Motion Vehicle Co., Ltd Shandong Branch of Qufu City, Shandong city streets and the South Pond Group to an annual 78 million annual output of 1 million lithium cum supporting electric cars lithium battery a total investment of 3-5 billion project, constructed in two phases, which An investment of 300 million yuan and registered capital of 100 million yuan, put into operation, to reach an annual output of 78 million lithium batteries and supporting an annual output of 1 million electric cars lithium battery production scale, the annual sales income of 2.1 billion years Taxes paid 120 million yuan, 3,000 job placement. Phase II will focus on the development of lithium battery electric motorcycles and electric cars and other products, further extending a rich industrial chain LTN184HT03 LTN173KT01 .

 It conforms to the “second Five-Year ” plan of development requirements, the directory is a key national industry to encourage the development of projects, products are mainly used in electric bicycles, electric motorcycles and electric vehicles, is now widely used lead-acid battery replacement Products, low-carbon, environmentally friendly, energy-saving features, with high added value and strong market competitiveness. Qufu Municipal Committee, vice mayor of the public move in his speech pointed out that the car industry Co., Ltd. Shandong Branch and Lu Xun city streets South Pond Group to an annual output of 78 million lithium batteries lithium cum supporting an annual output of 1 million electric car project start-up and commissioning Industrial technology will improve the content of our city and to play an active role in promoting job placement. Hope that the South Branch Pond Motion Vehicle Group Co., Ltd. in cooperation in the future to strengthen communication and close cooperation and achieve win-win situation LTN173KT01 LTN156AT05 LTN184HT01 .

 Shandong Qufu city departments and City Street Party Working Committee, the Office attended the signing ceremony.

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A, IDC needs room to the power supply has the following characteristics

1, the high reliability of power supply requirements

IDC’s customers are generally facing enterprise customers, some even for the portal, if the load is interrupted, IDC service providers will face huge losses, and therefore the reliability of power supply requirements are high.

2, the load capacity

IDC building into a huge room, and will take into account the growth in the coming years, so its large enough to be able to undertake the volume of business. Generally place a room of about 50-100 rack, each rack about a few kilowatts of load, the load of a room of about a few hundred to thousands of kilowatts, an IDC center may build more rooms .

3, the relative concentration of power supply

In order to share the risk, while taking into account the convenience of centralized management of power supply, generally based on the load capacity of a room to consider the load about a few hundred to thousands of kilowatts Apple A1185 battery , Apple A1189 battery .

4, the harmonic pollution of the equipment requires high

As the state of energy saving and environmental protection have become increasingly demanding, telecom operators to respond positively, while, IDC room is big power, power supply unit is the focus of concern, a high degree of harmonic interest, this is the trend .

Second, the traditional UPS Power Solutions

Requirements of traditional data communications equipment AC input power, usually with the mains power supply voltage and frequency of the same power, that is, 220V, 50Hz single-phase AC power supply. The traditional data communications equipment is the UPS system, power system, UPS system in general by rectifier, inverter, battery, and static switches and other components, electricity normally, the city is transformed into direct current power supply by Zheng Liuqi inverter, while a battery charging , the inverter will supply direct current to alternating current load change. UPS itself, load faults via static bypass switch is converted to electricity supply, electricity prolonged power outage, the standby generator power Apple iBook G4 12-inch battery , Apple iBook G4 14-inch battery .

Although IDC engine room equipment is single-phase power supply, but more and more power, single-phase UPS power can not do much, is limited, the solution is to use three-phase UPS power supply, power is generally assigned to three-phase average on the UPS and the same time machine, to solve their electricity supply reliability. Because UPS power ultimately flows through the inverse transform to the data device, if the inverter and switching part of the failure, the battery powered device not directly to the data will lead to the data device interrupts.

UPS power supply pattern of several common

1, series hot backup

UPS power supply eliminates this single point of failure, simple, but the same time, only one UPS load, so there is overloading poor, the main problem of uneven aging of equipment machines, has been less used Apple MacBook 13 inch battery , Apple MacBook Pro 15 inch battery .

