Removable Battery Inverter for Portable Light Tower

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Solution Overview

Problem

Existing portable lighting systems face challenges in providing reliable and efficient power conversion from direct current (DC) to alternating current (AC) for outdoor and indoor applications, particularly in scenarios requiring mobility and quick power source swapping.

Innovation Solution

A portable lighting system comprising a light tower with an extendible mast, a battery pack, and an inverter that converts DC power from the battery pack into AC power, featuring a removable and rechargeable battery assembly and a portable inverter with hot-swappable capabilities, allowing for continuous operation without downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a portable lighting system uses a battery pack with an inverter for DC to AC power conversion, then the system provides reliable and efficient power conversion enabling operation at maximum brightness, but the system requires quick battery swapping capability to maintain continuous operation without downtime

Engineering Contradiction:
Improvepower conversion reliabilityVSAvoidbattery replacement downtime
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The battery pack is designed as a separate, removable module from the inverter and light tower system. This segmentation allows the battery to be independently replaced without affecting the other components, enabling quick swapping to maintain continuous operation while preserving reliable DC to AC power conversion through the inverter.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system is designed with pre-configured battery receptacles and electrical connections that are ready for immediate battery insertion. The inverter and light tower are prepared in advance to accept a battery pack, eliminating setup time and enabling rapid battery replacement to prevent operational downtime.

Inventive Principle:
Principle #10Preliminary action

2Area of stationary object

If the light tower uses an extendible mast to increase height and brightness coverage, then the illumination area is expanded, but the system complexity and structural requirements increase

Engineering Contradiction:
Improveillumination areaVSAvoidmast structure complexity
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The mast is designed as an extendible, dynamic structure that can be adjusted in height as needed. Rather than a fixed complex structure, the mast can be extended or retracted based on operational requirements, reducing permanent structural complexity while still providing expanded illumination area when extended.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The extendible mast provides vertical dimension adjustment to expand illumination area. By utilizing the height dimension, the system covers a larger ground area without requiring proportional increases in horizontal structure complexity, achieving area expansion through vertical adjustment.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 system provides reliable and efficient power conversion, enabling the light tower to operate for up to 6.5 hours at maximum brightness, with the ability to quickly swap batteries and maintain continuous operation, addressing the need for mobility and efficient power management.

Implementation Method 1

an inverter configured to receive and convert a direct current power from the battery pack into an alternating current power

Methodology Applied
Scientific EffectPower conversion (DC to AC):

Data Source

PatentUS11708947B2Portable lighting system including light tower and inverter having removable battery pack
Publication Date: 2023.07.25 BRIGGS & STRATTON CORP
  • US11708947B2 patent drawing
  • US11708947B2 patent drawing
  • US11708947B2 patent drawing

AI summary

One embodiment of the invention relates to a light tower. The light tower includes a base, an extendible mast coupled to the base, a light assembly coupled to the extendible mast and electrically coupled to the battery pack, and an inverter configured to receive and convert a direct current power from the battery pack into an alternating current power. The extendible mast is configured to move between a lowered position and a raised position.