Vehicle Charging Authentication via Position-Based Certificate Selection

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Solution Overview

Problem

Existing vehicle authentication methods at charging stations require manual selection of contract certificates, which is inefficient and lacks automation.

Innovation Solution

A method that determines a contract certificate automatically based on the vehicle's position, user profile, and charging profile, using ISO 15118 standard, and provides it to the charging station for automated authentication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual selection of contract certificate is used, then user can choose appropriate certificate, but authentication process is time-consuming and inefficient

Engineering Contradiction:

Improvemanual selection capabilityVSAvoidauthentication time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The system enables self-service authentication by automatically selecting the appropriate contract certificate based on the charging station's identification and the vehicle's stored certificates, eliminating the need for manual user intervention in the certificate selection process

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The vehicle pre-stores multiple contract certificates in advance, and the system determines the appropriate certificate before the authentication process begins, based on the charging station's identity and the vehicle's profile, thus preparing the authentication credentials in advance

Inventive Principle:

Principle #10Preliminary action

2Productivity

If automated determination of contract certificate is implemented, then authentication efficiency is improved, but system complexity increases

Engineering Contradiction:

Improveauthentication efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system uses feedback from the charging station's identification and the vehicle's stored certificates to automatically determine the appropriate contract certificate, creating a closed-loop authentication process that adapts to the specific charging context

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically selects the appropriate contract certificate based on real-time conditions such as the charging station's identity and the vehicle's current state, making the authentication process adaptive rather than static

Inventive Principle:

Principle #15Dynamics

3Adaptability or versatility

If multiple contract certificates are stored in vehicle, then authentication flexibility is improved, but difficulty in selecting correct certificate increases

Engineering Contradiction:

Improveauthentication flexibilityVSAvoidcertificate selection difficulty

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system introduces an intermediary selection mechanism that automatically matches the charging station's identification with the appropriate contract certificate from the vehicle's stored certificates, eliminating the need for the user to manually navigate and select from multiple certificates

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260027938A1Method and Apparatus for Authenticating a Vehicle at a Charging Station

Publication Date: 2026.01.29 BAYERISCHE MOTOREN WERKE AG

AI summary

A method for authenticating a vehicle at a charging station includes determining a position of the vehicle. The method also includes determining a contract certificate from a plurality of contract certificates of the vehicle depending on the position of the vehicle. The method further includes providing the contract certificate by the vehicle to the charging station, and authenticating the vehicle at the charging station with the provided contract certificate.