New Battery Choice

As the global development of vehicles to clean alternative fuel has risen sharply, driven by fuel cells to the number of hydrogen vehicles is also increasing rapidly. ThinkPad R52 battery ThinkPad T40 battery

 

June 16, a company managed by the British manufacturing Riversimple zero-emission hydrogen-powered vehicles available in London, the car can take two people, maximum payload of 350 kg, a maximum speed of 50 miles per hour , can travel per gallon of fuel 350 miles. The car as a city car to complete the promotion.

 

The use of cell car Hydrogen Fuel Cell Technology Shanghai Co., Ltd. Qing capable of producing.

 

With the American Automobile News? China “in an interview in Shanghai Qing Energy Fuel Cell Technology Co., Ltd. CEO George Gu said that the use of hydrogen fuel cells and hybrid electric portfolio of vehicle battery, will be the new direction of development.

 

Mr. Gu said that the weight of batteries due to their own problems, with many restrictions. Using the weight of large vehicles need more battery power to drive. However, for hydrogen fuel cell and battery requirements for motor vehicles has been divided between cruising and accelerating momentum, the hybrid can be like a normal car driving, “he added. Inspiron 1300 battery Inspiron 1318 battery

 

Mr. Gu said: “Fuel cells could be used to provide power capacitors cruise car, while the battery provides peak power can be accelerated.,” And the capacitor can also be obtained in under braking to recharge the battery.;

 

However, an industry analyst with Global Insight Senior Duan Wu expressed doubts about “taking into account all aspects of barriers, I think these vehicles will be used for display purposes, also suitable for use up to a very limited uses, such as the Expo or on a college campus.;

 

Based in Singapore, Horizon Fuel cells produce almost 100,000, and a number of vehicles to fuel cell developers supplies, including vehicles with fuel cells are engaged in research of Chinese universities. The company employs 120 people in Shanghai, with production and R & D base.

 

The Chinese government encourages the development of vehicles to hydrogen fuel cell. Shenli Technology Shanghai Co., Ltd. is a developer of technology for fuel cells, the spokesman for the company Sunny Sun, said the company is on the car-size passenger cell project vehicle fuel, in cooperation with the Government. hp Pavilion DV1000 battery  hp Pavilion dv4000 battery

 

Sun said that the divine power of the enterprise system of fuel cell hydrogen power can generate electricity to drive motors and cars. Used for re-charging time is normally 10 minutes.

 

To re-charge time is installed in passenger cars on the reservoir pressure hydrogen storage and the size determined, Sun said. If the pressure is high time to re-charge will be longer, or if large, the time will be longer, but it is usually 5 to 10 minutes long.

 

Sun says that from the fuel cell power company divine propelled passenger cars will be first next year at the Shanghai World Expo.

 

Currently, Beijing has two fueling station in Shanghai Hydrogen is the only one.

 

However, Shanghai will also build four refueling station hydrogen. She said: “By 2010, Shanghai will have five fueling station available hydrogen for Expo 2010 Shanghai World show the use of fuel cell vehicle. Sony VGP-BPS2 Sony VGP-BPS2A

 

Volkswagen and its partner Shanghai Automotive Industry (Group) Corporation has led to the development trend of fuel to China of automotive technology hydrogen fuel cell.

 

Nikolas Thork spokesman for Volkswagen in China, said: “Volkswagen is actively engaged in research on cell vehicles and hydrogen fuel development, not only in Germany and China.”; Shanghai Volkswagen and the University Tongji cooperation, the Volkswagen Passat zones according to Shanghai Volkswagen passenger cars, has developed a cell cars fuel Passat Passat. ;

 

In 2008, one of 20 Passat Passat convoy of vehicles to fuel cell for the Beijing Olympics with a green transport services.

 

In addition Passat Passat vehicle fuel cell, the carmaker Volkswagen in Germany has developed several other vehicles to fuel cell, such as HyMotion Bora, Touran and Tiguan HyMotion HyMotion. Thork that these models have been introduced in China and participate in a number of technical exchange activities. PA3451U-1BRS PA3399U-1BAS

 

However, Volkswagen has said, must still be put into commercial production of these vehicles in the plan immediately. Thork said, “the further development of vehicles with fuel cells are still among the latest will not make a clear production plan.

3 Load parallel

 

To answer some single battery charge and the discontent of the rechargeable battery on the issue of electricity, but also developed a parallel approach to care. ThinkPad T41 battery ThinkPad T42 battery

 

 

But alternative methods of pricing need for multiple low voltage, high current charging power for each battery only, it is charging the costs of energy supply are high, the reliability is low, pricing efficiency is low, the connectivity defect diameter such as rough, so there is no significant scope for the use of this method of pricing.

