Multi-Pack Battery Switching Control for Fast Charging Without Lifespan Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-capacity, high-output battery packs for electric vehicles face challenges in efficient charging, as fast charging can degrade the battery and require increased burden, while existing solutions do not effectively manage charging and discharging operations independently across multiple battery packs.
Innovation Solution
A battery system comprising multiple rechargeable battery packs with switching elements and a controller that manages their states of charge and usage, allowing for independent charging and discharging operations, including wireless power transmission between packs, and integration with renewable energy sources to optimize charging and reduce the need for fast charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If fast charging is applied to high-capacity, high-output battery packs, then charging time is reduced, but battery lifespan and health deteriorate
Solution Approach 1:
The battery pack is divided into multiple independent battery modules (first battery module, second battery module, etc.), each capable of independent charging and discharging. This segmentation allows different charging strategies to be applied to different modules simultaneously - some modules can undergo fast charging while others use standard charging, thereby reducing overall charging time without compromising the entire battery pack's lifespan.
Solution Approach 2:
The system dynamically switches between different charging modes (fast charging and standard charging) based on real-time conditions such as battery state of charge, temperature, and usage patterns. The controller adjusts charging parameters dynamically, enabling the battery system to optimize between charging speed and battery health preservation according to current operational requirements.
2Reliability
If multiple battery packs are used to reduce charging burden, then battery health is preserved, but system complexity increases
Solution Approach 1:
Multiple battery modules are merged into a unified battery pack system with a single controller that manages all modules. The controller integrates the charging and discharging operations of multiple modules, allowing them to work together as a coordinated system. This merging approach preserves battery health through distributed charging while avoiding the complexity of completely separate battery pack systems.
Solution Approach 2:
Each battery module is designed with universal functionality, capable of both charging and discharging operations independently. The switching elements and controller provide multi-functional control, enabling each module to serve multiple purposes (energy storage, fast charging, standard charging) based on system requirements, thereby reducing overall system complexity through functional integration.
3Productivity
If independent charging and discharging control is implemented for each battery module, then charging efficiency is improved, but control complexity increases
Solution Approach 1:
Each battery module is equipped with switching elements that enable autonomous control of charging and discharging operations. The modules can independently switch between charging mode, discharging mode, and idle state based on controller signals. This self-service capability allows efficient independent management of each module while the centralized controller coordinates overall system operation, balancing independence with unified control.
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
The system enables efficient charging of high-capacity battery packs by managing the states of charge and usage across multiple packs, reducing wear and tear, and utilizing renewable energy sources to maintain optimal battery health and extend lifespan.
Implementation Method 1
the second battery pack wirelessly transmits power to the first battery pack through the wireless power transmission/reception module
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Embodiments of the present disclosure provide a battery system and a controlling method of the same. The battery system includes a plurality of rechargeable battery packs, and includes a first battery pack that is rechargeable, a second battery pack that is rechargeable independently of the first battery pack, a first switching element that switches the first battery pack between at least a charging node and a discharging node, a second switching element that switches the second battery pack between at least the charging node and the discharging node, and a controller that controls switching states of the first switching element and the second switching element based on usage states and states of charge of the first battery pack and the second battery pack, and thus it is possible to effectively charge a high capacity and high output battery pack.