Electric Vehicle Charging Control for Battery Protection
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Solution Overview
Problem
Conventional vehicle management methods for electric vehicles fail to prevent adverse effects such as overdischarge and battery freezing when the contract period expires, as they completely prohibit charging once the electronic key becomes invalid, leading to unauthorized use and potential damage.
Innovation Solution
A vehicle management method that acquires vehicle-specific ID information to determine if it is invalid, imposing limitations on charging, such as prohibiting rapid charging and setting a limit threshold for normal charging, to prevent overdischarge and freezing while allowing controlled access to the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If charging is completely prohibited once the electronic key becomes invalid, then unauthorized use is prevented, but adverse effects such as overdischarge and battery freezing occur
Solution Approach 1:
The patent applies different charging control strategies based on the specific situation. When the electronic key is invalid, the system doesn't completely prohibit charging but rather applies localized control by allowing charging only under specific conditions (e.g., when the battery charge level is below a predetermined threshold). This selective approach prevents unauthorized use while avoiding adverse effects like overdischarge and battery freezing.
2Reliability
If the electronic key is invalidated after contract period, then lending permission is revoked, but access to the vehicle becomes impossible including charging
Solution Approach 1:
The patent implements dynamic charging control based on the validity status of the electronic key. When the key is invalid, the system dynamically adjusts charging permissions rather than completely blocking access. The charging control unit allows charging operations under specific conditions (e.g., when battery level is below a threshold), creating a flexible system that enforces contract periods while maintaining necessary vehicle access for safety reasons.
3Object-affected harmful factors
If charging is limited when ID information is invalid, then adverse effects are prevented, but unlimited charging is also restricted
Solution Approach 1:
The patent changes the charging parameters based on the validity of the electronic key. When the key is invalid, the system modifies charging parameters by setting a predetermined threshold for battery charge level and only allowing charging when the level is below this threshold. This parameter change prevents adverse effects on the battery while still permitting necessary charging operations to maintain basic vehicle functionality.
Data Source
AI summary
A vehicle management method is provided for managing an electric vehicle by using a management server based on vehicle-specific ID information that defines a condition of use transmitted from an onboard controller. The vehicle management method includes acquiring vehicle ID information from the electric vehicle by using the management server; determining the vehicle ID information to be valid if the vehicle ID information acquired falls within a use period set in advance and determining the vehicle ID information to be invalid if the vehicle ID information acquired falls outside a use period set in advance; and applying a prescribed limitation to charging of a battery of the electric vehicle having the vehicle ID information upon determining that the vehicle ID information is invalid.