common acid batteries, but not uncommon. Used should charging voltage is too high, heat phenomena battery attention.

7, the anodic corrosion of bus

Under normal circumstances, the negative electrode grid and the bus there are no corrosion problems, but in VRLA, where the establishment of the oxygen cycle, the battery is essentially the upper space filled with oxygen, the number of new buses for the electrolyte membrane along the polar Ear mounted bus. Alloy bus will be oxidized to form lead sulphate and, if the bus electrode alloys bus inappropriate choice with slag inclusions and cracks, corrosion and will deepen the cracks, resulting in one ear and the very bus was torn and the negative plate failure.

8, the perforation of the diaphragm caused by a short circuit

Membrane of individual species, such as PP (polypropylene) membrane pore size larger, but also in the process of using PP fuse displacement will occur, causing large holes, active substances can pass through the loading process and unloading of large holes caused by micro-short circuits, so that the failure of the battery.

1, lithium-ion battery separator Overview

With lithium batteries with high energy density, long cycle life, light weight, small size and other characteristics, but also a reliable, safe and can quickly charge and discharge, etc., to become the new power technology in the recent years, the hot spot of research in the field of high power and high-energy folk reserved. In the structure of the lithium battery, the inner membrane is a key component of the. Diaphragm plastic film is able to isolate the Laptop battery positive and negative, to prevent short circuits; also be overheating of the battery, through closed-cell function to block cell in the current conduction.

Depending on the physical and chemical characteristics, the lithium battery separator materials ion can be divided into: film weaving, non-woven membrane (non woven), microporous membrane, and composite membrane, paper separator material various film categories. Polyolefin materials have excellent mechanical properties, chemical stability and relatively inexpensive, and therefore, polyethylene, polypropylene, microporous polyolefin membranes for lithium-ion batteries will be used as a research and early development of lithium – ion IBM ThinkPad T41 battery separator. Today, the marketing of lithium-ion battery separator is still microporous polyolefin membrane. In recent years, solid electrolytes and gel began to be used as a specific component, while playing the role of electrolyte and battery separator is a new technology.

Cost Li-Ion Battery Battery separator reflect the cost of a / 3. Membrane determines the performance of the interface structure of the battery resistance and so a direct impact on the battery capacity, the cycle efficiency, and safety features such as the membrane of high performance in the improvement of the overall performance of the battery has an important role. At present 60% to 70% of the market for membranes, especially in wet bi-oriented process, because the wet, bi-lateral vertical stretch more balanced. It is mainly used for the method of high-end diaphragm wet, dry, has been applied in the low range.

2, diaphragm production process

The current market-based lithium-ion Dell Inspiron 1420 battery separators are mainly made of polyethylene, polypropylene based polyolefin membrane, including the PE single layer, single layer PP, three-layer PP / PE / PP composite film. Polyolefin membrane current process of production under dry and wet divided into two categories, while dry process design can also be decomposed into one-way and two-way stretching process.

Dry-way stretching process is the production method of hard-elastic fibers were prepared by a low degree of crystallinity of highly oriented polypropylene or polyethylene film, high temperature annealing to achieve a high degree of crystallinity of film orientation. This film is stretched at low temperature, before the formation of mania and other defects of micro-enterprises, and then opened under high temperature so that the defects form a pore. This approach was first seen in USPatent3426754 Patent U.S. Celanse 1970 for the production of mono-layer membranes of porous polypropylene. The process after decades of development in the United States, Japan is already very mature, and now the U. S. Celgard Inc., Japan’s use of these boats UBE unique production PP, PE, and three PP / PE / PP composite film. This method of producing the BATBL50L6 porous membrane has an elongated structure, because it covered a stretch event, the horizontal force of diaphragm relatively poor, but it is not conducted due to the transverse tensile, transverse almost no shrinking heat.

Due to the protection of foreign patents and constraints of intellectual property, the domestic one-way membrane traction determined by industrialization progressed very slowly. China has already started in 2004 in this patent relates to technology and foreign patents difference is that in the polypropylene has a crystallization promoting effect of adding nucleating agents, and agent additive for oil has accelerated the rate crystallization during annealing. The technology is now used in Hangzhou, a production line, using a method how to stretch the production of PP single-layer diaphragm, has made this type of membrane on the market.

