Wireless Temperature Container Induction Power Against Moisture Exposure
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Solution Overview
Problem
Existing food containers with temperature maintenance functions using wired power transmission expose electric elements to moisture and gases, leading to oxidation and reduced service life.
Innovation Solution
A wireless temperature maintenance container with a transmitter circuit and receiver circuit housed in an accommodating space at the bottom, utilizing wireless power transmission to power a temperature controller via electromagnetic induction, protecting electric elements from moisture and gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired power transmission is used to power the temperature controller, then the temperature maintenance function can be achieved, but the electric elements are exposed to moisture and gases causing oxidation and reduced service life
Solution Approach 1:
The patent replaces the mechanical wired power transmission system with a wireless electromagnetic induction system. The transmitter circuit board and receiver circuit board are positioned facing each other with a gap, eliminating physical wire connections that would penetrate the container body and expose electric elements to moisture and gases. Power is transmitted through electromagnetic fields across the gap, maintaining reliability while preventing harmful exposure.
2Reliability
If wireless power transmission is implemented, then electric elements are protected from moisture and gases, but the device complexity increases due to additional transmitter and receiver circuits
Solution Approach 1:
The patent merges the power transmission and temperature control functions into an integrated wireless system. The transmitter circuit board combines power conversion and wireless transmission components, while the receiver circuit board integrates power reception and temperature controller functions. This consolidation achieves element protection without proportionally increasing overall device complexity.
Solution Approach 2:
The patent uses a non-conductive barrier (such as a thin film or shell) to separate the transmitter and receiver circuit boards while maintaining electromagnetic coupling. This barrier protects the electric elements from moisture and gases without requiring complex sealing mechanisms, as the non-conductive material naturally prevents both electrical contact and moisture penetration.
3Loss of energy
If the transmitter and receiver circuits are placed close together for efficient power transmission, then energy loss is reduced, but the risk of electromagnetic interference and moisture contamination increases
Solution Approach 1:
The patent introduces a non-conductive barrier as an intermediary between the transmitter and receiver circuit boards. This barrier maintains a controlled gap that allows efficient electromagnetic power transmission while preventing direct contact that would cause short circuits or moisture contamination. The intermediary optimizes the balance between transmission efficiency and protection.
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 solution effectively maintains the temperature of contents within the container while protecting the electric elements from damage, enhancing usage security and service life by eliminating direct exposure to moisture and gases.
Implementation Method 1
The transmitter coil receives the alternating current and generates a magnetic field based on an electromagnetic induction
Implementation Method 2
The magnetic field passes the receiver coil and another alternating current is generated based on the electromagnetic induction
Data Source
AI summary
A wireless temperature maintenance container has an accommodating space accommodating a transmitter circuit and a receiver circuit. The transmitter circuit comprises a first power processing circuit and a transmitter coil. The first power processing circuit receives a utility power and outputs a first direct current. The transmitter coil receives the first direct current and generates a magnetic field. The receiver circuit comprises a receiver coil, a second power processing circuit and a temperature controller. The magnetic field passes the receiver coil and an alternating current is generated. The second power processing circuit receives the alternating current and outputs a second direct current. The temperature controller receives the second direct current to control the temperature of the container. The transmitter circuit is on the first circuit board, and the receiver circuit is on the second circuit board. Distance between the first circuit board and the second board is 2 mm˜4 mm.