Dual Battery Conditioning Control for Extended EV Range
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Solution Overview
Problem
Existing electric vehicles face limitations with the fixedly mounted high-voltage battery, which may not be sufficient for extended driving distances, necessitating improved battery conditioning and management to enhance State of Health (SoH) and efficiency.
Innovation Solution
A dual battery system is introduced, where a second high-voltage battery can be detachably connected to the power system, with a controller determining the need for conditioning based on State of Charge (SoC) and other factors, and performing conditioning through control signals to dedicated devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed high-voltage battery is mounted in an electric vehicle, then the power system is simple and reliable, but the driving distance is limited and cannot be extended
Solution Approach 1:
The battery system is divided into a first high-voltage battery that is fixedly mounted in the vehicle and a second high-voltage battery that is detachably connected. This segmentation allows the system to maintain simplicity with the fixed first battery while adding extendability through the detachable second battery, directly resolving the contradiction between driving distance and system complexity
Solution Approach 2:
The battery system transitions from a static fixed configuration to a dynamic configurable system where the second battery can be detached or connected as needed. This dynamic capability enables the system to adapt to different driving distance requirements without permanently increasing complexity
2Adaptability or versatility
If a dual battery system is implemented to extend driving distance, then adaptability and driving distance are improved, but battery conditioning management becomes more complex
Solution Approach 1:
The system automatically determines which battery requires conditioning by comparing their respective State of Charge (SoC) levels. The controller autonomously identifies the battery with lower SoC and directs conditioning resources to it, eliminating the need for manual intervention and simplifying operation despite the dual-battery configuration
Solution Approach 2:
The controller continuously monitors the SoC of both batteries and uses this feedback to make real-time decisions about conditioning requirements. This automated feedback mechanism simplifies management by replacing complex manual monitoring with intelligent autonomous control
3Reliability
If battery conditioning is performed based on comprehensive monitoring of SoC and charging due information, then State of Health (SoH) is enhanced, but the control system complexity increases
Solution Approach 1:
The system uses SoC (State of Charge) as a key parameter to determine conditioning needs, replacing complex multi-parameter analysis with a focused approach on charge level comparison. This parameter-based decision-making enhances SoH management while keeping the control logic relatively simple
Data Source
AI summary
A mobility apparatus includes a plurality of first wheels, at least one first driving motor for providing a driving force to the plurality of first wheels, a power system including a first battery for supplying power to the at least one first driving motor, and a controller for controlling the at least one first driving motor and the power system. A control method for conditioning a battery of the mobility apparatus includes: when a second battery is detachably and electrically connected to the power system, determining, by the controller, whether the first battery and the second battery require conditioning; determining, by the controller, conditioning time points of the first battery and/or the second battery according to whether the first battery and the second battery require the conditioning, and performing, by the controller, the conditioning of the first battery and/or the second battery.