CCSN Power 5G base station outdoor integrated power supply

I. Overview

5G base station construction is developing rapidly. As one of the base station power supporting facilities, the power supply equipment is the prerequisite for determining whether a base station can operate normally.

The construction of 5G base stations is developing rapidly. In 2019, we witnessed the official commercialization of 5G equipment. This year, even with the sudden impact of the epidemic, many provinces and cities have continued to exert their efforts in the construction of 5G base stations, and spared no effort to accelerate the scale of construction. According to data from the Information and Communication Administration of the Ministry of Industry and Information Technology, in May 2020, the construction of 5G network telecommunication base stations has exceeded 250,000, and it is expected that by the end of 2020, the number of base stations in China will reach about 650,000.

Excerpt from the Industrial Research Institute of the Ministry of Industry and Information Technology

In the development of 5G, base stations go first. At present, the 5G base stations under construction in China are mainly macro base stations. Usually, its main components include iron towers, BBU (baseband processing unit), AAU (active antenna unit), optical fiber, base station cabinet, power supply, battery, Air conditioning, monitoring equipment, etc., among which the power supply equipment as one of the power supporting facilities, are the prerequisite guarantees for determining whether a base station can operate normally.

At this stage, distributed power sources are used as the source of power supply for 5G base stations, because after 5G large-scale communication terminals are allowed to access the network, resources such as distributed power sources and user-side energy storage can make the entire power system sound and stable. Adaptability and flexibility to optimize the normal operation of the power system.

Therefore, it can continue to research and develop to meet the new needs of 5G base station power supply systems, and improve reliability in terms of power density, specific energy, and intelligent battery management. Outdoor distributed base station integrated power supply design performs in terms of safety requirements, power control and final circuit protection. The pass rate is even stricter.

In terms of the entire outdoor distributed base station integrated power ecosystem, whether it is chipset and equipment manufacturers or service operators, they are promoting the reduction of 5G base station power consumption. In the final analysis, it is the basic components, batteries and other components as core performance.

Second, 5G base station outdoor intelligent integrated power supply

At present, our company's CCSN NY series outdoor power system provides a complete and reliable integrated solution for outdoor communication equipment. With complete battery management, it can realize intelligent temperature compensation, automatic voltage regulation, wireless current limiting, battery capacity calculation, and sleep energy-saving lamp functions. Meet the network construction needs of 3G, 4G, 5G data communication equipment transmission equipment and access equipment.

2.1 Components

DC power supply, AC and DC power distribution, UPS monitoring system, battery, etc. 

2.2 Product features

2.2.1 The equipment warehouse and battery warehouse adopt air duct isolation technology to improve the safety and heat dissipation of system equipment.

2.2.2 The battery compartment uses TEC refrigeration technology to double the battery life.

The semiconductor refrigeration chip is a current-transducing chip. Through the control of the input current, high-precision temperature control can be achieved. In addition to the temperature detection and control methods, the automatic control system is realized. Reduce the power output of the power system due to excessive temperature.

2.2.3 Sleep function, improve system efficiency

The mains is normal, and the power supply is directly bypassed to the load. The redundant accessories of the power cabinet are in the dormant state. The module is not completely shut down when not in use, but thermal sleep, that is, the module is turned on, but does not output current, and When the mains is abnormal or other modules are faulty. It can come to work quickly.

Peak cut and valley filling

Maintain the peak value of mains electricity through 5G intelligent switching power supply and intelligent battery to control the current network power supply.

Set the mains capacity limit in the 5G intelligent power monitoring module, and realize the peak shaving of the mains by controlling the charging current limit of the current network power supply, controlling the charging and discharging of the intelligent lithium battery, and turning on/off the air conditioner.

• Load demand P load

• Load demand P load = external city power capacity P, external power: the external city power supplies the load.

• Load demand P load> Outer city power capacity P, Outer power: Outer city power and smart lithium battery supply power to the load at the same time.

2.2.4 Perfect fault protection and alarm function

Undervoltage protection, output overvoltage protection, output short circuit, overtemperature protection, low battery voltage alarm, etc.

2.2.5 Lightning protection, IP55

2.2.6 Anti-theft monitoring components to enhance the anti-theft capability of equipment

An anti-theft device for a monitoring box based on 5G communication includes a processor and a monitoring unit, an alarm unit, a power supply module and a 5G communication module connected to the processor, respectively; the monitoring unit is used to monitor the working status of the monitoring box in real time and collect monitoring All kinds of electricity consumption data in the box, the alarm unit is used to issue an alarm when the data is abnormal, the power module supplies power to the anti-theft device, and the 5G communication module is used to upload the working data in the monitoring box in real time using a 5G network system. The monitoring data has low transmission delay and high rate, which meets the high requirements of real-time remote monitoring.

2.2.7 Multiple connatural interfaces, flexible networking

RS232, RS485, network port, dry contact, etc.

2.2.8 Battery: lead-acid battery and lithium battery for selection

Advantages of lead-acid batteries:

1. Good safety performance. Can continue to be used after patching.

2. The price is cheap. The price of lead-acid batteries is about 1/3 that of lithium batteries.

3. Recoverable and reverse repair. Lead-acid batteries are highly recyclable.

Disadvantages of lead-acid batteries

The weight is large, the battery capacity is limited, and the lifespan is short. Lead-acid batteries are generally within 400 times of deep charge and deep discharge, and the lifespan is about two years.

Advantages of lithium battery:

1: Light weight and small size. The volume of the lithium battery is 2/3 of the volume of the lead-acid battery, and the weight is about 1/3 of the weight of the lead-acid battery.

2: Long life. The average life of the lithium battery is about 4 years, which is about 1.5 times longer than that of the lead-acid battery. It is charged and discharged more than 500 times. The battery has no memory and has strong shock resistance.

3: Overcharge resistance, good charge and discharge resistance. Under normal temperature, the lithium battery can be charged continuously for 48 hours without any accidents such as battery expansion, leakage and rupture, and the capacity remains above 95%. And under the special charger, it can charge and discharge quickly.

Disadvantages of lithium batteries:

The production cost of lithium batteries is high, and the price is probably more expensive than lead-acid batteries. Lithium batteries are not recyclable.

2.2.9 Application cases

CCSN 5G base station intelligent power supply has been applied to more than 3,000 units in towers and mobiles.

All rights reserved by CCSN Power

Issued by: Liu Ming

Audit: KAILON CHUNG

Translator:Kailon 

CONTACT INFORMATION:

張建龍 KAILON CHUNG

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