Dynamic EV Charging Current Control via GPS Approach
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Solution Overview
Problem
The limited driving distance of electric vehicles due to battery constraints, which current technologies have not effectively addressed without improving battery performance.
Innovation Solution
A battery charging control apparatus and method that adjusts the current supplied to the battery based on the approaching distance and speed of the user to the electric vehicle, using GPS information to optimize charging and air conditioning operations, allowing for dynamic distribution of current between the battery and air conditioning systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery charging current is increased to reduce charging time, then the charging speed is improved, but the battery temperature increases and battery life decreases
Solution Approach 1:
The patent applies dynamics by making the charging current adjustable rather than fixed. The control device dynamically changes the charging current based on real-time battery temperature measurements and user behavior patterns (approaching distance and speed). When the battery temperature is high or the user is approaching quickly, the system reduces charging current to prevent overheating and extend battery life, thereby resolving the contradiction between charging speed and battery reliability.
Solution Approach 2:
The patent changes the parameter of charging current based on multiple factors including battery temperature, user approaching distance, and approaching speed. By adjusting this critical parameter dynamically, the system optimizes the balance between charging efficiency and battery protection, solving the technical contradiction between fast charging and battery life extension.
2Ease of operation
If the air conditioning is activated to precondition the vehicle interior, then the user comfort is improved, but the energy consumption increases and charging time extends
Solution Approach 1:
The patent applies preliminary action by activating the air conditioning system before the user actually enters the vehicle. The control device detects when the user is approaching (based on GPS distance and speed data) and pre-cools or pre-heats the vehicle interior during the charging process. This allows the user to enter a already conditioned vehicle, improving convenience without requiring separate pre-conditioning time.
Solution Approach 2:
The system dynamically adjusts the air conditioning operation based on real-time conditions. When the user is detected approaching quickly, the air conditioning runs at higher power to rapidly precondition the interior. When the user is approaching slowly or the battery temperature is already high, the system reduces or stops air conditioning operation to minimize energy consumption and charging time, thus resolving the contradiction between user convenience and charging efficiency.
3Duration of action of moving object
If the battery capacity is increased to extend driving distance, then the driving range is improved, but the vehicle weight increases and charging time extends
Solution Approach 1:
The patent applies partial action by optimizing the battery capacity to meet typical driving needs rather than providing excessive capacity for maximum range. Combined with intelligent charging current adjustment based on user behavior patterns, the system ensures that the battery is charged to an optimal level that provides sufficient driving distance without unnecessary overcharging, thereby reducing charging time while maintaining adequate driving range.
Solution Approach 2:
The system changes the charging parameters (current and voltage) dynamically based on battery state and user needs. By adjusting these parameters, the system optimizes the charging process for batteries of various capacities, reducing charging time while ensuring the battery reaches a sufficient charge level for the required driving distance, thus resolving the contradiction between driving range and charging time.
Data Source
AI summary
A battery charging control apparatus of an electric vehicle includes an air conditioning control device that controls an operation of an air conditioning device, a control device that receives global positioning system (GPS) information of a user terminal, which approaches a vehicle, and to generate charging control information based on a distance that is determined based on the GPS information of the user terminal and location information of the vehicle, and a battery charging device that controls an amount of current to be supplied to a battery and the air conditioning control device, based on the charging control information.