HP Laptop Battery Super Blog Here

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.

The annual sales income over 100 billion U.S. dollars, operates in all key areas of the computer industry, Hewlett-Packard, took first place in the PC market after the quality of their products they are often caught in the crisis of confidence in the brand, following the charts, screens, batteries, etc. took place after a dispute over the quality, the most recent case is that HP E9105t models desktops and improved hp 367759-001 battery version of the computer problem E9108t blue screen, which is currently abroad caused dissatisfaction of many users.

“Economic Daily News” reporter has learned that hundreds of overseas customers have been planned collective complaints and its improved version of the HP E9105t E9108t computer problems blue screen, which Hewlett-Packard of China public relations person in charge of enterprise PSG accept the “Daily Economic News” reporter, said that since the two desktop products are not available in China, so the issue has no impact on users china. However, according to “Economic Daily News” reporter has learned, in fact, even before this incident, HP “Blue Machine” was published in the Chinese hp Pavilion ZE2000 battery market.

It is remarkable that in recent years has been consumer complaints about product quality and in case of HP, and more incidents of overheating of the battery were treated reminder of HP, other users of computers in question were not the ideal treatment, which also allow the quality of HP after sales service widely disputed.

There are also Hewlett-Packard machines to blue screen”

According to Zhongguancun in Beijing, and outside on the streets of the computer channel will present the city from April 2007 onwards, due to “sudden Hewlett-Packard cut prices of all models, “then HP laptop sales in Beijing and the computer market in the country showed an eruption.” Zhongguancun channel Wang Jun (a pseudonym) Analysis: “HP is a great hp Pavilion dv4 battery brand, previously, price is always higher than other brands when the price low, people buy more naturally.”

However, the top of its price cuts come with HP sales eruption “lasted only a few months.

According to Wang Jun, the second half of 2008 to begin buying prices fell Series V3000, DV2000 Series, compaq6000 series models such as the use of laptop users there, where a variety of models V3000 series a “blue screen of frequent and automatic restart” issue.

June 2007 Hewlett-Packard model V3159 bought in Zhongguancun, laptops, said Mr. Ho, his notebook in early 2008 began to emerge from the blue screen phenomenon, from November 2008, began to frequent blue screens all the day there will be two three. He suspects the software blue screen may be caused by the conflict, if Ho reinstalls the system several times, but he told reporters he was trying to install a variety of operating systems, the two hp 338794-001 battery can not solve the problem blue screen.

Press investigation revealed that this phenomenon occurs not only in Beijing, Guangxi, laptop users HP V3000 presented by Mr. India, and V3000 is the beginning of last year in Nanning to buy Electronic Science and Technology Square, since the use of ordinary blue and death, he worked this get your own laptop service centers HP Care Pack requires an interview, but the other party asked for blue screen when the new portable-Na Qu interview, Mr. India and it is difficult for him to accept HP product of the attitude of consumers of services hp PB992A battery.

Wang told the “Daily Economic News” journalists, HP handheld products, sales decreased significantly in the second half of last year, “the time there was a big snow-screen events so much noise, much of ‘buyers were interested in the Hewlett-Packard in consultation with the change after the other brands, but in 2007 sold the shipment of high rates of repair, so we reduced the volume of HP in general take is someone takes on the basic non-prepared stock. ”

Bad motherboard problem? HP does not take

Mr. Ho and India revealed that in the face of the HP laptop blue screen problems, they have posted online with people to discuss and find solutions. “Most experts agree that this is not a software problem caused a blue screen, the problem probably lies in the motherboard of the machine.” They said.

Coincidentally, a few days ago by the blue screen problems abroad, Hewlett-Packard desktop users out of this under the same conclusion.

July 19 of this year, claiming to be Cee Cee-users in HP technical support forum post to talk about his new hp F4809A battery July 10 Hewlett-Packard bought e9150t office nine days time, “the strike met 10 times . Cee-Cee question in this post 3 months after October 19, citing the response has already had up to 193, there are hundreds of users described in this quote their own use within the office e9150t HP and blue screen appears e9180t, automatic restart, and questions of the accident, there are 122 users have scheduled a joint complaint on the issue, has asked HP for a replacement computer.

In the posts, many users have reported having tried a variety of methods to identify the root causes of blue screen, and use different settings and drivers, switch to a different operating system, but the screen problem Blue is still pending. In their view, the most likely outcome of a blue screen problem is the motherboard. According to the poster says, e9150t and e9180t use the model of motherboard pegatronIPMTB-K.

While mobile users in China and office users abroad, the blue face of problems are always the product of the Board of Directors of HP has raised questions about quality, some users think of other HP products may be due to the same type of motherboard and the emerging problem of blue screen, but the press before, Hewlett-Packard had not yet been placed on the “Daily Economic News” highlighted “China in the HP products hp PB995A battery listed, use the same models that are used by pegatronIPMTB e9150t and e9180t model – K, motherboards,” “The products in question to a blue screen, HP will remember,” responded positively to these questions. HP said only that the two previous office products are not available in China, so the issue has no impact on users in China.

Quality of service has been criticized

It is noteworthy that Hewlett-Packard, not only did not respond positively to the blue door, but also for older graphics cards, door, screen door flashing, the screen door snowflake models involved are so far failed to take the recall, or other hp 346970-001 battery measures. The HP Service Department Gold service quality service center, since the snow on the screen since the incident came to light is also widely criticized.