Battery Core Segmentation for Electrical Balancing
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Solution Overview
Problem
Secondary batteries face challenges in electrical balancing between battery cores, leading to potential overcharging or overdischarging, which can cause early failure, especially in lithium secondary batteries used in various devices.
Innovation Solution
A battery core structure comprising a first electrode plate, a second electrode plate, and separators, where the electrode plates have distinct active material portions and substrates, allowing for automatic electricity balancing by dividing the core into a main capacity part and a balancing capacity part, with the balancing part capable of absorbing excess charge or discharging to stabilize the main part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If battery cores are connected in series to satisfy voltage and power requirements, then the voltage and power output is improved, but electrical imbalance between battery cores occurs leading to overcharging or overdischarging
Solution Approach 1:
The battery core is divided into a main capacity part and a balancing capacity part through separate substrate regions (first area and second area). This segmentation allows the battery core to simultaneously provide high power output while automatically balancing electrical charge between the two parts, preventing overcharging or overdischarging issues that occur in traditional series-connected battery systems.
2Reliability
If electrical balancing control is implemented to avoid overcharging or overdischarging, then battery reliability is improved, but device complexity increases
Solution Approach 1:
The battery core structure enables automatic electrical balancing through its inherent design with main and balancing capacity parts. The balancing occurs naturally through ion diffusion between the two parts without requiring external control systems, sensors, or additional components. This self-service mechanism maintains battery reliability while avoiding the complexity of traditional electrical balancing control systems.
3Reliability
If the substrate is divided into separate areas for different active materials, then electrical balancing is achieved, but manufacturing complexity increases
Solution Approach 1:
The substrate is segmented into a first area and a second area, where each area is configured with specific active materials to create the main capacity part and balancing capacity part. This segmentation approach achieves electrical balancing functionality while using standard battery manufacturing processes, avoiding excessive complexity in the fabrication workflow.
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
This configuration effectively balances electricity within the battery core, preventing damage from charged ions, enhancing the battery's stability, longevity, and reducing costs while maintaining high power output and energy density.
Implementation Method 1
a first separator and a second separator, wherein the first separator is disposed between the first electrode plate and the second electrode plate
Data Source
AI summary
A battery core and a method of manufacturing the same are disclosed herein. The battery core includes a first electrode plate and a second electrode plate. The first electrode plate includes a substrate and a first active material. A first portion of the first active material is formed on a first area of the substrate, and a second portion of the first active material is formed on a second area of the substrate. The second electrode plate includes first and second substrates disconnected from each other, and a second active material. The first and second substrates are positioned corresponding to the first and second first areas respectively. A first portion of the second active material is formed on the first substrate, and a second portion of the second active material is formed on the second substrate.