2, the parallel redundant

This UPS power supply, the biggest advantage is that load sharing, which Renyiyitai UPS fault, its been cut off, UPS system does not make any change, still operate in online mode. According to load, be achieved by increasing the system capacity UPS’s expansion.

3, the dual bus power supply

This UPS power supply, the biggest feature is the 2-way independently of each other while providing the power supply bus, dual power supplies were provided to the load, or be provided by STS to the single power supply load. This is also a good way to eliminate single points of failure, but in limited supply scheme added LBS (synchronization) and STS (dual switch), it also increases the point of failure Apple MacBook Pro 17 inch battery , Apple PowerBook G4 12 inch battery .

UPS Supply Scheme advantages:

Mature technology solutions, currently in a large number of applications.

AC output, not easy to pull arc.

UPS Supply Scheme disadvantages:

And the machine is difficult, required voltage, frequency, phase synchronization.

System design complexity, more than a single point of failure

Transformation series and more, relatively low efficiency

Input harmonic large, low power factor

Third, the common 48V system solutions for hybrid bus

This structure is characterized by power system DC load and AC load-48V power supply system are used as the input power bus. Or rectifier in the mains failure, the battery is in parallel with the output bus bar, so the-48V bus power supply is uninterrupted. DC load bus directly from the-48V supply, the AC load through the inverter power supply, that is, with-48V DC power supply of the inverter instead of UPS Apple PowerBook G4 15 inch battery , Apple PowerBook G4 17-inch battery .

Hybrid system solution advantages:

Technology is mature, 48V power supply is truly uninterruptible power supply, the output of pure, so the system has been improved overall stability. Arc is not easy, safe.

Hybrid system solution Disadvantages:

AC load power in the chain increases the number of power conversion and low voltage, current, increased losses, reducing the system efficiency.

This applies only to the power system architecture for small and medium-power AC load conditions.

Fourth, high-voltage power rectifier rAC solution

INTELEC 2001, published in the “new telecommunications networks and services, the best new power supply” and published in 2000, “Telecommunications and data communications integration rAC supply of new research” as the representative of France Telecom trial. rAC power supply system, similar to the conventional 48V DC power supply system in the rectified DC bus from the bus alternative, in fact, the DC pulse. System consists of rectifier, high voltage batteries, battery switch, charger and so on. This rAC input power supply system for reducing harmonic currents and power factor need to compensate, on a bus to be connected in parallel in the rAC harmonic suppressors Apple MacBook 13 inch unibody battery , Apple MacBook 15 inch unibody battery .

rAC the advantages of high-voltage power supply solutions:

Only the power supply circuit in a transformation stage, low loss, high efficiency; battery charger to the battery only for offline charge, so smaller-capacity, low cost. rAC disadvantages of high voltage power supply solutions:

By using high voltage, high safety standards; with larger number of single batteries, battery management requirements more stringent.

V. Feasibility of high-voltage DC power supply

Internal power supply status data device is a computer host, monitors, printers and other electrical equipment are the internal power switching power supply, AC 220V input first rectifier, filter into a DC 300V, then the power switch and switch through the step-down transformers, voltage regulators into a low pressure, in order to provide power to all parts. Generally in the 110-250V AC voltage between the through rectifier, filtered DC voltage between 150V-340V. Therefore, for these devices to enter a 150V-340V DC voltage, the device is working properly. Into account, the rated voltage 228V ~ 280V (12V battery back-up 19 or 20) within the DC through the bridge rectifier, filtered is still the DC 228V ~ 280V, 150V-340V in between, so switching power supply can still work, the present data devices proved effective input DC270V or so  Apple Macbook Air 13 inch battery .