 

4 series of high current load, plus a small charge current shunt

 

Because of these three types of pricing methods there are some problems, I developed one of the most appropriate packages for high voltage battery, especially in the electric vehicle battery charging method, which uses a management system and battery charger series of coordination busiest pressure constant current limit in parallel mode low load current. Inspiron 9200 battery Inspiron B120 battery

 

This pricing method has the following characteristics:

 

(1) Because the BMS according to avoid overload to ensure that the battery is no question of overcharging. Of course, if BMS does not communicate with the offer parallel pricing power and control because of the constant tension load power in parallel the value of general and lithium-ion battery Lithium-ion battery is fully charged when the voltage of the same value, so it will not Overcharge problems.

 

(2) As can be loaded in parallel, you do not need a low reliability, balance, cost is relatively high circuit, and the charge effect is better than a balanced circuit with the only method of charging standard, and its maintenance and management is also simple and easy. Inspiron B130 battery Latitude D410 battery

 

(3) The series is much larger than the shunt charging current maximum load current (usually more than 5 times), who can guarantee that in a short period of time greater capacity, and thus play a series of load maximum effect.

 

(4) load in series and parallel loading loading control, and the number of parallel supply charging power to have flexibility, you can simultaneously charge may be made after the end of the series parallel load free ; can also use a parallel in the charging voltage supply depending on the battery situation with the lowest voltage battery in turn.

 

(5) With the development of technology, parallel charging power may be a non-contact power load (the load without power cord) or a solar battery, making it easy to compare the load. Latitude D800 battery Latitude D810 battery

 

(6) When the battery pack lithium ion in the relatively large number of one lithium ion battery pack lithium ion can be divided into a number of module battery lithium ion for each block of lithium-ion batteries and a charger module uses coordination BMS large series load current and limit voltage constant of the association in parallel fashion small charging current to recharge.

 

Its main purpose is to reduce the number of battery cells in series were over, the relative consistency between the single battery is even worse, where BMS coordination and the loader loads the method of pricing gaps of poor performance to play a BMS charger and coordination of pricing maximum effect fashion.

 

This method is particularly suitable for high voltage battery is replaced by a fast low voltage (eg 48V) battery system modules, to form a battery system, so you can replace the battery charging station or station load in parallel or repair (usually the user fees in general are not parallel load), depending on the actual situation at hand sorting and re-distribution group. Latitude X1 battery XPS M1210 battery

 

In short, this management system and battery charger series of coordinated high load current and the parallel voltage constant current limiting load small current charging method can effectively solve the lithium-ion rechargeable batteries in series seem too easy to charge the electrical charge dissatisfied with questions such as, and can be loaded in parallel to supply charging power to avoid the high cost, low reliability, the charging efficiency is low, the diameter and thickness Login so on, is the most appropriate packages for high voltage battery, especially in the electric vehicle RN873 Y6142 battery charging method.

The lithium-ion batteries due to high voltage, small size, light weight, no memory effect, no pollution, low self-discharge cycle life long, is an ideal power source. In actual use, in order to obtain a higher voltage discharge, usually at least two series consisting of lithium-ion single use lithium-ion battery. Currently, lithium-ion battery pack has been widely used in notebook computers, electric bicycles and a variety of areas such as food relief. ThinkPad R52 battery ThinkPad T40 battery

 

Therefore, how to recharge the lithium-ion battery is good use is particularly critical now commonly used in lithium-ion battery charging methods and I think more discussion on the most appropriate method of pricing is as follows:

 

A series of regular pricing

 

Lithium-ion current rechargeable battery packs are generally used in support of the series, mainly because of the serial loading method for simple structure, inexpensive and relatively easy to implement. However, among the simple capacity lithium ion, impedance, attenuation characteristics, self-discharge performance differences in the number of lithium-ion battery charging, the battery capacity of the smallest of the bird single lithium-ion will be the first one is full of electricity, at a time when other cells are not yet fully charged, if it continues to charge in series, they were filled with single lithium-ion battery electric may be overloaded. Inspiron 1420 battery Inspiron 5100 battery

 

The overcharging lithium-ion would seriously compromise the performance of the battery, and may even lead to an explosion resulting in injury, therefore, to avoid overloading a single lithium-ion, lithium-ion battery when generally used with a management system battery (Battery Management System, known as BMS), through the management system of the battery by a single lithium-ion charging protection. Series pricing, where a single lithium ion battery voltage reaches the voltage overload protection, system power management will cut the series load circuit to stop charging to prevent over charging the battery n ‘ is that simple, but it will be another cause the lithium-ion batteries can not be fully charged.