Wet-phase method of separation is also known as the separation of thermally induced phase, the high boiling small molecules as pore-forming added to polyolefins to merge into a uniform, then the cooling phase separation occurs The stretch after the ecprice extraction of organic solvents with small molecules can be interconnected prepared material of the microporous membrane, the material widely applicable. Adoption of the law, a company representative Asahi Kasei of Japan, Tonen and the United States Entek, currently used primarily for single-layer membranes of the PE. Wet bi-directed path to produce the membrane after a double meaning because of tensile strength of high vertical and horizontal. China Foshan Plastics Group was established in 2004, using a wet process production of two channels by membrane stretch production line PE by the end of 2005 has started selling products on the market.

3, the major international manufacturers diaphragm

Portable power tools, mobile phones, laptops, video camera lithium rechargeable ion batteries, power tools, small batteries used mainly polyolefin membrane, technology and markets are already very mature, the largest supplier of Asahi (Asahi Chemical Industry), U. S. Celgard and Tonen (Tonen Chemical), Asahi Kasei 5 in the main supply to the membrane over Sanyo, while the Celgard and MBI is a leading provider of BYD; With Sony, SDI, LGC and other clients, Tonen Chemical to become the world This membrane third largest supplier. The United States and produced three UBE Celgard polypropylene / / polyethylene polypropylene (PP / PE / PP) composite film. This type of material characteristics of the membrane is its higher resistance, lower cost, but also in the temperature of the internal hp 367759-001 battery is high, PE melt at 130 ℃ or so, when, while the high melting point of PP (150 ℃ or so) to form the obturator membrane, so that the battery internal circuitry, greatly improve the safety performance of the battery, but the complicated manufacturing process, and these are particularly difficult to achieve Ultra-thin 16um. Asahi Kasei, Tonen, the United States Companies ENTEK such that only the polyethylene (PE) membrane. This type of membrane material because it is single-PE, and therefore the cost of production but the production of ultra-thin membrane under specific conditions 16um, so popular with major battery manufacturers such as Sanyo, Sony, Panasonic, Maxell, etc. favor.

4, the internal status of development of membrane industry

With the development of lithium-ion battery industry, the market on the separator internal lithium battery lithium battery has gradually entered the ring, Xinxiang, Henan, China and the Sino-Kuwaiti Douglas.Ryan Technology, Foshan Jin Hui Hi-tech Taiwan and raised the money represented by the manufacturers internal lithium ion toshiba PA3421U-1BRS battery separator to grow rapidly in the years, the diaphragm, compared with imports of their products, the import price gap is just 1 / 3 ~ period from 1 / 2 mineral products is also relatively short, but the thickness of the inner membrane, the strength, the absorption hole can not be get the overall balance, and batch production volume is less stable, manufacturers of lithium battery internal chose the great majority of the imported membrane. Therefore, research and development costs, production process is simple, the adequate opening size, high porosity, mechanical strength to meet the requirements of the porous polymer separator to improve battery performance and reduce costs Battery has an important practical significance. How to further improve the membrane quality indicators is the battery industry in China is now pressing problems.

5. Lithium-ion battery development trends of separation

Battery separator is mainly the development of lithium-ion batteries with the changing needs and continue to grow, in terms of volume, lithium-ion batteries are moving in the small and large two distinct meanings. In some, such as mobile phones, digital cameras and other electronic products to meet the beautiful and simple formula to bring the application on the factory batteries apple A1060 battery was very low. In pursuit of high energy density, the small size of the electrode can accommodate more equipment, battery manufacturers are seeking to divide the thickness of the thinner, the better. Small cap is a challenge because of the need to make a thin membrane, but to be able to maintain the capacity of the original battery, the cycle efficiency, and safety features and more power, more design easy.

In contrast, electric bicycles, electric vehicles and power tools used by battery power, to achieve high capacity, high power, usually a battery needs to use dozens or even hundreds of batteries to the concatenation. Because lithium batteries have the danger of explosion, the safety diaphragm is important. Due to become increasingly large, technically demanding more efficient and reduce emissions of greenhouse gas emissions, higher power.