Exchangeable EV Battery Pack Startup Without an Auxiliary Battery

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Solution Overview

Problem

Conventional electric scooters require an auxiliary battery for communication authentication and power supply to the ECU, which can self-discharge over time, preventing the scooter from starting if unused for extended periods.

Innovation Solution

A wireless communication type interchangeable battery pack with an NFC module that performs direct communication authentication with a smart device, eliminating the need for an auxiliary battery by using the interchangeable battery pack to supply power to the ECU, thereby enabling scooter startup even when unused for long periods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an auxiliary battery is installed to supply power to the ECU for communication authentication, then the scooter can be started and operated, but the system weight increases and manufacturing cost increases

Engineering Contradiction:

Improvescooter startabilityVSAvoidsystem weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The patent removes the auxiliary battery from the scooter system entirely. Instead, the interchangeable battery pack itself performs the auxiliary battery's function by providing power to the ECU through wireless communication during authentication, eliminating the need for a separate auxiliary battery component

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The interchangeable battery pack is designed to serve multiple functions: it provides main power for motor operation, serves as the communication authentication power source for the ECU, and enables wireless power transfer. This multi-functionality replaces what previously required both the main battery and auxiliary battery

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If an auxiliary battery is installed to supply power to the ECU, then communication authentication can be performed, but the device complexity increases

Engineering Contradiction:

Improvecommunication authentication capabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The auxiliary battery component is extracted and removed from the system. The patent simplifies the architecture by having the interchangeable battery pack directly provide power for communication authentication through wireless power transfer, eliminating the need for separate auxiliary battery wiring and control circuits

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Wireless power transfer technology acts as an intermediary mechanism, enabling the interchangeable battery pack to supply power to the ECU without physical connection. This mediator simplifies the system by eliminating complex wiring while maintaining authentication capability

Inventive Principle:

Principle #24Intermediary (Mediator)

3Weight of moving object

If the auxiliary battery is removed and wireless communication is used, then weight is reduced and cost is lowered, but power supply reliability for ECU may be compromised

Engineering Contradiction:

Improvesystem weightVSAvoidpower supply reliability

Core Design Contradiction:

Weight of moving objectVSReliability

Solution Approach 1:

The patent replaces the mechanical/electrical connection system (auxiliary battery with physical wiring) with a wireless power transfer system. This substitution maintains power supply reliability while reducing weight and complexity by using electromagnetic field-based power transmission instead of physical battery connections

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Ease of manufacture

If the interchangeable battery pack directly powers the ECU through wireless communication, then manufacturing cost is reduced and weight is reduced, but the communication authentication process becomes more complex

Engineering Contradiction:

Improvemanufacturing costVSAvoidcommunication process complexity

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent merges the communication authentication function and power supply function into a single integrated process. The interchangeable battery pack simultaneously performs wireless communication authentication and wireless power transfer to the ECU, simplifying the overall system despite the complexity of the wireless communication protocol

Inventive Principle:

Principle #5Merging (Combining)

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 allows electric scooters to start without an auxiliary battery, reducing weight, increasing fuel efficiency, and lowering manufacturing costs by using the interchangeable battery pack to power the ECU through wireless communication technology.

Implementation Method 1

providing a Near Field Communication (NFC) module in the interchangeable battery pack

Methodology Applied

Scientific EffectNear Field Communication (NFC): Electromagnetic Induction

Data Source

PatentUS20240340644A1Method for starting electric vehicle by using exchangeable battery pack employing wireless communication scheme

Publication Date: 2024.10.10 LG ENERGY SOLUTION LTD

AI summary

The present invention relates to a method of turning on an electric scooter by supplying power to the ECU when the interchangeable battery pack is driven by eliminating the auxiliary battery that always supplies power to the ECU that turns on the start of the electric scooter, providing an interchangeable battery packs using wireless communication type, and using a wireless communication signal received from a smart device as a driving signal of the interchangeable battery pack.