Sixth, high voltage DC power system solution for a

A high voltage DC for the exchange program input rectifier circuit and the battery, charger and rAC power supply system is the same. The difference is rAC power supply system for the rAC directly to the concentration of high-power DC / DC converter, and then its transformation to a stable high-voltage DC270V. Japan’s NTT company tested the system. If the AC input power failure, the battery via the DC power switch and DC / DC converter supplies the load equipment 270V DC.

Advantages of such a power system:

High reliability, high efficiency, large power equipment in the load will become more prominent; cost is low;

The disadvantage of such power system:

Using single high-power DC / DC, high voltage, current, demand higher safety standards; with battery quantity, battery management requirements more stringent Acer battery Acer BTP-42C1 battery .

VII, high DC power system solution II

This program is the domestic telecom operators to improve the supply room in the IDC trial power systems, telecommunications, represented the first Yancheng, and now some of the mobile telecommunications subsidiary branches are trial. 48V power supply system similar to the traditional, parallel redundant by a number consisting of rectifiers and batteries. Under normal circumstances, the rectifier will be converted to 270V DC electricity, the supply of telecommunications equipment, while a battery charge. Mains power failure, the battery discharge power for telecommunications equipment. Long power cut, by the standby generator power. Traditional-48V DC power supply system, as the battery standby time is 1 ~ 24h, the typical battery standby time is 1 ~ 3h. This high-voltage DC power systems, the advantages of the trial to be more fully reflected.

Advantages of such a power supply system:

Reliability: Modular power output and battery power directly parallel to the load, the battery directly in parallel to the output bus, the bus power supply is uninterrupted. Using hierarchical distributed control, rectifier module and CSU failure independently controlled, to avoid trouble spread Acer TravelMate 290 battery , Acer LCBTP03003 battery.

Easy to maintain: and the machine is easy, modular power supply design, support charged hot-swappable, easy to replace, the use of hierarchical distributed control, rectifier module and CSU can be independently controlled, easy to maintain.

Intelligent management: This system and the traditional 48V DC power supply systems, system management, intelligent management of a comprehensive model; on the battery part of good management, effectively extending the battery life.

Harmonic interference-free, easy expansion: For computers and servers, with DC input, phase and frequency no longer exists the problem of parallel machines become more easy, no harmonic interference.

Security: The standard electrical cabinet, the output of the shunt and bus insulation condition can be real-time monitoring and high security.

Cost: the same system capacity, high voltage DC power supply system due to use of N 1 model, low investment, cost-effective Acer Aspire 5520 battery , Acer Aspire 5520G battery .

The disadvantage of this power supply system:

The DC power supply system requires special components; of devices requiring high arc; the high voltage, non-zero crossing of the high security requirements.

VII, high DC power system solutions for the three

High voltage DC power supply system Option II Option III power supply system and is similar, the difference is that the program increased three-step-up power supply system circuit, the DC output voltage to 400V (power supply system in such a similar move companies have experimental points, the DC voltage 350V). Is for a dedicated server, high-voltage power supply, this server is currently still being developed, as the system output voltage, current in the use of a large number of servers Youxie is not available, but for some prominent advantages, may be a future development trend.

Advantages of this scheme power supply system:

Modular power supply, battery directly connected to the load, uninterruptible power supply bus; power efficient, the most energy; output is DC-free rate factor and harmonic problems, with a maximum load capacity; power cable finest, cost and space Acer Aspire 5720 battery , Acer Aspire 5720G battery .

The power supply system of the shortcomings of the program:

Easy installation failure caused by arc removal; high requirements for security, the device requirements are high.

Conclusion

The rapid development of telecommunications technology equipment and technology to promote the progress of the power supply, high voltage DC power system solution II and Option III because of its high reliability, high efficiency, especially for large power equipment supply room where the IDC. Option II for the current server room is currently the IDC relative power of the transformation of the most appropriate program, the program may be a three-room equipment IDC supply trends. IDC room power supply system in the end what is best, but worthy of further exploration and research will eventually find a suitable solution Acer Aspire 5920 battery , Acer Aspire 5920G battery .