External-Power Air Pump Without Built-In Battery Hazards
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Solution Overview
Problem
Conventional electric air pumps with built-in rechargeable batteries face issues such as security restrictions during travel and safety concerns due to high temperatures, particularly in vehicles.
Innovation Solution
An electric air pump designed to operate solely on an external power source, eliminating the need for a built-in battery, with a power supply port and starting switch for connecting to an external power source, and a control module for controlling the pump assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a built-in rechargeable battery is installed in the electric air pump, then the air pump can be recharged and used portably, but security restrictions during travel and safety concerns due to high temperatures occur
Solution Approach 1:
The patent removes the built-in rechargeable battery from the air pump system, extracting the power source component that causes security and safety issues. The air pump is redesigned to operate exclusively with an external power source, eliminating the harmful factors associated with internal batteries while maintaining portability through the external power connection.
2Ease of operation
If a built-in rechargeable battery is installed in the electric air pump, then the air pump can operate independently, but the device complexity increases due to battery management systems
Solution Approach 1:
The battery management system and associated control circuits are removed from the device by extracting the built-in battery. The air pump operates independently by maintaining a direct electrical connection to an external power source, simplifying the overall device architecture while preserving operational independence.
3Reliability
If the electric air pump is designed without a built-in battery, then safety and security issues are eliminated, but the air pump requires constant connection to external power source
Solution Approach 1:
The power supply function is segmented from the air pump body, separating the power source (external) from the pumping mechanism (portable unit). This segmentation allows the air pump to maintain high safety reliability without a built-in battery, while the power connection requirement is managed as a separate, simple interface between the external power source and the pump motor.
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 design ensures safety and convenience during travel by avoiding battery-related security issues and high-temperature hazards, allowing easy portability and operation without the need for a built-in battery.
Implementation Method 1
The pump assembly is drivable by electric power to pump air to sequentially flow through the inlet passage, the chamber, and the outlet passage
Implementation Method 2
The electric air pump has an inflating needle configured to be connected to one of the inlet passage and the outlet passage and configured to be contained in the containing space and limited in the containing space by the cover
Data Source
Figure 1
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Figure 3
AI summary
An electric air pump powered by an external power source has an outer shell (10), a pump assembly (20), and a control module (30). The pump assembly (20) is disposed inside the outer shell (10). The control module (30) is disposed in the outer shell (10) and has a circuit board (31), a power supply port (32), and a starting switch (33). The power supply port (32) is electrically connected to the circuit board (31) and is connectable to an external power source. The starting switch (33) is electrically connected to the circuit board (31) and is operable for controlling whether the circuit board (31) is electrically connected to the pump assembly (20). Thereby, the electric air pump needs no built-in battery.