Modular Cell Site Power System with Fuel Cell and LMP Battery
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Solution Overview
Problem
Conventional cell tower power systems require significant space and are time-consuming and costly to install due to the need for separate engineering and installation of each component, with complex decisions for augmenting or replacing equipment as site requirements change.
Innovation Solution
A modular power system integrating a base transceiver station, surge-protection equipment, rectification circuitry, a fuel cell, hydrogen gas tanks, and energy-storage devices, allowing for efficient delivery and installation, with lithium batteries providing backup power during AC failures and fuel cells generating non-combustive DC power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional separate installation of AC receiving equipment, diesel generator, and VRLA batteries is used, then each component can be individually optimized, but the total space required increases significantly
Solution Approach 1:
The patent combines AC receiving equipment, diesel generator, VRLA batteries, and BTS into a single integrated modular cabinet. This merging of previously separate components into one unified system reduces the total space required while maintaining all necessary functions for reliable power supply.
Solution Approach 2:
The modular cabinet serves multiple functions simultaneously: it houses power receiving equipment, generates power via diesel generator, stores energy in VRLA batteries, and provides BTS communication functions. This multi-functionality within a single unit eliminates the need for separate installations of each component.
2Adaptability or versatility
If each component is engineered and installed separately at individual sites, then site-specific restrictions can be addressed, but installation time and engineering costs increase
Solution Approach 1:
The entire power system is pre-assembled and pre-engineered as a complete modular unit at the manufacturing stage. This preliminary action includes integrating all components, configuring connections, and testing the system before delivery, so that on-site installation requires only placement and utility connections, dramatically reducing installation time.
Solution Approach 2:
The system is divided into standardized modular cabinets that can be deployed as complete units. Each module is self-contained and can be independently installed, allowing for scalable deployment while maintaining site-specific adaptability through modular configuration rather than custom engineering.
3Power
If existing equipment is augmented or replaced as site requirements increase, then power capacity can be increased, but engineering complexity and space planning difficulties increase
Solution Approach 1:
The modular system allows dynamic scaling of power capacity by adding or removing complete modular units rather than individually augmenting components. Each module is self-contained and can be independently configured, making it simple to scale power capacity by deploying additional identical modules without complex re-engineering.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The modular system reduces space requirements, simplifies installation, and ensures reliable power with minimal downtime, using efficient lithium batteries and fuel cells to maintain constant DC power, reducing engineering and installation costs while accommodating increasing site demands.
Implementation Method 1
The fuel cell then receives and consumes hydrogen gas to produce backup power for the BTS
Implementation Method 2
the energy-storage device provides uninterruptible power until the fuel cell becomes operational
Data Source
AI summary
The present invention is a modular power system using a fuel cell as a back-up power supply. The system includes lithium-metal-polymer (LMP) batteries to bridge and also for backup power if necessary. The entire system is preassembled ready for use so that it is available to a new or expanding site upon delivery. The total number of modular units used can simply be aggregated to meet additional power demanded.