 

After years of development, lithium iron phosphate battery power because of high security, a good cycle performance and other benefits have largely been able to meet the electric cars in particular, the requirements of electric cars, the Technology also has a large-scale production of basic conditions. However, the performance of lithium irons phosphate lithium-ion other there are still some differences, including characteristics of voltage lithium manganese batteries with lithium cobalt oxide different. Inspiron 5150 battery Inspiron 700m battery

 

Lithium iron phosphate full power fast lithium-ion is almost completely de-embedded from the cathode to the anode, the voltage across the battery to rise rapidly, there inverted curve phenomenon load This will entail the battery is easy to reach charging voltage. Therefore, the lithium iron phosphate rechargeable battery of some dissatisfaction with the phenomenon of electricity from lithium manganese batteries, which will be more apparent.

 

In addition, although some management systems of the battery with a balance of features, but because of cost, heat dissipation, reliability and many other considerations, the management system of batteries is generally far below balance of the current series of the current load balancing effect and is not very obvious, is where some single battery charge unhappy with the situation of electricity, which require a high load current for the lithium-ion such as electric vehicles using the case of the lithium-ion battery pack is even more evident. hp Pavilion DV1000 battery  hp Pavilion dv4000 battery

 

For example, the discharge capacity of 100 are for the lithium-ion battery 100Ah in series to form battery packs, but if 99 of them in one group of lithium-ion battery charged 80Ah old, too single Lithium-ion charged 100Ah, will recharge the battery in series, in which the bird monomer charged 100Ah lithium-ion batteries first full power to reach the voltage overload protection, so that the lithium-ion single before the load management system of the battery charging circuit will cut the whole series, also 99 more cells can be filled with electricity, and thus the full capacity of the battery discharge, n ‘ was that of 80Ah.

 

The overall capacity of the battery plant where the test plant will be the first battery and only then constant voltage constant current charging, constant current discharge, then measure the discharge capacity. A general evacuation capacity is roughly equal to the combined constant voltage constant current load capacity of carrying capacity. The burden of real drums during the series in terms of individual cells are usually not a constant voltage process, so it will be inconsistent ability to charge voltage, the PA3534U-1BRS PA3191U-3BRS battery capacity will be less than the capacity of single battery. General the higher the ratio of load current, load capacity at constant voltage minus the loss of battery capacity of the smaller, so they developed a management system and battery charger series of coordinated pricing model.

 

2 Management system battery and charger load coordination tandem

 

The battery management system is state of the battery performance and understanding of the equipment the most complete and the system of battery management and to establish links between the charger, you can understand time real battery charger data in order to respond more effectively to have battery charging problems.

 

The battery management system and the principles of responsible coordination mode charger are: management system battery through the current state of the battery (such as temperature, battery voltage monomer, battery current, coherence and temperature, etc.) to monitor, and use of these parameters on the load current of the A1008 A1012 battery current to estimate the maximum allowable process the charges through communication lines and charging management system Battery for connecting machines to share data. The total voltage system battery management, the maximum single battery voltage, maximum temperature, temperature, voltage maximum permissible load, the maximum allowable voltage of the single battery and the maximum allowable current parameters and d other sent in real time on the charger, charging machines may, under the battery management system provides information to change their pricing policies and output current.

 

When the management system provides the battery charge current maximum permissible that the charger designed for high current capacity, the charger output current in accordance with the design load when the HD438 KD186 battery voltage, the excess temperature, system power management in real time to detect and promptly to change the charger output current and when the load current exceeds the maximum allowable load current, the charger started to follow the crowd maximum allowable load current, thus effectively prevent the battery charging, to extend the battery life of purpose. Charging process in case of failure, the management system battery can be set maximum permissible load current to 0, forcing the charger off to avoid an accident, to protect the security burden.

 

In the method of load management system of the battery not only improved the management and control functions, but also allows the battery charger according to the state, real-time change of the output current to prevent load the battery all the batteries and load optimized held in view of the actual discharge capacity of the battery also larger than the ordinary series charging method, but this approach can not solve the battery is still some dissatisfaction the battery charge of electricity, especially when the number of multi-string battery pack, the consistency of the battery is low, the load current biggest. Vostro 1510 battery Vostro 1520 battery