Digital battery

In response to the most powerful features of the 3C products, battery technology must also constantly develop initiatives to provide this generation of power more hungry, more eager for 3C products. The four most common types of rechargeable batteries - nickel-cadmium, nickel hydrogen, lithium ion and lithium-polymer at the end what is the difference? What are the advantages and disadvantages of each? Xiao Jiang in this year trying to find on the network to analyze the data you send.

 

Nickel-cadmium batteries (NiCd)

 

Is the oldest of a rechargeable Laptop battery technology, earlier in 1899, was invented out. Nickel-cadmium batteries can withstand a short-term benefit is that many releases, and the process of charging the reaction is endothermic - the latter feature can be quickly charged or not cause too much damage to the battery. Nickel battery voltage is 1.2V cadmium, than ordinary alkaline batteries 1.5V slightly less marked, but because the process of voltage alkaline battery discharge will continue to fall at a time when no power n ‘ is typically only 1V, but the nickel-cadmium batteries will have been to provide a stable 1.2V voltage without electricity until the date, so the majority of electronic products using alkaline batteries can be used in nickel cadmium batteries, no problem.

 

Better known shortcomings of nickel-cadmium batteries is the so-called “memory effect”, ie when the battery is discharged there is still no electricity, no longer charge the battery “remember” this position after the electricity used in such a long time left, the battery occur, and do not like the answer to electricity (transient voltage drop). Therefore, nickel-cadmium rechargeable batteries need to go through a period of pre-discharge process will be private only after charging power. Most nickel-cadmium IBM ThinkPad X60 battery charger will discharge the function automatically.

 

Nickel-cadmium batteries, for storing loads of smaller (probably only alkaline batteries 1 / 4), and cadmium are toxic heavy metals, making it less visible. Most applications have been near its nickel-metal hydride battery (NiMH) battery replaced.

 

Nickel-metal hydride batteries (NiMH)

 

Nickel-metal hydride batteries and nickel-cadmium batteries are nearly the same technology, but will be replaced by the hydride anode cadmium only. This is the most features and the same nickel-cadmium batteries, but electricity build higher memory effect is somewhat less obvious (but actually still exists). Ni-MH battery biggest problem is that it has a high self-discharge rate, which is obviously saturated electric charge of the battery, do not book a month, the power to be out May 30 percent less spectrum.

 

The use of 5 (AA) and 7 (AAA) applications-size Dell Latitude D410 battery, nickel-metal hydride rechargeable batteries are currently the mainstream, but has a greater capacity to feed demand, or need to make hours of volume, it is required by lithium-ion batteries by …

 

Li-ion battery (Li-ion)

 

Lithium-ion batteries battery is almost fantastic, has a large capacity, small size, light weight, no memory effect, the tension is high, and self-discharge is small, therefore not surprising that the majority see the modern 3C products were obtained using lithium-ion (or lithium polymer) battery has.

 

But the seemingly perfect lithium-ion battery is always a risk - the most obvious point that it has quite a strong tendency to self-explosion, but so much energy packed into a small space, and exploded is very dramatic to wait a. To avoid a dangerous place, lithium batteries should be many safeguards in the hp 417066-001 battery charging and overshoot or overheating, and automatic shutdown. These additional circuits and institutions, so there is no III / IV-size lithium-ion batteries, and why such a high price due laptop battery.

 

Lithium-ion batteries have a characteristic relatively little known interesting is that you have not used it will be the largest building materials capacity of the battery with an oxidation decreased gradually. In general, at room temperature, the lithium-ion batteries to increase the power will decrease by about 20% per year, and over temperature, load survived eating, falling rapidly, has survived. So if you have a notebook cooling relatively poor, so much time at full power at 60 ° C environment lithium battery can lose 40% within three months from the accumulation of power.

 

Here are suggestions for the lithium-to-date:

 

1. Do not use only the electric light rechargeable - lithium do not like being discharged into the finish, so if you often find themselves using the power of the laptop dry, then he changed the helm of the largest battery stars!

2. Do not load to full power over - as I said before, battery chargers and more saturated, the power has fallen even faster, so keep saturation 60 to 80% is the best state. In addition to Panasonic’s pen seems a pity that foreign power, to achieve this is not easy.

3. For each batch of 30 regular and landfill, we have come to use “dry” discharge - Lithium-ion battery itself is not afraid of a short period of time, a small quantity of charge and discharge, but the protection circuit above may be denial of justice at the end now, how much sony VGP-BPS5A battery power there. A major electrical discharge to dry, then charged at full saturation should be able to protect the loop “correction” to return. Many laptops have a software or even when in the BIOS to provide such functionality.

4. Notebook using AC power source, remove the battery down - because the previous building, said the decline in power. Remove the battery down, at least he did not have access to the computer itself, the heat. If the battery has subsequently launched a refrigerator better.

5. The battery when it is closed, leaving about 40% of electricity inside - leaving too many questions will strengthen the capacity reduced, leaving too little may damage the battery. Nansi Hu really ah!

6. To buy the batteries must buy a new - a new battery has full power Oh!

 

Lithium-polymer battery (Li-Pol)

 

Lithium polymer and lithium-ion batteries, as a rule, only part of the polymer electrolyte instead. This makes lithium-polymer batteries can be molded into a variety of forms (for consumers is not a good thing), in line with the demand to be different. Lithium-polymer batteries are also safer than lithium-ion batteries at high temperature, impact, but there is always an overload when the risk of explosion. Other maintenance principles are the same, and lithium-ion battery (therefore prefer to use the mobile phone battery lithium load each day, do not use photo-electric and have dependents).

