Non-Contact Contact Charging Terminal Potential Equalization

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Solution Overview

Problem

Existing battery charging methods using terminal supplying methods often result in instantaneous discharge phenomena, leading to potential fires and reduced battery lifespan due to differing potential differences between charging devices and battery packs, as well as natural discharge through moisture.

Innovation Solution

A non-contact-contact power charge device with a charge contact terminal featuring a charge output voltage pin, ground pin, and non-contact charge connection pin, along with a voltage controller that applies either non-contact or contact voltage based on the connected device, utilizing a variable resistor and regulator to manage voltage and receive charge status information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If terminal supplying method is used for charging, then electric energy can be supplied to battery pack, but instantaneous discharge phenomenon occurs due to different potential differences between charging device and battery pack terminals

Engineering Contradiction:

Improveelectric energy supplyVSAvoidcharging safety

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent introduces a potential difference equalization circuit as an intermediary component between the charging device and battery pack terminals. This circuit includes a potential difference equalization switch and associated circuitry that activates when foreign objects are detected between terminals, equalizing the potential difference before main charging current flows, thereby preventing instantaneous discharge and fire hazards while enabling safe energy transfer

Inventive Principle:

Principle #24Intermediary (Mediator)

2Use of energy by moving object

If terminal supplying method is used for charging, then battery pack can be charged, but foreign objects stacked on terminals cause instantaneous discharge phenomenon that may lead to fire

Engineering Contradiction:

Improvebattery chargingVSAvoidfire hazard

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent implements preliminary anti-action by detecting the presence of foreign objects between terminals before charging begins and activating the potential difference equalization circuit in advance. This pre-action equalizes potential differences and prevents the harmful instantaneous discharge phenomenon that would otherwise lead to fire, eliminating the hazard before it can manifest

Inventive Principle:

Principle #9Preliminary anti-action

3Power

If terminal supplying method is used for charging, then power can be transferred, but electric energy naturally discharges to outside via terminal due to moisture causing reduction of battery lifespan

Engineering Contradiction:

Improvepower transferVSAvoidbattery lifespan

Core Design Contradiction:

PowerVSDuration of action of stationary object

Solution Approach 1:

The patent extracts and isolates the terminal interface from the main charging circuit by implementing a contactless charging mode option. Through the contactless charging switch and associated circuitry, power transfer can occur without physical terminal contact, thereby eliminating the pathway through which moisture would cause natural discharge and extending battery lifespan while maintaining power transfer capability

Inventive Principle:

Principle #2Taking out (Extraction)

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 prevents instantaneous discharge and moisture-induced natural discharge, ensuring safe and efficient charging regardless of contact or non-contact methods, thereby extending battery lifespan and preventing fires.

Implementation Method 1

a voltage controller configured to apply a non-contact voltage to the charge output voltage pin if the charge contact terminal is connected while the non-contact power transmitter is contacted to the non-contact charge connection pin

Methodology Applied

Scientific EffectContact detection:

Implementation Method 2

a variable resistor configured to apply any one of the contact voltage and the non-contact voltage to the charge output voltage pin based on the contact of the non-contact charge connection pin

Methodology Applied

Scientific EffectVoltage regulation: Electrical Resistance

Data Source

PatentUS9024577B2Non-contact and contact power charging device and controlling method thereof

Publication Date: 2015.05.05 BLUE RIDGE INNOVATIONS LLC

AI summary

A non-contact-contact power charge device, and a controlling method thereof, includes: a charge contact terminal including a charge output voltage pin, a ground pin, and a non-contact charge connection pin, the charge contact terminal being able to connect to a contact power receiver and a non-contact power transmitter; and a voltage controller configured to apply a non-contact voltage to the charge output voltage pin if the charge contact terminal is connected while the non-contact power transmitter is contacted to the non-contact charge connection pin.