Near Field Communication Circuit Overheating Protection

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Solution Overview

Problem

Conventional near field communication circuits can be damaged by overheating due to excess power received from electromagnetic fields, leading to temperature increases and potential impairment or damage to the circuit and surrounding materials.

Innovation Solution

A near field communication circuit with an antenna, circuit logic unit, energy storage, and shunt control circuit that operates in multiple modes, allowing excess power to be stored or reduced to prevent overheating, with the circuit logic unit controlling the shunt control circuit to manage the operating voltage and redirect power from the antenna to the energy storage when necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the near field communication circuit receives electromagnetic power from the antenna, then the circuit can operate and be supplied with power, but the circuit may overheat and be damaged due to excess power

Engineering Contradiction:

Improvepower supplyVSAvoidcircuit durability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent converts the harmful effect of excess electromagnetic power (which causes overheating) into a beneficial effect by directing the excess power to charge the energy storage element. The energy storage element acts as a sink for surplus power, transforming what would be harmful heat into useful stored energy that can be used later, thereby protecting the circuit while utilizing the excess power.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The energy storage element serves as an intermediary between the antenna and the circuit logic unit. It mediates the power flow by absorbing excess power from the antenna and releasing it when needed, preventing direct exposure of the circuit to harmful power fluctuations while ensuring continuous operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Power

If the circuit logic unit operates with high power from the antenna, then the operating performance is improved, but the temperature increases causing potential damage

Engineering Contradiction:

Improveoperating powerVSAvoidcircuit temperature

Core Design Contradiction:

PowerVSTemperature

Solution Approach 1:

The patent converts the harmful thermal effect of high power operation into a beneficial energy storage opportunity. The energy storage element captures the excess power that would otherwise generate heat, transforming the thermal problem into a useful energy reservoir that can be discharged later, thus maintaining high operating performance while preventing temperature-related damage.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Productivity

If the near field communication circuit uses excess power for operation, then the power utilization is increased, but the surrounding materials may deform or be damaged due to heat

Engineering Contradiction:

Improvepower utilizationVSAvoidthermal damage to surroundings

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent converts the harmful thermal radiation from excess power into a beneficial charging process for the energy storage element. By directing excess power to charge the energy storage element, the system maximizes power utilization while preventing thermal damage to surrounding materials, as the energy storage element absorbs the surplus power before it can affect the environment.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

This solution effectively prevents overheating and damage by storing or reducing excess power, ensuring the near field communication circuit and its surroundings are protected from temperature-related issues, maintaining operational integrity and preventing material deformation or damage.

Implementation Method 1

A standard near field communication circuit, for example an RFID (Radio-Frequency Identification) circuit, can be supplied with power by means of electromagnetic waves and/or fields, for example by magnetic induction.

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS9960818B2Near field communication circuit

Publication Date: 2018.05.01 INFINEON TECHNOLOGIES AG

AI summary

A near field communication circuit includes an antenna, a circuit logic unit coupled to the antenna, an energy storage coupled to the antenna, and a shunt control circuit, coupled to the antenna, for controlling a first operating voltage provided for the circuit logic unit by the antenna. The circuit logic unit is set up such that in a first mode of operation the circuit logic unit is operated by the first operating voltage provided by the antenna. The circuit logic unit is set up to control the shunt control circuit such that in the first mode of operation at least some of the electric power provided by the antenna is supplied to the energy storage for the purpose of charging same with the electric power.