Investment consultants in the Manufacturing Research Center were informed that the letter of June 25 the Ministry of daily published the “new corporations power of the automobile rules and access management products, and was effective on July 1 to December 31, 2010 applied. Investment Advisor in the new energy industry researcher Sheng automotive Li-mao said, according to the ministry of public letter issued new standards for nickel-metal hydride Laptop battery production hybrid passenger car is classified as a mature product that allows nationwide sales of the use of pairs of nickel-metal hydride battery industry is a big plus.

 

I. Analysis of nickel-metal hydride development of battery

 

Nickel-hydrogen battery has entered the maturity phase, is currently used in hybrid power system of the vehicle battery, the only real validation was commercial, battery systems to large scale, global mass produced hybrid car been used in any system of nickel-hydrogen cells.

 

According to the Investment Advisor “issued by the new energy vehicles in China during the 2008-2010 Industry Analysis and Investment Consulting Report” report shows that the batteries of 99% from current market hybrid battery for nickel-hydrogen, sales representative of Toyota Prius. Cars Currently, the world’s leading manufacturer of battery electric vehicles are mainly in Japan and Sanyo PEVE, PEVE Global Hybrid-Powered occupy the Ni-MH Dell Inspiron B130 battery 85% market share, is currently the main commercial hybrids like the Toyota Prius, Estima and Alphard and the Honda Civic, Insight Dengjun used PEVE hydrogen nickel.

 

Currently, the Chang’an Jie Xun, A5 Chery, FAW Pentium, General Grand Hyatt brands like models of cars were running, they are also used in nickel-hydride batteries, metal but the batteries are buying from abroad, domestic nickel-metal hydride batteries in the car on the use of the game is still in development phase. Keli Yuan is currently working with domestic Chery Automobile, Chang’an Automobile and other cooperative operation, the first production line of products are mainly supplied Chery Automobile.

 

2, Ni-MH battery industry and company analysis

 

In the field of nickel-hydrogen batteries, China in technology and resources are an advantage, in which the performance of nickel hydroxide in the world, rare earth rich in natural resources, offers unique advantages in resources Therefore, the development of nickel-hydrogen cell is the most realistic option in the country.

 

Investment Advisor in the new energy industry researcher Sheng automotive Li-mao that Ni-MH Industry Perspective battery chain, manufacturers of upstream raw materials for mining companies the extraction of metals, midstream for nickel-metal hydride hp Pavilion ZE2000 battery materials supplier, downstream of the battery manufacturer. From a more optimistic view of the industry chain of downstream manufacturers, the current state of competition in the supply of upstream companies, the balance of demand, but the battery power is far downstream and midstream Keli Torch High-tech manufacturers are in short supply in the state.

 

The extraction of nickel in the upstream sector with Jean-nickel industry, while the average production of nickel-metal hydride battery materials, domestic listed companies, including technology Jinrui (cathode material for the hydroxide nickel), Xiamen Tungsten, and Baotou Steel Rare-earth (RE anode materials for powdered hydrogen storage alloy), in which Xiamen Tungsten is Ni-MH battery production of powder storage of the Hydrogen largest companies, but also involves the production of cathode materials for lithium sony VGP-BPS5A battery, with a maid’s room for development.

 

Downstream firms, the domestic production capacity nickel-hydrogen battery or plan to enter the field include Chunlan Group, Ke-Li Yuan, the Torch High Technology, Hunan Shenzhou share Kane, etc., which Chunlan Group is nickel, the technology of hydrogen fuel cell HEV leader in its market share in a leading position in the torch high technology and Hunan Shenzhou owned a number of basic technical and market position, so that a force well and Kane Share The main products are still limited to the single battery, battery project under construction or under construction, the outlook clear.

 

Thirdly, the outlook for nickel-hydride batteries, metal

 

Li Sheng-mao said that with the international price of oil rose to $ 70, vehicles with new energy benefits start to show. World crude oil supplies tight and prices continued to raise, government, research institutions and companies to accelerate the development and promotion of new energy vehicles for the direct driving forces. At the same time, changes in international energy into the environment, but also new energy vehicles (hybrid cars currently primarily) enters the scene, creating market conditions.

 

In the development of new energy vehicles, nickel-hydride technology of metal drums the most mature in the next three years will remain the mainstream of new energy vehicles, followed by nickel-hydride technology of metals apple A1008 battery and lithium iron phosphate, hydrogen fuel cells, one third of the world, five years after gradual lithium batteries and fuel cells have been replaced. Battery giant Panasonic and Sanyo also found that lithium-ion battery can be replaced within 2 ~ 3 years, nickel-hydrogen batteries, mainly due to cheaper nickel-safe hydrogen batteries, has reached high production wide. Lithium batteries also need to continue to research topics such as security, so take time business.

 

According to economic analysis of Japan Fuji mainstream nickel-metal hydride batteries will be able to continue until 2011, but after 2011, Li-ion battery will gradually erode the market share of nickel-hydride batteries, metal The agency predicted in 2009 car-use nickel-metal hydride rechargeable batteries in the world market size than the previous year by 23.7% to ¥ 92,000,000,000, but the 2015 Ni-MH rechargeable battery-vehicle market will be reduced to ¥ 55,000,000,000.